feat(admin): add device credential isolation

AGENTS.md

@@ -10,7 +10,8 @@ cmbuyer 是一个自动化采购系统：**采购服务**（网页端，`admin/`
 
 **系统只创建待付款订单，任何情况下都不自动付款。**
 
-当前状态：仓库只有文档，尚未开始编码。阶段为 Phase 0。
+当前状态：两端骨架、基础模型、登录和真机取证脚手架已落地；Phase 1 真机取证与不依赖页面判据的
+Phase 2 服务端任务并行。实时快照见 [`docs/current-state.md`](docs/current-state.md)。
 
 ## 必读顺序
 
@@ -33,7 +34,9 @@ cmbuyer 是一个自动化采购系统：**采购服务**（网页端，`admin/`
 系统**会**点击「提交订单」创建待付款订单，但必须满足四个前置条件（授权未消费且服务端
 提交围栏已建立、闸门二通过、闸门三通过、控件唯一），且**只点一次**、点击后无论结果
 都不重试。围栏申请失败或响应不明时不得点击；围栏建立后只能调和同一提交记录。
-**第一趟试选的代码路径不得引用任何下单函数**，必须有测试证明不可达。
+管理员点击“开始采购（只创建待付款订单）”是唯一的人类授权动作。T-103 的规格选择/读价隔离
+验证路径不得引用数量、确认页、提交或付款函数；后续能力必须按真机取证任务逐段开放，并有静态
+调用链测试证明未获准能力不可达。
 
 ### 2. 安全边界只能收紧
 
@@ -141,8 +144,8 @@ python scripts/validate_agent_context.py
 
 **跨端契约改动必跑完整门禁**——两端会同时坏。
 
-代码尚未初始化，上述命令在 T-001 / T-002 完成前不可运行；届时由对应任务替换为真实命令
-并同步文档。
+两端已初始化；跨端契约改动还需在仓库根运行 `./init.ps1`（或 `./init.sh`）完成安装、测试、
+vet/build、compileall 和上下文门禁。
 
 ## 风格
 

README.md

@@ -8,13 +8,14 @@
 ## 它做什么
 
 一笔外部订单进来，采购人员需要去拼多多找到同款、选对颜色尺码、下单、把订单号抄回系统。
-cmbuyer 把这个过程自动化，人只在两个点介入：**机器选对了吗**和**付不付款**。
+cmbuyer 把这个过程自动化：管理员明确“买什么、买多少、最多多少钱”并点击开始采购，系统只
+创建待付款订单，**是否付款始终由人决定**。
 
 ```text
 手工填链接（MVP）  ／  Excel · ERP（V2）
             │
             v
- 采购服务（admin/，Go）  建单 · 试选确认 · 下单授权 · 审计
+ 采购服务（admin/，Go）  建单 · 开始采购授权 · 围栏 · 审计
             │  HTTP
             v
 采购工具（client/，Python）  领任务 · 跑流程 · 回传
@@ -23,31 +24,22 @@ cmbuyer 把这个过程自动化，人只在两个点介入：**机器选对了
    Android 手机（拼多多 App）
 ```
 
-## 两趟执行
+## 单趟执行
 
-MVP 只做**任务自带商品链接**的情形，分两趟跑完：
+MVP 只做**任务自带商品链接**的情形：管理员先把任务保存为 `DRAFT`，再在表格中勾选并点击
+“开始采购（只创建待付款订单）”。该点击创建一次性授权，锁定商品、颜色、尺码、数量和最高总价。
 
-| 趟次 | 做什么 |
-| --- | --- |
-| **第一趟 · 试选** | 开商品 → 精确勾选颜色分类和尺码 → 读单价 → 截图 → **退出释放手机** → 回传 |
-| **人工确认** | 人在网页端看「机器选对了吗」→ 确认并**锁定单价** |
-| **第二趟 · 下单** | 重新开商品 → 重新选同一规格 → **三道价格闸门** → 提交订单一次 → 转「待付款」 |
-
-为什么分两趟：一台手机是瓶颈，不能停在规格面板上等人。代价是走两遍，换来手机不空闲，
-且第二趟能抓住价格变动。
-
-**三道价格闸门**：① 第一趟规格面板读价 ② 第二趟重读必须与授权价一致
-③ 订单确认页「实付款」不超上限。任一道读不到或不通过即停，转人工。
+采购工具领取后在同一次设备会话中完成：打开商品 → 精确选择规格 → 闸门一读 SKU 单价并校验
+上限 → 设置并复核数量 → 闸门二重读规格与同价 → 进入确认页 → 闸门三校验应付总额 → 服务端
+原子建立提交围栏 → 精确点击一次“提交订单” → 转待付款。中间不再回网页端等“机器选对了吗”。
 
 价格**只在规格面板和订单确认页读**——别处的价格文本被拆成多个节点、带券后前缀、
 实付价与原价混在一起，不可靠。
 
 ## 现在处于什么阶段
 
-**Phase 0 · 地基。仓库目前只有文档，尚未开始编码。**
-
-下一步：T-005（网页端 MVP 原型）与 T-006（桌面端 MVP 原型）的文件和自动检查已完成，
-请先人工确认 6 个 HTML 原型，再进入 T-001 / T-002 骨架和生产实现。
+**Phase 1 真机取证与 Phase 2 的安全服务端工作并行。** 两端骨架、基础模型、登录和真机基线已
+落地；T-111 正在冻结单趟采购契约，T-103 随后继续规格精确选择与读价，T-202 等待主审合入。
 详见 [`docs/current-state.md`](docs/current-state.md)。
 
 **生死线是 M2**：真机能按链接打开商品、精确勾选颜色分类和尺码、**读到该 SKU 单价**。
@@ -74,7 +66,7 @@ MVP 只做**任务自带商品链接**的情形，分两趟跑完：
 4. 规格按维度精确匹配，防前缀碰撞，找不到即停
 5. 数量设置后必须读回复核
 6. **三道价格闸门**，任一道读不到或不通过即停
-7. **第一趟绝不下单**——试选路径不得引用下单函数
+7. **能力分层**——T-103 规格验证路径不得引用数量、确认页或下单函数；后续能力逐段取证
 8. 检测到外部支付交接立即停止，不读取不保存凭据
 9. 检测到验证码 / 风控 / 人脸 / 短信校验立即停止，不绕过
 10. 只读非敏感摘要，不提取收货地址原文、手机号、支付凭据

admin/README.md

@@ -0,0 +1,64 @@
+# 采购服务
+
+启动前必须显式设置下列环境变量；服务不提供默认管理员账号、密码或会话密钥。
+
+| 变量 | 要求 |
+| --- | --- |
+| `CMBUYER_ADMIN_USERNAME` | 非空管理员账号。 |
+| `CMBUYER_ADMIN_PASSWORD_BCRYPT` | 非空 bcrypt 密码哈希，不接受明文密码。 |
+| `CMBUYER_SESSION_SECRET` | 至少 32 字节的会话签名密钥。 |
+| `CMBUYER_COOKIE_SECURE` | 可选；存在时只能精确为 `true` 或 `false`。HTTPS 部署应设为 `true`。 |
+| `CMBUYER_DATABASE_SOURCE` | 已迁移 SQLite 的显式 data source。 |
+| `CMBUYER_AUTHORIZATION_TTL` | 一次性授权的正 Go duration，例如 `10m`。 |
+| `CMBUYER_MAX_TASK_QUANTITY` | 每条任务允许的正整数数量上限。 |
+| `CMBUYER_MAX_TOTAL_PRICE` | 每条任务允许的规范正数总价上限，例如 `999.99`。 |
+| `CMBUYER_EVIDENCE_DIR` | 内部原始截图的绝对私有目录；不得指向仓库或公开静态目录。 |
+
+示例仅展示变量名，不提供可运行凭据：
+
+```powershell
+$env:CMBUYER_ADMIN_USERNAME = '<管理员账号>'
+$env:CMBUYER_ADMIN_PASSWORD_BCRYPT = '<bcrypt 密码哈希>'
+$env:CMBUYER_SESSION_SECRET = '<至少 32 字节的随机密钥>'
+$env:CMBUYER_COOKIE_SECURE = 'true'
+$env:CMBUYER_DATABASE_SOURCE = '<SQLite data source>'
+$env:CMBUYER_AUTHORIZATION_TTL = '10m'
+$env:CMBUYER_MAX_TASK_QUANTITY = '99'
+$env:CMBUYER_MAX_TOTAL_PRICE = '999.99'
+$env:CMBUYER_EVIDENCE_DIR = '<内部截图绝对目录>'
+go run ./cmd/migrate -database $env:CMBUYER_DATABASE_SOURCE up
+go run ./cmd/server
+```
+
+MVP 服务固定绑定 IPv4 回环 `127.0.0.1:8080`，只供同一运营电脑上的采购服务和采购工具使用。不要把监听地址
+改成 `0.0.0.0` 或局域网地址；未来若需要非回环访问，必须先单独建立并验收 HTTPS/TLS 终止与代理
+信任边界，设备 Bearer 不得经过明文局域网。
+
+数据库迁移完成后，用同一个显式 SQLite data source 管理设备凭据：
+
+```powershell
+# 签发：token 只在本次成功输出中显示一次，请立即放入采购工具的受控本机配置。
+go run ./cmd/device-credentials -database $env:CMBUYER_DATABASE_SOURCE issue -name '<非秘密设备名称>'
+
+# 仅显示设备 id、名称、状态和时间，不显示 token/hash。
+go run ./cmd/device-credentials -database $env:CMBUYER_DATABASE_SOURCE list
+
+# 撤销立即影响之后开始的每次设备请求；重复执行保持 REVOKED，不恢复旧 token。
+go run ./cmd/device-credentials -database $env:CMBUYER_DATABASE_SOURCE revoke -device-id '<签发时的设备UUID>'
+```
+
+该 CLI 只接受已存在、已迁移的文件型 SQLite 普通路径或 `file:` URI，并强制以 `mode=rw` 打开；
+路径拼错或文件缺失时 SQLite 原子拒绝且不会留下空数据库，也不接受内存、只读或可创建模式。CLI
+不自动迁移。签发 token 是 32 字节加密随机值的 64 位小写十六进制表示；
+SQLite 只保存原始 token 的 32 字节 SHA-256 BLOB。签发输出以外的 list/revoke、日志、错误和 HTTP
+响应都不会显示 token 或 hash。
+
+采购服务会话仅保存在当前进程内；进程重启后既有登录会话会安全失效。
+管理员的“开始采购（只创建待付款订单）”只签发一次性授权并创建待付款订单的资格；服务不会自动付款，也不包含任何支付操作。
+
+`GET /tasks/{id}` 直接访问时渲染完整详情页，任务列表以同一 URL 加载详情抽屉。内部截图只通过
+`GET /evidence/{asset_id}` 向有效管理员会话提供，并始终返回 `no-store`；文件不在静态目录中。
+
+`POST /api/v1/tasks/{id}/evidence` 使用 `Authorization: Bearer <token>` 和
+`X-CMBuyer-Device-ID: <小写UUIDv4>` 逐请求查库认证；管理员会话不能代替设备身份。凭据错误统一空
+401，SQLite 认证故障为空 503，且两者都发生在上传 body 被读取之前。

admin/cmd/device-credentials/main.go

@@ -0,0 +1,200 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"cmbuyer/admin/internal/deviceauth"
+	"cmbuyer/admin/internal/storage/sqlite"
+)
+
+func main() {
+	if err := run(context.Background(), os.Args[1:], os.Stdout, os.Stderr); err != nil {
+		log.Print(err)
+		os.Exit(1)
+	}
+}
+
+func run(ctx context.Context, args []string, stdout, stderr io.Writer) error {
+	flags := flag.NewFlagSet("device-credentials", flag.ContinueOnError)
+	flags.SetOutput(stderr)
+	databaseSource := flags.String("database", "", "explicit migrated SQLite data source")
+	if err := flags.Parse(args); err != nil {
+		return err
+	}
+	if *databaseSource == "" {
+		return errors.New("-database is required")
+	}
+	if flags.NArg() < 1 {
+		return errors.New("usage: device-credentials -database <sqlite-data-source> <issue|list|revoke> [options]")
+	}
+	command := flags.Arg(0)
+	commandArgs := flags.Args()[1:]
+	var issueName, revokeDeviceID string
+	switch command {
+	case "issue":
+		commandFlags := flag.NewFlagSet("issue", flag.ContinueOnError)
+		commandFlags.SetOutput(stderr)
+		commandFlags.StringVar(&issueName, "name", "", "non-secret device display name")
+		if err := commandFlags.Parse(commandArgs); err != nil {
+			return err
+		}
+		if issueName == "" || commandFlags.NArg() != 0 {
+			return errors.New("usage: device-credentials -database <sqlite-data-source> issue -name <display-name>")
+		}
+	case "list":
+		if len(commandArgs) != 0 {
+			return errors.New("usage: device-credentials -database <sqlite-data-source> list")
+		}
+	case "revoke":
+		commandFlags := flag.NewFlagSet("revoke", flag.ContinueOnError)
+		commandFlags.SetOutput(stderr)
+		commandFlags.StringVar(&revokeDeviceID, "device-id", "", "canonical device UUID")
+		if err := commandFlags.Parse(commandArgs); err != nil {
+			return err
+		}
+		if revokeDeviceID == "" || commandFlags.NArg() != 0 {
+			return errors.New("usage: device-credentials -database <sqlite-data-source> revoke -device-id <uuid>")
+		}
+	default:
+		return fmt.Errorf("unsupported device credential command %q", command)
+	}
+	if command == "issue" && !deviceauth.ValidDisplayName(issueName) {
+		return deviceauth.ErrInvalidCredential
+	}
+	if command == "revoke" && !deviceauth.ValidDeviceID(revokeDeviceID) {
+		return deviceauth.ErrInvalidCredential
+	}
+
+	existingSource, err := existingSQLiteDataSource(*databaseSource)
+	if err != nil {
+		return err
+	}
+	database, err := sqlite.Open(existingSource)
+	if err != nil {
+		return fmt.Errorf("open SQLite database: %w", err)
+	}
+	defer database.Close()
+	store, err := deviceauth.NewCredentialStore(database)
+	if err != nil {
+		return err
+	}
+
+	switch command {
+	case "issue":
+		issued, err := store.Issue(ctx, issueName)
+		if err != nil {
+			return err
+		}
+		// The token has json:"-" and is printed only by this explicit post-commit path. Generic
+		// serialization, list, revoke, errors, and server responses therefore cannot disclose it.
+		if _, err := fmt.Fprintf(stdout, "device_id=%s\ndisplay_name=%s\ntoken=%s\ncreated_at=%s\n",
+			issued.DeviceID, issued.DisplayName, issued.Token, issued.CreatedAt.Format(time.RFC3339Nano)); err != nil {
+			return errors.New("write issued device credential")
+		}
+		return nil
+	case "list":
+		credentials, err := store.List(ctx)
+		if err != nil {
+			return err
+		}
+		return writeJSON(stdout, credentials)
+	case "revoke":
+		credential, changed, err := store.Revoke(ctx, revokeDeviceID)
+		if err != nil {
+			return err
+		}
+		return writeJSON(stdout, struct {
+			Credential deviceauth.Credential `json:"credential"`
+			RevokedNow bool                  `json:"revoked_now"`
+		}{Credential: credential, RevokedNow: changed})
+	}
+	return errors.New("unreachable device credential command")
+}
+
+func existingSQLiteDataSource(value string) (string, error) {
+	if value == "" || strings.TrimSpace(value) != value {
+		return "", errors.New("-database must name an existing file-backed SQLite database")
+	}
+
+	var parsed *url.URL
+	var query url.Values
+	if strings.HasPrefix(strings.ToLower(value), "file:") {
+		var err error
+		parsed, err = url.Parse(value)
+		if err != nil || !strings.EqualFold(parsed.Scheme, "file") || parsed.User != nil || parsed.Host != "" || parsed.Fragment != "" {
+			return "", errors.New("-database file URI is invalid")
+		}
+		// go-sqlite3 recognizes URI filenames only with the exact lowercase file: prefix.
+		// Canonicalize accepted scheme casing before mode=rw reaches the driver, otherwise a
+		// mixed-case input could be treated as a plain filename and recreate a missing database.
+		parsed.Scheme = "file"
+		query, err = url.ParseQuery(parsed.RawQuery)
+		if err != nil {
+			return "", errors.New("-database query parameters are invalid")
+		}
+		fileName := parsed.Path
+		if parsed.Opaque != "" {
+			fileName = parsed.Opaque
+		}
+		decodedName, err := url.PathUnescape(fileName)
+		if err != nil || fileName == "" || strings.EqualFold(decodedName, ":memory:") {
+			return "", errors.New("-database must name an existing file-backed SQLite database")
+		}
+	} else {
+		pathPart, rawQuery, hasQuery := strings.Cut(value, "?")
+		if pathPart == "" || strings.EqualFold(pathPart, ":memory:") || strings.Contains(pathPart, "://") {
+			return "", errors.New("-database must name an existing file-backed SQLite database")
+		}
+		var err error
+		query, err = url.ParseQuery(rawQuery)
+		if err != nil {
+			return "", errors.New("-database query parameters are invalid")
+		}
+		normalizedPath := filepath.ToSlash(pathPart)
+		if filepath.VolumeName(pathPart) != "" && !strings.HasPrefix(normalizedPath, "/") {
+			normalizedPath = "/" + normalizedPath
+		}
+		parsed = &url.URL{Scheme: "file", Path: normalizedPath}
+		if !hasQuery {
+			query = make(url.Values)
+		}
+	}
+
+	modes := query["mode"]
+	if len(modes) > 1 || len(modes) == 1 && modes[0] != "rw" {
+		return "", errors.New("-database only permits SQLite mode=rw")
+	}
+	if len(modes) == 0 {
+		query.Set("mode", "rw")
+	}
+	for _, name := range []string{"immutable", "_query_only"} {
+		for _, setting := range query[name] {
+			if setting != "0" && !strings.EqualFold(setting, "false") {
+				return "", errors.New("-database contains a read-only SQLite option")
+			}
+		}
+	}
+	parsed.RawQuery = query.Encode()
+	parsed.ForceQuery = false
+	return parsed.String(), nil
+}
+
+func writeJSON(writer io.Writer, value any) error {
+	encoder := json.NewEncoder(writer)
+	encoder.SetEscapeHTML(true)
+	if err := encoder.Encode(value); err != nil {
+		return errors.New("write device credential metadata")
+	}
+	return nil
+}

admin/cmd/device-credentials/main_test.go

@@ -0,0 +1,293 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"database/sql"
+	"errors"
+	"io"
+	"net/url"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"testing"
+
+	"cmbuyer/admin/internal/deviceauth"
+	"cmbuyer/admin/internal/migrations"
+	"cmbuyer/admin/internal/storage/sqlite"
+)
+
+func TestIssueListAndIdempotentRevokeNeverRediscloseSecret(t *testing.T) {
+	databaseSource := migratedDatabase(t)
+	var issued bytes.Buffer
+	if err := run(context.Background(), []string{"-database", databaseSource, "issue", "-name", "采购工具一号"}, &issued, io.Discard); err != nil {
+		t.Fatalf("issue: %v", err)
+	}
+	fields := outputFields(t, issued.String())
+	deviceID, token := fields["device_id"], fields["token"]
+	if len(token) != 64 || strings.Count(issued.String(), token) != 1 {
+		t.Fatalf("issue token occurrence/length = %d/%d", strings.Count(issued.String(), token), len(token))
+	}
+
+	var listed bytes.Buffer
+	if err := run(context.Background(), []string{"-database", databaseSource, "list"}, &listed, io.Discard); err != nil {
+		t.Fatalf("list: %v", err)
+	}
+	assertNoSecretMetadata(t, listed.String(), token)
+	if !strings.Contains(listed.String(), deviceID) || !strings.Contains(listed.String(), "采购工具一号") {
+		t.Fatalf("list omitted safe metadata: %s", listed.String())
+	}
+
+	var revoked bytes.Buffer
+	if err := run(context.Background(), []string{"-database", databaseSource, "revoke", "-device-id", deviceID}, &revoked, io.Discard); err != nil {
+		t.Fatalf("revoke: %v", err)
+	}
+	assertNoSecretMetadata(t, revoked.String(), token)
+	if !strings.Contains(revoked.String(), `"revoked_now":true`) {
+		t.Fatalf("first revoke output = %s", revoked.String())
+	}
+	var repeated bytes.Buffer
+	if err := run(context.Background(), []string{"-database", databaseSource, "revoke", "-device-id", deviceID}, &repeated, io.Discard); err != nil {
+		t.Fatalf("repeat revoke: %v", err)
+	}
+	assertNoSecretMetadata(t, repeated.String(), token)
+	if !strings.Contains(repeated.String(), `"revoked_now":false`) {
+		t.Fatalf("repeat revoke output = %s", repeated.String())
+	}
+}
+
+func TestIssueOutputFailureLeavesCommittedCredentialWithoutSecretInError(t *testing.T) {
+	databaseSource := migratedDatabase(t)
+	writer := &recordingFailureWriter{}
+	err := run(context.Background(), []string{"-database", databaseSource, "issue", "-name", "output failure"}, writer, io.Discard)
+	if err == nil || err.Error() != "write issued device credential" {
+		t.Fatalf("issue output failure error = %v", err)
+	}
+	fields := outputFields(t, writer.contents.String())
+	if strings.Contains(err.Error(), fields["token"]) {
+		t.Fatal("output error disclosed token")
+	}
+	database, err := sql.Open("sqlite3", databaseSource)
+	if err != nil {
+		t.Fatalf("open database: %v", err)
+	}
+	defer database.Close()
+	var count int
+	if err := database.QueryRow(`SELECT COUNT(*) FROM device_credentials`).Scan(&count); err != nil || count != 1 {
+		t.Fatalf("committed credential count = %d, err=%v", count, err)
+	}
+}
+
+func TestCLIRequiresPreMigratedExplicitDatabase(t *testing.T) {
+	if err := run(context.Background(), []string{"list"}, io.Discard, io.Discard); err == nil {
+		t.Fatal("command without -database succeeded")
+	}
+	missing := filepath.Join(t.TempDir(), "missing.db")
+	if err := run(context.Background(), []string{"-database", missing, "list"}, io.Discard, io.Discard); err == nil {
+		t.Fatal("list opened a missing database")
+	}
+	if _, err := os.Stat(missing); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("missing database was created: %v", err)
+	}
+
+	unmigrated := filepath.Join(t.TempDir(), "unmigrated.db")
+	unmigratedDatabase, err := sqlite.Open(unmigrated)
+	if err != nil {
+		t.Fatalf("create unmigrated database: %v", err)
+	}
+	if _, err := unmigratedDatabase.Exec(`CREATE TABLE unrelated (id INTEGER)`); err != nil {
+		_ = unmigratedDatabase.Close()
+		t.Fatalf("initialize unmigrated database: %v", err)
+	}
+	if err := unmigratedDatabase.Close(); err != nil {
+		t.Fatalf("close unmigrated database: %v", err)
+	}
+	if err := run(context.Background(), []string{"-database", unmigrated, "list"}, io.Discard, io.Discard); err == nil {
+		t.Fatal("list accepted an unmigrated database")
+	}
+	database, err := sql.Open("sqlite3", unmigrated)
+	if err != nil {
+		t.Fatalf("open unmigrated database: %v", err)
+	}
+	defer database.Close()
+	var count int
+	if err := database.QueryRow(`SELECT COUNT(*) FROM sqlite_master WHERE type='table' AND name='device_credentials'`).Scan(&count); err != nil || count != 0 {
+		t.Fatalf("device_credentials table count = %d, err=%v", count, err)
+	}
+
+	undeclared := filepath.Join(t.TempDir(), "undeclared.db")
+	if err := run(context.Background(), []string{"-database", undeclared, "rotate"}, io.Discard, io.Discard); err == nil {
+		t.Fatal("undeclared command succeeded")
+	}
+	if _, err := os.Stat(undeclared); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("undeclared command opened database: %v", err)
+	}
+
+	invalidIssue := filepath.Join(t.TempDir(), "invalid-issue.db")
+	if err := run(context.Background(), []string{"-database", invalidIssue, "issue", "-name", " padded"}, io.Discard, io.Discard); !errors.Is(err, deviceauth.ErrInvalidCredential) {
+		t.Fatalf("invalid issue error = %v", err)
+	}
+	if _, err := os.Stat(invalidIssue); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("invalid issue opened database: %v", err)
+	}
+
+	invalidRevoke := filepath.Join(t.TempDir(), "invalid-revoke.db")
+	if err := run(context.Background(), []string{"-database", invalidRevoke, "revoke", "-device-id", "not-a-uuid"}, io.Discard, io.Discard); !errors.Is(err, deviceauth.ErrInvalidCredential) {
+		t.Fatalf("invalid revoke error = %v", err)
+	}
+	if _, err := os.Stat(invalidRevoke); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("invalid revoke opened database: %v", err)
+	}
+
+	migrated := migratedDatabase(t)
+	unknownID := "13c9f507-7473-4fa6-8d71-8786c34c6301"
+	var unknownOutput bytes.Buffer
+	err = run(context.Background(), []string{"-database", migrated, "revoke", "-device-id", unknownID}, &unknownOutput, io.Discard)
+	if !errors.Is(err, deviceauth.ErrCredentialNotFound) || unknownOutput.Len() != 0 || strings.Contains(err.Error(), unknownID) {
+		t.Fatalf("unknown revoke = output %q, error %v", unknownOutput.String(), err)
+	}
+}
+
+func TestExistingSQLiteDataSourcePreservesSafeOptionsAndRejectsCreationModes(t *testing.T) {
+	databaseSource := migratedDatabase(t)
+	fileURI := (&url.URL{
+		Scheme:   "file",
+		Path:     sqliteURIPath(databaseSource),
+		RawQuery: "_busy_timeout=5000&cache=shared",
+	}).String()
+	normalized, err := existingSQLiteDataSource(fileURI)
+	if err != nil {
+		t.Fatalf("normalize file URI: %v", err)
+	}
+	parsed, err := url.Parse(normalized)
+	if err != nil {
+		t.Fatalf("parse normalized URI: %v", err)
+	}
+	query := parsed.Query()
+	if query.Get("mode") != "rw" || query.Get("_busy_timeout") != "5000" || query.Get("cache") != "shared" {
+		t.Fatalf("normalized query = %v", query)
+	}
+	if err := run(context.Background(), []string{"-database", fileURI, "list"}, io.Discard, io.Discard); err != nil {
+		t.Fatalf("list existing file URI: %v", err)
+	}
+
+	plainNormalized, err := existingSQLiteDataSource(databaseSource + "?_foreign_keys=on")
+	if err != nil {
+		t.Fatalf("normalize ordinary path: %v", err)
+	}
+	plainURI, err := url.Parse(plainNormalized)
+	if err != nil || plainURI.Scheme != "file" || plainURI.Query().Get("mode") != "rw" || plainURI.Query().Get("_foreign_keys") != "on" {
+		t.Fatalf("ordinary path normalization = %q, err=%v", plainNormalized, err)
+	}
+
+	missing := filepath.Join(t.TempDir(), "missing-uri.db")
+	missingURI := (&url.URL{Scheme: "file", Path: sqliteURIPath(missing)}).String()
+	if err := run(context.Background(), []string{"-database", missingURI, "list"}, io.Discard, io.Discard); err == nil {
+		t.Fatal("missing file URI succeeded")
+	}
+	if _, err := os.Stat(missing); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("missing file URI created a file: %v", err)
+	}
+	for _, scheme := range []string{"FILE", "File"} {
+		mixedMissing := filepath.Join(t.TempDir(), strings.ToLower(scheme)+"-missing.db")
+		canonical := (&url.URL{Scheme: "file", Path: sqliteURIPath(mixedMissing)}).String()
+		mixedURI := scheme + canonical[len("file"):]
+		normalized, err := existingSQLiteDataSource(mixedURI)
+		if err != nil || !strings.HasPrefix(normalized, "file:") {
+			t.Fatalf("normalize %s URI = %q, err=%v", scheme, normalized, err)
+		}
+		if err := run(context.Background(), []string{"-database", mixedURI, "list"}, io.Discard, io.Discard); err == nil {
+			t.Fatalf("missing %s URI succeeded", scheme)
+		}
+		if _, err := os.Stat(mixedMissing); !errors.Is(err, os.ErrNotExist) {
+			t.Fatalf("missing %s URI created a file: %v", scheme, err)
+		}
+	}
+
+	for name, source := range map[string]string{
+		"plain memory":     ":memory:",
+		"URI memory":       "file::memory:?cache=shared",
+		"memory mode":      fileURI + "&mode=memory",
+		"read only mode":   fileURI + "&mode=ro",
+		"create mode":      fileURI + "&mode=rwc",
+		"duplicate mode":   fileURI + "&mode=rw&mode=rw",
+		"immutable":        fileURI + "&immutable=1",
+		"query only":       fileURI + "&_query_only=1",
+		"remote authority": "file://server/share/database.db?mode=rw",
+	} {
+		t.Run(name, func(t *testing.T) {
+			if _, err := existingSQLiteDataSource(source); err == nil {
+				t.Fatalf("unsafe source accepted: %q", source)
+			}
+		})
+	}
+}
+
+func sqliteURIPath(path string) string {
+	normalized := filepath.ToSlash(path)
+	if filepath.VolumeName(path) != "" && !strings.HasPrefix(normalized, "/") {
+		return "/" + normalized
+	}
+	return normalized
+}
+
+type recordingFailureWriter struct {
+	contents bytes.Buffer
+}
+
+func (writer *recordingFailureWriter) Write(value []byte) (int, error) {
+	_, _ = writer.contents.Write(value)
+	return 0, errors.New("injected stdout failure")
+}
+
+func assertNoSecretMetadata(t *testing.T, output, token string) {
+	t.Helper()
+	if strings.Contains(output, token) || strings.Contains(output, "token") || strings.Contains(output, "hash") || strings.Contains(output, "sha256") {
+		t.Fatalf("metadata output disclosed secret material: %s", output)
+	}
+}
+
+func outputFields(t *testing.T, output string) map[string]string {
+	t.Helper()
+	fields := make(map[string]string)
+	for _, line := range strings.Split(strings.TrimSpace(output), "\n") {
+		name, value, found := strings.Cut(line, "=")
+		if !found || name == "" || value == "" {
+			t.Fatalf("invalid issue output line %q", line)
+		}
+		fields[name] = value
+	}
+	for _, required := range []string{"device_id", "display_name", "token", "created_at"} {
+		if fields[required] == "" {
+			t.Fatalf("issue output missing %s: %q", required, output)
+		}
+	}
+	return fields
+}
+
+func migratedDatabase(t *testing.T) string {
+	t.Helper()
+	databaseSource := filepath.Join(t.TempDir(), "credentials.db")
+	database, err := sqlite.Open(databaseSource)
+	if err != nil {
+		t.Fatalf("open database: %v", err)
+	}
+	if err := migrations.Up(context.Background(), database, commandMigrationDirectory(t)); err != nil {
+		_ = database.Close()
+		t.Fatalf("migrate database: %v", err)
+	}
+	if err := database.Close(); err != nil {
+		t.Fatalf("close migrated database: %v", err)
+	}
+	return databaseSource
+}
+
+func commandMigrationDirectory(t *testing.T) string {
+	t.Helper()
+	_, file, _, ok := runtime.Caller(0)
+	if !ok {
+		t.Fatal("locate migrations")
+	}
+	return filepath.Join(filepath.Dir(file), "..", "..", "migrations")
+}

admin/cmd/migrate/main.go

@@ -0,0 +1,58 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"os"
+
+	"cmbuyer/admin/internal/migrations"
+	"cmbuyer/admin/internal/storage/sqlite"
+)
+
+func main() {
+	if err := run(context.Background(), os.Args[1:], os.Stderr); err != nil {
+		log.Print(err)
+		os.Exit(1)
+	}
+}
+
+func run(ctx context.Context, args []string, stderr io.Writer) error {
+	flags := flag.NewFlagSet("migrate", flag.ContinueOnError)
+	flags.SetOutput(stderr)
+	databaseSource := flags.String("database", "", "SQLite data source")
+	migrationDirectory := flags.String("dir", "migrations", "migration directory")
+
+	if err := flags.Parse(args); err != nil {
+		return err
+	}
+	if *databaseSource == "" {
+		return errors.New("-database is required")
+	}
+	if flags.NArg() != 1 {
+		return fmt.Errorf("usage: migrate -database <sqlite-data-source> [-dir <migration-directory>] <up|down|status>")
+	}
+	command := flags.Arg(0)
+	if command != "up" && command != "down" && command != "status" {
+		return fmt.Errorf("unsupported migration command %q", command)
+	}
+
+	database, err := sqlite.Open(*databaseSource)
+	if err != nil {
+		return fmt.Errorf("open SQLite database: %w", err)
+	}
+	defer func() {
+		if err := database.Close(); err != nil {
+			log.Printf("close SQLite database: %v", err)
+		}
+	}()
+
+	if err := migrations.Run(ctx, database, *migrationDirectory, command); err != nil {
+		return fmt.Errorf("run migrations: %w", err)
+	}
+
+	return nil
+}

admin/cmd/migrate/main_test.go

@@ -0,0 +1,68 @@
+package main
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"io"
+	"os"
+	"path/filepath"
+	"runtime"
+	"testing"
+)
+
+func TestRunUp(t *testing.T) {
+	databaseSource := filepath.Join(t.TempDir(), "migrate.db")
+	if err := run(context.Background(), []string{
+		"-database", databaseSource,
+		"-dir", migrationDirectory(t),
+		"up",
+	}, io.Discard); err != nil {
+		t.Fatalf("run up migration command: %v", err)
+	}
+
+	database, err := sql.Open("sqlite3", databaseSource)
+	if err != nil {
+		t.Fatalf("open migrated database: %v", err)
+	}
+	t.Cleanup(func() {
+		if err := database.Close(); err != nil {
+			t.Errorf("close migrated database: %v", err)
+		}
+	})
+
+	var count int
+	if err := database.QueryRow(`SELECT COUNT(*) FROM sqlite_master WHERE type = 'table' AND name = 'tasks'`).Scan(&count); err != nil {
+		t.Fatalf("look up tasks table: %v", err)
+	}
+	if count != 1 {
+		t.Fatalf("tasks table count = %d, want 1", count)
+	}
+}
+
+func TestRunRequiresDatabase(t *testing.T) {
+	if err := run(context.Background(), []string{"up"}, io.Discard); err == nil {
+		t.Fatal("run without database source succeeded")
+	}
+}
+
+func TestRunRejectsUndeclaredCommand(t *testing.T) {
+	databaseSource := filepath.Join(t.TempDir(), "migrate.db")
+	err := run(context.Background(), []string{"-database", databaseSource, "reset"}, io.Discard)
+	if err == nil {
+		t.Fatal("run with undeclared command succeeded")
+	}
+	if _, err := os.Stat(databaseSource); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("undeclared command opened database source: stat error = %v, want not exist", err)
+	}
+}
+
+func migrationDirectory(t *testing.T) string {
+	t.Helper()
+	_, file, _, ok := runtime.Caller(0)
+	if !ok {
+		t.Fatal("locate migration command test source")
+	}
+
+	return filepath.Join(filepath.Dir(file), "..", "..", "migrations")
+}

admin/cmd/server/main.go

@@ -5,10 +5,19 @@ import (
 	"log"
 	"net/http"
 
+	"cmbuyer/admin/internal/auth"
+	"cmbuyer/admin/internal/config"
+	"cmbuyer/admin/internal/deviceauth"
 	"cmbuyer/admin/internal/server"
+	evidencestorage "cmbuyer/admin/internal/storage/evidence"
+	"cmbuyer/admin/internal/storage/sqlite"
+	"cmbuyer/admin/internal/taskdetail"
+	"cmbuyer/admin/internal/tasks"
 )
 
-const listenAddress = ":8080"
+// Device Bearer credentials must not cross a plaintext LAN. The MVP is a same-computer
+// deployment, so widening this address requires a separately reviewed TLS boundary first.
+const listenAddress = "127.0.0.1:8080"
 
 func main() {
 	if err := run(); err != nil {
@@ -17,7 +26,47 @@ func main() {
 }
 
 func run() error {
-	err := http.ListenAndServe(listenAddress, server.NewRouter())
+	configuration, err := config.LoadFromEnv()
+	if err != nil {
+		return err
+	}
+	database, err := sqlite.Open(configuration.DatabaseSource)
+	if err != nil {
+		return err
+	}
+	defer database.Close()
+	taskStore, err := tasks.NewSQLiteStore(database)
+	if err != nil {
+		return err
+	}
+	taskStore.SetStartPolicy(tasks.StartPolicy{AuthorizationTTL: configuration.AuthorizationTTL, MaxQuantity: configuration.MaxTaskQuantity, MaxTotalPrice: configuration.MaxTotalPrice})
+	detailStore, err := taskdetail.NewSQLiteStore(database)
+	if err != nil {
+		return err
+	}
+	evidenceStore, err := evidencestorage.NewStore(database, configuration.EvidenceDirectory)
+	if err != nil {
+		return err
+	}
+	deviceAuthenticator, err := deviceauth.NewSQLiteAuthenticator(database)
+	if err != nil {
+		return err
+	}
+
+	router, err := server.NewRouter(server.Options{
+		AdminUsername:       configuration.AdminUsername,
+		AdminPasswordBcrypt: configuration.AdminPasswordBcrypt,
+		Sessions:            auth.NewManager(configuration.SessionSecret, configuration.CookieSecure),
+		Tasks:               taskStore,
+		TaskDetails:         detailStore,
+		Evidence:            evidenceStore,
+		DeviceAuthenticator: deviceAuthenticator,
+	})
+	if err != nil {
+		return err
+	}
+
+	err = http.ListenAndServe(listenAddress, router)
 	if errors.Is(err, http.ErrServerClosed) {
 		return nil
 	}

admin/cmd/server/main_test.go

@@ -0,0 +1,9 @@
+package main
+
+import "testing"
+
+func TestListenAddressIsIPv4LoopbackOnly(t *testing.T) {
+	if listenAddress != "127.0.0.1:8080" {
+		t.Fatalf("listenAddress = %q, want loopback-only endpoint", listenAddress)
+	}
+}

admin/go.mod

@@ -5,6 +5,8 @@ go 1.23.0
 require (
 	github.com/gin-gonic/gin v1.11.0
 	github.com/mattn/go-sqlite3 v1.14.49
+	github.com/pressly/goose/v3 v3.24.0
+	golang.org/x/crypto v0.40.0
 )
 
 require (
@@ -22,16 +24,18 @@ require (
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mfridman/interpolate v0.0.2 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
 	github.com/quic-go/qpack v0.5.1 // indirect
 	github.com/quic-go/quic-go v0.54.0 // indirect
+	github.com/sethvargo/go-retry v0.3.0 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/ugorji/go/codec v1.3.0 // indirect
 	go.uber.org/mock v0.5.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
 	golang.org/x/arch v0.20.0 // indirect
-	golang.org/x/crypto v0.40.0 // indirect
 	golang.org/x/mod v0.25.0 // indirect
 	golang.org/x/net v0.42.0 // indirect
 	golang.org/x/sync v0.16.0 // indirect

admin/go.sum

@@ -7,6 +7,8 @@ github.com/cloudwego/base64x v0.1.6/go.mod h1:OFcloc187FXDaYHvrNIjxSe8ncn0OOM8gE
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
 github.com/gabriel-vasile/mimetype v1.4.8 h1:FfZ3gj38NjllZIeJAmMhr+qKL8Wu+nOoI3GqacKw1NM=
 github.com/gabriel-vasile/mimetype v1.4.8/go.mod h1:ByKUIKGjh1ODkGM1asKUbQZOLGrPjydw3hYPU2YU9t8=
 github.com/gin-contrib/sse v1.1.0 h1:n0w2GMuUpWDVp7qSpvze6fAu9iRxJY4Hmj6AmBOU05w=
@@ -28,6 +30,10 @@ github.com/goccy/go-yaml v1.18.0/go.mod h1:XBurs7gK8ATbW4ZPGKgcbrY1Br56PdM69F7Lk
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs4luLUK2k=
+github.com/hashicorp/golang-lru/v2 v2.0.7/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/klauspost/cpuid/v2 v2.3.0 h1:S4CRMLnYUhGeDFDqkGriYKdfoFlDnMtqTiI/sFzhA9Y=
@@ -38,18 +44,28 @@ github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWE
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-sqlite3 v1.14.49 h1:B8jBHC3xhxZgxztrgruTuLucebnULQnx4W7cF7SAE9w=
 github.com/mattn/go-sqlite3 v1.14.49/go.mod h1:6JTjA44L93a0QCyJef5YvlPoKXntQPjzWv5gtm9sB6w=
+github.com/mfridman/interpolate v0.0.2 h1:pnuTK7MQIxxFz1Gr+rjSIx9u7qVjf5VOoM/u6BbAxPY=
+github.com/mfridman/interpolate v0.0.2/go.mod h1:p+7uk6oE07mpE/Ik1b8EckO0O4ZXiGAfshKBWLUM9Xg=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 h1:ZqeYNhU3OHLH3mGKHDcjJRFFRrJa6eAM5H+CtDdOsPc=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
 github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
+github.com/ncruces/go-strftime v0.1.9 h1:bY0MQC28UADQmHmaF5dgpLmImcShSi2kHU9XLdhx/f4=
+github.com/ncruces/go-strftime v0.1.9/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
 github.com/pelletier/go-toml/v2 v2.2.4 h1:mye9XuhQ6gvn5h28+VilKrrPoQVanw5PMw/TB0t5Ec4=
 github.com/pelletier/go-toml/v2 v2.2.4/go.mod h1:2gIqNv+qfxSVS7cM2xJQKtLSTLUE9V8t9Stt+h56mCY=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/pressly/goose/v3 v3.24.0 h1:sFbNms7Bd++2VMq6HSgDHDLWa7kHz1qXzPb3ZIU72VU=
+github.com/pressly/goose/v3 v3.24.0/go.mod h1:rEWreU9uVtt0DHCyLzF9gRcWiiTF/V+528DV+4DORug=
 github.com/quic-go/qpack v0.5.1 h1:giqksBPnT/HDtZ6VhtFKgoLOWmlyo9Ei6u9PqzIMbhI=
 github.com/quic-go/qpack v0.5.1/go.mod h1:+PC4XFrEskIVkcLzpEkbLqq1uCoxPhQuvK5rH1ZgaEg=
 github.com/quic-go/quic-go v0.54.0 h1:6s1YB9QotYI6Ospeiguknbp2Znb/jZYjZLRXn9kMQBg=
 github.com/quic-go/quic-go v0.54.0/go.mod h1:e68ZEaCdyviluZmy44P6Iey98v/Wfz6HCjQEm+l8zTY=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+github.com/sethvargo/go-retry v0.3.0 h1:EEt31A35QhrcRZtrYFDTBg91cqZVnFL2navjDrah2SE=
+github.com/sethvargo/go-retry v0.3.0/go.mod h1:mNX17F0C/HguQMyMyJxcnU471gOZGxCLyYaFyAZraas=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
@@ -65,6 +81,8 @@ github.com/ugorji/go/codec v1.3.0 h1:Qd2W2sQawAfG8XSvzwhBeoGq71zXOC/Q1E9y/wUcsUA
 github.com/ugorji/go/codec v1.3.0/go.mod h1:pRBVtBSKl77K30Bv8R2P+cLSGaTtex6fsA2Wjqmfxj4=
 go.uber.org/mock v0.5.0 h1:KAMbZvZPyBPWgD14IrIQ38QCyjwpvVVV6K/bHl1IwQU=
 go.uber.org/mock v0.5.0/go.mod h1:ge71pBPLYDk7QIi1LupWxdAykm7KIEFchiOqd6z7qMM=
+go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
+go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
 golang.org/x/arch v0.20.0 h1:dx1zTU0MAE98U+TQ8BLl7XsJbgze2WnNKF/8tGp/Q6c=
 golang.org/x/arch v0.20.0/go.mod h1:bdwinDaKcfZUGpH09BB7ZmOfhalA8lQdzl62l8gGWsk=
 golang.org/x/crypto v0.40.0 h1:r4x+VvoG5Fm+eJcxMaY8CQM7Lb0l1lsmjGBQ6s8BfKM=
@@ -88,3 +106,17 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6 h1:5D53IMaUuA5InSeMu9eJtlQXS2NxAhyWQvkKEgXZhHI=
+modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6/go.mod h1:Qz0X07sNOR1jWYCrJMEnbW/X55x206Q7Vt4mz6/wHp4=
+modernc.org/libc v1.55.3 h1:AzcW1mhlPNrRtjS5sS+eW2ISCgSOLLNyFzRh/V3Qj/U=
+modernc.org/libc v1.55.3/go.mod h1:qFXepLhz+JjFThQ4kzwzOjA/y/artDeg+pcYnY+Q83w=
+modernc.org/mathutil v1.6.0 h1:fRe9+AmYlaej+64JsEEhoWuAYBkOtQiMEU7n/XgfYi4=
+modernc.org/mathutil v1.6.0/go.mod h1:Ui5Q9q1TR2gFm0AQRqQUaBWFLAhQpCwNcuhBOSedWPo=
+modernc.org/memory v1.8.0 h1:IqGTL6eFMaDZZhEWwcREgeMXYwmW83LYW8cROZYkg+E=
+modernc.org/memory v1.8.0/go.mod h1:XPZ936zp5OMKGWPqbD3JShgd/ZoQ7899TUuQqxY+peU=
+modernc.org/sqlite v1.34.1 h1:u3Yi6M0N8t9yKRDwhXcyp1eS5/ErhPTBggxWFuR6Hfk=
+modernc.org/sqlite v1.34.1/go.mod h1:pXV2xHxhzXZsgT/RtTFAPY6JJDEvOTcTdwADQCCWD4k=
+modernc.org/strutil v1.2.0 h1:agBi9dp1I+eOnxXeiZawM8F4LawKv4NzGWSaLfyeNZA=
+modernc.org/strutil v1.2.0/go.mod h1:/mdcBmfOibveCTBxUl5B5l6W+TTH1FXPLHZE6bTosX0=
+modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
+modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=

admin/internal/auth/session.go

@@ -0,0 +1,204 @@
+// Package auth 提供内存会话与 CSRF 防护。会话不落库，服务重启会安全地使所有登录失效。
+package auth
+
+import (
+	"crypto/hmac"
+	"crypto/rand"
+	"crypto/sha256"
+	"crypto/subtle"
+	"encoding/base64"
+	"io"
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+)
+
+const (
+	CookieName        = "cmbuyer_session"
+	SessionLifetime   = 8 * time.Hour
+	csrfTokenByteSize = 32
+)
+
+type session struct {
+	csrfToken     string
+	authenticated bool
+	expiresAt     time.Time
+}
+
+// Manager 签发、验证并撤销进程内会话。cookie 仅承载经过 HMAC 签名的随机 session ID。
+type Manager struct {
+	secret       []byte
+	cookieSecure bool
+	now          func() time.Time
+	random       io.Reader
+
+	mu       sync.Mutex
+	sessions map[string]session
+}
+
+// NewManager 创建会话管理器。secret 在启动时已由 config 验证为足够长度。
+func NewManager(secret []byte, cookieSecure bool) *Manager {
+	return &Manager{
+		secret:       append([]byte(nil), secret...),
+		cookieSecure: cookieSecure,
+		now:          time.Now,
+		random:       rand.Reader,
+		sessions:     make(map[string]session),
+	}
+}
+
+// Ensure 返回当前有效会话；不存在或过期时签发匿名会话，以保护登录表单本身的 POST。
+func (manager *Manager) Ensure(writer http.ResponseWriter, request *http.Request) (csrfToken string, authenticated bool) {
+	if id, current, ok := manager.current(request); ok {
+		return current.csrfToken, current.authenticated
+	} else if id != "" {
+		manager.delete(id)
+	}
+
+	id, current := manager.create(false)
+	manager.writeCookie(writer, id, current.expiresAt)
+	return current.csrfToken, false
+}
+
+// IsAuthenticated 只读检查当前请求是否持有有效管理会话；它不会像 Ensure 一样创建匿名会话。
+func (manager *Manager) IsAuthenticated(request *http.Request) bool {
+	_, current, found := manager.current(request)
+	return found && current.authenticated
+}
+
+// VerifyCSRF 只接受当前未过期会话中以恒定时间比较匹配的 token。
+func (manager *Manager) VerifyCSRF(request *http.Request, token string) (authenticated bool, ok bool) {
+	_, current, found := manager.current(request)
+	if !found || token == "" {
+		return false, false
+	}
+
+	if subtle.ConstantTimeCompare([]byte(current.csrfToken), []byte(token)) != 1 {
+		return false, false
+	}
+
+	return current.authenticated, true
+}
+
+// RotateAuthenticated 在登录成功后撤销旧会话并签发全新认证会话，避免 session fixation 与 CSRF 复用。
+func (manager *Manager) RotateAuthenticated(writer http.ResponseWriter, request *http.Request) string {
+	if id, _, ok := manager.current(request); ok {
+		manager.delete(id)
+	}
+
+	id, current := manager.create(true)
+	manager.writeCookie(writer, id, current.expiresAt)
+	return current.csrfToken
+}
+
+// Logout 撤销当前会话并立即清除浏览器 cookie。
+func (manager *Manager) Logout(writer http.ResponseWriter, request *http.Request) {
+	if id, _, ok := manager.current(request); ok {
+		manager.delete(id)
+	}
+	http.SetCookie(writer, &http.Cookie{
+		Name:     CookieName,
+		Value:    "",
+		Path:     "/",
+		MaxAge:   -1,
+		HttpOnly: true,
+		Secure:   manager.cookieSecure,
+		SameSite: http.SameSiteLaxMode,
+	})
+}
+
+func (manager *Manager) current(request *http.Request) (string, session, bool) {
+	cookie, err := request.Cookie(CookieName)
+	if err != nil {
+		return "", session{}, false
+	}
+
+	id, expiresAt, ok := manager.verifyCookie(cookie.Value)
+	if !ok || !manager.now().Before(expiresAt) {
+		return id, session{}, false
+	}
+
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+	current, found := manager.sessions[id]
+	if !found || !manager.now().Before(current.expiresAt) {
+		return id, session{}, false
+	}
+
+	return id, current, true
+}
+
+func (manager *Manager) create(authenticated bool) (string, session) {
+	id := manager.randomToken()
+	current := session{
+		csrfToken:     manager.randomToken(),
+		authenticated: authenticated,
+		expiresAt:     manager.now().Add(SessionLifetime),
+	}
+
+	manager.mu.Lock()
+	manager.sessions[id] = current
+	manager.mu.Unlock()
+	return id, current
+}
+
+func (manager *Manager) delete(id string) {
+	manager.mu.Lock()
+	delete(manager.sessions, id)
+	manager.mu.Unlock()
+}
+
+func (manager *Manager) randomToken() string {
+	bytes := make([]byte, csrfTokenByteSize)
+	if _, err := io.ReadFull(manager.random, bytes); err != nil {
+		panic("crypto/rand failed while creating a session token")
+	}
+	return base64.RawURLEncoding.EncodeToString(bytes)
+}
+
+func (manager *Manager) writeCookie(writer http.ResponseWriter, id string, expiresAt time.Time) {
+	http.SetCookie(writer, &http.Cookie{
+		Name:     CookieName,
+		Value:    manager.signCookie(id, expiresAt),
+		Path:     "/",
+		MaxAge:   int(expiresAt.Sub(manager.now()).Seconds()),
+		Expires:  expiresAt,
+		HttpOnly: true,
+		Secure:   manager.cookieSecure,
+		SameSite: http.SameSiteLaxMode,
+	})
+}
+
+func (manager *Manager) signCookie(id string, expiresAt time.Time) string {
+	payload := id + "." + strconv.FormatInt(expiresAt.Unix(), 10)
+	mac := hmac.New(sha256.New, manager.secret)
+	_, _ = mac.Write([]byte(payload))
+	return payload + "." + base64.RawURLEncoding.EncodeToString(mac.Sum(nil))
+}
+
+func (manager *Manager) verifyCookie(value string) (string, time.Time, bool) {
+	parts := strings.Split(value, ".")
+	if len(parts) != 3 || parts[0] == "" {
+		return "", time.Time{}, false
+	}
+
+	expiresUnix, err := strconv.ParseInt(parts[1], 10, 64)
+	if err != nil {
+		return "", time.Time{}, false
+	}
+	provided, err := base64.RawURLEncoding.DecodeString(parts[2])
+	if err != nil {
+		return "", time.Time{}, false
+	}
+
+	payload := parts[0] + "." + parts[1]
+	mac := hmac.New(sha256.New, manager.secret)
+	_, _ = mac.Write([]byte(payload))
+	if !hmac.Equal(provided, mac.Sum(nil)) {
+		return "", time.Time{}, false
+	}
+
+	return parts[0], time.Unix(expiresUnix, 0), true
+}

admin/internal/auth/session_test.go

@@ -0,0 +1,94 @@
+package auth
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestManagerRejectsTamperedAndExpiredCookies(t *testing.T) {
+	manager := NewManager([]byte(strings.Repeat("s", 32)), true)
+	request := httptest.NewRequest(http.MethodGet, "/login", nil)
+	response := httptest.NewRecorder()
+	csrf, authenticated := manager.Ensure(response, request)
+	if csrf == "" || authenticated {
+		t.Fatalf("Ensure = (%q, %t), want anonymous CSRF session", csrf, authenticated)
+	}
+	cookie := response.Result().Cookies()[0]
+	if !cookie.HttpOnly || !cookie.Secure || cookie.SameSite != http.SameSiteLaxMode || cookie.Path != "/" {
+		t.Fatalf("session cookie is missing security attributes: %#v", cookie)
+	}
+
+	tampered := *cookie
+	tampered.Value = flipCookieValue(t, cookie.Value)
+	tamperedRequest := httptest.NewRequest(http.MethodPost, "/login", nil)
+	tamperedRequest.AddCookie(&tampered)
+	if _, ok := manager.VerifyCSRF(tamperedRequest, csrf); ok {
+		t.Fatal("tampered signed cookie passed CSRF verification")
+	}
+
+	manager.now = func() time.Time { return time.Now().Add(9 * time.Hour) }
+	expiredRequest := httptest.NewRequest(http.MethodPost, "/login", nil)
+	expiredRequest.AddCookie(cookie)
+	if _, ok := manager.VerifyCSRF(expiredRequest, csrf); ok {
+		t.Fatal("expired cookie passed CSRF verification")
+	}
+}
+
+func TestIsAuthenticatedDoesNotCreateOrDependOnCSRFValidation(t *testing.T) {
+	manager := NewManager([]byte(strings.Repeat("s", 32)), false)
+	missingSession := httptest.NewRequest(http.MethodPost, "/tasks/start-purchases", nil)
+	if manager.IsAuthenticated(missingSession) {
+		t.Fatal("missing session was treated as authenticated")
+	}
+	if len(manager.sessions) != 0 {
+		t.Fatalf("read-only authentication check created %d sessions", len(manager.sessions))
+	}
+	anonymousRequest := httptest.NewRequest(http.MethodGet, "/login", nil)
+	anonymousResponse := httptest.NewRecorder()
+	manager.Ensure(anonymousResponse, anonymousRequest)
+	anonymousCookie := anonymousResponse.Result().Cookies()[0]
+	anonymousCheck := httptest.NewRequest(http.MethodPost, "/tasks/start-purchases", nil)
+	anonymousCheck.AddCookie(anonymousCookie)
+	if manager.IsAuthenticated(anonymousCheck) {
+		t.Fatal("anonymous CSRF session was treated as authenticated")
+	}
+
+	loginRequest := httptest.NewRequest(http.MethodPost, "/login", nil)
+	loginRequest.AddCookie(anonymousCookie)
+	authenticatedResponse := httptest.NewRecorder()
+	csrf := manager.RotateAuthenticated(authenticatedResponse, loginRequest)
+	authenticatedCookie := authenticatedResponse.Result().Cookies()[0]
+
+	authenticatedCheck := httptest.NewRequest(http.MethodPost, "/tasks/start-purchases", nil)
+	authenticatedCheck.AddCookie(authenticatedCookie)
+	if !manager.IsAuthenticated(authenticatedCheck) {
+		t.Fatal("valid authenticated session was not recognized")
+	}
+	if authenticated, csrfOK := manager.VerifyCSRF(authenticatedCheck, "wrong-token"); authenticated || csrfOK {
+		t.Fatalf("wrong token result = (%t, %t), want (false, false)", authenticated, csrfOK)
+	}
+
+	validRequest := httptest.NewRequest(http.MethodPost, "/tasks/start-purchases", nil)
+	validRequest.AddCookie(authenticatedCookie)
+	if authenticated, csrfOK := manager.VerifyCSRF(validRequest, csrf); !authenticated || !csrfOK {
+		t.Fatalf("valid token result = (%t, %t), want (true, true)", authenticated, csrfOK)
+	}
+
+	if authenticated, csrfOK := manager.VerifyCSRF(httptest.NewRequest(http.MethodPost, "/tasks/start-purchases", nil), csrf); authenticated || csrfOK {
+		t.Fatalf("missing session result = (%t, %t), want (false, false)", authenticated, csrfOK)
+	}
+}
+
+func flipCookieValue(t *testing.T, value string) string {
+	t.Helper()
+	if value == "" {
+		t.Fatal("cannot tamper with an empty cookie")
+	}
+	if value[0] == 'A' {
+		return "B" + value[1:]
+	}
+	return "A" + value[1:]
+}

admin/internal/config/config.go

@@ -0,0 +1,149 @@
+// Package config 读取采购服务的启动配置。凭据只允许来自显式环境变量，避免把秘密写入代码或仓库。
+package config
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"time"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+const (
+	adminUsernameEnv       = "CMBUYER_ADMIN_USERNAME"
+	adminPasswordBcryptEnv = "CMBUYER_ADMIN_PASSWORD_BCRYPT"
+	sessionSecretEnv       = "CMBUYER_SESSION_SECRET"
+	cookieSecureEnv        = "CMBUYER_COOKIE_SECURE"
+	databaseSourceEnv      = "CMBUYER_DATABASE_SOURCE"
+	authorizationTTLEnv    = "CMBUYER_AUTHORIZATION_TTL"
+	maxTaskQuantityEnv     = "CMBUYER_MAX_TASK_QUANTITY"
+	maxTotalPriceEnv       = "CMBUYER_MAX_TOTAL_PRICE"
+	evidenceDirectoryEnv   = "CMBUYER_EVIDENCE_DIR"
+	minimumSecretLength    = 32
+)
+
+// Config 是启动采购服务所需的最小安全配置。
+type Config struct {
+	AdminUsername       string
+	AdminPasswordBcrypt string
+	SessionSecret       []byte
+	CookieSecure        bool
+	DatabaseSource      string
+	AuthorizationTTL    time.Duration
+	MaxTaskQuantity     int
+	MaxTotalPrice       string
+	EvidenceDirectory   string
+}
+
+// LoadFromEnv 从进程环境读取配置。错误只指出缺失或非法的变量名，绝不回显秘密。
+func LoadFromEnv() (Config, error) {
+	return Load(os.LookupEnv)
+}
+
+// Load 使用 lookup 读取配置，以便在不污染进程环境的情况下测试启动边界。
+func Load(lookup func(string) (string, bool)) (Config, error) {
+	username, err := required(lookup, adminUsernameEnv)
+	if err != nil {
+		return Config{}, err
+	}
+
+	passwordHash, err := required(lookup, adminPasswordBcryptEnv)
+	if err != nil {
+		return Config{}, err
+	}
+	if _, err := bcrypt.Cost([]byte(passwordHash)); err != nil {
+		return Config{}, fmt.Errorf("%s is not a valid bcrypt hash", adminPasswordBcryptEnv)
+	}
+
+	secret, err := required(lookup, sessionSecretEnv)
+	if err != nil {
+		return Config{}, err
+	}
+	if len([]byte(secret)) < minimumSecretLength {
+		return Config{}, fmt.Errorf("%s must be at least %d bytes", sessionSecretEnv, minimumSecretLength)
+	}
+
+	cookieSecure := false
+	if value, present := lookup(cookieSecureEnv); present {
+		switch value {
+		case "true":
+			cookieSecure = true
+		case "false":
+			cookieSecure = false
+		default:
+			return Config{}, fmt.Errorf("%s must be exactly true or false", cookieSecureEnv)
+		}
+	}
+	databaseSource, err := required(lookup, databaseSourceEnv)
+	if err != nil {
+		return Config{}, err
+	}
+	ttlText, err := required(lookup, authorizationTTLEnv)
+	if err != nil {
+		return Config{}, err
+	}
+	ttl, err := time.ParseDuration(ttlText)
+	if err != nil || ttl <= 0 {
+		return Config{}, fmt.Errorf("%s must be a positive duration", authorizationTTLEnv)
+	}
+	quantityText, err := required(lookup, maxTaskQuantityEnv)
+	if err != nil {
+		return Config{}, err
+	}
+	maxQuantity, err := strconv.Atoi(quantityText)
+	if err != nil || maxQuantity < 1 {
+		return Config{}, fmt.Errorf("%s must be a positive integer", maxTaskQuantityEnv)
+	}
+	maxPrice, err := required(lookup, maxTotalPriceEnv)
+	if err != nil {
+		return Config{}, err
+	}
+	if !canonicalMoney(maxPrice) {
+		return Config{}, fmt.Errorf("%s must be a canonical positive decimal", maxTotalPriceEnv)
+	}
+	evidenceDirectory, err := required(lookup, evidenceDirectoryEnv)
+	if err != nil {
+		return Config{}, err
+	}
+	if strings.TrimSpace(evidenceDirectory) != evidenceDirectory || !filepath.IsAbs(evidenceDirectory) {
+		return Config{}, fmt.Errorf("%s must be an absolute path without surrounding whitespace", evidenceDirectoryEnv)
+	}
+
+	return Config{
+		AdminUsername:       username,
+		AdminPasswordBcrypt: passwordHash,
+		SessionSecret:       []byte(secret),
+		CookieSecure:        cookieSecure,
+		DatabaseSource:      databaseSource,
+		AuthorizationTTL:    ttl, MaxTaskQuantity: maxQuantity, MaxTotalPrice: maxPrice,
+		EvidenceDirectory: evidenceDirectory,
+	}, nil
+}
+
+func canonicalMoney(value string) bool {
+	parts := strings.Split(value, ".")
+	if len(parts) != 2 || len(parts[0]) == 0 || len(parts[1]) != 2 || (len(parts[0]) > 1 && parts[0][0] == '0') {
+		return false
+	}
+	for _, part := range parts {
+		for _, ch := range part {
+			if ch < '0' || ch > '9' {
+				return false
+			}
+		}
+	}
+	return strings.Trim(parts[0]+parts[1], "0") != ""
+}
+
+func required(lookup func(string) (string, bool), name string) (string, error) {
+	value, present := lookup(name)
+	if !present || strings.TrimSpace(value) == "" {
+		return "", errors.New(name + " must be set")
+	}
+
+	return value, nil
+}

admin/internal/config/config_test.go

@@ -0,0 +1,98 @@
+package config_test
+
+import (
+	"strings"
+	"testing"
+
+	"cmbuyer/admin/internal/config"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+func TestLoad(t *testing.T) {
+	hash, err := bcrypt.GenerateFromPassword([]byte("test-password"), bcrypt.MinCost)
+	if err != nil {
+		t.Fatalf("generate bcrypt hash: %v", err)
+	}
+
+	values := map[string]string{
+		"CMBUYER_ADMIN_USERNAME":        "admin",
+		"CMBUYER_ADMIN_PASSWORD_BCRYPT": string(hash),
+		"CMBUYER_SESSION_SECRET":        strings.Repeat("s", 32),
+		"CMBUYER_COOKIE_SECURE":         "true",
+		"CMBUYER_DATABASE_SOURCE":       ":memory:",
+		"CMBUYER_AUTHORIZATION_TTL":     "10m",
+		"CMBUYER_MAX_TASK_QUANTITY":     "99",
+		"CMBUYER_MAX_TOTAL_PRICE":       "999.99",
+		"CMBUYER_EVIDENCE_DIR":          t.TempDir(),
+	}
+
+	got, err := config.Load(lookup(values))
+	if err != nil {
+		t.Fatalf("Load: %v", err)
+	}
+	if got.AdminUsername != "admin" || !got.CookieSecure {
+		t.Fatalf("Load returned unexpected public configuration: %#v", got)
+	}
+}
+
+func TestLoadRejectsMissingOrInvalidConfiguration(t *testing.T) {
+	hash, err := bcrypt.GenerateFromPassword([]byte("test-password"), bcrypt.MinCost)
+	if err != nil {
+		t.Fatalf("generate bcrypt hash: %v", err)
+	}
+
+	base := map[string]string{
+		"CMBUYER_ADMIN_USERNAME":        "admin",
+		"CMBUYER_ADMIN_PASSWORD_BCRYPT": string(hash),
+		"CMBUYER_SESSION_SECRET":        strings.Repeat("s", 32),
+		"CMBUYER_DATABASE_SOURCE":       ":memory:",
+		"CMBUYER_AUTHORIZATION_TTL":     "10m",
+		"CMBUYER_MAX_TASK_QUANTITY":     "99",
+		"CMBUYER_MAX_TOTAL_PRICE":       "999.99",
+		"CMBUYER_EVIDENCE_DIR":          t.TempDir(),
+	}
+
+	tests := []struct {
+		name   string
+		mutate func(map[string]string)
+		want   string
+	}{
+		{"missing username", func(values map[string]string) { delete(values, "CMBUYER_ADMIN_USERNAME") }, "CMBUYER_ADMIN_USERNAME"},
+		{"invalid bcrypt", func(values map[string]string) { values["CMBUYER_ADMIN_PASSWORD_BCRYPT"] = "not-a-bcrypt-hash" }, "CMBUYER_ADMIN_PASSWORD_BCRYPT"},
+		{"short secret", func(values map[string]string) { values["CMBUYER_SESSION_SECRET"] = "short" }, "CMBUYER_SESSION_SECRET"},
+		{"invalid secure flag", func(values map[string]string) { values["CMBUYER_COOKIE_SECURE"] = "1" }, "CMBUYER_COOKIE_SECURE"},
+		{"missing database", func(values map[string]string) { delete(values, "CMBUYER_DATABASE_SOURCE") }, "CMBUYER_DATABASE_SOURCE"},
+		{"invalid authorization ttl", func(values map[string]string) { values["CMBUYER_AUTHORIZATION_TTL"] = "0s" }, "CMBUYER_AUTHORIZATION_TTL"},
+		{"invalid maximum quantity", func(values map[string]string) { values["CMBUYER_MAX_TASK_QUANTITY"] = "0" }, "CMBUYER_MAX_TASK_QUANTITY"},
+		{"invalid maximum total price", func(values map[string]string) { values["CMBUYER_MAX_TOTAL_PRICE"] = "1" }, "CMBUYER_MAX_TOTAL_PRICE"},
+		{"missing evidence directory", func(values map[string]string) { delete(values, "CMBUYER_EVIDENCE_DIR") }, "CMBUYER_EVIDENCE_DIR"},
+		{"relative evidence directory", func(values map[string]string) { values["CMBUYER_EVIDENCE_DIR"] = "evidence" }, "CMBUYER_EVIDENCE_DIR"},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			values := copyValues(base)
+			test.mutate(values)
+			_, err := config.Load(lookup(values))
+			if err == nil || !strings.Contains(err.Error(), test.want) {
+				t.Fatalf("Load error = %v, want mention of %s", err, test.want)
+			}
+		})
+	}
+}
+
+func lookup(values map[string]string) func(string) (string, bool) {
+	return func(key string) (string, bool) {
+		value, ok := values[key]
+		return value, ok
+	}
+}
+
+func copyValues(values map[string]string) map[string]string {
+	copy := make(map[string]string, len(values))
+	for key, value := range values {
+		copy[key] = value
+	}
+	return copy
+}

admin/internal/deviceauth/credentials.go

@@ -0,0 +1,212 @@
+package deviceauth
+
+import (
+	"context"
+	"crypto/rand"
+	"crypto/sha256"
+	"database/sql"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"io"
+	"strings"
+	"sync"
+	"time"
+	"unicode"
+)
+
+const (
+	StatusActive  = "ACTIVE"
+	StatusRevoked = "REVOKED"
+)
+
+var (
+	ErrInvalidCredential  = errors.New("invalid device credential input")
+	ErrCredentialNotFound = errors.New("device credential not found")
+)
+
+type Credential struct {
+	DeviceID    string     `json:"device_id"`
+	DisplayName string     `json:"display_name"`
+	Status      string     `json:"status"`
+	CreatedAt   time.Time  `json:"created_at"`
+	RevokedAt   *time.Time `json:"revoked_at,omitempty"`
+}
+
+// IssuedCredential is the only value that can carry the plaintext token. It is returned only
+// after SQLite has committed the hash and is intended for the management CLI's one stdout write.
+type IssuedCredential struct {
+	Credential
+	Token string `json:"-"`
+}
+
+type CredentialStore struct {
+	database *sql.DB
+	now      func() time.Time
+	random   io.Reader
+	randomMu sync.Mutex
+}
+
+func NewCredentialStore(database *sql.DB) (*CredentialStore, error) {
+	if database == nil {
+		return nil, errors.New("device credential database is required")
+	}
+	if _, err := database.Exec("SELECT device_id FROM device_credentials LIMIT 1"); err != nil {
+		return nil, errors.New("device credential migration is not available")
+	}
+	return &CredentialStore{database: database, now: time.Now, random: rand.Reader}, nil
+}
+
+func (store *CredentialStore) Issue(ctx context.Context, displayName string) (IssuedCredential, error) {
+	if !ValidDisplayName(displayName) {
+		return IssuedCredential{}, ErrInvalidCredential
+	}
+	randomBytes := make([]byte, 16+32)
+	store.randomMu.Lock()
+	_, randomErr := io.ReadFull(store.random, randomBytes)
+	store.randomMu.Unlock()
+	if randomErr != nil {
+		return IssuedCredential{}, fmt.Errorf("generate device credential: %w", randomErr)
+	}
+	deviceID := formatUUIDv4(randomBytes[:16])
+	token := hex.EncodeToString(randomBytes[16:])
+	tokenHash := sha256.Sum256(randomBytes[16:])
+	createdAt := store.now().UTC()
+	if createdAt.IsZero() {
+		return IssuedCredential{}, errors.New("device credential clock is invalid")
+	}
+	_, err := store.database.ExecContext(ctx, `INSERT INTO device_credentials
+		(device_id, display_name, token_sha256, status, created_at, revoked_at)
+		VALUES (?, ?, ?, ?, ?, NULL)`,
+		deviceID, displayName, tokenHash[:], StatusActive, createdAt.Format(time.RFC3339Nano))
+	if err != nil {
+		return IssuedCredential{}, fmt.Errorf("persist device credential: %w", err)
+	}
+	return IssuedCredential{Credential: Credential{
+		DeviceID: deviceID, DisplayName: displayName, Status: StatusActive, CreatedAt: createdAt,
+	}, Token: token}, nil
+}
+
+func (store *CredentialStore) List(ctx context.Context) ([]Credential, error) {
+	rows, err := store.database.QueryContext(ctx, `SELECT device_id, display_name, status, created_at, revoked_at
+		FROM device_credentials ORDER BY created_at, device_id`)
+	if err != nil {
+		return nil, fmt.Errorf("list device credentials: %w", err)
+	}
+	defer rows.Close()
+	credentials := make([]Credential, 0)
+	for rows.Next() {
+		credential, err := scanCredential(rows)
+		if err != nil {
+			return nil, err
+		}
+		credentials = append(credentials, credential)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("list device credentials: %w", err)
+	}
+	return credentials, nil
+}
+
+func (store *CredentialStore) Revoke(ctx context.Context, deviceID string) (Credential, bool, error) {
+	if !ValidDeviceID(deviceID) {
+		return Credential{}, false, ErrInvalidCredential
+	}
+	revokedAt := store.now().UTC()
+	if revokedAt.IsZero() {
+		return Credential{}, false, errors.New("device credential clock is invalid")
+	}
+	transaction, err := store.database.BeginTx(ctx, nil)
+	if err != nil {
+		return Credential{}, false, fmt.Errorf("begin device credential revocation: %w", err)
+	}
+	defer transaction.Rollback()
+	result, err := transaction.ExecContext(ctx, `UPDATE device_credentials
+		SET status = ?, revoked_at = ? WHERE device_id = ? AND status = ?`,
+		StatusRevoked, revokedAt.Format(time.RFC3339Nano), deviceID, StatusActive)
+	if err != nil {
+		return Credential{}, false, fmt.Errorf("revoke device credential: %w", err)
+	}
+	changedRows, err := result.RowsAffected()
+	if err != nil {
+		return Credential{}, false, fmt.Errorf("inspect device credential revocation: %w", err)
+	}
+	credential, err := scanCredential(transaction.QueryRowContext(ctx, `SELECT device_id, display_name, status, created_at, revoked_at
+		FROM device_credentials WHERE device_id = ?`, deviceID))
+	if errors.Is(err, sql.ErrNoRows) {
+		return Credential{}, false, ErrCredentialNotFound
+	}
+	if err != nil {
+		return Credential{}, false, err
+	}
+	if err := transaction.Commit(); err != nil {
+		return Credential{}, false, fmt.Errorf("commit device credential revocation: %w", err)
+	}
+	return credential, changedRows == 1, nil
+}
+
+type rowScanner interface {
+	Scan(...any) error
+}
+
+func scanCredential(row rowScanner) (Credential, error) {
+	var credential Credential
+	var created string
+	var revoked sql.NullString
+	if err := row.Scan(&credential.DeviceID, &credential.DisplayName, &credential.Status, &created, &revoked); err != nil {
+		return Credential{}, err
+	}
+	if !ValidDeviceID(credential.DeviceID) || !ValidDisplayName(credential.DisplayName) || (credential.Status != StatusActive && credential.Status != StatusRevoked) {
+		return Credential{}, errors.New("stored device credential metadata is invalid")
+	}
+	createdAt, err := parseStoredTime(created)
+	if err != nil {
+		return Credential{}, err
+	}
+	credential.CreatedAt = createdAt
+	if revoked.Valid {
+		revokedAt, err := parseStoredTime(revoked.String)
+		if err != nil {
+			return Credential{}, err
+		}
+		if revokedAt.Before(createdAt) {
+			return Credential{}, errors.New("stored device credential status is invalid")
+		}
+		credential.RevokedAt = &revokedAt
+	}
+	if (credential.Status == StatusActive) != (credential.RevokedAt == nil) {
+		return Credential{}, errors.New("stored device credential status is invalid")
+	}
+	return credential, nil
+}
+
+func ValidDisplayName(value string) bool {
+	if value == "" || len([]rune(value)) > 128 || strings.TrimSpace(value) != value {
+		return false
+	}
+	for _, character := range value {
+		if unicode.IsControl(character) {
+			return false
+		}
+	}
+	return true
+}
+
+func parseStoredTime(value string) (time.Time, error) {
+	if strings.TrimSpace(value) != value || !strings.HasSuffix(value, "Z") {
+		return time.Time{}, errors.New("stored device credential time is invalid")
+	}
+	parsed, err := time.Parse(time.RFC3339Nano, value)
+	if err != nil || parsed.Location() != time.UTC {
+		return time.Time{}, errors.New("stored device credential time is invalid")
+	}
+	return parsed, nil
+}
+
+func formatUUIDv4(bytes []byte) string {
+	copyBytes := append([]byte(nil), bytes...)
+	copyBytes[6] = (copyBytes[6] & 0x0f) | 0x40
+	copyBytes[8] = (copyBytes[8] & 0x3f) | 0x80
+	encoded := hex.EncodeToString(copyBytes)
+	return encoded[:8] + "-" + encoded[8:12] + "-" + encoded[12:16] + "-" + encoded[16:20] + "-" + encoded[20:]
+}

admin/internal/deviceauth/deviceauth.go

@@ -0,0 +1,168 @@
+// Package deviceauth owns the machine identity boundary shared by all device routes.
+package deviceauth
+
+import (
+	"crypto/sha256"
+	"crypto/subtle"
+	"database/sql"
+	"encoding/hex"
+	"errors"
+	"net/http"
+	"strings"
+)
+
+const (
+	AuthorizationHeader = "Authorization"
+	DeviceIDHeader      = "X-CMBuyer-Device-ID"
+	tokenHexLength      = 64
+)
+
+var (
+	// ErrUnauthenticated deliberately covers every credential defect. Callers must not reveal
+	// whether a device exists, is revoked, or supplied a mismatched token.
+	ErrUnauthenticated = errors.New("device authentication failed")
+	// ErrUnavailable is distinct so a storage outage is not disguised as a bad credential.
+	// HTTP callers still return no diagnostic body because database details are server-only.
+	ErrUnavailable = errors.New("device authentication unavailable")
+)
+
+type Principal struct {
+	ID string
+}
+
+type Authenticator interface {
+	Authenticate(*http.Request) (Principal, error)
+}
+
+// RejectAllAuthenticator is useful for tests and for fail-closed wiring where no credential
+// store is available. Production startup uses SQLiteAuthenticator.
+type RejectAllAuthenticator struct{}
+
+func (RejectAllAuthenticator) Authenticate(*http.Request) (Principal, error) {
+	return Principal{}, ErrUnauthenticated
+}
+
+type SQLiteAuthenticator struct {
+	database *sql.DB
+}
+
+func NewSQLiteAuthenticator(database *sql.DB) (*SQLiteAuthenticator, error) {
+	if database == nil {
+		return nil, errors.New("device credential database is required")
+	}
+	if _, err := database.Exec("SELECT device_id FROM device_credentials LIMIT 1"); err != nil {
+		return nil, errors.New("device credential migration is not available")
+	}
+	return &SQLiteAuthenticator{database: database}, nil
+}
+
+func (authenticator *SQLiteAuthenticator) Authenticate(request *http.Request) (Principal, error) {
+	if request == nil {
+		return Principal{}, ErrUnauthenticated
+	}
+	deviceID, token, ok := requestCredentials(request)
+	if !ok {
+		return Principal{}, ErrUnauthenticated
+	}
+
+	candidateHash := sha256.Sum256(token)
+	var storedHash []byte
+	var hashType string
+	var hashLength sql.NullInt64
+	var status sql.NullString
+	var revokedAt sql.NullString
+	var found bool
+	err := authenticator.database.QueryRowContext(
+		request.Context(),
+		`SELECT CASE WHEN credentials.device_id IS NULL THEN zeroblob(32) ELSE credentials.token_sha256 END,
+		        typeof(credentials.token_sha256),
+		        length(credentials.token_sha256),
+		        credentials.status,
+		        credentials.revoked_at,
+		        credentials.device_id IS NOT NULL
+		 FROM (SELECT 1) AS singleton
+		 LEFT JOIN device_credentials AS credentials ON credentials.device_id = ?`,
+		deviceID,
+	).Scan(&storedHash, &hashType, &hashLength, &status, &revokedAt, &found)
+	if err != nil {
+		return Principal{}, ErrUnavailable
+	}
+	if len(storedHash) != sha256.Size {
+		return Principal{}, ErrUnavailable
+	}
+	matched := subtle.ConstantTimeCompare(candidateHash[:], storedHash) == 1
+	if !found {
+		// The LEFT JOIN supplies a 32-byte dummy hash, so unknown ids take the same compare path
+		// as known credentials without requiring a plaintext token lookup.
+		return Principal{}, ErrUnauthenticated
+	}
+	if hashType != "blob" || !hashLength.Valid || hashLength.Int64 != sha256.Size || len(storedHash) != sha256.Size || !status.Valid {
+		return Principal{}, ErrUnavailable
+	}
+	switch status.String {
+	case StatusActive:
+		if revokedAt.Valid {
+			return Principal{}, ErrUnavailable
+		}
+	case StatusRevoked:
+		if !revokedAt.Valid {
+			return Principal{}, ErrUnavailable
+		}
+		if _, err := parseStoredTime(revokedAt.String); err != nil {
+			return Principal{}, ErrUnavailable
+		}
+	default:
+		return Principal{}, ErrUnavailable
+	}
+	if !matched || status.String == StatusRevoked {
+		return Principal{}, ErrUnauthenticated
+	}
+	return Principal{ID: deviceID}, nil
+}
+
+func requestCredentials(request *http.Request) (string, []byte, bool) {
+	authorizations := request.Header.Values(AuthorizationHeader)
+	deviceIDs := request.Header.Values(DeviceIDHeader)
+	if len(authorizations) != 1 || len(deviceIDs) != 1 {
+		return "", nil, false
+	}
+	authorization := authorizations[0]
+	if len(authorization) != len("Bearer ")+tokenHexLength || !strings.EqualFold(authorization[:len("Bearer")], "Bearer") || authorization[len("Bearer")] != ' ' {
+		return "", nil, false
+	}
+	tokenHex := authorization[len("Bearer "):]
+	if !validLowerHex(tokenHex, tokenHexLength) || !ValidDeviceID(deviceIDs[0]) {
+		return "", nil, false
+	}
+	token, err := hex.DecodeString(tokenHex)
+	if err != nil {
+		return "", nil, false
+	}
+	return deviceIDs[0], token, true
+}
+
+func ValidDeviceID(value string) bool {
+	if len(value) != 36 {
+		return false
+	}
+	for index, character := range value {
+		if index == 8 || index == 13 || index == 18 || index == 23 {
+			if character != '-' {
+				return false
+			}
+			continue
+		}
+		if !(character >= '0' && character <= '9' || character >= 'a' && character <= 'f') {
+			return false
+		}
+	}
+	return value[14] == '4' && (value[19] == '8' || value[19] == '9' || value[19] == 'a' || value[19] == 'b')
+}
+
+func validLowerHex(value string, length int) bool {
+	if len(value) != length {
+		return false
+	}
+	decoded, err := hex.DecodeString(value)
+	return err == nil && hex.EncodeToString(decoded) == value
+}

admin/internal/deviceauth/deviceauth_test.go

@@ -0,0 +1,407 @@
+package deviceauth
+
+import (
+	"context"
+	"crypto/rand"
+	"crypto/sha256"
+	"database/sql"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"cmbuyer/admin/internal/migrations"
+	"cmbuyer/admin/internal/storage/sqlite"
+)
+
+func TestIssueStoresOnlyRawTokenHashAndGenericJSONOmitsSecret(t *testing.T) {
+	database, store := newCredentialStore(t)
+	first, err := store.Issue(context.Background(), "采购工具一号")
+	if err != nil {
+		t.Fatalf("Issue first: %v", err)
+	}
+	second, err := store.Issue(context.Background(), "采购工具二号")
+	if err != nil {
+		t.Fatalf("Issue second: %v", err)
+	}
+	if first.DeviceID == second.DeviceID || first.Token == second.Token || !ValidDeviceID(first.DeviceID) || !validLowerHex(first.Token, tokenHexLength) {
+		t.Fatalf("issued identifiers are not independent canonical values")
+	}
+
+	rawToken, err := hex.DecodeString(first.Token)
+	if err != nil {
+		t.Fatalf("decode issued token: %v", err)
+	}
+	wantHash := sha256.Sum256(rawToken)
+	var storedHash []byte
+	var storageType string
+	if err := database.QueryRow(`SELECT token_sha256, typeof(token_sha256) FROM device_credentials WHERE device_id = ?`, first.DeviceID).Scan(&storedHash, &storageType); err != nil {
+		t.Fatalf("read stored hash: %v", err)
+	}
+	if storageType != "blob" || len(storedHash) != sha256.Size || !equalBytes(storedHash, wantHash[:]) {
+		t.Fatalf("stored hash type/length/value = %q/%d/%t", storageType, len(storedHash), equalBytes(storedHash, wantHash[:]))
+	}
+	var leakedCopies int
+	if err := database.QueryRow(`SELECT COUNT(*) FROM device_credentials WHERE CAST(token_sha256 AS TEXT) IN (?, ?)`, first.Token, hex.EncodeToString(wantHash[:])).Scan(&leakedCopies); err != nil {
+		t.Fatalf("search token copies: %v", err)
+	}
+	if leakedCopies != 0 {
+		t.Fatal("database stored a plaintext or hex-encoded token/hash copy")
+	}
+	encoded, err := json.Marshal(first)
+	if err != nil {
+		t.Fatalf("marshal issued credential: %v", err)
+	}
+	if strings.Contains(string(encoded), first.Token) || strings.Contains(string(encoded), "token") {
+		t.Fatalf("generic serialization disclosed token field: %s", encoded)
+	}
+}
+
+func TestAuthenticateStrictHeaderMatrixAndBinding(t *testing.T) {
+	_, store := newCredentialStore(t)
+	first, err := store.Issue(context.Background(), "one")
+	if err != nil {
+		t.Fatalf("issue first: %v", err)
+	}
+	second, err := store.Issue(context.Background(), "two")
+	if err != nil {
+		t.Fatalf("issue second: %v", err)
+	}
+	authenticator := authenticatorForStore(t, store)
+
+	for _, scheme := range []string{"Bearer", "bearer", "BEARER"} {
+		request := credentialRequest(first.DeviceID, scheme+" "+first.Token)
+		principal, err := authenticator.Authenticate(request)
+		if err != nil || principal.ID != first.DeviceID {
+			t.Fatalf("scheme %q Authenticate = (%q, %v)", scheme, principal.ID, err)
+		}
+	}
+
+	unknownID := newRuntimeUUID(t)
+	wrongToken := newRuntimeToken(t)
+	tests := []struct {
+		name   string
+		mutate func(*http.Request)
+	}{
+		{"missing authorization", func(request *http.Request) { request.Header.Del(AuthorizationHeader) }},
+		{"missing device", func(request *http.Request) { request.Header.Del(DeviceIDHeader) }},
+		{"empty authorization", func(request *http.Request) { request.Header.Set(AuthorizationHeader, "") }},
+		{"empty device", func(request *http.Request) { request.Header.Set(DeviceIDHeader, "") }},
+		{"duplicate authorization", func(request *http.Request) { request.Header.Add(AuthorizationHeader, "Bearer "+first.Token) }},
+		{"duplicate device", func(request *http.Request) { request.Header.Add(DeviceIDHeader, first.DeviceID) }},
+		{"combined authorization", func(request *http.Request) {
+			request.Header.Set(AuthorizationHeader, "Bearer "+first.Token+", Bearer "+first.Token)
+		}},
+		{"combined device", func(request *http.Request) { request.Header.Set(DeviceIDHeader, first.DeviceID+", "+first.DeviceID) }},
+		{"extra separator", func(request *http.Request) { request.Header.Set(AuthorizationHeader, "Bearer  "+first.Token) }},
+		{"tab separator", func(request *http.Request) { request.Header.Set(AuthorizationHeader, "Bearer\t"+first.Token) }},
+		{"uppercase token", func(request *http.Request) {
+			request.Header.Set(AuthorizationHeader, "Bearer "+strings.ToUpper(first.Token))
+		}},
+		{"short token", func(request *http.Request) { request.Header.Set(AuthorizationHeader, "Bearer "+first.Token[:62]) }},
+		{"long token", func(request *http.Request) { request.Header.Set(AuthorizationHeader, "Bearer "+first.Token+"00") }},
+		{"non hex token", func(request *http.Request) { request.Header.Set(AuthorizationHeader, "Bearer "+first.Token[:63]+"g") }},
+		{"token separator", func(request *http.Request) {
+			request.Header.Set(AuthorizationHeader, "Bearer "+first.Token[:32]+"-"+first.Token[33:])
+		}},
+		{"uppercase device", func(request *http.Request) { request.Header.Set(DeviceIDHeader, strings.ToUpper(first.DeviceID)) }},
+		{"padded device", func(request *http.Request) { request.Header.Set(DeviceIDHeader, " "+first.DeviceID) }},
+		{"wrong uuid version", func(request *http.Request) {
+			request.Header.Set(DeviceIDHeader, first.DeviceID[:14]+"3"+first.DeviceID[15:])
+		}},
+		{"wrong uuid variant", func(request *http.Request) {
+			request.Header.Set(DeviceIDHeader, first.DeviceID[:19]+"7"+first.DeviceID[20:])
+		}},
+		{"unknown device", func(request *http.Request) { request.Header.Set(DeviceIDHeader, unknownID) }},
+		{"wrong token", func(request *http.Request) { request.Header.Set(AuthorizationHeader, "Bearer "+wrongToken) }},
+		{"token device mismatch", func(request *http.Request) { request.Header.Set(DeviceIDHeader, second.DeviceID) }},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			request := credentialRequest(first.DeviceID, "Bearer "+first.Token)
+			test.mutate(request)
+			principal, err := authenticator.Authenticate(request)
+			if !errors.Is(err, ErrUnauthenticated) || principal != (Principal{}) {
+				t.Fatalf("Authenticate = (%#v, %v), want empty unauthenticated", principal, err)
+			}
+		})
+	}
+	if principal, err := authenticator.Authenticate(nil); !errors.Is(err, ErrUnauthenticated) || principal != (Principal{}) {
+		t.Fatalf("Authenticate(nil) = (%#v, %v)", principal, err)
+	}
+}
+
+func TestRevokeIsImmediateAndIdempotent(t *testing.T) {
+	_, store := newCredentialStore(t)
+	issued, err := store.Issue(context.Background(), "device")
+	if err != nil {
+		t.Fatalf("Issue: %v", err)
+	}
+	authenticator := authenticatorForStore(t, store)
+	request := credentialRequest(issued.DeviceID, "Bearer "+issued.Token)
+	if _, err := authenticator.Authenticate(request); err != nil {
+		t.Fatalf("Authenticate before revoke: %v", err)
+	}
+
+	first, changed, err := store.Revoke(context.Background(), issued.DeviceID)
+	if err != nil || !changed || first.Status != StatusRevoked || first.RevokedAt == nil {
+		t.Fatalf("first Revoke = (%#v, %t, %v)", first, changed, err)
+	}
+	if principal, err := authenticator.Authenticate(request); !errors.Is(err, ErrUnauthenticated) || principal != (Principal{}) {
+		t.Fatalf("Authenticate after committed revoke = (%#v, %v)", principal, err)
+	}
+	second, changed, err := store.Revoke(context.Background(), issued.DeviceID)
+	if err != nil || changed || second.RevokedAt == nil || !second.RevokedAt.Equal(*first.RevokedAt) {
+		t.Fatalf("second Revoke = (%#v, %t, %v)", second, changed, err)
+	}
+	listed, err := store.List(context.Background())
+	if err != nil || len(listed) != 1 || listed[0].Status != StatusRevoked {
+		t.Fatalf("List = (%#v, %v)", listed, err)
+	}
+}
+
+func TestConcurrentAuthenticationAndRevocation(t *testing.T) {
+	_, store := newCredentialStore(t)
+	issued, err := store.Issue(context.Background(), "concurrent")
+	if err != nil {
+		t.Fatalf("Issue: %v", err)
+	}
+	authenticator := authenticatorForStore(t, store)
+	request := func() *http.Request { return credentialRequest(issued.DeviceID, "Bearer "+issued.Token) }
+	start := make(chan struct{})
+	results := make(chan error, 16)
+	var wait sync.WaitGroup
+	for index := 0; index < 16; index++ {
+		wait.Add(1)
+		go func() {
+			defer wait.Done()
+			<-start
+			_, err := authenticator.Authenticate(request())
+			results <- err
+		}()
+	}
+	close(start)
+	if _, _, err := store.Revoke(context.Background(), issued.DeviceID); err != nil {
+		t.Fatalf("Revoke: %v", err)
+	}
+	wait.Wait()
+	close(results)
+	for err := range results {
+		if err != nil && !errors.Is(err, ErrUnauthenticated) {
+			t.Fatalf("concurrent Authenticate error = %v", err)
+		}
+	}
+	for index := 0; index < 16; index++ {
+		if _, err := authenticator.Authenticate(request()); !errors.Is(err, ErrUnauthenticated) {
+			t.Fatalf("post-commit Authenticate %d error = %v", index, err)
+		}
+	}
+}
+
+func TestAuthenticationDatabaseFaultAndCorruptionAreUnavailable(t *testing.T) {
+	database, store := newCredentialStore(t)
+	issued, err := store.Issue(context.Background(), "device")
+	if err != nil {
+		t.Fatalf("Issue: %v", err)
+	}
+	authenticator := authenticatorForStore(t, store)
+	if err := database.Close(); err != nil {
+		t.Fatalf("close database: %v", err)
+	}
+	if _, err := authenticator.Authenticate(credentialRequest(issued.DeviceID, "Bearer "+issued.Token)); !errors.Is(err, ErrUnavailable) {
+		t.Fatalf("closed database Authenticate error = %v", err)
+	}
+
+	corruptDB, err := sqlite.Open(filepath.Join(t.TempDir(), "corrupt.db"))
+	if err != nil {
+		t.Fatalf("open corrupt database: %v", err)
+	}
+	t.Cleanup(func() { _ = corruptDB.Close() })
+	if _, err := corruptDB.Exec(`CREATE TABLE device_credentials (device_id TEXT PRIMARY KEY, token_sha256 BLOB, status TEXT, revoked_at TEXT)`); err != nil {
+		t.Fatalf("create corrupt table: %v", err)
+	}
+	corruptAuthenticator, err := NewSQLiteAuthenticator(corruptDB)
+	if err != nil {
+		t.Fatalf("new corrupt authenticator: %v", err)
+	}
+	tests := []struct {
+		name      string
+		hashValue func([sha256.Size]byte) any
+		status    string
+		revokedAt any
+	}{
+		{name: "null hash", hashValue: func([sha256.Size]byte) any { return nil }, status: StatusActive},
+		{name: "matching text hash", hashValue: func(hash [sha256.Size]byte) any { return string(hash[:]) }, status: StatusActive},
+		{name: "unknown status", hashValue: func(hash [sha256.Size]byte) any { return hash[:] }, status: "BROKEN"},
+		{name: "active with revoked time", hashValue: func(hash [sha256.Size]byte) any { return hash[:] }, status: StatusActive, revokedAt: "2026-08-04T00:00:00Z"},
+		{name: "revoked without time", hashValue: func(hash [sha256.Size]byte) any { return hash[:] }, status: StatusRevoked},
+		{name: "revoked with invalid time", hashValue: func(hash [sha256.Size]byte) any { return hash[:] }, status: StatusRevoked, revokedAt: "not-a-time"},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			rawToken, token := newRuntimeTokenPair(t)
+			hash := sha256.Sum256(rawToken)
+			deviceID := newRuntimeUUID(t)
+			if _, err := corruptDB.Exec(`INSERT INTO device_credentials VALUES (?, ?, ?, ?)`, deviceID, test.hashValue(hash), test.status, test.revokedAt); err != nil {
+				t.Fatalf("insert corrupt row: %v", err)
+			}
+			principal, err := corruptAuthenticator.Authenticate(credentialRequest(deviceID, "Bearer "+token))
+			if !errors.Is(err, ErrUnavailable) || principal != (Principal{}) {
+				t.Fatalf("corrupt Authenticate = (%#v, %v), want unavailable", principal, err)
+			}
+		})
+	}
+}
+
+func TestCredentialAuthenticationSurvivesDatabaseReopen(t *testing.T) {
+	databaseSource := filepath.Join(t.TempDir(), "reopen.db")
+	database, err := sqlite.Open(databaseSource)
+	if err != nil {
+		t.Fatalf("open database: %v", err)
+	}
+	if err := migrations.Up(context.Background(), database, deviceMigrationDirectory(t)); err != nil {
+		_ = database.Close()
+		t.Fatalf("migrate database: %v", err)
+	}
+	store, err := NewCredentialStore(database)
+	if err != nil {
+		_ = database.Close()
+		t.Fatalf("new store: %v", err)
+	}
+	issued, err := store.Issue(context.Background(), "reopen")
+	if err != nil {
+		_ = database.Close()
+		t.Fatalf("issue: %v", err)
+	}
+	if err := database.Close(); err != nil {
+		t.Fatalf("close database: %v", err)
+	}
+
+	reopened, err := sqlite.Open(databaseSource)
+	if err != nil {
+		t.Fatalf("reopen database: %v", err)
+	}
+	defer reopened.Close()
+	authenticator, err := NewSQLiteAuthenticator(reopened)
+	if err != nil {
+		t.Fatalf("new reopened authenticator: %v", err)
+	}
+	principal, err := authenticator.Authenticate(credentialRequest(issued.DeviceID, "Bearer "+issued.Token))
+	if err != nil || principal.ID != issued.DeviceID {
+		t.Fatalf("Authenticate after reopen = (%#v, %v)", principal, err)
+	}
+}
+
+func TestCredentialInputAndMigrationAreRequired(t *testing.T) {
+	database, err := sqlite.Open(filepath.Join(t.TempDir(), "unmigrated.db"))
+	if err != nil {
+		t.Fatalf("open database: %v", err)
+	}
+	t.Cleanup(func() { _ = database.Close() })
+	if _, err := NewCredentialStore(database); err == nil {
+		t.Fatal("NewCredentialStore accepted an unmigrated database")
+	}
+	if _, err := NewSQLiteAuthenticator(database); err == nil {
+		t.Fatal("NewSQLiteAuthenticator accepted an unmigrated database")
+	}
+
+	_, store := newCredentialStore(t)
+	for _, name := range []string{"", " leading", "trailing ", "line\nbreak", strings.Repeat("名", 129)} {
+		if _, err := store.Issue(context.Background(), name); !errors.Is(err, ErrInvalidCredential) {
+			t.Fatalf("Issue(%q) error = %v", name, err)
+		}
+	}
+	if _, _, err := store.Revoke(context.Background(), "not-a-uuid"); !errors.Is(err, ErrInvalidCredential) {
+		t.Fatalf("Revoke invalid id error = %v", err)
+	}
+	if _, _, err := store.Revoke(context.Background(), newRuntimeUUID(t)); !errors.Is(err, ErrCredentialNotFound) {
+		t.Fatalf("Revoke unknown id error = %v", err)
+	}
+}
+
+func newCredentialStore(t *testing.T) (*sql.DB, *CredentialStore) {
+	t.Helper()
+	databaseSource := filepath.Join(t.TempDir(), "device-auth.db") + "?_busy_timeout=5000&_journal_mode=WAL"
+	database, err := sqlite.Open(databaseSource)
+	if err != nil {
+		t.Fatalf("open database: %v", err)
+	}
+	t.Cleanup(func() { _ = database.Close() })
+	if err := migrations.Up(context.Background(), database, deviceMigrationDirectory(t)); err != nil {
+		t.Fatalf("migrate database: %v", err)
+	}
+	store, err := NewCredentialStore(database)
+	if err != nil {
+		t.Fatalf("NewCredentialStore: %v", err)
+	}
+	store.now = func() time.Time { return time.Date(2026, 8, 4, 12, 0, 0, 123, time.UTC) }
+	return database, store
+}
+
+func authenticatorForStore(t *testing.T, store *CredentialStore) *SQLiteAuthenticator {
+	t.Helper()
+	authenticator, err := NewSQLiteAuthenticator(store.database)
+	if err != nil {
+		t.Fatalf("NewSQLiteAuthenticator: %v", err)
+	}
+	return authenticator
+}
+
+func credentialRequest(deviceID, authorization string) *http.Request {
+	request := httptest.NewRequest(http.MethodPost, "/api/v1/tasks/id/evidence", nil)
+	request.Header.Set(DeviceIDHeader, deviceID)
+	request.Header.Set(AuthorizationHeader, authorization)
+	return request
+}
+
+func newRuntimeToken(t *testing.T) string {
+	t.Helper()
+	_, token := newRuntimeTokenPair(t)
+	return token
+}
+
+func newRuntimeTokenPair(t *testing.T) ([]byte, string) {
+	t.Helper()
+	raw := make([]byte, 32)
+	if _, err := rand.Read(raw); err != nil {
+		t.Fatalf("generate runtime token: %v", err)
+	}
+	return raw, hex.EncodeToString(raw)
+}
+
+func newRuntimeUUID(t *testing.T) string {
+	t.Helper()
+	raw := make([]byte, 16)
+	if _, err := rand.Read(raw); err != nil {
+		t.Fatalf("generate runtime UUID: %v", err)
+	}
+	return formatUUIDv4(raw)
+}
+
+func equalBytes(left, right []byte) bool {
+	if len(left) != len(right) {
+		return false
+	}
+	for index := range left {
+		if left[index] != right[index] {
+			return false
+		}
+	}
+	return true
+}
+
+func deviceMigrationDirectory(t *testing.T) string {
+	t.Helper()
+	_, file, _, ok := runtime.Caller(0)
+	if !ok {
+		t.Fatal("locate migrations")
+	}
+	return filepath.Join(filepath.Dir(file), "..", "..", "migrations")
+}

admin/internal/domain/authorization.go

@@ -0,0 +1,66 @@
+package domain
+
+import (
+	"errors"
+	"time"
+)
+
+var ErrInvalidAuthorizationTransition = errors.New("invalid authorization status transition")
+
+type AuthorizationStatus string
+
+const (
+	AuthorizationStatusActive    AuthorizationStatus = "ACTIVE"
+	AuthorizationStatusClaimed   AuthorizationStatus = "CLAIMED"
+	AuthorizationStatusFenced    AuthorizationStatus = "FENCED"
+	AuthorizationStatusConsumed  AuthorizationStatus = "CONSUMED"
+	AuthorizationStatusExpired   AuthorizationStatus = "EXPIRED"
+	AuthorizationStatusAbandoned AuthorizationStatus = "ABANDONED"
+)
+
+type OrderAuthorization struct {
+	ID            string
+	TaskID        string
+	TaskVersion   int
+	StartKey      string
+	GoodsID       string
+	SKUColor      string
+	SKUSize       string
+	Quantity      int
+	TotalPriceCap string
+	Status        AuthorizationStatus
+	CreatedBy     string
+	CreatedAt     time.Time
+	ExpiresAt     time.Time
+}
+
+// CanTransitionTo 围栏后的授权只能消费，不能回到可领取或可过期状态，以防重复采购。
+func (status AuthorizationStatus) CanTransitionTo(next AuthorizationStatus) bool {
+	_, allowed := authorizationTransitions[status][next]
+	return allowed
+}
+
+// TransitionAuthorization 返回下一状态；未定义的授权状态转移一律失败。
+func TransitionAuthorization(current, next AuthorizationStatus) (AuthorizationStatus, error) {
+	if !current.CanTransitionTo(next) {
+		return current, ErrInvalidAuthorizationTransition
+	}
+
+	return next, nil
+}
+
+var authorizationTransitions = map[AuthorizationStatus]map[AuthorizationStatus]struct{}{
+	AuthorizationStatusActive: {
+		AuthorizationStatusClaimed:   {},
+		AuthorizationStatusExpired:   {},
+		AuthorizationStatusAbandoned: {},
+	},
+	AuthorizationStatusClaimed: {
+		AuthorizationStatusFenced:    {},
+		AuthorizationStatusExpired:   {},
+		AuthorizationStatusAbandoned: {},
+	},
+	AuthorizationStatusFenced: {
+		AuthorizationStatusConsumed: {},
+	},
+}

admin/internal/domain/authorization_test.go

@@ -0,0 +1,52 @@
+package domain_test
+
+import (
+	"errors"
+	"testing"
+
+	"cmbuyer/admin/internal/domain"
+)
+
+func TestAuthorizationTransitions(t *testing.T) {
+	tests := []struct {
+		name    string
+		current domain.AuthorizationStatus
+		next    domain.AuthorizationStatus
+		allowed bool
+	}{
+		{"claim", domain.AuthorizationStatusActive, domain.AuthorizationStatusClaimed, true},
+		{"fence", domain.AuthorizationStatusClaimed, domain.AuthorizationStatusFenced, true},
+		{"consume fenced authorization", domain.AuthorizationStatusFenced, domain.AuthorizationStatusConsumed, true},
+		{"expire active", domain.AuthorizationStatusActive, domain.AuthorizationStatusExpired, true},
+		{"abandon active", domain.AuthorizationStatusActive, domain.AuthorizationStatusAbandoned, true},
+		{"expire claimed before fence", domain.AuthorizationStatusClaimed, domain.AuthorizationStatusExpired, true},
+		{"abandon claimed before fence", domain.AuthorizationStatusClaimed, domain.AuthorizationStatusAbandoned, true},
+		{"fenced authorization cannot expire", domain.AuthorizationStatusFenced, domain.AuthorizationStatusExpired, false},
+		{"fenced authorization cannot be abandoned", domain.AuthorizationStatusFenced, domain.AuthorizationStatusAbandoned, false},
+		{"fenced authorization cannot be claimed again", domain.AuthorizationStatusFenced, domain.AuthorizationStatusClaimed, false},
+		{"consumed authorization cannot restart", domain.AuthorizationStatusConsumed, domain.AuthorizationStatusClaimed, false},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			if got := test.current.CanTransitionTo(test.next); got != test.allowed {
+				t.Fatalf("CanTransitionTo(%s, %s) = %t, want %t", test.current, test.next, got, test.allowed)
+			}
+
+			result, err := domain.TransitionAuthorization(test.current, test.next)
+			if test.allowed {
+				if err != nil {
+					t.Fatalf("TransitionAuthorization(%s, %s): %v", test.current, test.next, err)
+				}
+				if result != test.next {
+					t.Fatalf("TransitionAuthorization(%s, %s) = %s, want %s", test.current, test.next, result, test.next)
+				}
+				return
+			}
+
+			if !errors.Is(err, domain.ErrInvalidAuthorizationTransition) {
+				t.Fatalf("TransitionAuthorization(%s, %s) error = %v, want ErrInvalidAuthorizationTransition", test.current, test.next, err)
+			}
+		})
+	}
+}

admin/internal/domain/purchase_attempt.go

@@ -0,0 +1,74 @@
+package domain
+
+import (
+	"errors"
+	"time"
+)
+
+var ErrInvalidAttemptTransition = errors.New("invalid purchase attempt status transition")
+
+// AttemptStatus 只描述单趟领取的可恢复执行。真实提交结果独立由唯一围栏记录调和。
+type AttemptStatus string
+
+const (
+	AttemptStatusClaimed   AttemptStatus = "CLAIMED"
+	AttemptStatusOrdering  AttemptStatus = "ORDERING"
+	AttemptStatusFailed    AttemptStatus = "FAILED"
+	AttemptStatusFenced    AttemptStatus = "FENCED"
+	AttemptStatusAbandoned AttemptStatus = "ABANDONED"
+)
+
+// AttemptFailureCode 是服务端可审计的固定失败摘要，不能承载页面正文或其他自由文本。
+type AttemptFailureCode string
+
+const (
+	AttemptFailureAuthorizationExpired AttemptFailureCode = "AUTHORIZATION_EXPIRED"
+	AttemptFailureLeaseLost            AttemptFailureCode = "LEASE_LOST"
+	AttemptFailureGate1Rejected        AttemptFailureCode = "GATE_1_REJECTED"
+	AttemptFailureQuantityMismatch     AttemptFailureCode = "QUANTITY_MISMATCH"
+	AttemptFailureGate2Rejected        AttemptFailureCode = "GATE_2_REJECTED"
+	AttemptFailureGate3Rejected        AttemptFailureCode = "GATE_3_REJECTED"
+	AttemptFailureFenceRejected        AttemptFailureCode = "FENCE_REJECTED"
+	AttemptFailureSafeAborted          AttemptFailureCode = "SAFE_ABORTED"
+)
+
+type PurchaseAttempt struct {
+	ID              string
+	TaskID          string
+	AuthorizationID string
+	ClaimGeneration int
+	Status          AttemptStatus
+	Gate1UnitPrice  *string
+	Gate2UnitPrice  *string
+	QuantityRead    *int
+	ConfirmAmount   *string
+	FailureCode     *AttemptFailureCode
+	StartedAt       time.Time
+	FinishedAt      *time.Time
+}
+
+// CanTransitionTo 只允许围栏前的领取恢复为安全失败；围栏后不再提供回退或重试路径。
+func (status AttemptStatus) CanTransitionTo(next AttemptStatus) bool {
+	_, allowed := attemptTransitions[status][next]
+	return allowed
+}
+
+func TransitionAttempt(current, next AttemptStatus) (AttemptStatus, error) {
+	if !current.CanTransitionTo(next) {
+		return current, ErrInvalidAttemptTransition
+	}
+	return next, nil
+}
+
+var attemptTransitions = map[AttemptStatus]map[AttemptStatus]struct{}{
+	AttemptStatusClaimed: {
+		AttemptStatusOrdering:  {},
+		AttemptStatusFailed:    {},
+		AttemptStatusAbandoned: {},
+	},
+	AttemptStatusOrdering: {
+		AttemptStatusFenced:    {},
+		AttemptStatusFailed:    {},
+		AttemptStatusAbandoned: {},
+	},
+}

admin/internal/domain/purchase_attempt_test.go

@@ -0,0 +1,34 @@
+package domain_test
+
+import (
+	"errors"
+	"testing"
+
+	"cmbuyer/admin/internal/domain"
+)
+
+func TestPurchaseAttemptTransitions(t *testing.T) {
+	for _, test := range []struct {
+		current domain.AttemptStatus
+		next    domain.AttemptStatus
+		allowed bool
+	}{
+		{domain.AttemptStatusClaimed, domain.AttemptStatusOrdering, true},
+		{domain.AttemptStatusOrdering, domain.AttemptStatusFenced, true},
+		{domain.AttemptStatusOrdering, domain.AttemptStatusFailed, true},
+		{domain.AttemptStatusFenced, domain.AttemptStatusOrdering, false},
+		{domain.AttemptStatusFenced, domain.AttemptStatusAbandoned, false},
+		{domain.AttemptStatus("UNKNOWN"), domain.AttemptStatusOrdering, false},
+	} {
+		got, err := domain.TransitionAttempt(test.current, test.next)
+		if test.allowed {
+			if err != nil || got != test.next {
+				t.Fatalf("TransitionAttempt(%s, %s) = (%s, %v)", test.current, test.next, got, err)
+			}
+			continue
+		}
+		if !errors.Is(err, domain.ErrInvalidAttemptTransition) || got != test.current {
+			t.Fatalf("invalid TransitionAttempt(%s, %s) = (%s, %v)", test.current, test.next, got, err)
+		}
+	}
+}

admin/internal/domain/submission.go

@@ -0,0 +1,56 @@
+package domain
+
+import (
+	"errors"
+	"time"
+)
+
+var ErrInvalidSubmissionTransition = errors.New("invalid submission status transition")
+
+type SubmissionStatus string
+
+const (
+	SubmissionStatusFenced                 SubmissionStatus = "FENCED"
+	SubmissionStatusSubmitted              SubmissionStatus = "SUBMITTED"
+	SubmissionStatusReconciliationRequired SubmissionStatus = "RECONCILIATION_REQUIRED"
+	SubmissionStatusManualResolved         SubmissionStatus = "MANUAL_RESOLVED"
+)
+
+type OrderSubmission struct {
+	ID              string
+	TaskID          string
+	AuthorizationID string
+	AttemptID       string
+	Status          SubmissionStatus
+	Gate1UnitPrice  string
+	Gate2UnitPrice  string
+	QuantityRead    int
+	ConfirmAmount   string
+	CreatedAt       time.Time
+	ResolvedAt      *time.Time
+}
+
+// CanTransitionTo 只允许围栏记录向最终观察结果调和，拒绝回退以防触发第二次真实动作。
+func (status SubmissionStatus) CanTransitionTo(next SubmissionStatus) bool {
+	_, allowed := submissionTransitions[status][next]
+	return allowed
+}
+
+// TransitionSubmission 返回下一状态；未定义的提交记录状态转移一律失败。
+func TransitionSubmission(current, next SubmissionStatus) (SubmissionStatus, error) {
+	if !current.CanTransitionTo(next) {
+		return current, ErrInvalidSubmissionTransition
+	}
+
+	return next, nil
+}
+
+var submissionTransitions = map[SubmissionStatus]map[SubmissionStatus]struct{}{
+	SubmissionStatusFenced: {
+		SubmissionStatusSubmitted:              {},
+		SubmissionStatusReconciliationRequired: {},
+	},
+	SubmissionStatusReconciliationRequired: {
+		SubmissionStatusManualResolved: {},
+	},
+}

admin/internal/domain/submission_test.go

@@ -0,0 +1,48 @@
+package domain_test
+
+import (
+	"errors"
+	"testing"
+
+	"cmbuyer/admin/internal/domain"
+)
+
+func TestSubmissionTransitions(t *testing.T) {
+	tests := []struct {
+		name    string
+		current domain.SubmissionStatus
+		next    domain.SubmissionStatus
+		allowed bool
+	}{
+		{"submitted", domain.SubmissionStatusFenced, domain.SubmissionStatusSubmitted, true},
+		{"uncertain requires reconciliation", domain.SubmissionStatusFenced, domain.SubmissionStatusReconciliationRequired, true},
+		{"manual review resolves reconciliation", domain.SubmissionStatusReconciliationRequired, domain.SubmissionStatusManualResolved, true},
+		{"cannot reopen fenced submission", domain.SubmissionStatusSubmitted, domain.SubmissionStatusFenced, false},
+		{"submitted cannot require reconciliation", domain.SubmissionStatusSubmitted, domain.SubmissionStatusReconciliationRequired, false},
+		{"cannot skip reconciliation", domain.SubmissionStatusFenced, domain.SubmissionStatusManualResolved, false},
+		{"manual resolution cannot create a second submission", domain.SubmissionStatusManualResolved, domain.SubmissionStatusFenced, false},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			if got := test.current.CanTransitionTo(test.next); got != test.allowed {
+				t.Fatalf("CanTransitionTo(%s, %s) = %t, want %t", test.current, test.next, got, test.allowed)
+			}
+
+			result, err := domain.TransitionSubmission(test.current, test.next)
+			if test.allowed {
+				if err != nil {
+					t.Fatalf("TransitionSubmission(%s, %s): %v", test.current, test.next, err)
+				}
+				if result != test.next {
+					t.Fatalf("TransitionSubmission(%s, %s) = %s, want %s", test.current, test.next, result, test.next)
+				}
+				return
+			}
+
+			if !errors.Is(err, domain.ErrInvalidSubmissionTransition) {
+				t.Fatalf("TransitionSubmission(%s, %s) error = %v, want ErrInvalidSubmissionTransition", test.current, test.next, err)
+			}
+		})
+	}
+}

admin/internal/domain/task.go

@@ -0,0 +1,96 @@
+// Package domain 定义采购服务的业务实体与不依赖外部系统的状态规则。
+package domain
+
+import (
+	"errors"
+	"time"
+)
+
+var ErrInvalidTaskTransition = errors.New("invalid task status transition")
+
+type TaskStatus string
+
+const (
+	TaskStatusDraft                  TaskStatus = "DRAFT"
+	TaskStatusPending                TaskStatus = "PENDING"
+	TaskStatusClaimed                TaskStatus = "CLAIMED"
+	TaskStatusOrdering               TaskStatus = "ORDERING"
+	TaskStatusWaitingPayment         TaskStatus = "WAITING_PAYMENT"
+	TaskStatusReconciliationRequired TaskStatus = "RECONCILIATION_REQUIRED"
+	TaskStatusNeedsManual            TaskStatus = "NEEDS_MANUAL"
+	TaskStatusSucceeded              TaskStatus = "SUCCEEDED"
+	TaskStatusFailed                 TaskStatus = "FAILED"
+	TaskStatusCanceled               TaskStatus = "CANCELED"
+)
+
+type Source string
+
+const (
+	SourceManual Source = "MANUAL"
+	SourceExcel  Source = "EXCEL"
+	SourceERP    Source = "ERP"
+)
+
+type Task struct {
+	ID               string
+	Source           Source
+	SourceRef        *string
+	Title            string
+	GoodsID          string
+	SKUColor         string
+	SKUSize          string
+	Quantity         int
+	MaxTotalPrice    string
+	ReferenceAssetID *string
+	Status           TaskStatus
+	Version          int
+	CreatedAt        time.Time
+	UpdatedAt        time.Time
+}
+
+// CanTransitionTo 只接受架构已定义的任务状态转移，未知状态或未列出的动作均拒绝。
+func (status TaskStatus) CanTransitionTo(next TaskStatus) bool {
+	_, allowed := taskTransitions[status][next]
+	return allowed
+}
+
+// TransitionTask 返回下一状态；非法转移必须在写库前失败，不能由调用方猜测补救路径。
+func TransitionTask(current, next TaskStatus) (TaskStatus, error) {
+	if !current.CanTransitionTo(next) {
+		return current, ErrInvalidTaskTransition
+	}
+
+	return next, nil
+}
+
+var taskTransitions = map[TaskStatus]map[TaskStatus]struct{}{
+	TaskStatusDraft: {
+		TaskStatusPending:  {},
+		TaskStatusCanceled: {},
+	},
+	TaskStatusPending: {
+		TaskStatusClaimed:  {},
+		TaskStatusDraft:    {},
+		TaskStatusCanceled: {},
+	},
+	TaskStatusClaimed: {
+		TaskStatusOrdering: {},
+		TaskStatusDraft:    {},
+	},
+	TaskStatusOrdering: {
+		TaskStatusNeedsManual:            {},
+		TaskStatusWaitingPayment:         {},
+		TaskStatusReconciliationRequired: {},
+	},
+	TaskStatusNeedsManual: {
+		TaskStatusDraft:    {},
+		TaskStatusCanceled: {},
+	},
+	TaskStatusWaitingPayment: {
+		TaskStatusSucceeded: {},
+	},
+	TaskStatusReconciliationRequired: {
+		TaskStatusWaitingPayment: {},
+		TaskStatusFailed:         {},
+	},
+}

admin/internal/domain/task_test.go

@@ -0,0 +1,64 @@
+package domain_test
+
+import (
+	"errors"
+	"testing"
+
+	"cmbuyer/admin/internal/domain"
+)
+
+func TestTaskTransitions(t *testing.T) {
+	tests := []struct {
+		name    string
+		current domain.TaskStatus
+		next    domain.TaskStatus
+		allowed bool
+	}{
+		{"start purchase", domain.TaskStatusDraft, domain.TaskStatusPending, true},
+		{"cancel draft before fence", domain.TaskStatusDraft, domain.TaskStatusCanceled, true},
+		{"claim purchase", domain.TaskStatusPending, domain.TaskStatusClaimed, true},
+		{"release expired authorization", domain.TaskStatusPending, domain.TaskStatusDraft, true},
+		{"start ordering", domain.TaskStatusClaimed, domain.TaskStatusOrdering, true},
+		{"release unstarted claim", domain.TaskStatusClaimed, domain.TaskStatusDraft, true},
+		{"ordering needs manual review", domain.TaskStatusOrdering, domain.TaskStatusNeedsManual, true},
+		{"order reaches payment", domain.TaskStatusOrdering, domain.TaskStatusWaitingPayment, true},
+		{"order needs manual review before fence", domain.TaskStatusOrdering, domain.TaskStatusNeedsManual, true},
+		{"order needs reconciliation", domain.TaskStatusOrdering, domain.TaskStatusReconciliationRequired, true},
+		{"manual review resets draft", domain.TaskStatusNeedsManual, domain.TaskStatusDraft, true},
+		{"manual review cancels before fence", domain.TaskStatusNeedsManual, domain.TaskStatusCanceled, true},
+		{"payment verified", domain.TaskStatusWaitingPayment, domain.TaskStatusSucceeded, true},
+		{"reconcile confirms waiting payment", domain.TaskStatusReconciliationRequired, domain.TaskStatusWaitingPayment, true},
+		{"reconcile confirms failed", domain.TaskStatusReconciliationRequired, domain.TaskStatusFailed, true},
+		{"cannot skip authorization", domain.TaskStatusDraft, domain.TaskStatusOrdering, false},
+		{"ordering cannot return pending", domain.TaskStatusOrdering, domain.TaskStatusPending, false},
+		{"ordering cannot bypass manual review to draft", domain.TaskStatusOrdering, domain.TaskStatusDraft, false},
+		{"terminal task cannot restart", domain.TaskStatusSucceeded, domain.TaskStatusPending, false},
+		{"unknown status is rejected", domain.TaskStatus("UNKNOWN"), domain.TaskStatusPending, false},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			if got := test.current.CanTransitionTo(test.next); got != test.allowed {
+				t.Fatalf("CanTransitionTo(%s, %s) = %t, want %t", test.current, test.next, got, test.allowed)
+			}
+
+			result, err := domain.TransitionTask(test.current, test.next)
+			if test.allowed {
+				if err != nil {
+					t.Fatalf("TransitionTask(%s, %s): %v", test.current, test.next, err)
+				}
+				if result != test.next {
+					t.Fatalf("TransitionTask(%s, %s) = %s, want %s", test.current, test.next, result, test.next)
+				}
+				return
+			}
+
+			if !errors.Is(err, domain.ErrInvalidTaskTransition) {
+				t.Fatalf("TransitionTask(%s, %s) error = %v, want ErrInvalidTaskTransition", test.current, test.next, err)
+			}
+			if result != test.current {
+				t.Fatalf("TransitionTask(%s, %s) result = %s, want unchanged status", test.current, test.next, result)
+			}
+		})
+	}
+}

admin/internal/evidence/evidence.go

@@ -0,0 +1,72 @@
+// Package evidence defines the narrow internal screenshot contract shared by HTTP and storage.
+package evidence
+
+import (
+	"context"
+	"errors"
+	"io"
+	"time"
+
+	"cmbuyer/admin/internal/deviceauth"
+)
+
+const (
+	KindSKUPanelGate1        = "SKU_PANEL_GATE_1"
+	PrivacyInternalRaw       = "INTERNAL_RAW"
+	PNGContentType           = "image/png"
+	MaxFileBytes       int64 = 10 << 20
+	MaxImageSide             = 8192
+	MaxImagePixels           = 16_777_216
+)
+
+var (
+	ErrInvalid  = errors.New("invalid evidence")
+	ErrConflict = errors.New("evidence upload key conflict")
+	ErrNotFound = errors.New("evidence not found")
+	ErrTooLarge = errors.New("evidence file too large")
+)
+
+type UploadMetadata struct {
+	UploadKey   string
+	TaskID      string
+	AttemptID   string
+	Kind        string
+	PrivacyTier string
+	SHA256      string
+	CapturedAt  time.Time
+}
+
+// StagedFile contains only server-generated state. Multipart filenames and client paths never enter this type.
+type StagedFile struct {
+	Path        string
+	SHA256      string
+	ByteSize    int64
+	ContentType string
+	Width       int
+	Height      int
+}
+
+type Asset struct {
+	ID                 string    `json:"asset_id"`
+	TaskID             string    `json:"task_id"`
+	AttemptID          string    `json:"attempt_id"`
+	Kind               string    `json:"kind"`
+	PrivacyTier        string    `json:"privacy_tier"`
+	SHA256             string    `json:"sha256"`
+	ByteSize           int64     `json:"byte_size"`
+	ContentType        string    `json:"content_type"`
+	Width              int       `json:"width_px"`
+	Height             int       `json:"height_px"`
+	CapturedAt         time.Time `json:"captured_at"`
+	UploadedByDeviceID string    `json:"-"`
+	StorageKey         string    `json:"-"`
+	CreatedAt          time.Time `json:"-"`
+}
+
+// Store separates bounded multipart staging from metadata commit so field order cannot weaken validation.
+type Store interface {
+	Stage(io.Reader, string) (StagedFile, error)
+	Discard(StagedFile)
+	Commit(context.Context, deviceauth.Principal, UploadMetadata, StagedFile) (Asset, bool, error)
+	Open(context.Context, string) (Asset, io.ReadSeekCloser, error)
+}

admin/internal/migrations/migrations.go

@@ -0,0 +1,28 @@
+// Package migrations 通过 goose 执行采购服务的版本化数据库迁移。
+package migrations
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/pressly/goose/v3"
+)
+
+// Run 执行指定的 goose 命令。迁移目录由调用方显式传入，避免把运行目录当作隐式配置。
+func Run(ctx context.Context, database *sql.DB, directory, command string) error {
+	if err := goose.SetDialect("sqlite3"); err != nil {
+		return err
+	}
+
+	return goose.RunContext(ctx, command, database, directory)
+}
+
+// Up 将数据库迁移到当前版本。
+func Up(ctx context.Context, database *sql.DB, directory string) error {
+	return Run(ctx, database, directory, "up")
+}
+
+// Down 回退一个已应用的迁移版本。
+func Down(ctx context.Context, database *sql.DB, directory string) error {
+	return Run(ctx, database, directory, "down")
+}

admin/internal/migrations/migrations_test.go

@@ -0,0 +1,548 @@
+package migrations_test
+
+import (
+	"context"
+	"database/sql"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strconv"
+	"strings"
+	"testing"
+
+	"cmbuyer/admin/internal/migrations"
+	"cmbuyer/admin/internal/storage/sqlite"
+
+	"github.com/pressly/goose/v3"
+)
+
+const migrationTime = "2026-08-04T00:00:00Z"
+
+func TestUpDownAndIdempotence(t *testing.T) {
+	database := openTestDatabase(t)
+	directory := migrationDirectory(t)
+	context := context.Background()
+
+	if err := migrations.Up(context, database, directory); err != nil {
+		t.Fatalf("apply migrations: %v", err)
+	}
+	assertVersion(t, database, 4)
+	assertTableExists(t, database, "tasks", true)
+	assertTableExists(t, database, "spec_trials", false)
+	assertTableExists(t, database, "order_authorizations", true)
+	assertTableExists(t, database, "purchase_attempts", true)
+	assertTableExists(t, database, "order_submissions", true)
+	assertTableExists(t, database, "evidence_assets", true)
+	assertTableExists(t, database, "device_credentials", true)
+	assertTableExists(t, database, "single_pass_upgrade_guard", false)
+
+	if err := migrations.Up(context, database, directory); err != nil {
+		t.Fatalf("reapply migrations: %v", err)
+	}
+	assertVersion(t, database, 4)
+
+	if err := migrations.Down(context, database, directory); err != nil {
+		t.Fatalf("roll back device credential migration: %v", err)
+	}
+	assertVersion(t, database, 3)
+	assertTableExists(t, database, "device_credentials", false)
+	assertTableExists(t, database, "evidence_assets", true)
+
+	if err := migrations.Down(context, database, directory); err != nil {
+		t.Fatalf("roll back evidence migration: %v", err)
+	}
+	assertVersion(t, database, 2)
+	assertTableExists(t, database, "evidence_assets", false)
+
+	if err := migrations.Down(context, database, directory); err != nil {
+		t.Fatalf("roll back v2 migration: %v", err)
+	}
+	assertVersion(t, database, 1)
+	assertTableExists(t, database, "spec_trials", true)
+	assertTableExists(t, database, "purchase_attempts", false)
+	assertTableExists(t, database, "single_pass_downgrade_guard", false)
+
+	if err := migrations.Up(context, database, directory); err != nil {
+		t.Fatalf("reapply v2 after rollback: %v", err)
+	}
+	assertVersion(t, database, 4)
+}
+
+func TestUpgradePreservesManualDraftLosslessly(t *testing.T) {
+	database := openTestDatabase(t)
+	migrateToV1(t, database)
+	if _, err := database.Exec(`
+		INSERT INTO tasks (
+			id, source, source_ref, title, goods_id, sku_color, sku_size, quantity, max_total_price,
+			reference_asset_id, status, version, created_at, updated_at
+		) VALUES ('draft-one', 'MANUAL', 'source-ref', 'title', 'goods', 'white', 'XL', 2, '80.50',
+			'asset-id', 'DRAFT', 7, '2026-08-03T00:00:00Z', '2026-08-03T01:00:00Z')
+	`); err != nil {
+		t.Fatalf("insert v1 draft: %v", err)
+	}
+
+	if err := migrations.Up(context.Background(), database, migrationDirectory(t)); err != nil {
+		t.Fatalf("upgrade v1 draft: %v", err)
+	}
+	assertVersion(t, database, 4)
+	var got struct {
+		id, source, sourceRef, title, goodsID, color, size, maxPrice, assetID, status, created, updated string
+		quantity, version                                                                               int
+	}
+	if err := database.QueryRow(`SELECT id, source, source_ref, title, goods_id, sku_color, sku_size, quantity, max_total_price, reference_asset_id, status, version, created_at, updated_at FROM tasks WHERE id = 'draft-one'`).Scan(
+		&got.id, &got.source, &got.sourceRef, &got.title, &got.goodsID, &got.color, &got.size, &got.quantity, &got.maxPrice, &got.assetID, &got.status, &got.version, &got.created, &got.updated,
+	); err != nil {
+		t.Fatalf("read upgraded draft: %v", err)
+	}
+	if got != (struct {
+		id, source, sourceRef, title, goodsID, color, size, maxPrice, assetID, status, created, updated string
+		quantity, version                                                                               int
+	}{"draft-one", "MANUAL", "source-ref", "title", "goods", "white", "XL", "80.50", "asset-id", "DRAFT", "2026-08-03T00:00:00Z", "2026-08-03T01:00:00Z", 2, 7}) {
+		t.Fatalf("upgraded draft changed: %#v", got)
+	}
+}
+
+func TestUpgradeRejectsLegacyExecutionDataAtomically(t *testing.T) {
+	tests := []struct {
+		name  string
+		setup func(*testing.T, *sql.DB)
+	}{
+		{"non-draft task", func(t *testing.T, database *sql.DB) {
+			insertV1Task(t, database, "pending", "MANUAL", "PENDING", "1.00")
+		}},
+		{"non-manual task", func(t *testing.T, database *sql.DB) { insertV1Task(t, database, "excel", "EXCEL", "DRAFT", "1.00") }},
+		{"invalid v2 money", func(t *testing.T, database *sql.DB) { insertV1Task(t, database, "zero", "MANUAL", "DRAFT", "0.00") }},
+		{"third decimal place", func(t *testing.T, database *sql.DB) {
+			insertV1Task(t, database, "third-decimal", "MANUAL", "DRAFT", "1.234")
+		}},
+		{"spec trial", func(t *testing.T, database *sql.DB) {
+			insertV1Task(t, database, "task", "MANUAL", "DRAFT", "1.00")
+			insertV1SpecTrial(t, database, "trial", "task")
+		}},
+		{"authorization", func(t *testing.T, database *sql.DB) {
+			insertV1Task(t, database, "task", "MANUAL", "DRAFT", "1.00")
+			insertV1SpecTrial(t, database, "trial", "task")
+			insertV1Authorization(t, database, "auth", "task", "trial")
+		}},
+		{"submission", func(t *testing.T, database *sql.DB) {
+			insertV1Task(t, database, "task", "MANUAL", "DRAFT", "1.00")
+			insertV1SpecTrial(t, database, "trial", "task")
+			insertV1Authorization(t, database, "auth", "task", "trial")
+			if _, err := database.Exec(`INSERT INTO order_submissions (id, task_id, authorization_id, command_id, dry_run_id, status, verified_unit_price, quantity_read, confirm_page_amount, created_at) VALUES ('submission', 'task', 'auth', 'command', 'dry-run', 'FENCED', '1.00', 1, '1.00', ? )`, migrationTime); err != nil {
+				t.Fatalf("insert v1 submission: %v", err)
+			}
+		}},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			database := openTestDatabase(t)
+			migrateToV1(t, database)
+			test.setup(t, database)
+			before := v1RowCount(t, database)
+			if err := migrations.Up(context.Background(), database, migrationDirectory(t)); err == nil {
+				t.Fatal("unsafe legacy data upgraded successfully")
+			}
+			assertVersion(t, database, 1)
+			assertTableExists(t, database, "spec_trials", true)
+			assertTableExists(t, database, "purchase_attempts", false)
+			assertTableExists(t, database, "single_pass_upgrade_guard", false)
+			if after := v1RowCount(t, database); after != before {
+				t.Fatalf("v1 data changed after rejection: before=%d after=%d", before, after)
+			}
+		})
+	}
+}
+
+func TestV2SchemaConstraintsAndRelationships(t *testing.T) {
+	database := openTestDatabase(t)
+	if err := migrations.Up(context.Background(), database, migrationDirectory(t)); err != nil {
+		t.Fatalf("apply migrations: %v", err)
+	}
+	for _, column := range []struct{ table, name string }{
+		{"tasks", "max_total_price"},
+		{"order_authorizations", "total_price_cap"},
+		{"purchase_attempts", "gate1_unit_price"},
+		{"purchase_attempts", "gate2_unit_price"},
+		{"purchase_attempts", "confirm_amount"},
+		{"order_submissions", "gate1_unit_price"},
+		{"order_submissions", "gate2_unit_price"},
+		{"order_submissions", "confirm_amount"},
+	} {
+		assertColumnType(t, database, column.table, column.name, "TEXT")
+	}
+	for _, legacy := range []string{"spec_trials", "authorized_unit_price", "spec_trial_id", "command_id", "dry_run_id"} {
+		var count int
+		if err := database.QueryRow(`SELECT COUNT(*) FROM sqlite_master WHERE sql LIKE '%' || ? || '%'`, legacy).Scan(&count); err != nil {
+			t.Fatalf("search schema for %s: %v", legacy, err)
+		}
+		if count != 0 {
+			t.Fatalf("legacy identifier %q remains in v2 schema", legacy)
+		}
+	}
+
+	insertV2Task(t, database, "task-one", "MANUAL", "DRAFT")
+	insertV2Task(t, database, "task-two", "MANUAL", "DRAFT")
+	for index, value := range []string{"", "0", "0.00", "-1.00", "1e2", "1.", "1.234", " 1.00", "one"} {
+		if _, err := database.Exec(`INSERT INTO tasks (id, source, title, goods_id, sku_color, sku_size, quantity, max_total_price, status, created_at, updated_at) VALUES (?, 'MANUAL', 'title', 'goods', 'white', 'XL', 1, ?, 'DRAFT', ?, ?)`, "bad-price-"+strconv.Itoa(index), value, migrationTime, migrationTime); err == nil {
+			t.Fatalf("invalid total price %q succeeded", value)
+		}
+	}
+	if _, err := database.Exec(`INSERT INTO tasks (id, source, title, goods_id, sku_color, sku_size, quantity, max_total_price, status, created_at, updated_at) VALUES ('bad-status', 'MANUAL', 'title', 'goods', 'white', 'XL', 1, '1.00', 'UNKNOWN', ?, ?)`, migrationTime, migrationTime); err == nil {
+		t.Fatal("unknown task status succeeded")
+	}
+	insertV2Authorization(t, database, "auth-one", "task-one", 1, "start-one")
+	insertV2Authorization(t, database, "auth-two", "task-two", 1, "start-two")
+	if _, err := database.Exec(`INSERT INTO order_authorizations (id, task_id, task_version, start_key, goods_id, sku_color, sku_size, quantity, total_price_cap, status, created_by, created_at, expires_at) VALUES ('bad-auth-price', 'task-one', 2, 'bad-price', 'goods', 'white', 'XL', 1, '1.234', 'ACTIVE', 'admin', ?, ?)`, migrationTime, migrationTime); err == nil {
+		t.Fatal("third decimal authorization cap succeeded")
+	}
+	if _, err := database.Exec(`INSERT INTO order_authorizations (id, task_id, task_version, start_key, goods_id, sku_color, sku_size, quantity, total_price_cap, status, created_by, created_at, expires_at) VALUES ('bad-auth-status', 'task-one', 2, 'bad-status', 'goods', 'white', 'XL', 1, '1.00', 'UNKNOWN', 'admin', ?, ?)`, migrationTime, migrationTime); err == nil {
+		t.Fatal("unknown authorization status succeeded")
+	}
+	insertV2Authorization(t, database, "auth-one-b", "task-one", 2, "start-one-b")
+	if _, err := database.Exec(`INSERT INTO order_authorizations (id, task_id, task_version, start_key, goods_id, sku_color, sku_size, quantity, total_price_cap, status, created_by, created_at, expires_at) VALUES ('duplicate-version', 'task-one', 1, 'different-start', 'goods', 'white', 'XL', 1, '1.00', 'ACTIVE', 'admin', ?, ?)`, migrationTime, migrationTime); err == nil {
+		t.Fatal("duplicate task version authorization succeeded")
+	}
+	if _, err := database.Exec(`INSERT INTO purchase_attempts (id, task_id, authorization_id, claim_generation, status, started_at) VALUES ('cross-attempt', 'task-one', 'auth-two', 1, 'CLAIMED', ?)`, migrationTime); err == nil {
+		t.Fatal("attempt using another task authorization succeeded")
+	}
+	insertV2Attempt(t, database, "attempt-one", "task-one", "auth-one", 1)
+	if _, err := database.Exec(`INSERT INTO purchase_attempts (id, task_id, authorization_id, claim_generation, status, gate1_unit_price, started_at) VALUES ('bad-attempt-price', 'task-one', 'auth-one', 2, 'ORDERING', '1.234', ?)`, migrationTime); err == nil {
+		t.Fatal("third decimal gate price succeeded")
+	}
+	if _, err := database.Exec(`INSERT INTO purchase_attempts (id, task_id, authorization_id, claim_generation, status, started_at) VALUES ('bad-attempt-status', 'task-one', 'auth-one', 2, 'UNKNOWN', ?)`, migrationTime); err == nil {
+		t.Fatal("unknown attempt status succeeded")
+	}
+	if _, err := database.Exec(`INSERT INTO purchase_attempts (id, task_id, authorization_id, claim_generation, status, failure_code, started_at) VALUES ('bad-code', 'task-one', 'auth-one', 2, 'FAILED', 'FREE_TEXT', ?)`, migrationTime); err == nil {
+		t.Fatal("unknown failure code succeeded")
+	}
+	if _, err := database.Exec(`INSERT INTO order_submissions (id, task_id, authorization_id, attempt_id, status, gate1_unit_price, gate2_unit_price, quantity_read, confirm_amount, created_at) VALUES ('cross-submission', 'task-one', 'auth-two', 'attempt-one', 'FENCED', '1.00', '1.00', 1, '1.00', ?)`, migrationTime); err == nil {
+		t.Fatal("submission using another task authorization succeeded")
+	}
+	if _, err := database.Exec(`INSERT INTO order_submissions (id, task_id, authorization_id, attempt_id, status, gate1_unit_price, gate2_unit_price, quantity_read, confirm_amount, created_at) VALUES ('cross-authorization-submission', 'task-one', 'auth-one-b', 'attempt-one', 'FENCED', '1.00', '1.00', 1, '1.00', ?)`, migrationTime); err == nil {
+		t.Fatal("submission combining another same-task authorization and attempt succeeded")
+	}
+	if _, err := database.Exec(`INSERT INTO order_submissions (id, task_id, authorization_id, attempt_id, status, gate1_unit_price, gate2_unit_price, quantity_read, confirm_amount, created_at) VALUES ('bad-submission-status', 'task-one', 'auth-one', 'attempt-one', 'UNKNOWN', '1.00', '1.00', 1, '1.00', ?)`, migrationTime); err == nil {
+		t.Fatal("unknown submission status succeeded")
+	}
+	if _, err := database.Exec(`INSERT INTO order_submissions (id, task_id, authorization_id, attempt_id, status, gate1_unit_price, gate2_unit_price, quantity_read, confirm_amount, created_at) VALUES ('bad-submission-price', 'task-one', 'auth-one', 'attempt-one', 'FENCED', '1.234', '1.00', 1, '1.00', ?)`, migrationTime); err == nil {
+		t.Fatal("third decimal submission price succeeded")
+	}
+	insertV2Submission(t, database, "submission-one", "task-one", "auth-one", "attempt-one")
+	if _, err := database.Exec(`INSERT INTO order_submissions (id, task_id, authorization_id, attempt_id, status, gate1_unit_price, gate2_unit_price, quantity_read, confirm_amount, created_at) VALUES ('duplicate-auth', 'task-one', 'auth-one', 'attempt-one', 'FENCED', '1.00', '1.00', 1, '1.00', ?)`, migrationTime); err == nil {
+		t.Fatal("second submission for fenced authorization succeeded")
+	}
+}
+
+func TestEvidenceSchemaConstraintsAndDowngradeGuard(t *testing.T) {
+	database := openTestDatabase(t)
+	if err := migrations.Up(context.Background(), database, migrationDirectory(t)); err != nil {
+		t.Fatalf("apply migrations: %v", err)
+	}
+	insertV2Task(t, database, "task-one", "MANUAL", "DRAFT")
+	insertV2Authorization(t, database, "auth-one", "task-one", 1, "start-one")
+	insertV2Attempt(t, database, "attempt-one", "task-one", "auth-one", 1)
+	insertV2Task(t, database, "task-two", "MANUAL", "DRAFT")
+	insertV2Authorization(t, database, "auth-two", "task-two", 1, "start-two")
+	insertV2Attempt(t, database, "attempt-two", "task-two", "auth-two", 1)
+	hash := strings.Repeat("a", 64)
+	insert := `INSERT INTO evidence_assets (id, upload_key, task_id, attempt_id, kind, privacy_tier, sha256, byte_size, content_type, width_px, height_px, storage_key, uploaded_by_device_id, captured_at, created_at) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`
+	validArgs := []any{"asset-one", "upload-one", "task-one", "attempt-one", "SKU_PANEL_GATE_1", "INTERNAL_RAW", hash, 100, "image/png", 100, 100, "aa/" + hash + ".png", "device-one", migrationTime, migrationTime}
+	if _, err := database.Exec(insert, validArgs...); err != nil {
+		t.Fatalf("insert valid evidence: %v", err)
+	}
+	for name, mutate := range map[string]func([]any){
+		"attempt from another task": func(values []any) { values[0], values[1], values[3] = "bad-task", "upload-bad-task", "attempt-two" },
+		"unapproved kind":           func(values []any) { values[0], values[1], values[4] = "bad-kind", "upload-bad-kind", "ORDER_CONFIRM" },
+		"wrong privacy":             func(values []any) { values[0], values[1], values[5] = "bad-privacy", "upload-bad-privacy", "PUBLIC" },
+		"uppercase hash": func(values []any) {
+			values[0], values[1], values[6], values[11] = "bad-hash", "upload-bad-hash", strings.Repeat("A", 64), "AA/"+strings.Repeat("A", 64)+".png"
+		},
+		"too many pixels": func(values []any) {
+			values[0], values[1], values[9], values[10] = "bad-pixels", "upload-bad-pixels", 8192, 8192
+		},
+		"client path": func(values []any) { values[0], values[1], values[11] = "bad-path", "upload-bad-path", `..\secret.png` },
+	} {
+		t.Run(name, func(t *testing.T) {
+			values := append([]any(nil), validArgs...)
+			mutate(values)
+			if _, err := database.Exec(insert, values...); err == nil {
+				t.Fatal("invalid evidence row succeeded")
+			}
+		})
+	}
+
+	if err := migrations.Down(context.Background(), database, migrationDirectory(t)); err != nil {
+		t.Fatalf("roll back empty device credential migration: %v", err)
+	}
+	if err := migrations.Down(context.Background(), database, migrationDirectory(t)); err == nil {
+		t.Fatal("evidence-bearing schema downgraded successfully")
+	}
+	assertVersion(t, database, 3)
+	assertTableExists(t, database, "evidence_assets", true)
+	var count int
+	if err := database.QueryRow("SELECT COUNT(*) FROM evidence_assets").Scan(&count); err != nil || count != 1 {
+		t.Fatalf("evidence after rejected downgrade = %d, err=%v", count, err)
+	}
+}
+
+func TestDeviceCredentialSchemaConstraintsAndDowngradeGuard(t *testing.T) {
+	database := openTestDatabase(t)
+	if err := migrations.Up(context.Background(), database, migrationDirectory(t)); err != nil {
+		t.Fatalf("apply migrations: %v", err)
+	}
+	deviceID := "13c9f507-7473-4fa6-8d71-8786c34c6301"
+	hash := make([]byte, 32)
+	for index := range hash {
+		hash[index] = byte(index + 1)
+	}
+	insert := `INSERT INTO device_credentials (device_id, display_name, token_sha256, status, created_at, revoked_at) VALUES (?, ?, ?, ?, ?, ?)`
+	valid := []any{deviceID, "采购工具一号", hash, "ACTIVE", migrationTime, nil}
+	if _, err := database.Exec(insert, valid...); err != nil {
+		t.Fatalf("insert valid credential: %v", err)
+	}
+	for name, mutate := range map[string]func([]any){
+		"uppercase uuid": func(values []any) { values[0], values[2] = strings.ToUpper(deviceID), append([]byte(nil), hash...) },
+		"wrong uuid version": func(values []any) {
+			values[0], values[2] = "23c9f507-7473-3fa6-8d71-8786c34c6301", append([]byte(nil), hash...)
+		},
+		"blank display name": func(values []any) {
+			values[0], values[1], values[2] = "33c9f507-7473-4fa6-8d71-8786c34c6301", "", append([]byte(nil), hash...)
+		},
+		"padded display name": func(values []any) {
+			values[0], values[1], values[2] = "43c9f507-7473-4fa6-8d71-8786c34c6301", " padded", append([]byte(nil), hash...)
+		},
+		"text hash": func(values []any) {
+			values[0], values[2] = "53c9f507-7473-4fa6-8d71-8786c34c6301", strings.Repeat("a", 32)
+		},
+		"short blob hash": func(values []any) { values[0], values[2] = "63c9f507-7473-4fa6-8d71-8786c34c6301", make([]byte, 31) },
+		"unknown status": func(values []any) {
+			values[0], values[2], values[3] = "73c9f507-7473-4fa6-8d71-8786c34c6301", append([]byte(nil), hash...), "UNKNOWN"
+		},
+		"active with revoke time": func(values []any) {
+			values[0], values[2], values[5] = "83c9f507-7473-4fa6-8d71-8786c34c6301", append([]byte(nil), hash...), migrationTime
+		},
+		"revoked without time": func(values []any) {
+			values[0], values[2], values[3] = "93c9f507-7473-4fa6-8d71-8786c34c6301", append([]byte(nil), hash...), "REVOKED"
+		},
+		"revoke before creation": func(values []any) {
+			values[0], values[2], values[3], values[4], values[5] = "b3c9f507-7473-4fa6-8d71-8786c34c6301", append([]byte(nil), hash...), "REVOKED", "2026-08-04T01:00:00Z", "2026-08-04T00:00:00Z"
+		},
+		"non UTC created time": func(values []any) {
+			values[0], values[2], values[4] = "a3c9f507-7473-4fa6-8d71-8786c34c6301", append([]byte(nil), hash...), "2026-08-04T08:00:00+08:00"
+		},
+	} {
+		t.Run(name, func(t *testing.T) {
+			values := append([]any(nil), valid...)
+			mutate(values)
+			if bytesValue, ok := values[2].([]byte); ok && len(bytesValue) == 32 {
+				bytesValue[0]++
+			}
+			if _, err := database.Exec(insert, values...); err == nil {
+				t.Fatal("invalid device credential row succeeded")
+			}
+		})
+	}
+
+	if err := migrations.Down(context.Background(), database, migrationDirectory(t)); err == nil {
+		t.Fatal("credential-bearing schema downgraded successfully")
+	}
+	assertVersion(t, database, 4)
+	assertTableExists(t, database, "device_credentials", true)
+	var count int
+	if err := database.QueryRow(`SELECT COUNT(*) FROM device_credentials`).Scan(&count); err != nil || count != 1 {
+		t.Fatalf("credentials after rejected downgrade = %d, err=%v", count, err)
+	}
+}
+
+func TestDowngradeRejectsV2BusinessDataAtomically(t *testing.T) {
+	tests := []struct {
+		name  string
+		setup func(*testing.T, *sql.DB)
+	}{
+		{"authorization", func(t *testing.T, database *sql.DB) {
+			insertV2Task(t, database, "task", "MANUAL", "DRAFT")
+			insertV2Authorization(t, database, "auth", "task", 1, "start")
+		}},
+		{"attempt", func(t *testing.T, database *sql.DB) {
+			insertV2Task(t, database, "task", "MANUAL", "DRAFT")
+			insertV2Authorization(t, database, "auth", "task", 1, "start")
+			insertV2Attempt(t, database, "attempt", "task", "auth", 1)
+		}},
+		{"submission", func(t *testing.T, database *sql.DB) {
+			insertV2Task(t, database, "task", "MANUAL", "DRAFT")
+			insertV2Authorization(t, database, "auth", "task", 1, "start")
+			insertV2Attempt(t, database, "attempt", "task", "auth", 1)
+			insertV2Submission(t, database, "submission", "task", "auth", "attempt")
+		}},
+		{"non-draft task", func(t *testing.T, database *sql.DB) { insertV2Task(t, database, "pending", "MANUAL", "PENDING") }},
+		{"non-manual task", func(t *testing.T, database *sql.DB) { insertV2Task(t, database, "excel", "EXCEL", "DRAFT") }},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			database := openTestDatabase(t)
+			migrateToV2(t, database)
+			test.setup(t, database)
+			before := v2RowCount(t, database)
+			if err := migrations.Down(context.Background(), database, migrationDirectory(t)); err == nil {
+				t.Fatal("unsafe v2 data downgraded successfully")
+			}
+			assertVersion(t, database, 2)
+			assertTableExists(t, database, "purchase_attempts", true)
+			assertTableExists(t, database, "spec_trials", false)
+			assertTableExists(t, database, "single_pass_downgrade_guard", false)
+			if after := v2RowCount(t, database); after != before {
+				t.Fatalf("v2 data changed after rejected downgrade: before=%d after=%d", before, after)
+			}
+		})
+	}
+}
+
+func migrateToV1(t *testing.T, database *sql.DB) {
+	t.Helper()
+	if err := migrations.Run(context.Background(), database, migrationDirectory(t), "up-by-one"); err != nil {
+		t.Fatalf("apply v1: %v", err)
+	}
+	assertVersion(t, database, 1)
+}
+
+func migrateToV2(t *testing.T, database *sql.DB) {
+	t.Helper()
+	if err := migrations.Run(context.Background(), database, migrationDirectory(t), "up-by-one"); err != nil {
+		t.Fatalf("apply v1: %v", err)
+	}
+	if err := migrations.Run(context.Background(), database, migrationDirectory(t), "up-by-one"); err != nil {
+		t.Fatalf("apply v2: %v", err)
+	}
+	assertVersion(t, database, 2)
+}
+
+func insertV1Task(t *testing.T, database *sql.DB, id, source, status, price string) {
+	t.Helper()
+	if _, err := database.Exec(`INSERT INTO tasks (id, source, title, goods_id, sku_color, sku_size, quantity, max_total_price, status, created_at, updated_at) VALUES (?, ?, 'title', 'goods', 'white', 'XL', 1, ?, ?, ?, ?)`, id, source, price, status, migrationTime, migrationTime); err != nil {
+		t.Fatalf("insert v1 task: %v", err)
+	}
+}
+
+func insertV1SpecTrial(t *testing.T, database *sql.DB, id, taskID string) {
+	t.Helper()
+	if _, err := database.Exec(`INSERT INTO spec_trials (id, task_id, attempt, product_title, selected_color, selected_size, unit_price, total_price, evidence_sha256, created_at) VALUES (?, ?, 1, 'title', 'white', 'XL', '1.00', '1.00', 'hash', ?)`, id, taskID, migrationTime); err != nil {
+		t.Fatalf("insert v1 spec trial: %v", err)
+	}
+}
+
+func insertV1Authorization(t *testing.T, database *sql.DB, id, taskID, trialID string) {
+	t.Helper()
+	if _, err := database.Exec(`INSERT INTO order_authorizations (id, task_id, spec_trial_id, version, goods_id, sku_color, sku_size, quantity, authorized_unit_price, total_price_cap, status, created_by, created_at, expires_at) VALUES (?, ?, ?, 1, 'goods', 'white', 'XL', 1, '1.00', '1.00', 'PENDING_DELIVERY', 'admin', ?, ?)`, id, taskID, trialID, migrationTime, migrationTime); err != nil {
+		t.Fatalf("insert v1 authorization: %v", err)
+	}
+}
+
+func insertV2Task(t *testing.T, database *sql.DB, id, source, status string) {
+	t.Helper()
+	if _, err := database.Exec(`INSERT INTO tasks (id, source, title, goods_id, sku_color, sku_size, quantity, max_total_price, status, created_at, updated_at) VALUES (?, ?, 'title', 'goods', 'white', 'XL', 1, '1.00', ?, ?, ?)`, id, source, status, migrationTime, migrationTime); err != nil {
+		t.Fatalf("insert v2 task: %v", err)
+	}
+}
+
+func insertV2Authorization(t *testing.T, database *sql.DB, id, taskID string, version int, startKey string) {
+	t.Helper()
+	if _, err := database.Exec(`INSERT INTO order_authorizations (id, task_id, task_version, start_key, goods_id, sku_color, sku_size, quantity, total_price_cap, status, created_by, created_at, expires_at) VALUES (?, ?, ?, ?, 'goods', 'white', 'XL', 1, '1.00', 'ACTIVE', 'admin', ?, ?)`, id, taskID, version, startKey, migrationTime, migrationTime); err != nil {
+		t.Fatalf("insert v2 authorization: %v", err)
+	}
+}
+
+func insertV2Attempt(t *testing.T, database *sql.DB, id, taskID, authorizationID string, generation int) {
+	t.Helper()
+	if _, err := database.Exec(`INSERT INTO purchase_attempts (id, task_id, authorization_id, claim_generation, status, started_at) VALUES (?, ?, ?, ?, 'CLAIMED', ?)`, id, taskID, authorizationID, generation, migrationTime); err != nil {
+		t.Fatalf("insert v2 attempt: %v", err)
+	}
+}
+
+func insertV2Submission(t *testing.T, database *sql.DB, id, taskID, authorizationID, attemptID string) {
+	t.Helper()
+	if _, err := database.Exec(`INSERT INTO order_submissions (id, task_id, authorization_id, attempt_id, status, gate1_unit_price, gate2_unit_price, quantity_read, confirm_amount, created_at) VALUES (?, ?, ?, ?, 'FENCED', '1.00', '1.00', 1, '1.00', ?)`, id, taskID, authorizationID, attemptID, migrationTime); err != nil {
+		t.Fatalf("insert v2 submission: %v", err)
+	}
+}
+
+func v1RowCount(t *testing.T, database *sql.DB) int {
+	t.Helper()
+	var count int
+	if err := database.QueryRow(`SELECT (SELECT COUNT(*) FROM tasks) + (SELECT COUNT(*) FROM spec_trials) + (SELECT COUNT(*) FROM order_authorizations) + (SELECT COUNT(*) FROM order_submissions)`).Scan(&count); err != nil {
+		t.Fatalf("count v1 rows: %v", err)
+	}
+	return count
+}
+
+func v2RowCount(t *testing.T, database *sql.DB) int {
+	t.Helper()
+	var count int
+	if err := database.QueryRow(`SELECT (SELECT COUNT(*) FROM tasks) + (SELECT COUNT(*) FROM order_authorizations) + (SELECT COUNT(*) FROM purchase_attempts) + (SELECT COUNT(*) FROM order_submissions)`).Scan(&count); err != nil {
+		t.Fatalf("count v2 rows: %v", err)
+	}
+	return count
+}
+
+func openTestDatabase(t *testing.T) *sql.DB {
+	t.Helper()
+	database, err := sqlite.Open(filepath.Join(t.TempDir(), "migrations.db"))
+	if err != nil {
+		t.Fatalf("open test database: %v", err)
+	}
+	t.Cleanup(func() { _ = database.Close() })
+	return database
+}
+
+func migrationDirectory(t *testing.T) string {
+	t.Helper()
+	_, file, _, ok := runtime.Caller(0)
+	if !ok {
+		t.Fatal("locate migration test source")
+	}
+	return filepath.Join(filepath.Dir(file), "..", "..", "migrations")
+}
+
+func assertVersion(t *testing.T, database *sql.DB, want int64) {
+	t.Helper()
+	got, err := goose.GetDBVersion(database)
+	if err != nil {
+		t.Fatalf("read migration version: %v", err)
+	}
+	if got != want {
+		t.Fatalf("migration version = %d, want %d", got, want)
+	}
+}
+
+func assertTableExists(t *testing.T, database *sql.DB, table string, want bool) {
+	t.Helper()
+	var count int
+	if err := database.QueryRow(`SELECT COUNT(*) FROM sqlite_master WHERE type = 'table' AND name = ?`, table).Scan(&count); err != nil {
+		t.Fatalf("look up table %s: %v", table, err)
+	}
+	if got := count == 1; got != want {
+		t.Fatalf("table %s exists = %t, want %t", table, got, want)
+	}
+}
+
+func assertColumnType(t *testing.T, database *sql.DB, table, column, want string) {
+	t.Helper()
+	var got string
+	if err := database.QueryRow(`SELECT type FROM pragma_table_info(?) WHERE name = ?`, table, column).Scan(&got); err != nil {
+		t.Fatalf("read %s.%s type: %v", table, column, err)
+	}
+	if got != want {
+		t.Fatalf("%s.%s type = %s, want %s", table, column, got, want)
+	}
+}
+
+func TestMigrationsDoNotDisableForeignKeys(t *testing.T) {
+	for _, name := range []string{"00002_single_pass_model.sql", "00003_evidence_assets.sql", "00004_device_credentials.sql"} {
+		contents, err := os.ReadFile(filepath.Join(migrationDirectory(t), name))
+		if err != nil {
+			t.Fatalf("read %s: %v", name, err)
+		}
+		if strings.Contains(strings.ToUpper(string(contents)), "PRAGMA FOREIGN_KEYS = OFF") {
+			t.Fatalf("%s disables foreign keys", name)
+		}
+	}
+}

admin/internal/server/evidence.go

@@ -0,0 +1,205 @@
+package server
+
+import (
+	"errors"
+	"io"
+	"mime"
+	"mime/multipart"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+	"cmbuyer/admin/internal/deviceauth"
+	"cmbuyer/admin/internal/evidence"
+
+	"github.com/gin-gonic/gin"
+)
+
+const (
+	maxEvidenceRequestBytes = evidence.MaxFileBytes + 64<<10
+	maxEvidenceFieldBytes   = 4 << 10
+)
+
+var evidenceFieldNames = map[string]struct{}{
+	"upload_key": {}, "attempt_id": {}, "kind": {}, "privacy_tier": {}, "sha256": {}, "captured_at": {},
+}
+
+func uploadEvidence(options Options) gin.HandlerFunc {
+	return func(context *gin.Context) {
+		// Authentication deliberately precedes content-type parsing and every body read. A rejected
+		// device must not make the service spool or inspect a potentially sensitive upload.
+		principal, err := options.DeviceAuthenticator.Authenticate(context.Request)
+		if errors.Is(err, deviceauth.ErrUnauthenticated) {
+			context.Header("WWW-Authenticate", "Bearer")
+			context.Status(http.StatusUnauthorized)
+			return
+		}
+		if err != nil {
+			context.Status(http.StatusServiceUnavailable)
+			return
+		}
+		if !deviceauth.ValidDeviceID(principal.ID) {
+			// A custom authenticator is still an untrusted boundary. Do not defer principal
+			// validation until Commit because multipart bytes would already have been read.
+			context.Status(http.StatusServiceUnavailable)
+			return
+		}
+
+		boundary, ok := multipartBoundary(context.GetHeader("Content-Type"))
+		if !ok {
+			context.Status(http.StatusUnsupportedMediaType)
+			return
+		}
+		context.Request.Body = http.MaxBytesReader(context.Writer, context.Request.Body, maxEvidenceRequestBytes)
+		reader := multipart.NewReader(context.Request.Body, boundary)
+		fields := make(map[string]string, len(evidenceFieldNames))
+		var staged evidence.StagedFile
+		hasFile := false
+		discard := func() {
+			if hasFile {
+				options.Evidence.Discard(staged)
+			}
+		}
+
+		for {
+			part, err := reader.NextPart()
+			if errors.Is(err, io.EOF) {
+				break
+			}
+			if err != nil {
+				discard()
+				writeMultipartError(context, err)
+				return
+			}
+			name := part.FormName()
+			if name == "file" {
+				if hasFile || part.FileName() == "" || !exactPNGContentType(part.Header.Get("Content-Type")) {
+					_ = part.Close()
+					discard()
+					context.Status(http.StatusUnsupportedMediaType)
+					return
+				}
+				staged, err = options.Evidence.Stage(part, evidence.PNGContentType)
+				_ = part.Close()
+				if err != nil {
+					writeEvidenceStoreError(context, err)
+					return
+				}
+				hasFile = true
+				continue
+			}
+			if _, allowed := evidenceFieldNames[name]; !allowed || part.FileName() != "" {
+				_ = part.Close()
+				discard()
+				context.Status(http.StatusBadRequest)
+				return
+			}
+			if _, duplicate := fields[name]; duplicate {
+				_ = part.Close()
+				discard()
+				context.Status(http.StatusBadRequest)
+				return
+			}
+			value, err := io.ReadAll(io.LimitReader(part, maxEvidenceFieldBytes+1))
+			_ = part.Close()
+			if err != nil || len(value) == 0 || len(value) > maxEvidenceFieldBytes || !utf8.Valid(value) {
+				discard()
+				context.Status(http.StatusBadRequest)
+				return
+			}
+			fields[name] = string(value)
+		}
+		if !hasFile || len(fields) != len(evidenceFieldNames) {
+			discard()
+			context.Status(http.StatusBadRequest)
+			return
+		}
+		captured, err := time.Parse(time.RFC3339Nano, fields["captured_at"])
+		if err != nil || !strings.HasSuffix(fields["captured_at"], "Z") {
+			discard()
+			context.Status(http.StatusBadRequest)
+			return
+		}
+		asset, replayed, err := options.Evidence.Commit(context.Request.Context(), principal, evidence.UploadMetadata{
+			UploadKey: fields["upload_key"], TaskID: context.Param("id"), AttemptID: fields["attempt_id"],
+			Kind: fields["kind"], PrivacyTier: fields["privacy_tier"], SHA256: fields["sha256"], CapturedAt: captured.UTC(),
+		}, staged)
+		if err != nil {
+			writeEvidenceStoreError(context, err)
+			return
+		}
+		status := http.StatusCreated
+		if replayed {
+			status = http.StatusOK
+		}
+		context.JSON(status, asset)
+	}
+}
+
+func readEvidence(options Options) gin.HandlerFunc {
+	return func(context *gin.Context) {
+		if !options.Sessions.IsAuthenticated(context.Request) {
+			context.Status(http.StatusUnauthorized)
+			return
+		}
+		asset, file, err := options.Evidence.Open(context.Request.Context(), context.Param("asset_id"))
+		if errors.Is(err, evidence.ErrNotFound) {
+			context.Status(http.StatusNotFound)
+			return
+		}
+		if err != nil {
+			context.Status(http.StatusInternalServerError)
+			return
+		}
+		defer file.Close()
+		context.Header("Content-Type", evidence.PNGContentType)
+		context.Header("Content-Length", strconv.FormatInt(asset.ByteSize, 10))
+		context.Header("Content-Disposition", `inline; filename="evidence.png"`)
+		context.Header("Cache-Control", "no-store")
+		context.Header("X-Content-Type-Options", "nosniff")
+		context.Status(http.StatusOK)
+		if _, err := io.Copy(context.Writer, file); err != nil {
+			_ = context.Error(err)
+		}
+	}
+}
+
+func multipartBoundary(value string) (string, bool) {
+	mediaType, parameters, err := mime.ParseMediaType(value)
+	if err != nil || mediaType != "multipart/form-data" || len(parameters) != 1 || parameters["boundary"] == "" {
+		return "", false
+	}
+	return parameters["boundary"], true
+}
+
+func exactPNGContentType(value string) bool {
+	mediaType, parameters, err := mime.ParseMediaType(value)
+	return err == nil && mediaType == evidence.PNGContentType && len(parameters) == 0
+}
+
+func writeMultipartError(context *gin.Context, err error) {
+	var tooLarge *http.MaxBytesError
+	if errors.As(err, &tooLarge) {
+		context.Status(http.StatusRequestEntityTooLarge)
+		return
+	}
+	context.Status(http.StatusBadRequest)
+}
+
+func writeEvidenceStoreError(context *gin.Context, err error) {
+	var tooLarge *http.MaxBytesError
+	switch {
+	case errors.As(err, &tooLarge):
+		context.Status(http.StatusRequestEntityTooLarge)
+	case errors.Is(err, evidence.ErrTooLarge):
+		context.Status(http.StatusRequestEntityTooLarge)
+	case errors.Is(err, evidence.ErrInvalid):
+		context.Status(http.StatusBadRequest)
+	case errors.Is(err, evidence.ErrConflict):
+		context.Status(http.StatusConflict)
+	default:
+		context.Status(http.StatusInternalServerError)
+	}
+}

admin/internal/server/evidence_test.go

@@ -0,0 +1,451 @@
+package server_test
+
+import (
+	"bytes"
+	"context"
+	"crypto/sha256"
+	"database/sql"
+	"encoding/hex"
+	"encoding/json"
+	"image"
+	"image/png"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"net/http/httptest"
+	"net/textproto"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"testing"
+
+	"cmbuyer/admin/internal/deviceauth"
+	"cmbuyer/admin/internal/evidence"
+	"cmbuyer/admin/internal/migrations"
+	evidencestorage "cmbuyer/admin/internal/storage/evidence"
+	"cmbuyer/admin/internal/storage/sqlite"
+)
+
+const (
+	evidenceTaskID    = "63c9f507-7473-4fa6-8d71-8786c34c6301"
+	evidenceAuthID    = "73c9f507-7473-4fa6-8d71-8786c34c6301"
+	evidenceAttemptID = "83c9f507-7473-4fa6-8d71-8786c34c6301"
+	evidenceUploadKey = "93c9f507-7473-4fa6-8d71-8786c34c6301"
+	evidenceDeviceID  = "13c9f507-7473-4fa6-8d71-8786c34c6301"
+)
+
+func TestEvidenceUploadAuthenticatesBeforeReadingBody(t *testing.T) {
+	authenticator := &fakeDeviceAuthenticator{}
+	router, _ := newRouterWithDependencies(t, &memoryStore{}, emptyDetailStore{}, emptyEvidenceStore{}, authenticator)
+	poison := &poisonBody{}
+	request := httptest.NewRequest(http.MethodPost, "/api/v1/tasks/"+evidenceTaskID+"/evidence", nil)
+	request.Body = poison
+	request.Header.Set("Content-Type", "text/plain")
+	response := httptest.NewRecorder()
+
+	router.ServeHTTP(response, request)
+
+	if response.Code != http.StatusUnauthorized || response.Body.Len() != 0 || response.Header().Get("WWW-Authenticate") != "Bearer" || poison.reads != 0 || authenticator.calls != 1 {
+		t.Fatalf("status/reads/auth calls = %d/%d/%d, want 401/0/1", response.Code, poison.reads, authenticator.calls)
+	}
+	assertSecurityHeaders(t, response)
+}
+
+func TestEvidenceUploadAuthenticationStorageFailureBeforeReadingBody(t *testing.T) {
+	database, err := sqlite.Open(filepath.Join(t.TempDir(), "authentication-failure.db"))
+	if err != nil {
+		t.Fatalf("open database: %v", err)
+	}
+	if err := migrations.Up(context.Background(), database, testMigrationDirectory(t)); err != nil {
+		t.Fatalf("migrate database: %v", err)
+	}
+	authenticator, err := deviceauth.NewSQLiteAuthenticator(database)
+	if err != nil {
+		t.Fatalf("new authenticator: %v", err)
+	}
+	credentialStore, err := deviceauth.NewCredentialStore(database)
+	if err != nil {
+		t.Fatalf("new credential store: %v", err)
+	}
+	issued, err := credentialStore.Issue(context.Background(), "test device")
+	if err != nil {
+		t.Fatalf("issue credential: %v", err)
+	}
+	if err := database.Close(); err != nil {
+		t.Fatalf("close database: %v", err)
+	}
+	router, _ := newRouterWithDependencies(t, &memoryStore{}, emptyDetailStore{}, emptyEvidenceStore{}, authenticator)
+	poison := &poisonBody{}
+	request := httptest.NewRequest(http.MethodPost, "/api/v1/tasks/"+evidenceTaskID+"/evidence", nil)
+	request.Body = poison
+	request.Header.Set(deviceauth.AuthorizationHeader, "Bearer "+issued.Token)
+	request.Header.Set(deviceauth.DeviceIDHeader, issued.DeviceID)
+	response := httptest.NewRecorder()
+	router.ServeHTTP(response, request)
+	if response.Code != http.StatusServiceUnavailable || response.Body.Len() != 0 || poison.reads != 0 {
+		t.Fatalf("storage failure status/body/reads = %d/%q/%d, want 503/empty/0", response.Code, response.Body.String(), poison.reads)
+	}
+}
+
+func TestEvidenceUploadRejectsInvalidSuccessfulPrincipalBeforeReadingBody(t *testing.T) {
+	router, _ := newRouterWithDependencies(t, &memoryStore{}, emptyDetailStore{}, emptyEvidenceStore{}, uncheckedDeviceAuthenticator{})
+	poison := &poisonBody{}
+	request := httptest.NewRequest(http.MethodPost, "/api/v1/tasks/"+evidenceTaskID+"/evidence", nil)
+	request.Body = poison
+	response := httptest.NewRecorder()
+	router.ServeHTTP(response, request)
+	if response.Code != http.StatusServiceUnavailable || response.Body.Len() != 0 || poison.reads != 0 {
+		t.Fatalf("invalid principal status/body/reads = %d/%q/%d, want 503/empty/0", response.Code, response.Body.String(), poison.reads)
+	}
+}
+
+func TestAdminSessionCannotActAsDeviceUploader(t *testing.T) {
+	router, _ := newRouter(t)
+	cookie := authenticate(t, router)
+	request := httptest.NewRequest(http.MethodPost, "/api/v1/tasks/"+evidenceTaskID+"/evidence", nil)
+	request.Body = &poisonBody{}
+	request.AddCookie(cookie)
+	response := httptest.NewRecorder()
+	router.ServeHTTP(response, request)
+	if response.Code != http.StatusUnauthorized {
+		t.Fatalf("admin upload status = %d, want 401", response.Code)
+	}
+}
+
+func TestRealDeviceCredentialIdentityIsolationAndMixedCredentials(t *testing.T) {
+	database, err := sqlite.Open(filepath.Join(t.TempDir(), "identity-isolation.db"))
+	if err != nil {
+		t.Fatalf("open database: %v", err)
+	}
+	t.Cleanup(func() { _ = database.Close() })
+	if err := migrations.Up(context.Background(), database, testMigrationDirectory(t)); err != nil {
+		t.Fatalf("migrate database: %v", err)
+	}
+	insertEvidenceAttempt(t, database)
+	assetStore, err := evidencestorage.NewStore(database, filepath.Join(t.TempDir(), "assets"))
+	if err != nil {
+		t.Fatalf("new evidence store: %v", err)
+	}
+	credentialStore, err := deviceauth.NewCredentialStore(database)
+	if err != nil {
+		t.Fatalf("new credential store: %v", err)
+	}
+	issued, err := credentialStore.Issue(context.Background(), "采购工具一号")
+	if err != nil {
+		t.Fatalf("issue credential: %v", err)
+	}
+	authenticator, err := deviceauth.NewSQLiteAuthenticator(database)
+	if err != nil {
+		t.Fatalf("new authenticator: %v", err)
+	}
+	taskStore := &memoryStore{}
+	router, _ := newRouterWithDependencies(t, taskStore, emptyDetailStore{}, assetStore, authenticator)
+	addDeviceHeaders := func(request *http.Request) {
+		request.Header.Set(deviceauth.AuthorizationHeader, "Bearer "+issued.Token)
+		request.Header.Set(deviceauth.DeviceIDHeader, issued.DeviceID)
+	}
+
+	start := newStartRequest(t, validStartBody(), "application/json", "", nil)
+	addDeviceHeaders(start)
+	startResponse := httptest.NewRecorder()
+	router.ServeHTTP(startResponse, start)
+	create := httptest.NewRequest(http.MethodPost, "/tasks", strings.NewReader("title=device"))
+	create.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	addDeviceHeaders(create)
+	createResponse := httptest.NewRecorder()
+	router.ServeHTTP(createResponse, create)
+	if startResponse.Code != http.StatusUnauthorized || createResponse.Code != http.StatusUnauthorized || taskStore.startCalls != 0 || len(taskStore.drafts) != 0 {
+		t.Fatalf("device management isolation = start %d/create %d/calls %d/drafts %d", startResponse.Code, createResponse.Code, taskStore.startCalls, len(taskStore.drafts))
+	}
+
+	adminCookie, csrf := authenticatedStartSession(t, router)
+	mixedWithoutCSRF := newStartRequest(t, validStartBody(), "application/json", "", adminCookie)
+	addDeviceHeaders(mixedWithoutCSRF)
+	mixedWithoutCSRFResponse := httptest.NewRecorder()
+	router.ServeHTTP(mixedWithoutCSRFResponse, mixedWithoutCSRF)
+	if mixedWithoutCSRFResponse.Code != http.StatusForbidden || taskStore.startCalls != 0 {
+		t.Fatalf("mixed request bypassed admin CSRF: status/calls=%d/%d", mixedWithoutCSRFResponse.Code, taskStore.startCalls)
+	}
+	mixedAdmin := newStartRequest(t, validStartBody(), "application/json", csrf, adminCookie)
+	addDeviceHeaders(mixedAdmin)
+	mixedAdminResponse := httptest.NewRecorder()
+	router.ServeHTTP(mixedAdminResponse, mixedAdmin)
+	if mixedAdminResponse.Code != http.StatusBadRequest || taskStore.startCalls != 1 {
+		t.Fatalf("mixed admin request changed identity domain: status/calls=%d/%d", mixedAdminResponse.Code, taskStore.startCalls)
+	}
+
+	pngBytes := serverTestPNG(t, 3, 2)
+	upload := newEvidenceUploadRequest(t, evidenceTaskID, validEvidenceFields(pngBytes), pngBytes, evidence.PNGContentType, "raw.png", nil)
+	addDeviceHeaders(upload)
+	upload.AddCookie(adminCookie)
+	uploadResponse := httptest.NewRecorder()
+	router.ServeHTTP(uploadResponse, upload)
+	if uploadResponse.Code != http.StatusCreated {
+		t.Fatalf("mixed upload status/body = %d/%q", uploadResponse.Code, uploadResponse.Body.String())
+	}
+	var uploadedBy string
+	if err := database.QueryRow(`SELECT uploaded_by_device_id FROM evidence_assets`).Scan(&uploadedBy); err != nil || uploadedBy != issued.DeviceID {
+		t.Fatalf("uploaded principal = %q, err=%v", uploadedBy, err)
+	}
+
+	if _, _, err := credentialStore.Revoke(context.Background(), issued.DeviceID); err != nil {
+		t.Fatalf("revoke credential: %v", err)
+	}
+	revokedUpload := newEvidenceUploadRequest(t, evidenceTaskID, validEvidenceFields(pngBytes), pngBytes, evidence.PNGContentType, "raw.png", nil)
+	addDeviceHeaders(revokedUpload)
+	revokedResponse := httptest.NewRecorder()
+	router.ServeHTTP(revokedResponse, revokedUpload)
+	if revokedResponse.Code != http.StatusUnauthorized || revokedResponse.Body.Len() != 0 {
+		t.Fatalf("revoked upload = %d/%q", revokedResponse.Code, revokedResponse.Body.String())
+	}
+}
+
+func TestEvidenceUploadReplayConflictAndProtectedRead(t *testing.T) {
+	router, database := newEvidenceRouter(t, &fakeDeviceAuthenticator{principal: deviceauth.Principal{ID: evidenceDeviceID}})
+	pngBytes := serverTestPNG(t, 6, 4)
+	fields := validEvidenceFields(pngBytes)
+
+	first := serveEvidenceUpload(t, router, evidenceTaskID, fields, pngBytes, evidence.PNGContentType, `..\private\original.png`, nil)
+	if first.Code != http.StatusCreated {
+		t.Fatalf("first upload status/body = %d/%q", first.Code, first.Body.String())
+	}
+	var asset evidence.Asset
+	if err := json.Unmarshal(first.Body.Bytes(), &asset); err != nil {
+		t.Fatalf("decode upload response: %v", err)
+	}
+	if asset.TaskID != evidenceTaskID || asset.AttemptID != evidenceAttemptID || asset.SHA256 != fields["sha256"] || strings.Contains(first.Body.String(), "private") || strings.Contains(first.Body.String(), "original.png") {
+		t.Fatalf("unsafe upload response = %s", first.Body.String())
+	}
+
+	replay := serveEvidenceUpload(t, router, evidenceTaskID, fields, pngBytes, evidence.PNGContentType, "again.png", nil)
+	if replay.Code != http.StatusOK {
+		t.Fatalf("replay status = %d, want 200", replay.Code)
+	}
+	var replayed evidence.Asset
+	if err := json.Unmarshal(replay.Body.Bytes(), &replayed); err != nil || replayed.ID != asset.ID {
+		t.Fatalf("replay asset = %#v, err %v", replayed, err)
+	}
+
+	conflicting := copyStringMap(fields)
+	conflicting["captured_at"] = "2026-08-04T09:01:01Z"
+	if response := serveEvidenceUpload(t, router, evidenceTaskID, conflicting, pngBytes, evidence.PNGContentType, "same.png", nil); response.Code != http.StatusConflict {
+		t.Fatalf("conflicting replay status = %d, want 409", response.Code)
+	}
+	var count int
+	if err := database.QueryRow("SELECT COUNT(*) FROM evidence_assets").Scan(&count); err != nil || count != 1 {
+		t.Fatalf("asset count = %d, err %v", count, err)
+	}
+
+	if response := serve(router, http.MethodGet, "/evidence/"+asset.ID, nil, nil); response.Code != http.StatusUnauthorized || response.Body.Len() != 0 {
+		t.Fatalf("anonymous read = %d/%q", response.Code, response.Body.String())
+	}
+	adminCookie := authenticate(t, router)
+	read := serve(router, http.MethodGet, "/evidence/"+asset.ID, nil, adminCookie)
+	if read.Code != http.StatusOK || !bytes.Equal(read.Body.Bytes(), pngBytes) {
+		t.Fatalf("admin read = %d, bytes equal %t", read.Code, bytes.Equal(read.Body.Bytes(), pngBytes))
+	}
+	for header, want := range map[string]string{"Content-Type": "image/png", "Cache-Control": "no-store", "X-Content-Type-Options": "nosniff", "Content-Disposition": `inline; filename="evidence.png"`} {
+		if got := read.Header().Get(header); got != want {
+			t.Fatalf("%s = %q, want %q", header, got, want)
+		}
+	}
+	missing := serve(router, http.MethodGet, "/evidence/not-a-uuid", nil, adminCookie)
+	if missing.Code != http.StatusNotFound || missing.Body.Len() != 0 {
+		t.Fatalf("missing evidence = %d/%q", missing.Code, missing.Body.String())
+	}
+}
+
+func TestEvidenceUploadRejectsStrictMultipartViolations(t *testing.T) {
+	router, database := newEvidenceRouter(t, &fakeDeviceAuthenticator{principal: deviceauth.Principal{ID: evidenceDeviceID}})
+	pngBytes := serverTestPNG(t, 2, 2)
+	base := validEvidenceFields(pngBytes)
+	wrongHash := copyStringMap(base)
+	wrongHash["sha256"] = strings.Repeat("b", 64)
+	uppercaseHash := copyStringMap(base)
+	uppercaseHash["sha256"] = strings.ToUpper(uppercaseHash["sha256"])
+	wrongPrivacy := copyStringMap(base)
+	wrongPrivacy["privacy_tier"] = "PUBLIC"
+	wrongKind := copyStringMap(base)
+	wrongKind["kind"] = "ORDER_CONFIRM"
+	tests := []struct {
+		name        string
+		fields      map[string]string
+		file        []byte
+		contentType string
+		extra       func(*multipart.Writer) error
+		want        int
+	}{
+		{name: "attempt belongs to another task", fields: base, file: pngBytes, contentType: evidence.PNGContentType, want: http.StatusBadRequest},
+		{name: "xml file", fields: base, file: []byte("<hierarchy/>"), contentType: evidence.PNGContentType, want: http.StatusBadRequest},
+		{name: "wrong hash", fields: wrongHash, file: pngBytes, contentType: evidence.PNGContentType, want: http.StatusBadRequest},
+		{name: "uppercase hash", fields: uppercaseHash, file: pngBytes, contentType: evidence.PNGContentType, want: http.StatusBadRequest},
+		{name: "wrong privacy", fields: wrongPrivacy, file: pngBytes, contentType: evidence.PNGContentType, want: http.StatusBadRequest},
+		{name: "unapproved kind", fields: wrongKind, file: pngBytes, contentType: evidence.PNGContentType, want: http.StatusBadRequest},
+		{name: "too large", fields: base, file: make([]byte, evidence.MaxFileBytes+1), contentType: evidence.PNGContentType, want: http.StatusRequestEntityTooLarge},
+		{name: "wrong file content type", fields: base, file: pngBytes, contentType: "application/xml", want: http.StatusUnsupportedMediaType},
+		{name: "unknown path field", fields: base, file: pngBytes, contentType: evidence.PNGContentType, extra: func(writer *multipart.Writer) error { return writer.WriteField("path", `C:\secret.xml`) }, want: http.StatusBadRequest},
+		{name: "duplicate metadata", fields: base, file: pngBytes, contentType: evidence.PNGContentType, extra: func(writer *multipart.Writer) error { return writer.WriteField("sha256", base["sha256"]) }, want: http.StatusBadRequest},
+		{name: "second file", fields: base, file: pngBytes, contentType: evidence.PNGContentType, extra: func(writer *multipart.Writer) error {
+			part, err := writer.CreateFormFile("file", "second.png")
+			if err == nil {
+				_, err = part.Write(pngBytes)
+			}
+			return err
+		}, want: http.StatusUnsupportedMediaType},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			taskID := evidenceTaskID
+			if test.name == "attempt belongs to another task" {
+				taskID = "a3c9f507-7473-4fa6-8d71-8786c34c6301"
+			}
+			response := serveEvidenceUpload(t, router, taskID, copyStringMap(test.fields), test.file, test.contentType, "file.png", test.extra)
+			if response.Code != test.want || response.Body.Len() != 0 {
+				t.Fatalf("status/body = %d/%q, want %d/empty", response.Code, response.Body.String(), test.want)
+			}
+		})
+	}
+	var count int
+	if err := database.QueryRow("SELECT COUNT(*) FROM evidence_assets").Scan(&count); err != nil || count != 0 {
+		t.Fatalf("invalid requests created %d assets, err %v", count, err)
+	}
+}
+
+type fakeDeviceAuthenticator struct {
+	principal deviceauth.Principal
+	err       error
+	calls     int
+}
+
+func (authenticator *fakeDeviceAuthenticator) Authenticate(*http.Request) (deviceauth.Principal, error) {
+	authenticator.calls++
+	if authenticator.err != nil {
+		return deviceauth.Principal{}, authenticator.err
+	}
+	if authenticator.principal.ID == "" {
+		return deviceauth.Principal{}, deviceauth.ErrUnauthenticated
+	}
+	return authenticator.principal, nil
+}
+
+type poisonBody struct{ reads int }
+
+type uncheckedDeviceAuthenticator struct{}
+
+func (uncheckedDeviceAuthenticator) Authenticate(*http.Request) (deviceauth.Principal, error) {
+	return deviceauth.Principal{}, nil
+}
+
+func (body *poisonBody) Read([]byte) (int, error) {
+	body.reads++
+	return 0, io.ErrUnexpectedEOF
+}
+func (*poisonBody) Close() error { return nil }
+
+func newEvidenceRouter(t *testing.T, authenticator deviceauth.Authenticator) (http.Handler, *sql.DB) {
+	t.Helper()
+	database, err := sqlite.Open(filepath.Join(t.TempDir(), "server-evidence.db"))
+	if err != nil {
+		t.Fatalf("open database: %v", err)
+	}
+	t.Cleanup(func() { _ = database.Close() })
+	if err := migrations.Up(context.Background(), database, testMigrationDirectory(t)); err != nil {
+		t.Fatalf("migrate database: %v", err)
+	}
+	insertEvidenceAttempt(t, database)
+	store, err := evidencestorage.NewStore(database, filepath.Join(t.TempDir(), "assets"))
+	if err != nil {
+		t.Fatalf("new evidence store: %v", err)
+	}
+	router, _ := newRouterWithDependencies(t, &memoryStore{}, emptyDetailStore{}, store, authenticator)
+	return router, database
+}
+
+func testMigrationDirectory(t *testing.T) string {
+	t.Helper()
+	_, file, _, ok := runtime.Caller(0)
+	if !ok {
+		t.Fatal("locate migration directory")
+	}
+	return filepath.Join(filepath.Dir(file), "..", "..", "migrations")
+}
+
+func insertEvidenceAttempt(t *testing.T, database *sql.DB) {
+	t.Helper()
+	timestamp := "2026-08-04T00:00:00Z"
+	if _, err := database.Exec(`INSERT INTO tasks (id, source, title, goods_id, sku_color, sku_size, quantity, max_total_price, status, version, created_at, updated_at) VALUES (?, 'MANUAL', 'task', '123', 'black', 'M', 1, '1.00', 'DRAFT', 1, ?, ?)`, evidenceTaskID, timestamp, timestamp); err != nil {
+		t.Fatalf("insert task: %v", err)
+	}
+	if _, err := database.Exec(`INSERT INTO order_authorizations (id, task_id, task_version, start_key, goods_id, sku_color, sku_size, quantity, total_price_cap, status, created_by, created_at, expires_at) VALUES (?, ?, 1, 'start', '123', 'black', 'M', 1, '1.00', 'ACTIVE', 'admin', ?, ?)`, evidenceAuthID, evidenceTaskID, timestamp, timestamp); err != nil {
+		t.Fatalf("insert authorization: %v", err)
+	}
+	if _, err := database.Exec(`INSERT INTO purchase_attempts (id, task_id, authorization_id, claim_generation, status, started_at) VALUES (?, ?, ?, 1, 'CLAIMED', ?)`, evidenceAttemptID, evidenceTaskID, evidenceAuthID, timestamp); err != nil {
+		t.Fatalf("insert attempt: %v", err)
+	}
+}
+
+func serveEvidenceUpload(t *testing.T, router http.Handler, taskID string, fields map[string]string, file []byte, fileContentType, filename string, extra func(*multipart.Writer) error) *httptest.ResponseRecorder {
+	t.Helper()
+	request := newEvidenceUploadRequest(t, taskID, fields, file, fileContentType, filename, extra)
+	response := httptest.NewRecorder()
+	router.ServeHTTP(response, request)
+	return response
+}
+
+func newEvidenceUploadRequest(t *testing.T, taskID string, fields map[string]string, file []byte, fileContentType, filename string, extra func(*multipart.Writer) error) *http.Request {
+	t.Helper()
+	var body bytes.Buffer
+	writer := multipart.NewWriter(&body)
+	for _, name := range []string{"upload_key", "attempt_id", "kind", "privacy_tier", "sha256", "captured_at"} {
+		if err := writer.WriteField(name, fields[name]); err != nil {
+			t.Fatalf("write field %s: %v", name, err)
+		}
+	}
+	header := make(textproto.MIMEHeader)
+	header.Set("Content-Disposition", `form-data; name="file"; filename="`+filename+`"`)
+	header.Set("Content-Type", fileContentType)
+	part, err := writer.CreatePart(header)
+	if err != nil {
+		t.Fatalf("create file part: %v", err)
+	}
+	if _, err := part.Write(file); err != nil {
+		t.Fatalf("write file: %v", err)
+	}
+	if extra != nil {
+		if err := extra(writer); err != nil {
+			t.Fatalf("write extra part: %v", err)
+		}
+	}
+	if err := writer.Close(); err != nil {
+		t.Fatalf("close multipart: %v", err)
+	}
+	request := httptest.NewRequest(http.MethodPost, "/api/v1/tasks/"+taskID+"/evidence", bytes.NewReader(body.Bytes()))
+	request.Header.Set("Content-Type", writer.FormDataContentType())
+	return request
+}
+
+func validEvidenceFields(pngBytes []byte) map[string]string {
+	hash := sha256.Sum256(pngBytes)
+	return map[string]string{
+		"upload_key": evidenceUploadKey, "attempt_id": evidenceAttemptID,
+		"kind": evidence.KindSKUPanelGate1, "privacy_tier": evidence.PrivacyInternalRaw,
+		"sha256": hex.EncodeToString(hash[:]), "captured_at": "2026-08-04T09:01:00Z",
+	}
+}
+
+func serverTestPNG(t *testing.T, width, height int) []byte {
+	t.Helper()
+	var buffer bytes.Buffer
+	if err := png.Encode(&buffer, image.NewNRGBA(image.Rect(0, 0, width, height))); err != nil {
+		t.Fatalf("encode PNG: %v", err)
+	}
+	return buffer.Bytes()
+}
+
+func copyStringMap(values map[string]string) map[string]string {
+	copy := make(map[string]string, len(values))
+	for key, value := range values {
+		copy[key] = value
+	}
+	return copy
+}

admin/internal/server/router.go

@@ -2,18 +2,435 @@
 package server
 
 import (
+	"bytes"
+	"crypto/subtle"
+	"encoding/json"
+	"errors"
+	"io"
+	"mime"
 	"net/http"
+	"net/url"
+	"strings"
+	"unicode/utf8"
+
+	"cmbuyer/admin/internal/auth"
+	"cmbuyer/admin/internal/deviceauth"
+	"cmbuyer/admin/internal/evidence"
+	"cmbuyer/admin/internal/taskdetail"
+	"cmbuyer/admin/internal/tasks"
+	"cmbuyer/admin/internal/transport/webui"
 
 	"github.com/gin-gonic/gin"
+	"golang.org/x/crypto/bcrypt"
 )
 
-// NewRouter 返回当前服务范围内的完整 HTTP 路由。
-func NewRouter() *gin.Engine {
-	router := gin.New()
+const maxFormBytes = 8 << 10
+const maxJSONBytes = 64 << 10
 
-	router.GET("/healthz", func(context *gin.Context) {
-		context.JSON(http.StatusOK, gin.H{"status": "ok"})
+// Options 是路由层需要的安全依赖。凭据由启动配置注入，不能在路由中设置默认值。
+type Options struct {
+	AdminUsername       string
+	AdminPasswordBcrypt string
+	Sessions            *auth.Manager
+	Tasks               tasks.Store
+	TaskDetails         taskdetail.Store
+	Evidence            evidence.Store
+	DeviceAuthenticator deviceauth.Authenticator
+}
+
+// NewRouter 返回当前服务范围内的完整 HTTP 路由。
+func NewRouter(options Options) (*gin.Engine, error) {
+	if options.AdminUsername == "" || options.AdminPasswordBcrypt == "" || options.Sessions == nil || options.Tasks == nil || options.TaskDetails == nil || options.Evidence == nil || options.DeviceAuthenticator == nil {
+		return nil, errors.New("server authentication options are incomplete")
+	}
+
+	router := gin.New()
+	router.Use(gin.Recovery())
+	router.Use(securityHeaders())
+	router.GET("/healthz", healthz)
+	router.GET("/login", loginPage(options))
+	router.POST("/login", login(options))
+	router.POST("/logout", logout(options))
+	router.GET("/tasks", tasksPage(options))
+	router.GET("/tasks/:id", taskDetailPage(options))
+	router.GET("/tasks/new", newTaskPage(options))
+	router.POST("/tasks", createTask(options))
+	router.POST("/tasks/start-purchases", startPurchases(options))
+	router.POST("/api/v1/tasks/:id/evidence", uploadEvidence(options))
+	router.GET("/evidence/:asset_id", readEvidence(options))
+	router.GET("/static/tasks.js", func(context *gin.Context) {
+		context.Data(http.StatusOK, "application/javascript; charset=utf-8", webui.TasksScript())
 	})
 
-	return router
+	return router, nil
+}
+
+func startPurchases(options Options) gin.HandlerFunc {
+	return func(context *gin.Context) {
+		if !options.Sessions.IsAuthenticated(context.Request) {
+			context.Status(http.StatusUnauthorized)
+			return
+		}
+		authenticated, csrfOK := options.Sessions.VerifyCSRF(context.Request, context.GetHeader("X-CSRF-Token"))
+		if !authenticated || !csrfOK {
+			context.Status(http.StatusForbidden)
+			return
+		}
+		if !isJSONContentType(context.GetHeader("Content-Type")) {
+			context.Status(http.StatusUnsupportedMediaType)
+			return
+		}
+		context.Request.Body = http.MaxBytesReader(context.Writer, context.Request.Body, maxJSONBytes)
+		raw, err := io.ReadAll(context.Request.Body)
+		if err != nil {
+			var tooLarge *http.MaxBytesError
+			if errors.As(err, &tooLarge) {
+				context.Status(http.StatusRequestEntityTooLarge)
+			} else {
+				context.Status(http.StatusBadRequest)
+			}
+			return
+		}
+		if !utf8.Valid(raw) {
+			context.Status(http.StatusBadRequest)
+			return
+		}
+		decoder := json.NewDecoder(bytes.NewReader(raw))
+		decoder.DisallowUnknownFields()
+		var command tasks.StartCommand
+		if err := decoder.Decode(&command); err != nil {
+			context.Status(http.StatusBadRequest)
+			return
+		}
+		var extra any
+		if err := decoder.Decode(&extra); err != io.EOF {
+			context.Status(http.StatusBadRequest)
+			return
+		}
+		result, err := options.Tasks.StartPurchases(context.Request.Context(), command, options.AdminUsername)
+		if err != nil {
+			if errors.Is(err, tasks.ErrInvalidStart) {
+				context.Status(http.StatusBadRequest)
+			} else if errors.Is(err, tasks.ErrStartConflict) {
+				context.Status(http.StatusConflict)
+			} else {
+				context.Status(http.StatusInternalServerError)
+			}
+			return
+		}
+		context.JSON(http.StatusOK, result)
+	}
+}
+
+func isJSONContentType(value string) bool {
+	mediaType, parameters, err := mime.ParseMediaType(value)
+	if err != nil || mediaType != "application/json" {
+		return false
+	}
+	for name, value := range parameters {
+		if name != "charset" || !strings.EqualFold(value, "utf-8") {
+			return false
+		}
+	}
+	return true
+}
+
+func healthz(context *gin.Context) {
+	context.JSON(http.StatusOK, gin.H{"status": "ok"})
+}
+
+func securityHeaders() gin.HandlerFunc {
+	return func(context *gin.Context) {
+		context.Header("Cache-Control", "no-store")
+		context.Header("X-Content-Type-Options", "nosniff")
+		context.Header("Referrer-Policy", "no-referrer")
+		context.Header("Content-Security-Policy", "default-src 'self'; style-src 'self' 'unsafe-inline'; script-src 'self'; object-src 'none'; base-uri 'none'; frame-ancestors 'none'; form-action 'self'")
+		context.Next()
+	}
+}
+
+func loginPage(options Options) gin.HandlerFunc {
+	return func(context *gin.Context) {
+		csrfToken, authenticated := options.Sessions.Ensure(context.Writer, context.Request)
+		if authenticated {
+			context.Redirect(http.StatusSeeOther, "/tasks")
+			return
+		}
+
+		renderLogin(context, http.StatusOK, csrfToken, returnTo(context.Query("return_to")), "", "")
+	}
+}
+
+func login(options Options) gin.HandlerFunc {
+	return func(context *gin.Context) {
+		if !parseForm(context) {
+			return
+		}
+		form := context.Request.PostForm
+		csrfToken := form.Get("csrf_token")
+		returnPath := returnTo(form.Get("return_to"))
+		username := form.Get("username")
+		password := form.Get("password")
+
+		if _, ok := options.Sessions.VerifyCSRF(context.Request, csrfToken); !ok {
+			newCSRF, _ := options.Sessions.Ensure(context.Writer, context.Request)
+			renderLogin(context, http.StatusForbidden, newCSRF, returnPath, "", "请求已过期，请重新登录。")
+			return
+		}
+
+		usernameMatches := subtle.ConstantTimeCompare([]byte(options.AdminUsername), []byte(username)) == 1
+		passwordMatches := bcrypt.CompareHashAndPassword([]byte(options.AdminPasswordBcrypt), []byte(password)) == nil
+		if !usernameMatches || !passwordMatches {
+			csrf, _ := options.Sessions.Ensure(context.Writer, context.Request)
+			renderLogin(context, http.StatusUnauthorized, csrf, returnPath, "", "账号或密码不正确，请检查后重试。")
+			return
+		}
+
+		options.Sessions.RotateAuthenticated(context.Writer, context.Request)
+		context.Redirect(http.StatusSeeOther, returnPath)
+	}
+}
+
+func logout(options Options) gin.HandlerFunc {
+	return func(context *gin.Context) {
+		if !parseForm(context) {
+			return
+		}
+		authenticated, ok := options.Sessions.VerifyCSRF(context.Request, context.Request.PostForm.Get("csrf_token"))
+		if !ok || !authenticated {
+			context.Status(http.StatusForbidden)
+			return
+		}
+
+		options.Sessions.Logout(context.Writer, context.Request)
+		context.Redirect(http.StatusSeeOther, "/login")
+	}
+}
+
+func tasksPage(options Options) gin.HandlerFunc {
+	return func(context *gin.Context) {
+		csrfToken, authenticated := options.Sessions.Ensure(context.Writer, context.Request)
+		if !authenticated {
+			context.Redirect(http.StatusSeeOther, "/login?return_to="+url.QueryEscape(context.Request.URL.RequestURI()))
+			return
+		}
+
+		filter := tasks.TaskFilter{Keyword: context.Query("keyword"), Status: context.Query("status"), CreatedFrom: context.Query("created_from"), CreatedTo: context.Query("created_to")}
+		if validation := tasks.ValidateTaskFilter(filter); !validation.Valid() {
+			startKey, err := tasks.NewCreateKey()
+			if err != nil {
+				context.Status(http.StatusInternalServerError)
+				return
+			}
+			renderTasks(context, http.StatusBadRequest, webui.TasksData{CSRFToken: csrfToken, Filter: filter, FilterErrors: validation, HasFilter: true, StartKey: startKey})
+			return
+		}
+		data, err := taskListData(context, options, csrfToken, filter)
+		if err != nil {
+			context.Status(http.StatusInternalServerError)
+			return
+		}
+		for _, row := range data.Tasks {
+			if row.ID == context.Query("created") {
+				data.Success = true
+				break
+			}
+		}
+		if context.Query("create") == "1" {
+			form, err := newTaskForm()
+			if err != nil {
+				context.Status(http.StatusInternalServerError)
+				return
+			}
+			data.OpenForm = true
+			data.Form = form
+			data.FocusField = "title"
+		}
+		renderTasks(context, http.StatusOK, data)
+	}
+}
+
+func newTaskPage(options Options) gin.HandlerFunc {
+	return func(context *gin.Context) {
+		csrf, authenticated := options.Sessions.Ensure(context.Writer, context.Request)
+		if !authenticated {
+			context.Redirect(http.StatusSeeOther, "/login?return_to=%2Ftasks%2Fnew")
+			return
+		}
+		form, err := newTaskForm()
+		if err != nil {
+			context.Status(http.StatusInternalServerError)
+			return
+		}
+		renderTasks(context, http.StatusOK, webui.TasksData{CSRFToken: csrf, Form: form, FullPage: true, FocusField: "title"})
+	}
+}
+func createTask(options Options) gin.HandlerFunc {
+	return func(context *gin.Context) {
+		if !options.Sessions.IsAuthenticated(context.Request) {
+			context.Status(http.StatusUnauthorized)
+			return
+		}
+		if !parseForm(context) {
+			return
+		}
+		requestForm := context.Request.PostForm
+		authenticated, csrfOK := options.Sessions.VerifyCSRF(context.Request, requestForm.Get("csrf_token"))
+		if !csrfOK || !authenticated {
+			context.Status(http.StatusForbidden)
+			return
+		}
+		form := taskForm(requestForm)
+		draft, validation := tasks.Validate(form)
+		if draft.GoodsID != "" {
+			form.ProductURL = tasks.CanonicalURL(draft.GoodsID)
+		}
+		fullPage := requestForm.Get("form_mode") == "full"
+		if !validation.Valid() {
+			data, ok := createErrorData(context, options, fullPage)
+			if !ok {
+				return
+			}
+			data.Form = form
+			data.Errors = validation
+			data.OpenForm = !fullPage
+			data.FullPage = fullPage
+			data.FocusField = firstError(validation)
+			renderTasks(context, http.StatusBadRequest, data)
+			return
+		}
+		created, err := options.Tasks.CreateDraft(context.Request.Context(), draft)
+		if err != nil {
+			if errors.Is(err, tasks.ErrCreateKeyConflict) {
+				validation["create_key"] = "该创建请求已用于另一条任务，请重新打开表单。"
+				data, ok := createErrorData(context, options, fullPage)
+				if !ok {
+					return
+				}
+				data.Form = form
+				data.Errors = validation
+				data.OpenForm = !fullPage
+				data.FullPage = fullPage
+				data.FocusField = firstError(validation)
+				renderTasks(context, http.StatusConflict, data)
+				return
+			}
+			context.Status(http.StatusInternalServerError)
+			return
+		}
+		context.Redirect(http.StatusSeeOther, "/tasks?created="+url.QueryEscape(created.ID))
+	}
+}
+
+func newTaskForm() (tasks.Form, error) {
+	key, err := tasks.NewCreateKey()
+	if err != nil {
+		return tasks.Form{}, err
+	}
+	return tasks.Form{CreateKey: key}, nil
+}
+func taskForm(form url.Values) tasks.Form {
+	return tasks.Form{CreateKey: form.Get("create_key"), Title: form.Get("title"), ProductURL: form.Get("product_url"), SKUColor: form.Get("sku_color"), SKUSize: form.Get("sku_size"), Quantity: form.Get("quantity"), MaxTotalPrice: form.Get("max_total_price")}
+}
+func csrfFor(context *gin.Context, options Options) string {
+	csrf, _ := options.Sessions.Ensure(context.Writer, context.Request)
+	return csrf
+}
+
+func taskListData(context *gin.Context, options Options, csrfToken string, filter tasks.TaskFilter) (webui.TasksData, error) {
+	rows, err := options.Tasks.ListTasks(context.Request.Context(), filter)
+	if err != nil {
+		return webui.TasksData{}, err
+	}
+	startKey, err := tasks.NewCreateKey()
+	if err != nil {
+		return webui.TasksData{}, err
+	}
+	return webui.TasksData{
+		CSRFToken: csrfToken,
+		Tasks:     rows,
+		Filter:    filter,
+		HasFilter: filter.Keyword != "" || filter.Status != "" || filter.CreatedFrom != "" || filter.CreatedTo != "",
+		StartKey:  startKey,
+	}, nil
+}
+
+func createErrorData(context *gin.Context, options Options, fullPage bool) (webui.TasksData, bool) {
+	csrfToken := csrfFor(context, options)
+	if fullPage {
+		return webui.TasksData{CSRFToken: csrfToken}, true
+	}
+	data, err := taskListData(context, options, csrfToken, tasks.TaskFilter{})
+	if err != nil {
+		context.Status(http.StatusInternalServerError)
+		return webui.TasksData{}, false
+	}
+	return data, true
+}
+
+func renderTasks(context *gin.Context, status int, data webui.TasksData) {
+	context.Header("Content-Type", "text/html; charset=utf-8")
+	context.Status(status)
+	if err := webui.RenderTasks(context.Writer, data); err != nil {
+		_ = context.Error(err)
+	}
+}
+
+func renderLogin(context *gin.Context, status int, csrfToken, returnPath, username, message string) {
+	context.Header("Content-Type", "text/html; charset=utf-8")
+	context.Status(status)
+	if err := webui.RenderLogin(context.Writer, webui.LoginData{
+		CSRFToken: csrfToken,
+		ReturnTo:  returnPath,
+		Username:  username,
+		Error:     message,
+	}); err != nil {
+		_ = context.Error(err)
+	}
+}
+
+func parseForm(context *gin.Context) bool {
+	context.Request.Body = http.MaxBytesReader(context.Writer, context.Request.Body, maxFormBytes)
+	if err := context.Request.ParseForm(); err != nil {
+		var tooLarge *http.MaxBytesError
+		if errors.As(err, &tooLarge) {
+			context.Status(http.StatusRequestEntityTooLarge)
+		} else {
+			context.Status(http.StatusBadRequest)
+		}
+		return false
+	}
+	return true
+}
+
+func firstError(validation tasks.Errors) string {
+	for _, field := range []string{"title", "product_url", "sku_color", "sku_size", "quantity", "max_total_price"} {
+		if _, ok := validation[field]; ok {
+			return field
+		}
+	}
+	return "title"
+}
+
+func returnTo(value string) string {
+	if value == "/tasks" || strings.HasPrefix(value, "/tasks/") || strings.HasPrefix(value, "/tasks?") {
+		if strings.Contains(value, "\\") || strings.Contains(value, "%") || strings.HasPrefix(value, "//") {
+			return "/tasks"
+		}
+		parsed, err := url.ParseRequestURI(value)
+		if err == nil && parsed.IsAbs() == false && parsed.Host == "" && hasSafeTaskPath(parsed.Path) {
+			return value
+		}
+	}
+
+	return "/tasks"
+}
+
+func hasSafeTaskPath(path string) bool {
+	for _, segment := range strings.Split(path, "/") {
+		if segment == "." || segment == ".." {
+			return false
+		}
+	}
+	return true
 }

admin/internal/server/router_test.go

@@ -1,28 +1,637 @@
 package server_test
 
 import (
+	"context"
+	"io"
 	"net/http"
 	"net/http/httptest"
+	"net/url"
+	"regexp"
+	"strings"
 	"testing"
+	"time"
 
+	"cmbuyer/admin/internal/auth"
+	"cmbuyer/admin/internal/deviceauth"
+	"cmbuyer/admin/internal/evidence"
 	"cmbuyer/admin/internal/server"
+	"cmbuyer/admin/internal/taskdetail"
+	"cmbuyer/admin/internal/tasks"
+
+	"github.com/gin-gonic/gin"
+	"golang.org/x/crypto/bcrypt"
 )
 
-func TestHealthz(t *testing.T) {
+var csrfPattern = regexp.MustCompile(`name="csrf_token" value="([^"]+)"`)
+var createKeyPattern = regexp.MustCompile(`name="create_key" value="([^"]+)"`)
+
+func TestHealthzIsPublic(t *testing.T) {
+	router, _ := newRouter(t)
 	request := httptest.NewRequest(http.MethodGet, "/healthz", nil)
 	response := httptest.NewRecorder()
 
-	server.NewRouter().ServeHTTP(response, request)
+	router.ServeHTTP(response, request)
 
 	if response.Code != http.StatusOK {
 		t.Fatalf("healthz status = %d, want %d", response.Code, http.StatusOK)
 	}
-
 	if contentType := response.Header().Get("Content-Type"); contentType != "application/json; charset=utf-8" {
 		t.Fatalf("healthz content type = %q, want application/json; charset=utf-8", contentType)
 	}
-
 	if body := response.Body.String(); body != "{\"status\":\"ok\"}" {
 		t.Fatalf("healthz body = %q, want {\"status\":\"ok\"}", body)
 	}
+	assertSecurityHeaders(t, response)
+}
+
+func TestTasksRequiresLoginAndBlocksOpenRedirects(t *testing.T) {
+	router, _ := newRouter(t)
+
+	tasks := serve(router, http.MethodGet, "/tasks", nil, nil)
+	if tasks.Code != http.StatusSeeOther {
+		t.Fatalf("GET /tasks status = %d, want %d", tasks.Code, http.StatusSeeOther)
+	}
+	if location := tasks.Header().Get("Location"); location != "/login?return_to=%2Ftasks" {
+		t.Fatalf("GET /tasks location = %q, want login return path", location)
+	}
+
+	for _, target := range []string{"https://example.invalid", "//example.invalid", `\\example.invalid`, "/other", "/tasks/..", "/tasks/../other", "/tasks/%2e%2e", "%2F%2Fevil.invalid", "%252F%252Fevil.invalid"} {
+		response := serve(router, http.MethodGet, "/login?return_to="+url.QueryEscape(target), nil, nil)
+		if response.Code != http.StatusOK {
+			t.Fatalf("GET /login return_to=%q status = %d, want 200", target, response.Code)
+		}
+		if strings.Contains(response.Body.String(), target) || !strings.Contains(response.Body.String(), `name="return_to" value="/tasks"`) {
+			t.Fatalf("GET /login accepted unsafe return_to %q", target)
+		}
+	}
+
+	encodedPath := serve(router, http.MethodGet, "/login?return_to=%2Ftasks%252F..", nil, nil)
+	if !strings.Contains(encodedPath.Body.String(), `name="return_to" value="/tasks"`) {
+		t.Fatal("encoded parent path was accepted as return_to")
+	}
+	encodedQuery := serve(router, http.MethodGet, "/login?return_to=%2Ftasks%3Fnext%3D%252Ftasks%252F..", nil, nil)
+	if !strings.Contains(encodedQuery.Body.String(), `name="return_to" value="/tasks"`) {
+		t.Fatal("encoded query bypass was accepted as return_to")
+	}
+}
+
+func TestLoginRotatesSessionAndCSRF(t *testing.T) {
+	router, _ := newRouter(t)
+	initial := serve(router, http.MethodGet, "/login?return_to=%2Ftasks%3Fview%3Dmine", nil, nil)
+	oldCookie := sessionCookie(t, initial)
+	oldCSRF := csrfToken(t, initial.Body.String())
+
+	login := serve(router, http.MethodPost, "/login", url.Values{
+		"csrf_token": {oldCSRF},
+		"return_to":  {"/tasks?view=mine"},
+		"username":   {"admin"},
+		"password":   {"test-password"},
+	}, oldCookie)
+	if login.Code != http.StatusSeeOther || login.Header().Get("Location") != "/tasks?view=mine" {
+		t.Fatalf("successful login = (%d, %q), want 303 /tasks?view=mine", login.Code, login.Header().Get("Location"))
+	}
+	newCookie := sessionCookie(t, login)
+	if newCookie.Value == oldCookie.Value {
+		t.Fatal("successful login reused the anonymous session cookie")
+	}
+
+	tasks := serve(router, http.MethodGet, "/tasks", nil, newCookie)
+	if tasks.Code != http.StatusOK {
+		t.Fatalf("GET /tasks after login status = %d, want 200", tasks.Code)
+	}
+	if newCSRF := csrfToken(t, tasks.Body.String()); newCSRF == oldCSRF {
+		t.Fatal("successful login reused the anonymous CSRF token")
+	}
+	for _, forbidden := range []string{"建单", "试选", "拼多多", "规格", "单价", "证据"} {
+		if strings.Contains(tasks.Body.String(), forbidden) {
+			t.Fatalf("task shell must not expose deferred feature content %q", forbidden)
+		}
+	}
+	assertSecurityHeaders(t, initial)
+	assertSecurityHeaders(t, tasks)
+}
+
+func TestLoginPageIncludesAccessibleFormBasics(t *testing.T) {
+	router, _ := newRouter(t)
+	page := serve(router, http.MethodGet, "/login", nil, nil)
+	body := page.Body.String()
+	for _, want := range []string{
+		`<label for="username">`,
+		`<label for="password">`,
+		`autocomplete="username"`,
+		`autocomplete="current-password"`,
+		`min-height:44px`,
+		`:focus-visible`,
+		`prefers-reduced-motion`,
+	} {
+		if !strings.Contains(body, want) {
+			t.Fatalf("login page is missing %q", want)
+		}
+	}
+	if strings.Contains(body, "http://") || strings.Contains(body, "https://") || strings.Contains(body, "<script") {
+		t.Fatal("login page must not load external resources or require client-side JavaScript")
+	}
+
+	failure := serve(router, http.MethodPost, "/login", url.Values{
+		"csrf_token": {csrfToken(t, body)},
+		"username":   {"admin"},
+		"password":   {"wrong"},
+	}, sessionCookie(t, page))
+	if !strings.Contains(failure.Body.String(), `role="alert"`) {
+		t.Fatal("login failure must announce its error")
+	}
+}
+
+func TestLoginCSRFAndCredentialFailuresAreSafe(t *testing.T) {
+	router, _ := newRouter(t)
+	page := serve(router, http.MethodGet, "/login", nil, nil)
+	cookie := sessionCookie(t, page)
+
+	withoutCSRF := serve(router, http.MethodPost, "/login", url.Values{
+		"username": {"admin"},
+		"password": {"test-password"},
+	}, cookie)
+	if withoutCSRF.Code != http.StatusForbidden || !strings.Contains(withoutCSRF.Body.String(), "请求已过期") {
+		t.Fatalf("login without CSRF = (%d, %q), want rejected form", withoutCSRF.Code, withoutCSRF.Body.String())
+	}
+
+	page = serve(router, http.MethodGet, "/login", nil, cookie)
+	badCredentials := serve(router, http.MethodPost, "/login", url.Values{
+		"csrf_token": {csrfToken(t, page.Body.String())},
+		"username":   {"unknown"},
+		"password":   {"wrong"},
+	}, cookie)
+	if badCredentials.Code != http.StatusUnauthorized {
+		t.Fatalf("login with invalid credentials status = %d, want 401", badCredentials.Code)
+	}
+	if body := badCredentials.Body.String(); !strings.Contains(body, "账号或密码不正确") || strings.Contains(body, "unknown") {
+		t.Fatalf("invalid login leaked account detail: %q", body)
+	}
+}
+
+func TestTamperedCookieCannotAccessTasks(t *testing.T) {
+	router, _ := newRouter(t)
+	page := serve(router, http.MethodGet, "/login", nil, nil)
+	cookie := sessionCookie(t, page)
+
+	tampered := *cookie
+	tampered.Value = flipCookieValue(t, cookie.Value)
+	response := serve(router, http.MethodGet, "/tasks", nil, &tampered)
+	if response.Code != http.StatusSeeOther {
+		t.Fatalf("tampered cookie status = %d, want 303", response.Code)
+	}
+
+}
+
+func TestTaskCreationRendersSharedFormsAndPersistsOnlyDraft(t *testing.T) {
+	router, _ := newRouter(t)
+	cookie := authenticate(t, router)
+
+	modal := serve(router, http.MethodGet, "/tasks?create=1", nil, cookie)
+	if modal.Code != http.StatusOK {
+		t.Fatalf("GET dialog form status = %d, want 200", modal.Code)
+	}
+	fullPage := serve(router, http.MethodGet, "/tasks/new", nil, cookie)
+	if fullPage.Code != http.StatusOK {
+		t.Fatalf("GET full form status = %d, want 200", fullPage.Code)
+	}
+	for _, want := range []string{`<div class="modal-scrim"`, `<dialog open`, `aria-modal="true"`, `name="title"`, `name="product_url"`, `name="sku_color"`, `name="sku_size"`, `name="quantity"`, `name="max_total_price"`, `type="url" inputmode="url" maxlength="2048"`, `type="number" inputmode="numeric" min="1" step="1"`, `inputmode="decimal" pattern="[0-9]+(\.[0-9]{1,2})?"`, `maxlength="120"`, `maxlength="80"`, `required`, `autofocus`, `导入</button><a class="button primary"`, `type="search"`, `data-start-purchases`, `data-select-all`, `最高总额`, `min-height:44px`, `:focus-visible`, `overflow-x:auto`, `prefers-reduced-motion`} {
+		if !strings.Contains(modal.Body.String(), want) {
+			t.Fatalf("dialog form is missing %q", want)
+		}
+	}
+	for _, want := range []string{`name="title"`, `name="product_url"`, `name="sku_color"`, `name="sku_size"`, `name="quantity"`, `name="max_total_price"`, `name="form_mode" value="full"`} {
+		if !strings.Contains(fullPage.Body.String(), want) {
+			t.Fatalf("full-page form is missing %q", want)
+		}
+	}
+
+	invalid := serve(router, http.MethodPost, "/tasks", url.Values{
+		"csrf_token":      {csrfToken(t, modal.Body.String())},
+		"create_key":      {createKey(t, modal.Body.String())},
+		"title":           {`<script>alert(1)</script>`},
+		"product_url":     {"https://mobile.yangkeduo.com/goods.html?goods_id=937122477375&uin=discard"},
+		"sku_color":       {"black"},
+		"sku_size":        {"M"},
+		"quantity":        {"0"},
+		"max_total_price": {"12.80"},
+		"form_mode":       {"dialog"},
+	}, cookie)
+	if invalid.Code != http.StatusBadRequest || !strings.Contains(invalid.Body.String(), `<dialog open`) || !strings.Contains(invalid.Body.String(), "数量必须是正整数") || !strings.Contains(invalid.Body.String(), `role="alert"`) || !strings.Contains(invalid.Body.String(), `href="#quantity"`) || !strings.Contains(invalid.Body.String(), `aria-describedby="quantity-error"`) || !strings.Contains(invalid.Body.String(), `autofocus`) {
+		t.Fatalf("invalid create = (%d, %q), want dialog validation response", invalid.Code, invalid.Body.String())
+	}
+	if strings.Contains(invalid.Body.String(), `<script>alert(1)</script>`) || !strings.Contains(invalid.Body.String(), `&lt;script&gt;alert(1)&lt;/script&gt;`) {
+		t.Fatalf("invalid create did not safely preserve title: %q", invalid.Body.String())
+	}
+	if strings.Contains(invalid.Body.String(), "uin=discard") || !strings.Contains(invalid.Body.String(), `value="https://mobile.yangkeduo.com/goods.html?goods_id=937122477375"`) {
+		t.Fatalf("invalid create did not canonicalize product URL: %q", invalid.Body.String())
+	}
+
+	createPage := serve(router, http.MethodGet, "/tasks?create=1", nil, cookie)
+	key := createKey(t, createPage.Body.String())
+	created := serve(router, http.MethodPost, "/tasks", url.Values{
+		"csrf_token":      {csrfToken(t, createPage.Body.String())},
+		"create_key":      {key},
+		"title":           {"<b>夏季上衣</b>"},
+		"product_url":     {"https://mobile.yangkeduo.com/goods.html?goods_id=937122477375&utm_source=discard"},
+		"sku_color":       {"black"},
+		"sku_size":        {"M"},
+		"quantity":        {"2"},
+		"max_total_price": {"12.8"},
+		"form_mode":       {"dialog"},
+	}, cookie)
+	if created.Code != http.StatusSeeOther || !strings.HasPrefix(created.Header().Get("Location"), "/tasks?created=") {
+		t.Fatalf("valid create = (%d, %q), want 303 to a created-task acknowledgement", created.Code, created.Header().Get("Location"))
+	}
+	replay := serve(router, http.MethodPost, "/tasks", url.Values{
+		"csrf_token":      {csrfToken(t, createPage.Body.String())},
+		"create_key":      {key},
+		"title":           {"<b>夏季上衣</b>"},
+		"product_url":     {"https://mobile.yangkeduo.com/goods.html?goods_id=937122477375&utm_source=discard"},
+		"sku_color":       {"black"},
+		"sku_size":        {"M"},
+		"quantity":        {"2"},
+		"max_total_price": {"12.8"},
+		"form_mode":       {"dialog"},
+	}, cookie)
+	if replay.Code != http.StatusSeeOther {
+		t.Fatalf("idempotent replay status = %d, want 303", replay.Code)
+	}
+	conflict := serve(router, http.MethodPost, "/tasks", url.Values{
+		"csrf_token":      {csrfToken(t, createPage.Body.String())},
+		"create_key":      {key},
+		"title":           {"different task"},
+		"product_url":     {"https://mobile.yangkeduo.com/goods.html?goods_id=937122477375"},
+		"sku_color":       {"black"},
+		"sku_size":        {"M"},
+		"quantity":        {"2"},
+		"max_total_price": {"12.80"},
+		"form_mode":       {"dialog"},
+	}, cookie)
+	if conflict.Code != http.StatusConflict || !strings.Contains(conflict.Body.String(), "该创建请求已用于另一条任务") {
+		t.Fatalf("conflicting create = (%d, %q), want a 409 form error", conflict.Code, conflict.Body.String())
+	}
+
+	list := serve(router, http.MethodGet, created.Header().Get("Location"), nil, cookie)
+	if list.Code != http.StatusOK {
+		t.Fatalf("GET /tasks status = %d, want 200", list.Code)
+	}
+	body := list.Body.String()
+	for _, want := range []string{`任务已创建，已显示在列表首行。`, `&lt;b&gt;夏季上衣&lt;/b&gt;`, `https://mobile.yangkeduo.com/goods.html?goods_id=937122477375`, `target="_blank"`, `rel="noopener noreferrer"`, `¥12.80`, `待开始`, `选择全部任务`, `选择任务`} {
+		if !strings.Contains(body, want) {
+			t.Fatalf("task list is missing %q", want)
+		}
+	}
+	for _, forbidden := range []string{"utm_source", "试选", "订单确认", "真机", "提交订单"} {
+		if strings.Contains(body, forbidden) {
+			t.Fatalf("task list exposed deferred scope %q", forbidden)
+		}
+	}
+}
+
+func TestTasksPageKeepsOriginalShellAndRendersFilteredWorkbench(t *testing.T) {
+	store := &memoryStore{rows: []tasks.TaskRow{
+		{ID: "b3c9f507-7473-4fa6-8d71-8786c34c6301", Title: "待开始衬衫", GoodsID: "937122477375", SKUColor: "黑色", SKUSize: "M", Quantity: 2, MaxTotalPrice: "12.80", Status: "DRAFT", Version: 3, CreatedAt: time.Date(2026, 8, 4, 1, 2, 3, 0, time.UTC)},
+		{ID: "c3c9f507-7473-4fa6-8d71-8786c34c6301", Title: "等待领取衬衫", GoodsID: "958756616606", SKUColor: "白色", SKUSize: "L", Quantity: 1, MaxTotalPrice: "20.00", Status: "PENDING", Version: 4, CreatedAt: time.Date(2026, 8, 4, 2, 3, 4, 0, time.UTC)},
+	}}
+	router, _ := newRouterWithStore(t, store)
+	cookie := authenticate(t, router)
+	query := url.Values{"keyword": {"衬衫"}, "created_from": {"2026-08-04"}, "created_to": {"2026-08-04"}}
+	response := serve(router, http.MethodGet, "/tasks?"+query.Encode(), nil, cookie)
+	if response.Code != http.StatusOK {
+		t.Fatalf("filtered tasks status = %d, want 200", response.Code)
+	}
+	body := response.Body.String()
+	for _, want := range []string{
+		`<a class="skip" href="#main">`,
+		`:focus-visible`,
+		`min-height:44px`,
+		`@media(max-width:420px)`,
+		`prefers-reduced-motion`,
+		`<button class="button" type="button" disabled>导入</button><a class="button primary" href="/tasks?create=1">创建任务</a>`,
+		`name="keyword" type="search" value="衬衫"`,
+		`name="created_from" type="date" value="2026-08-04"`,
+		`name="created_to" type="date" value="2026-08-04"`,
+		`data-start-purchases`,
+		`data-selection-summary aria-live="polite"`,
+		`系统不会付款`,
+		`开始采购（只创建待付款订单）`,
+		`采购结果`,
+		`创建时间（上海）`,
+		`https://mobile.yangkeduo.com/goods.html?goods_id=937122477375`,
+		`target="_blank" rel="noopener noreferrer"`,
+		`data-task-row data-detail-url="/tasks/b3c9f507-7473-4fa6-8d71-8786c34c6301" tabindex="0"`,
+		`data-open-detail>查看详情</button>`,
+		`.detail-link-button{display:block;min-height:44px`,
+		`data-detail-drawer aria-modal="true"`,
+		`待开始`,
+		`已授权待领取`,
+		`datetime="2026-08-04T09:02:03&#43;08:00">2026-08-04 09:02`,
+		`<script src="/static/tasks.js" defer></script>`,
+	} {
+		if !strings.Contains(body, want) {
+			t.Fatalf("workbench is missing %q", want)
+		}
+	}
+	if strings.Index(body, `name="keyword"`) > strings.Index(body, `data-start-purchases`) || strings.Index(body, `data-start-purchases`) > strings.Index(body, `<div class="table-wrap">`) {
+		t.Fatal("workbench rows are not ordered as toolbar, filters, batch actions, table")
+	}
+	if count := strings.Count(body, `data-task-id=`); count != 1 {
+		t.Fatalf("selectable row count = %d, want only the DRAFT row", count)
+	}
+	for _, forbidden := range []string{`<th scope="col">操作</th>`, `确认开始采购`, `确认机器选对了吗`} {
+		if strings.Contains(body, forbidden) {
+			t.Fatalf("workbench exposed forbidden per-row or confirmation UI %q", forbidden)
+		}
+	}
+	if store.listTasksCalls != 1 || store.listDraftsCalls != 0 {
+		t.Fatalf("GET /tasks calls = (ListTasks %d, ListDrafts %d), want (1, 0)", store.listTasksCalls, store.listDraftsCalls)
+	}
+}
+
+func TestTasksPageRerendersAccessibleFilterErrorsAndKeepsValues(t *testing.T) {
+	store := &memoryStore{}
+	router, _ := newRouterWithStore(t, store)
+	cookie := authenticate(t, router)
+	query := url.Values{
+		"keyword":      {`保留%_\`},
+		"status":       {"UNKNOWN"},
+		"created_from": {"2026-02-30"},
+		"created_to":   {"not-a-date"},
+	}
+	response := serve(router, http.MethodGet, "/tasks?"+query.Encode(), nil, cookie)
+	if response.Code != http.StatusBadRequest {
+		t.Fatalf("invalid filter status = %d, want 400", response.Code)
+	}
+	body := response.Body.String()
+	for _, want := range []string{
+		`role="alert" aria-live="assertive"`,
+		`href="#filter-status"`,
+		`href="#filter-created-from"`,
+		`href="#filter-created-to"`,
+		`name="keyword" type="search" value="保留%_\"`,
+		`<option value="UNKNOWN" selected>无效状态：UNKNOWN</option>`,
+		`name="created_from" type="date" value="2026-02-30" aria-invalid="true" aria-describedby="filter-created-from-error"`,
+		`name="created_to" type="date" value="not-a-date" aria-invalid="true" aria-describedby="filter-created-to-error"`,
+		`id="filter-status-error"`,
+		`id="filter-created-from-error"`,
+		`id="filter-created-to-error"`,
+		`筛选条件有误`,
+	} {
+		if !strings.Contains(body, want) {
+			t.Fatalf("invalid filter page is missing %q", want)
+		}
+	}
+	if store.listTasksCalls != 0 || store.listDraftsCalls != 0 {
+		t.Fatalf("invalid filter queried stores: ListTasks=%d ListDrafts=%d", store.listTasksCalls, store.listDraftsCalls)
+	}
+	assertSecurityHeaders(t, response)
+}
+
+func TestTaskCreationRequiresAuthenticationAndCSRF(t *testing.T) {
+	router, _ := newRouter(t)
+	if response := serve(router, http.MethodPost, "/tasks", url.Values{}, nil); response.Code != http.StatusUnauthorized {
+		t.Fatalf("anonymous POST /tasks = %d, want 401", response.Code)
+	}
+	cookie := authenticate(t, router)
+	if response := serve(router, http.MethodPost, "/tasks", url.Values{}, cookie); response.Code != http.StatusForbidden {
+		t.Fatalf("POST /tasks without CSRF = %d, want 403", response.Code)
+	}
+}
+
+func TestTaskCreationFailsClosedForMalformedOrOversizedForms(t *testing.T) {
+	router, _ := newRouter(t)
+	cookie := authenticate(t, router)
+	page := serve(router, http.MethodGet, "/tasks?create=1", nil, cookie)
+	base := url.Values{
+		"csrf_token":      {csrfToken(t, page.Body.String())},
+		"create_key":      {createKey(t, page.Body.String())},
+		"title":           {"title"},
+		"product_url":     {"https://mobile.yangkeduo.com/goods.html?goods_id=1;uin=malformed"},
+		"sku_color":       {"black"},
+		"sku_size":        {"M"},
+		"quantity":        {"1"},
+		"max_total_price": {"1.00"},
+		"form_mode":       {"dialog"},
+	}
+	malformed := serve(router, http.MethodPost, "/tasks", base, cookie)
+	if malformed.Code != http.StatusBadRequest || !strings.Contains(malformed.Body.String(), "canonical 商品链接") {
+		t.Fatalf("malformed URL create = (%d, %q), want validation failure", malformed.Code, malformed.Body.String())
+	}
+
+	oversized := url.Values{"csrf_token": {csrfToken(t, page.Body.String())}, "title": {strings.Repeat("x", 9<<10)}}
+	if response := serve(router, http.MethodPost, "/tasks", oversized, cookie); response.Code != http.StatusRequestEntityTooLarge {
+		t.Fatalf("oversized form status = %d, want 413", response.Code)
+	}
+}
+
+func assertSecurityHeaders(t *testing.T, response *httptest.ResponseRecorder) {
+	t.Helper()
+	want := map[string]string{
+		"Cache-Control":           "no-store",
+		"X-Content-Type-Options":  "nosniff",
+		"Referrer-Policy":         "no-referrer",
+		"Content-Security-Policy": "default-src 'self'; style-src 'self' 'unsafe-inline'; script-src 'self'; object-src 'none'; base-uri 'none'; frame-ancestors 'none'; form-action 'self'",
+	}
+	for name, expected := range want {
+		if got := response.Header().Get(name); got != expected {
+			t.Fatalf("%s = %q, want %q", name, got, expected)
+		}
+	}
+}
+
+func flipCookieValue(t *testing.T, value string) string {
+	t.Helper()
+	if value == "" {
+		t.Fatal("cannot tamper with an empty cookie")
+	}
+	if value[0] == 'A' {
+		return "B" + value[1:]
+	}
+	return "A" + value[1:]
+}
+
+func TestLogoutRequiresCSRFAndRevokesSession(t *testing.T) {
+	router, _ := newRouter(t)
+	loginPage := serve(router, http.MethodGet, "/login", nil, nil)
+	loginCookie := sessionCookie(t, loginPage)
+	login := serve(router, http.MethodPost, "/login", url.Values{
+		"csrf_token": {csrfToken(t, loginPage.Body.String())},
+		"username":   {"admin"},
+		"password":   {"test-password"},
+	}, loginCookie)
+	authenticatedCookie := sessionCookie(t, login)
+
+	missingCSRF := serve(router, http.MethodPost, "/logout", url.Values{}, authenticatedCookie)
+	if missingCSRF.Code != http.StatusForbidden {
+		t.Fatalf("logout without CSRF status = %d, want 403", missingCSRF.Code)
+	}
+
+	tasks := serve(router, http.MethodGet, "/tasks", nil, authenticatedCookie)
+	logout := serve(router, http.MethodPost, "/logout", url.Values{
+		"csrf_token": {csrfToken(t, tasks.Body.String())},
+	}, authenticatedCookie)
+	if logout.Code != http.StatusSeeOther || logout.Header().Get("Location") != "/login" {
+		t.Fatalf("logout = (%d, %q), want 303 /login", logout.Code, logout.Header().Get("Location"))
+	}
+	if cookie := sessionCookie(t, logout); cookie.MaxAge >= 0 {
+		t.Fatalf("logout cookie MaxAge = %d, want a deletion cookie", cookie.MaxAge)
+	}
+
+	reused := serve(router, http.MethodGet, "/tasks", nil, authenticatedCookie)
+	if reused.Code != http.StatusSeeOther {
+		t.Fatalf("revoked session status = %d, want 303", reused.Code)
+	}
+}
+
+func newRouter(t *testing.T) (*gin.Engine, *auth.Manager) {
+	return newRouterWithStore(t, &memoryStore{})
+}
+
+func newRouterWithStore(t *testing.T, store tasks.Store) (*gin.Engine, *auth.Manager) {
+	return newRouterWithDependencies(t, store, emptyDetailStore{}, emptyEvidenceStore{}, deviceauth.RejectAllAuthenticator{})
+}
+
+func newRouterWithDependencies(t *testing.T, store tasks.Store, details taskdetail.Store, evidenceStore evidence.Store, deviceAuthenticator deviceauth.Authenticator) (*gin.Engine, *auth.Manager) {
+	t.Helper()
+	gin.SetMode(gin.TestMode)
+	hash, err := bcrypt.GenerateFromPassword([]byte("test-password"), bcrypt.MinCost)
+	if err != nil {
+		t.Fatalf("generate bcrypt hash: %v", err)
+	}
+	manager := auth.NewManager([]byte(strings.Repeat("s", 32)), false)
+	router, err := server.NewRouter(server.Options{
+		AdminUsername:       "admin",
+		AdminPasswordBcrypt: string(hash),
+		Sessions:            manager,
+		Tasks:               store,
+		TaskDetails:         details,
+		Evidence:            evidenceStore,
+		DeviceAuthenticator: deviceAuthenticator,
+	})
+	if err != nil {
+		t.Fatalf("NewRouter: %v", err)
+	}
+	return router, manager
+}
+
+type emptyDetailStore struct{}
+
+func (emptyDetailStore) Get(context.Context, string) (taskdetail.Detail, error) {
+	return taskdetail.Detail{}, taskdetail.ErrNotFound
+}
+
+type emptyEvidenceStore struct{}
+
+func (emptyEvidenceStore) Stage(io.Reader, string) (evidence.StagedFile, error) {
+	return evidence.StagedFile{}, evidence.ErrInvalid
+}
+func (emptyEvidenceStore) Discard(evidence.StagedFile) {}
+func (emptyEvidenceStore) Commit(context.Context, deviceauth.Principal, evidence.UploadMetadata, evidence.StagedFile) (evidence.Asset, bool, error) {
+	return evidence.Asset{}, false, evidence.ErrInvalid
+}
+func (emptyEvidenceStore) Open(context.Context, string) (evidence.Asset, io.ReadSeekCloser, error) {
+	return evidence.Asset{}, nil, evidence.ErrNotFound
+}
+
+type memoryStore struct {
+	drafts          []tasks.Draft
+	rows            []tasks.TaskRow
+	listDraftsCalls int
+	listTasksCalls  int
+	startCalls      int
+}
+
+func (store *memoryStore) CreateDraft(_ context.Context, draft tasks.Draft) (tasks.Draft, error) {
+	for _, existing := range store.drafts {
+		if existing.ID == draft.ID {
+			if existing.Title != draft.Title || existing.GoodsID != draft.GoodsID || existing.SKUColor != draft.SKUColor || existing.SKUSize != draft.SKUSize || existing.Quantity != draft.Quantity || existing.MaxTotalPrice != draft.MaxTotalPrice {
+				return tasks.Draft{}, tasks.ErrCreateKeyConflict
+			}
+			return existing, nil
+		}
+	}
+	store.drafts = append(store.drafts, draft)
+	return draft, nil
+}
+func (store *memoryStore) ListDrafts(_ context.Context) ([]tasks.Draft, error) {
+	store.listDraftsCalls++
+	return append([]tasks.Draft(nil), store.drafts...), nil
+}
+func (store *memoryStore) ListTasks(_ context.Context, _ tasks.TaskFilter) ([]tasks.TaskRow, error) {
+	store.listTasksCalls++
+	if store.rows != nil {
+		return append([]tasks.TaskRow(nil), store.rows...), nil
+	}
+	result := make([]tasks.TaskRow, 0, len(store.drafts))
+	for _, draft := range store.drafts {
+		result = append(result, tasks.TaskRow{ID: draft.ID, Title: draft.Title, GoodsID: draft.GoodsID, SKUColor: draft.SKUColor, SKUSize: draft.SKUSize, Quantity: draft.Quantity, MaxTotalPrice: draft.MaxTotalPrice, Status: "DRAFT", Version: 1, CreatedAt: draft.CreatedAt})
+	}
+	return result, nil
+}
+func (store *memoryStore) StartPurchases(_ context.Context, _ tasks.StartCommand, _ string) (tasks.StartResult, error) {
+	store.startCalls++
+	return tasks.StartResult{}, tasks.ErrInvalidStart
+}
+
+func serve(router http.Handler, method, target string, form url.Values, cookie *http.Cookie) *httptest.ResponseRecorder {
+	var body *strings.Reader
+	if form == nil {
+		body = strings.NewReader("")
+	} else {
+		body = strings.NewReader(form.Encode())
+	}
+	request := httptest.NewRequest(method, target, body)
+	if form != nil {
+		request.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	}
+	if cookie != nil {
+		request.AddCookie(cookie)
+	}
+	response := httptest.NewRecorder()
+	router.ServeHTTP(response, request)
+	return response
+}
+
+func sessionCookie(t *testing.T, response *httptest.ResponseRecorder) *http.Cookie {
+	t.Helper()
+	for _, cookie := range response.Result().Cookies() {
+		if cookie.Name == auth.CookieName {
+			return cookie
+		}
+	}
+	t.Fatalf("response did not set %s cookie", auth.CookieName)
+	return nil
+}
+
+func csrfToken(t *testing.T, body string) string {
+	t.Helper()
+	matches := csrfPattern.FindStringSubmatch(body)
+	if len(matches) != 2 || matches[1] == "" {
+		t.Fatalf("no CSRF token in response body: %q", body)
+	}
+	return matches[1]
+}
+
+func createKey(t *testing.T, body string) string {
+	t.Helper()
+	matches := createKeyPattern.FindStringSubmatch(body)
+	if len(matches) != 2 || matches[1] == "" {
+		t.Fatalf("no create key in response body: %q", body)
+	}
+	return matches[1]
+}
+
+func authenticate(t *testing.T, router http.Handler) *http.Cookie {
+	t.Helper()
+	page := serve(router, http.MethodGet, "/login", nil, nil)
+	login := serve(router, http.MethodPost, "/login", url.Values{
+		"csrf_token": {csrfToken(t, page.Body.String())},
+		"username":   {"admin"},
+		"password":   {"test-password"},
+	}, sessionCookie(t, page))
+	if login.Code != http.StatusSeeOther {
+		t.Fatalf("authenticate status = %d, want 303", login.Code)
+	}
+	return sessionCookie(t, login)
 }

admin/internal/server/start_purchases_test.go

@@ -0,0 +1,328 @@
+package server_test
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"cmbuyer/admin/internal/tasks"
+)
+
+const (
+	startKeyForHTTP = "c3c9f507-7473-4fa6-8d71-8786c34c6301"
+	taskIDForHTTP   = "a3c9f507-7473-4fa6-8d71-8786c34c6301"
+)
+
+func TestStartPurchasesAuthenticatesBeforeInspectingRequestBody(t *testing.T) {
+	store := &startRecordingStore{}
+	router, _ := newRouterWithStore(t, store)
+	hugeMalformed := `{"start_key":"` + strings.Repeat("x", 70<<10)
+
+	for name, request := range map[string]*http.Request{
+		"anonymous malformed": newStartRequest(t, hugeMalformed, "text/plain", "", nil),
+		"device bearer":       newStartRequest(t, validStartBody(), "application/json", "", nil),
+	} {
+		t.Run(name, func(t *testing.T) {
+			if name == "device bearer" {
+				request.Header.Set("Authorization", "Bearer device-token")
+			}
+			response := httptest.NewRecorder()
+			router.ServeHTTP(response, request)
+			if response.Code != http.StatusUnauthorized {
+				t.Fatalf("status = %d, want 401", response.Code)
+			}
+		})
+	}
+
+	cookie, csrf := authenticatedStartSession(t, router)
+	for name, token := range map[string]string{"missing CSRF": "", "wrong CSRF": "wrong-csrf"} {
+		request := newStartRequest(t, hugeMalformed, "text/plain", token, cookie)
+		response := httptest.NewRecorder()
+		router.ServeHTTP(response, request)
+		if response.Code != http.StatusForbidden {
+			t.Fatalf("%s status = %d, want 403", name, response.Code)
+		}
+	}
+	if csrf == "" {
+		t.Fatal("authenticated page did not contain a CSRF token")
+	}
+	if store.startCalls != 0 {
+		t.Fatalf("unauthorized requests called store %d times", store.startCalls)
+	}
+}
+
+func TestStartPurchasesRejectsInvalidUTF8BeforeJSONDecoding(t *testing.T) {
+	validPrefix := []byte(`{"start_key":"` + startKeyForHTTP + `","tasks":[],"start_key":"`)
+	duplicateKeyBypass := append(append([]byte(nil), validPrefix...), 0xff)
+	duplicateKeyBypass = append(duplicateKeyBypass, []byte(`"}`)...)
+	invalidWhitespace := append([]byte(validStartBody()), 0xfe)
+
+	for name, body := range map[string][]byte{
+		"invalid byte after JSON":     invalidWhitespace,
+		"invalid duplicate-key value": duplicateKeyBypass,
+	} {
+		t.Run(name, func(t *testing.T) {
+			store := &startRecordingStore{}
+			router, _ := newRouterWithStore(t, store)
+			cookie, csrf := authenticatedStartSession(t, router)
+			response := serveStartBytes(t, router, body, "application/json", csrf, cookie)
+			if response.Code != http.StatusBadRequest || store.startCalls != 0 {
+				t.Fatalf("status/calls = %d/%d, want 400/0", response.Code, store.startCalls)
+			}
+			if response.Body.Len() != 0 {
+				t.Fatalf("invalid UTF-8 response leaked body %q", response.Body.String())
+			}
+		})
+	}
+}
+
+func TestStartPurchasesEnforcesExact64KiBBodyBoundary(t *testing.T) {
+	const limit = 64 << 10
+	base := validStartBody()
+	for name, test := range map[string]struct {
+		body      string
+		want      int
+		wantCalls int
+	}{
+		"exact limit": {body: base + strings.Repeat(" ", limit-len(base)), want: http.StatusOK, wantCalls: 1},
+		"one over":    {body: base + strings.Repeat(" ", limit-len(base)+1), want: http.StatusRequestEntityTooLarge},
+	} {
+		t.Run(name, func(t *testing.T) {
+			store := &startRecordingStore{startResult: successfulStartResult()}
+			router, _ := newRouterWithStore(t, store)
+			cookie, csrf := authenticatedStartSession(t, router)
+			response := serveStartRequest(t, router, test.body, "application/json", csrf, cookie)
+			if response.Code != test.want || store.startCalls != test.wantCalls {
+				t.Fatalf("status/calls = %d/%d, want %d/%d", response.Code, store.startCalls, test.want, test.wantCalls)
+			}
+		})
+	}
+}
+
+func TestStartPurchasesContentTypeContract(t *testing.T) {
+	for _, contentType := range []string{
+		"application/json",
+		"application/json; charset=utf-8",
+		"application/json;charset=UTF-8",
+	} {
+		t.Run("accept "+contentType, func(t *testing.T) {
+			store := &startRecordingStore{startResult: successfulStartResult()}
+			router, _ := newRouterWithStore(t, store)
+			cookie, csrf := authenticatedStartSession(t, router)
+			response := serveStartRequest(t, router, validStartBody(), contentType, csrf, cookie)
+			if response.Code != http.StatusOK || store.startCalls != 1 {
+				t.Fatalf("status/calls = %d/%d, want 200/1", response.Code, store.startCalls)
+			}
+		})
+	}
+
+	for _, contentType := range []string{
+		"",
+		"text/plain",
+		"application/json-patch+json",
+		"application/json; charset=gbk",
+		"application/json; profile=unapproved",
+		"application/json; charset",
+	} {
+		t.Run("reject "+contentType, func(t *testing.T) {
+			store := &startRecordingStore{}
+			router, _ := newRouterWithStore(t, store)
+			cookie, csrf := authenticatedStartSession(t, router)
+			response := serveStartRequest(t, router, validStartBody(), contentType, csrf, cookie)
+			if response.Code != http.StatusUnsupportedMediaType || store.startCalls != 0 {
+				t.Fatalf("status/calls = %d/%d, want 415/0", response.Code, store.startCalls)
+			}
+		})
+	}
+}
+
+func TestStartPurchasesRejectsMalformedAndOversizedJSON(t *testing.T) {
+	tests := []struct {
+		name      string
+		body      string
+		want      int
+		storeErr  error
+		wantCalls int
+	}{
+		{name: "empty", body: "", want: http.StatusBadRequest},
+		{name: "empty object", body: `{}`, want: http.StatusBadRequest, storeErr: tasks.ErrInvalidStart, wantCalls: 1},
+		{name: "null object", body: `null`, want: http.StatusBadRequest, storeErr: tasks.ErrInvalidStart, wantCalls: 1},
+		{name: "malformed", body: `{`, want: http.StatusBadRequest},
+		{name: "wrong top-level type", body: `[]`, want: http.StatusBadRequest},
+		{name: "unknown field", body: `{"start_key":"` + startKeyForHTTP + `","tasks":[],"created_by":"attacker"}`, want: http.StatusBadRequest},
+		{name: "wrong field type", body: `{"start_key":"` + startKeyForHTTP + `","tasks":[{"task_id":"` + taskIDForHTTP + `","expected_task_version":"1"}]}`, want: http.StatusBadRequest},
+		{name: "second JSON value", body: validStartBody() + `{}`, want: http.StatusBadRequest},
+		{name: "duplicate task ids", body: `{"start_key":"` + startKeyForHTTP + `","tasks":[{"task_id":"` + taskIDForHTTP + `","expected_task_version":1},{"task_id":"` + taskIDForHTTP + `","expected_task_version":1}]}`, want: http.StatusBadRequest, storeErr: tasks.ErrInvalidStart, wantCalls: 1},
+		{name: "oversized first value", body: `{"start_key":"` + strings.Repeat("x", 70<<10), want: http.StatusRequestEntityTooLarge},
+		{name: "oversized trailing whitespace", body: validStartBody() + strings.Repeat(" ", 70<<10), want: http.StatusRequestEntityTooLarge},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			store := &startRecordingStore{startErr: test.storeErr}
+			router, _ := newRouterWithStore(t, store)
+			cookie, csrf := authenticatedStartSession(t, router)
+			response := serveStartRequest(t, router, test.body, "application/json", csrf, cookie)
+			if response.Code != test.want || store.startCalls != test.wantCalls {
+				t.Fatalf("status/calls = %d/%d, want %d/%d", response.Code, store.startCalls, test.want, test.wantCalls)
+			}
+			if response.Body.Len() != 0 {
+				t.Fatalf("error response leaked body %q", response.Body.String())
+			}
+			assertSecurityHeaders(t, response)
+		})
+	}
+}
+
+func TestStartPurchasesUsesAuthenticatedAdminAndReturnsStableSafeResult(t *testing.T) {
+	result := successfulStartResult()
+	store := &startRecordingStore{startResult: result}
+	router, _ := newRouterWithStore(t, store)
+	cookie, csrf := authenticatedStartSession(t, router)
+
+	first := serveStartRequest(t, router, validStartBody(), "application/json; charset=utf-8", csrf, cookie)
+	second := serveStartRequest(t, router, validStartBody(), "application/json", csrf, cookie)
+	for index, response := range []*httptest.ResponseRecorder{first, second} {
+		if response.Code != http.StatusOK {
+			t.Fatalf("response %d status = %d, want 200", index, response.Code)
+		}
+		if got := response.Header().Get("Content-Type"); got != "application/json; charset=utf-8" {
+			t.Fatalf("response content type = %q", got)
+		}
+		var decoded tasks.StartResult
+		if err := json.Unmarshal(response.Body.Bytes(), &decoded); err != nil {
+			t.Fatalf("decode response: %v", err)
+		}
+		if decoded.PaymentAutomated || decoded.AuthorizedCount != 1 || decoded.Tasks[0].AuthorizationID != result.Tasks[0].AuthorizationID {
+			t.Fatalf("unsafe or unstable response = %#v", decoded)
+		}
+		assertSecurityHeaders(t, response)
+	}
+	if store.startCalls != 2 || len(store.createdBy) != 2 || store.createdBy[0] != "admin" || store.createdBy[1] != "admin" {
+		t.Fatalf("store calls/created_by = %d/%#v", store.startCalls, store.createdBy)
+	}
+	for _, command := range store.commands {
+		if command.StartKey != startKeyForHTTP || len(command.Tasks) != 1 || command.Tasks[0].TaskID != taskIDForHTTP || command.Tasks[0].ExpectedTaskVersion != 7 {
+			t.Fatalf("decoded command = %#v", command)
+		}
+	}
+}
+
+func TestStartPurchasesMapsStoreErrorsWithoutLeakingDetails(t *testing.T) {
+	for name, test := range map[string]struct {
+		err  error
+		want int
+	}{
+		"invalid":  {err: tasks.ErrInvalidStart, want: http.StatusBadRequest},
+		"conflict": {err: tasks.ErrStartConflict, want: http.StatusConflict},
+		"internal": {err: errors.New("sqlite secret path and query"), want: http.StatusInternalServerError},
+	} {
+		t.Run(name, func(t *testing.T) {
+			store := &startRecordingStore{startErr: test.err}
+			router, _ := newRouterWithStore(t, store)
+			cookie, csrf := authenticatedStartSession(t, router)
+			response := serveStartRequest(t, router, validStartBody(), "application/json", csrf, cookie)
+			if response.Code != test.want || store.startCalls != 1 {
+				t.Fatalf("status/calls = %d/%d, want %d/1", response.Code, store.startCalls, test.want)
+			}
+			if response.Body.Len() != 0 || strings.Contains(response.Body.String(), "sqlite") {
+				t.Fatalf("error leaked details: %q", response.Body.String())
+			}
+		})
+	}
+}
+
+type startRecordingStore struct {
+	startResult tasks.StartResult
+	startErr    error
+	startCalls  int
+	commands    []tasks.StartCommand
+	createdBy   []string
+}
+
+func (store *startRecordingStore) CreateDraft(_ context.Context, draft tasks.Draft) (tasks.Draft, error) {
+	return draft, nil
+}
+
+func (store *startRecordingStore) ListDrafts(context.Context) ([]tasks.Draft, error) {
+	return nil, nil
+}
+
+func (store *startRecordingStore) ListTasks(context.Context, tasks.TaskFilter) ([]tasks.TaskRow, error) {
+	return nil, nil
+}
+
+func (store *startRecordingStore) StartPurchases(_ context.Context, command tasks.StartCommand, createdBy string) (tasks.StartResult, error) {
+	store.startCalls++
+	store.commands = append(store.commands, command)
+	store.createdBy = append(store.createdBy, createdBy)
+	return store.startResult, store.startErr
+}
+
+func authenticatedStartSession(t *testing.T, router http.Handler) (*http.Cookie, string) {
+	t.Helper()
+	cookie := authenticate(t, router)
+	page := serve(router, http.MethodGet, "/tasks", nil, cookie)
+	if page.Code != http.StatusOK {
+		t.Fatalf("GET /tasks status = %d", page.Code)
+	}
+	return cookie, csrfToken(t, page.Body.String())
+}
+
+func newStartRequest(t *testing.T, body, contentType, csrf string, cookie *http.Cookie) *http.Request {
+	t.Helper()
+	return newStartByteRequest(t, []byte(body), contentType, csrf, cookie)
+}
+
+func newStartByteRequest(t *testing.T, body []byte, contentType, csrf string, cookie *http.Cookie) *http.Request {
+	t.Helper()
+	request := httptest.NewRequest(http.MethodPost, "/tasks/start-purchases", bytes.NewReader(body))
+	if contentType != "" {
+		request.Header.Set("Content-Type", contentType)
+	}
+	if csrf != "" {
+		request.Header.Set("X-CSRF-Token", csrf)
+	}
+	if cookie != nil {
+		request.AddCookie(cookie)
+	}
+	return request
+}
+
+func serveStartBytes(t *testing.T, router http.Handler, body []byte, contentType, csrf string, cookie *http.Cookie) *httptest.ResponseRecorder {
+	t.Helper()
+	response := httptest.NewRecorder()
+	router.ServeHTTP(response, newStartByteRequest(t, body, contentType, csrf, cookie))
+	return response
+}
+
+func serveStartRequest(t *testing.T, router http.Handler, body, contentType, csrf string, cookie *http.Cookie) *httptest.ResponseRecorder {
+	t.Helper()
+	response := httptest.NewRecorder()
+	router.ServeHTTP(response, newStartRequest(t, body, contentType, csrf, cookie))
+	return response
+}
+
+func validStartBody() string {
+	return `{"start_key":"` + startKeyForHTTP + `","tasks":[{"task_id":"` + taskIDForHTTP + `","expected_task_version":7}]}`
+}
+
+func successfulStartResult() tasks.StartResult {
+	expires := time.Date(2026, 8, 4, 2, 3, 4, 0, time.UTC)
+	return tasks.StartResult{
+		StartKey:         startKeyForHTTP,
+		AuthorizedCount:  1,
+		PaymentAutomated: false,
+		Tasks: []tasks.AuthorizedTask{{
+			TaskID:          taskIDForHTTP,
+			TaskVersion:     8,
+			AuthorizationID: "d3c9f507-7473-4fa6-8d71-8786c34c6301",
+			ExpiresAt:       expires,
+		}},
+	}
+}

admin/internal/server/task_detail.go

@@ -0,0 +1,84 @@
+package server
+
+import (
+	"errors"
+	"mime"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+
+	"cmbuyer/admin/internal/taskdetail"
+	"cmbuyer/admin/internal/transport/webui"
+
+	"github.com/gin-gonic/gin"
+)
+
+const detailViewHeader = "X-CMBuyer-View"
+const detailVaryHeader = "X-CMBuyer-View, Accept, Sec-Fetch-Site"
+
+func taskDetailPage(options Options) gin.HandlerFunc {
+	return func(context *gin.Context) {
+		context.Header("Vary", detailVaryHeader)
+		if !options.Sessions.IsAuthenticated(context.Request) {
+			context.Redirect(http.StatusSeeOther, "/login?return_to="+url.QueryEscape(context.Request.URL.RequestURI()))
+			return
+		}
+		view := context.GetHeader(detailViewHeader)
+		if view != "" && view != "drawer" {
+			context.Status(http.StatusBadRequest)
+			return
+		}
+		if view == "drawer" {
+			if context.GetHeader("Sec-Fetch-Site") != "same-origin" {
+				context.Status(http.StatusForbidden)
+				return
+			}
+			if !acceptsHTML(context.GetHeader("Accept")) {
+				context.Status(http.StatusNotAcceptable)
+				return
+			}
+		}
+		detail, err := options.TaskDetails.Get(context.Request.Context(), context.Param("id"))
+		if errors.Is(err, taskdetail.ErrNotFound) {
+			context.Status(http.StatusNotFound)
+			return
+		}
+		if err != nil {
+			context.Status(http.StatusInternalServerError)
+			return
+		}
+		context.Header("Content-Type", "text/html; charset=utf-8")
+		context.Status(http.StatusOK)
+		data := webui.TaskDetailData{Detail: detail}
+		if view == "drawer" {
+			if err := webui.RenderTaskDetailFragment(context.Writer, data); err != nil {
+				_ = context.Error(err)
+			}
+			return
+		}
+		if err := webui.RenderTaskDetailPage(context.Writer, data); err != nil {
+			_ = context.Error(err)
+		}
+	}
+}
+
+func acceptsHTML(header string) bool {
+	for _, value := range strings.Split(header, ",") {
+		mediaType, parameters, err := mime.ParseMediaType(strings.TrimSpace(value))
+		if err != nil || !strings.EqualFold(mediaType, "text/html") {
+			continue
+		}
+		quality := 1.0
+		if rawQuality, exists := parameters["q"]; exists {
+			quality, err = strconv.ParseFloat(rawQuality, 64)
+			if err != nil || quality < 0 || quality > 1 {
+				continue
+			}
+		}
+		if quality > 0 {
+			return true
+		}
+	}
+	return false
+}

admin/internal/server/task_detail_test.go

@@ -0,0 +1,110 @@
+package server_test
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"cmbuyer/admin/internal/deviceauth"
+	"cmbuyer/admin/internal/taskdetail"
+)
+
+const detailTaskID = "a3c9f507-7473-4fa6-8d71-8786c34c6301"
+
+func TestTaskDetailRequiresAdminBeforeLookup(t *testing.T) {
+	details := &recordingDetailStore{detail: taskDetailFixture()}
+	router, _ := newRouterWithDependencies(t, &memoryStore{}, details, emptyEvidenceStore{}, deviceauth.RejectAllAuthenticator{})
+	response := serve(router, http.MethodGet, "/tasks/"+detailTaskID, nil, nil)
+	if response.Code != http.StatusSeeOther || !strings.HasPrefix(response.Header().Get("Location"), "/login?return_to=") || details.calls != 0 {
+		t.Fatalf("anonymous detail = %d/%q, calls=%d", response.Code, response.Header().Get("Location"), details.calls)
+	}
+}
+
+func TestTaskDetailFullPageAndDrawerShareAuditContent(t *testing.T) {
+	details := &recordingDetailStore{detail: taskDetailFixture()}
+	router, _ := newRouterWithDependencies(t, &memoryStore{}, details, emptyEvidenceStore{}, deviceauth.RejectAllAuthenticator{})
+	cookie := authenticate(t, router)
+	full := serve(router, http.MethodGet, "/tasks/"+detailTaskID, nil, cookie)
+	if full.Code != http.StatusOK || !strings.Contains(full.Body.String(), "<!doctype html>") || !strings.Contains(full.Body.String(), `data-task-detail-content`) {
+		t.Fatalf("full detail = %d/%q", full.Code, full.Body.String())
+	}
+	request := httptest.NewRequest(http.MethodGet, "/tasks/"+detailTaskID, nil)
+	request.AddCookie(cookie)
+	request.Header.Set("X-CMBuyer-View", "drawer")
+	request.Header.Set("Accept", "text/html")
+	request.Header.Set("Sec-Fetch-Site", "same-origin")
+	fragment := httptest.NewRecorder()
+	router.ServeHTTP(fragment, request)
+	if fragment.Code != http.StatusOK || strings.Contains(fragment.Body.String(), "<!doctype html>") || !strings.Contains(fragment.Body.String(), `data-task-detail-content`) {
+		t.Fatalf("fragment detail = %d/%q", fragment.Code, fragment.Body.String())
+	}
+	for _, text := range []string{"测试&lt;script&gt;", "订单已创建，系统尚未付款", "SKU_PANEL_GATE_1", "/evidence/b3c9f507-7473-4fa6-8d71-8786c34c6301", "暂无规格、价格或数量读数", "本页没有重试、再次提交或付款动作"} {
+		if !strings.Contains(full.Body.String(), text) || !strings.Contains(fragment.Body.String(), text) {
+			t.Fatalf("shared detail missing %q", text)
+		}
+	}
+	if strings.Contains(full.Body.String(), "<script>") || strings.Contains(fragment.Body.String(), "<script>") {
+		t.Fatal("task title was not HTML escaped")
+	}
+	if got := fragment.Header().Get("Vary"); got != "X-CMBuyer-View, Accept, Sec-Fetch-Site" {
+		t.Fatalf("fragment Vary = %q", got)
+	}
+	if details.calls != 2 {
+		t.Fatalf("detail store calls = %d, want 2", details.calls)
+	}
+}
+
+func TestTaskDetailRejectsForgedFragmentAndMissingTask(t *testing.T) {
+	details := &recordingDetailStore{err: taskdetail.ErrNotFound}
+	router, _ := newRouterWithDependencies(t, &memoryStore{}, details, emptyEvidenceStore{}, deviceauth.RejectAllAuthenticator{})
+	cookie := authenticate(t, router)
+	for name, headers := range map[string]map[string]string{
+		"unknown view":        {"X-CMBuyer-View": "xml", "Accept": "text/html"},
+		"missing fetch site":  {"X-CMBuyer-View": "drawer", "Accept": "text/html"},
+		"cross-site drawer":   {"X-CMBuyer-View": "drawer", "Accept": "text/html", "Sec-Fetch-Site": "cross-site"},
+		"wrong accept":        {"X-CMBuyer-View": "drawer", "Accept": "application/json", "Sec-Fetch-Site": "same-origin"},
+		"html quality zero":   {"X-CMBuyer-View": "drawer", "Accept": "text/html;q=0, application/json", "Sec-Fetch-Site": "same-origin"},
+		"html substring mime": {"X-CMBuyer-View": "drawer", "Accept": "application/nottext/html", "Sec-Fetch-Site": "same-origin"},
+	} {
+		t.Run(name, func(t *testing.T) {
+			request := httptest.NewRequest(http.MethodGet, "/tasks/"+detailTaskID, nil)
+			request.AddCookie(cookie)
+			for key, value := range headers {
+				request.Header.Set(key, value)
+			}
+			response := httptest.NewRecorder()
+			router.ServeHTTP(response, request)
+			if response.Code < 400 || response.Code >= 500 || response.Body.Len() != 0 {
+				t.Fatalf("forged fragment = %d/%q", response.Code, response.Body.String())
+			}
+		})
+	}
+	missing := serve(router, http.MethodGet, "/tasks/not-a-uuid", nil, cookie)
+	if missing.Code != http.StatusNotFound || missing.Body.Len() != 0 {
+		t.Fatalf("missing detail = %d/%q", missing.Code, missing.Body.String())
+	}
+}
+
+type recordingDetailStore struct {
+	detail taskdetail.Detail
+	err    error
+	calls  int
+}
+
+func (store *recordingDetailStore) Get(context.Context, string) (taskdetail.Detail, error) {
+	store.calls++
+	return store.detail, store.err
+}
+
+func taskDetailFixture() taskdetail.Detail {
+	started := time.Date(2026, 8, 4, 1, 2, 3, 0, time.UTC)
+	return taskdetail.Detail{
+		Task:           taskdetail.Task{ID: detailTaskID, Source: "MANUAL", Title: "测试<script>", GoodsID: "937122477375", SKUColor: "黑色", SKUSize: "M", Quantity: 2, MaxTotalPrice: "30.00", Status: "WAITING_PAYMENT", Version: 3, CreatedAt: started, UpdatedAt: started},
+		Authorizations: []taskdetail.Authorization{{ID: "c3c9f507-7473-4fa6-8d71-8786c34c6301", Status: "FENCED", CreatedBy: "admin", TotalPriceCap: "30.00", TaskVersion: 2, CreatedAt: started, ExpiresAt: started.Add(time.Hour)}},
+		Attempts:       []taskdetail.Attempt{{ID: "d3c9f507-7473-4fa6-8d71-8786c34c6301", AuthorizationID: "c3c9f507-7473-4fa6-8d71-8786c34c6301", Status: "CLAIMED", ClaimGeneration: 1, StartedAt: started}},
+		Evidence:       []taskdetail.Evidence{{ID: "b3c9f507-7473-4fa6-8d71-8786c34c6301", AttemptID: "d3c9f507-7473-4fa6-8d71-8786c34c6301", Kind: "SKU_PANEL_GATE_1", PrivacyTier: "INTERNAL_RAW", SHA256: strings.Repeat("a", 64), ByteSize: 100, ContentType: "image/png", Width: 100, Height: 200, CapturedAt: started}},
+	}
+}

admin/internal/storage/evidence/durability_unix.go

@@ -0,0 +1,20 @@
+//go:build !windows
+
+package evidence
+
+import (
+	"fmt"
+	"os"
+)
+
+func syncDirectory(path string) error {
+	directory, err := os.Open(path)
+	if err != nil {
+		return fmt.Errorf("open directory for durability sync: %w", err)
+	}
+	defer directory.Close()
+	if err := directory.Sync(); err != nil {
+		return fmt.Errorf("sync directory metadata: %w", err)
+	}
+	return nil
+}

admin/internal/storage/evidence/durability_windows.go

@@ -0,0 +1,35 @@
+//go:build windows
+
+package evidence
+
+import (
+	"fmt"
+	"syscall"
+)
+
+// syncDirectory uses an explicit directory handle because os.Open(...).Sync is not a portable
+// Windows directory durability boundary. Any unsupported filesystem or access failure is fatal:
+// callers must not make the corresponding evidence row visible in SQLite.
+func syncDirectory(path string) error {
+	pathPointer, err := syscall.UTF16PtrFromString(path)
+	if err != nil {
+		return fmt.Errorf("encode directory path for durability sync: %w", err)
+	}
+	handle, err := syscall.CreateFile(
+		pathPointer,
+		syscall.GENERIC_WRITE,
+		syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE,
+		nil,
+		syscall.OPEN_EXISTING,
+		syscall.FILE_FLAG_BACKUP_SEMANTICS,
+		0,
+	)
+	if err != nil {
+		return fmt.Errorf("open directory for durability sync: %w", err)
+	}
+	defer syscall.CloseHandle(handle)
+	if err := syscall.FlushFileBuffers(handle); err != nil {
+		return fmt.Errorf("flush directory metadata: %w", err)
+	}
+	return nil
+}

admin/internal/storage/evidence/store.go

@@ -0,0 +1,545 @@
+// Package evidence stores INTERNAL_RAW PNG assets outside the public web tree.
+package evidence
+
+import (
+	"context"
+	"crypto/rand"
+	"crypto/sha256"
+	"database/sql"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"image/png"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+	"time"
+
+	"cmbuyer/admin/internal/deviceauth"
+	core "cmbuyer/admin/internal/evidence"
+)
+
+var pngSignature = []byte{0x89, 'P', 'N', 'G', 0x0d, 0x0a, 0x1a, 0x0a}
+
+type Store struct {
+	database      *sql.DB
+	root          string
+	now           func() time.Time
+	random        io.Reader
+	syncDirectory func(string) error
+	syncFile      func(*os.File) error
+	renameFile    func(string, string) error
+	commitTx      func(*sql.Tx) error
+	mu            sync.Mutex
+}
+
+func NewStore(database *sql.DB, root string) (*Store, error) {
+	return newStore(database, root, syncDirectory)
+}
+
+func newStore(database *sql.DB, root string, directorySync func(string) error) (*Store, error) {
+	if database == nil {
+		return nil, errors.New("evidence database is required")
+	}
+	if directorySync == nil {
+		return nil, errors.New("evidence directory sync is required")
+	}
+	if root == "" || !filepath.IsAbs(root) {
+		return nil, errors.New("evidence root must be an absolute path")
+	}
+	absolute, err := filepath.Abs(filepath.Clean(root))
+	if err != nil {
+		return nil, fmt.Errorf("resolve evidence root: %w", err)
+	}
+	if filepath.Dir(absolute) == absolute {
+		return nil, errors.New("evidence root cannot be a filesystem root")
+	}
+	if err := ensureDurableDirectory(absolute, 0o700, directorySync); err != nil {
+		return nil, fmt.Errorf("create evidence root: %w", err)
+	}
+	// A prior startup may have created the root and then failed its parent sync.
+	// Existence is therefore never accepted as proof that the directory entry is durable.
+	if err := directorySync(filepath.Dir(absolute)); err != nil {
+		return nil, fmt.Errorf("persist evidence root directory: %w", err)
+	}
+	if err := os.Chmod(absolute, 0o700); err != nil {
+		return nil, fmt.Errorf("protect evidence root: %w", err)
+	}
+	staging := filepath.Join(absolute, ".staging")
+	if err := ensureDurableDirectory(staging, 0o700, directorySync); err != nil {
+		return nil, fmt.Errorf("create evidence staging directory: %w", err)
+	}
+	if err := directorySync(absolute); err != nil {
+		return nil, fmt.Errorf("persist evidence staging directory: %w", err)
+	}
+	if err := os.Chmod(staging, 0o700); err != nil {
+		return nil, fmt.Errorf("protect evidence staging directory: %w", err)
+	}
+	if _, err := database.Exec("SELECT storage_key FROM evidence_assets LIMIT 1"); err != nil {
+		return nil, fmt.Errorf("evidence migration is not available: %w", err)
+	}
+	return &Store{
+		database:      database,
+		root:          absolute,
+		now:           time.Now,
+		random:        rand.Reader,
+		syncDirectory: directorySync,
+		syncFile:      func(file *os.File) error { return file.Sync() },
+		renameFile:    os.Rename,
+		commitTx:      func(transaction *sql.Tx) error { return transaction.Commit() },
+	}, nil
+}
+
+func (store *Store) Stage(reader io.Reader, contentType string) (staged core.StagedFile, resultErr error) {
+	if reader == nil || contentType != core.PNGContentType {
+		return core.StagedFile{}, core.ErrInvalid
+	}
+	temporary, err := os.CreateTemp(filepath.Join(store.root, ".staging"), "upload-*.png")
+	if err != nil {
+		return core.StagedFile{}, err
+	}
+	staged.Path = temporary.Name()
+	defer func() {
+		if resultErr != nil {
+			_ = temporary.Close()
+			_ = os.Remove(staged.Path)
+		}
+	}()
+	if err := temporary.Chmod(0o600); err != nil {
+		return core.StagedFile{}, err
+	}
+	hasher := sha256.New()
+	written, err := io.Copy(io.MultiWriter(temporary, hasher), io.LimitReader(reader, core.MaxFileBytes+1))
+	if err != nil {
+		return core.StagedFile{}, err
+	}
+	if written > core.MaxFileBytes {
+		return core.StagedFile{}, core.ErrTooLarge
+	}
+	if written == 0 {
+		return core.StagedFile{}, core.ErrInvalid
+	}
+	if err := temporary.Sync(); err != nil {
+		return core.StagedFile{}, err
+	}
+	if err := temporary.Close(); err != nil {
+		return core.StagedFile{}, err
+	}
+
+	imageFile, err := os.Open(staged.Path)
+	if err != nil {
+		return core.StagedFile{}, err
+	}
+	defer imageFile.Close()
+	width, height, err := validatePNG(imageFile)
+	if err != nil {
+		return core.StagedFile{}, err
+	}
+
+	staged.SHA256 = hex.EncodeToString(hasher.Sum(nil))
+	staged.ByteSize = written
+	staged.ContentType = core.PNGContentType
+	staged.Width = width
+	staged.Height = height
+	return staged, nil
+}
+
+func (store *Store) Discard(staged core.StagedFile) {
+	if store.isStagedPath(staged.Path) {
+		_ = os.Remove(staged.Path)
+	}
+}
+
+func (store *Store) Commit(ctx context.Context, principal deviceauth.Principal, metadata core.UploadMetadata, staged core.StagedFile) (core.Asset, bool, error) {
+	if !store.isStagedPath(staged.Path) || !validPrincipal(principal) || !validMetadata(metadata) || metadata.SHA256 != staged.SHA256 || staged.ContentType != core.PNGContentType || staged.ByteSize < 1 || staged.ByteSize > core.MaxFileBytes || staged.Width < 1 || staged.Height < 1 || staged.Width > core.MaxImageSide || staged.Height > core.MaxImageSide || int64(staged.Width)*int64(staged.Height) > core.MaxImagePixels {
+		store.Discard(staged)
+		return core.Asset{}, false, core.ErrInvalid
+	}
+	defer store.Discard(staged)
+
+	store.mu.Lock()
+	defer store.mu.Unlock()
+
+	transaction, err := store.database.BeginTx(ctx, nil)
+	if err != nil {
+		return core.Asset{}, false, err
+	}
+	defer transaction.Rollback()
+
+	existing, found, err := findByUploadKey(ctx, transaction, principal.ID, metadata.UploadKey)
+	if err != nil {
+		return core.Asset{}, false, err
+	}
+	if found {
+		if !sameUpload(existing, principal, metadata, staged) {
+			return core.Asset{}, false, core.ErrConflict
+		}
+		if err := store.verifyStoredFile(existing); err != nil {
+			return core.Asset{}, false, err
+		}
+		if err := store.commitTx(transaction); err != nil {
+			return core.Asset{}, false, err
+		}
+		return existing, true, nil
+	}
+
+	var attemptCount int
+	if err := transaction.QueryRowContext(ctx, "SELECT COUNT(*) FROM purchase_attempts WHERE task_id = ? AND id = ?", metadata.TaskID, metadata.AttemptID).Scan(&attemptCount); err != nil {
+		return core.Asset{}, false, err
+	}
+	if attemptCount != 1 {
+		return core.Asset{}, false, core.ErrInvalid
+	}
+
+	storageKey := storageKey(metadata.SHA256)
+	finalPath, err := store.pathForKey(storageKey)
+	if err != nil {
+		return core.Asset{}, false, err
+	}
+	finalDirectory := filepath.Dir(finalPath)
+	if err := ensureDurableDirectory(finalDirectory, 0o700, store.syncDirectory); err != nil {
+		return core.Asset{}, false, err
+	}
+	// Always repeat the shard-parent boundary. If an earlier attempt created this
+	// directory and its parent sync failed, a retry must not trust mere existence.
+	if err := store.syncDirectory(store.root); err != nil {
+		return core.Asset{}, false, fmt.Errorf("persist evidence shard directory: %w", err)
+	}
+	if err := os.Chmod(finalDirectory, 0o700); err != nil {
+		return core.Asset{}, false, err
+	}
+	if info, statErr := os.Stat(finalPath); statErr == nil {
+		if !info.Mode().IsRegular() || info.Size() != staged.ByteSize || fileSHA256(finalPath) != staged.SHA256 {
+			return core.Asset{}, false, errors.New("stored evidence content does not match its key")
+		}
+	} else if !errors.Is(statErr, os.ErrNotExist) {
+		return core.Asset{}, false, statErr
+	} else {
+		publishPath, err := store.preparePublishFile(staged, finalDirectory)
+		if err != nil {
+			return core.Asset{}, false, err
+		}
+		defer os.Remove(publishPath)
+		if err := store.renameFile(publishPath, finalPath); err != nil {
+			return core.Asset{}, false, err
+		}
+	}
+	// The publication file was fsynced in this shard before its same-directory rename.
+	// Persist the final directory entry before SQLite can expose a referencing row.
+	// A directory sync failure is deliberately fatal; the unreachable file may remain
+	// as an orphan, but no evidence_assets row may be committed for it.
+	if err := store.syncDirectory(finalDirectory); err != nil {
+		return core.Asset{}, false, fmt.Errorf("persist evidence directory entry: %w", err)
+	}
+
+	id, err := newUUID(store.random)
+	if err != nil {
+		return core.Asset{}, false, err
+	}
+	now := store.now().UTC()
+	asset := core.Asset{
+		ID: id, TaskID: metadata.TaskID, AttemptID: metadata.AttemptID,
+		Kind: metadata.Kind, PrivacyTier: metadata.PrivacyTier, SHA256: staged.SHA256,
+		ByteSize: staged.ByteSize, ContentType: staged.ContentType, Width: staged.Width, Height: staged.Height,
+		CapturedAt: metadata.CapturedAt.UTC(), UploadedByDeviceID: principal.ID,
+		StorageKey: storageKey, CreatedAt: now,
+	}
+	_, err = transaction.ExecContext(ctx, `INSERT INTO evidence_assets
+		(id, upload_key, task_id, attempt_id, kind, privacy_tier, sha256, byte_size, content_type, width_px, height_px, storage_key, uploaded_by_device_id, captured_at, created_at)
+		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
+		asset.ID, metadata.UploadKey, asset.TaskID, asset.AttemptID, asset.Kind, asset.PrivacyTier,
+		asset.SHA256, asset.ByteSize, asset.ContentType, asset.Width, asset.Height, asset.StorageKey,
+		asset.UploadedByDeviceID, asset.CapturedAt.Format(time.RFC3339Nano), asset.CreatedAt.Format(time.RFC3339Nano))
+	if err != nil {
+		return core.Asset{}, false, err
+	}
+	if err := store.commitTx(transaction); err != nil {
+		return core.Asset{}, false, err
+	}
+	return asset, false, nil
+}
+
+func (store *Store) Open(ctx context.Context, id string) (core.Asset, io.ReadSeekCloser, error) {
+	if !validUUID(id) {
+		return core.Asset{}, nil, core.ErrNotFound
+	}
+	asset, found, err := findByID(ctx, store.database, id)
+	if err != nil {
+		return core.Asset{}, nil, err
+	}
+	if !found || asset.StorageKey != storageKey(asset.SHA256) {
+		return core.Asset{}, nil, core.ErrNotFound
+	}
+	path, err := store.pathForKey(asset.StorageKey)
+	if err != nil {
+		return core.Asset{}, nil, core.ErrNotFound
+	}
+	file, err := os.Open(path)
+	if errors.Is(err, os.ErrNotExist) {
+		return core.Asset{}, nil, core.ErrNotFound
+	}
+	if err != nil {
+		return core.Asset{}, nil, err
+	}
+	info, err := file.Stat()
+	if err != nil || !info.Mode().IsRegular() || info.Size() != asset.ByteSize {
+		_ = file.Close()
+		if err != nil {
+			return core.Asset{}, nil, err
+		}
+		return core.Asset{}, nil, core.ErrNotFound
+	}
+	return asset, file, nil
+}
+
+func (store *Store) verifyStoredFile(asset core.Asset) error {
+	path, err := store.pathForKey(asset.StorageKey)
+	if err != nil {
+		return err
+	}
+	info, err := os.Stat(path)
+	if err != nil || !info.Mode().IsRegular() || info.Size() != asset.ByteSize || fileSHA256(path) != asset.SHA256 {
+		if err != nil {
+			return err
+		}
+		return errors.New("stored evidence file is invalid")
+	}
+	return nil
+}
+
+func (store *Store) isStagedPath(path string) bool {
+	if path == "" {
+		return false
+	}
+	relative, err := filepath.Rel(filepath.Join(store.root, ".staging"), filepath.Clean(path))
+	return err == nil && relative != "." && relative != "" && relative != ".." && !strings.HasPrefix(relative, ".."+string(filepath.Separator)) && !filepath.IsAbs(relative)
+}
+
+func (store *Store) pathForKey(key string) (string, error) {
+	path := filepath.Join(store.root, filepath.FromSlash(key))
+	relative, err := filepath.Rel(store.root, path)
+	if err != nil || relative == "." || relative == "" || relative == ".." || strings.HasPrefix(relative, ".."+string(filepath.Separator)) || filepath.IsAbs(relative) {
+		return "", errors.New("invalid evidence storage key")
+	}
+	return path, nil
+}
+
+func (store *Store) preparePublishFile(staged core.StagedFile, directory string) (path string, resultErr error) {
+	source, err := os.Open(staged.Path)
+	if err != nil {
+		return "", err
+	}
+	defer source.Close()
+
+	temporary, err := os.CreateTemp(directory, ".publish-*.png")
+	if err != nil {
+		return "", err
+	}
+	temporaryPath := temporary.Name()
+	path = temporaryPath
+	defer func() {
+		if resultErr != nil {
+			_ = temporary.Close()
+			_ = os.Remove(temporaryPath)
+		}
+	}()
+	if err := temporary.Chmod(0o600); err != nil {
+		return "", err
+	}
+	hasher := sha256.New()
+	written, err := io.Copy(io.MultiWriter(temporary, hasher), source)
+	if err != nil {
+		return "", err
+	}
+	if written != staged.ByteSize || hex.EncodeToString(hasher.Sum(nil)) != staged.SHA256 {
+		return "", errors.New("staged evidence changed before publication")
+	}
+	width, height, err := validatePNG(temporary)
+	if err != nil {
+		return "", err
+	}
+	if width != staged.Width || height != staged.Height {
+		return "", errors.New("staged evidence dimensions changed before publication")
+	}
+	if err := store.syncFile(temporary); err != nil {
+		return "", fmt.Errorf("sync evidence publication file: %w", err)
+	}
+	if err := temporary.Close(); err != nil {
+		return "", err
+	}
+	return path, nil
+}
+
+func validatePNG(reader io.ReadSeeker) (int, int, error) {
+	if _, err := reader.Seek(0, io.SeekStart); err != nil {
+		return 0, 0, err
+	}
+	signature := make([]byte, len(pngSignature))
+	if _, err := io.ReadFull(reader, signature); err != nil || string(signature) != string(pngSignature) {
+		return 0, 0, core.ErrInvalid
+	}
+	if _, err := reader.Seek(0, io.SeekStart); err != nil {
+		return 0, 0, err
+	}
+	configuration, err := png.DecodeConfig(reader)
+	if err != nil || configuration.Width < 1 || configuration.Height < 1 || configuration.Width > core.MaxImageSide || configuration.Height > core.MaxImageSide || int64(configuration.Width)*int64(configuration.Height) > core.MaxImagePixels {
+		return 0, 0, core.ErrInvalid
+	}
+	if _, err := reader.Seek(0, io.SeekStart); err != nil {
+		return 0, 0, err
+	}
+	if _, err := png.Decode(reader); err != nil {
+		return 0, 0, core.ErrInvalid
+	}
+	var trailing [1]byte
+	if count, err := reader.Read(trailing[:]); count != 0 || !errors.Is(err, io.EOF) {
+		return 0, 0, core.ErrInvalid
+	}
+	return configuration.Width, configuration.Height, nil
+}
+
+func ensureDurableDirectory(path string, mode os.FileMode, syncParent func(string) error) error {
+	info, err := os.Stat(path)
+	if err == nil {
+		if !info.IsDir() {
+			return fmt.Errorf("path exists but is not a directory: %s", path)
+		}
+		return nil
+	}
+	if !errors.Is(err, os.ErrNotExist) {
+		return err
+	}
+
+	parent := filepath.Dir(path)
+	if parent == path {
+		return fmt.Errorf("cannot create filesystem root as a managed directory: %s", path)
+	}
+	if err := ensureDurableDirectory(parent, mode, syncParent); err != nil {
+		return err
+	}
+	if err := os.Mkdir(path, mode); err != nil && !errors.Is(err, os.ErrExist) {
+		return err
+	}
+	info, err = os.Stat(path)
+	if err != nil {
+		return err
+	}
+	if !info.IsDir() {
+		return fmt.Errorf("path exists but is not a directory: %s", path)
+	}
+	if err := os.Chmod(path, mode); err != nil {
+		return err
+	}
+	// Syncing the parent makes creation of this directory durable. This also covers
+	// a concurrent creator: returning success without the parent sync could otherwise
+	// allow the following database transaction to outrun the directory entry.
+	if err := syncParent(parent); err != nil {
+		return fmt.Errorf("persist directory creation for %s: %w", path, err)
+	}
+	return nil
+}
+
+func storageKey(hash string) string { return hash[:2] + "/" + hash + ".png" }
+
+func validMetadata(metadata core.UploadMetadata) bool {
+	return validUUID(metadata.UploadKey) && validUUID(metadata.TaskID) && validUUID(metadata.AttemptID) && metadata.Kind == core.KindSKUPanelGate1 && metadata.PrivacyTier == core.PrivacyInternalRaw && validSHA256(metadata.SHA256) && !metadata.CapturedAt.IsZero() && metadata.CapturedAt.Location() == time.UTC
+}
+
+func validPrincipal(principal deviceauth.Principal) bool {
+	return deviceauth.ValidDeviceID(principal.ID)
+}
+
+func validSHA256(value string) bool {
+	if len(value) != 64 {
+		return false
+	}
+	for _, character := range value {
+		if !(character >= '0' && character <= '9' || character >= 'a' && character <= 'f') {
+			return false
+		}
+	}
+	return true
+}
+
+func validUUID(value string) bool {
+	if len(value) != 36 {
+		return false
+	}
+	for index, character := range value {
+		if index == 8 || index == 13 || index == 18 || index == 23 {
+			if character != '-' {
+				return false
+			}
+			continue
+		}
+		if !(character >= '0' && character <= '9' || character >= 'a' && character <= 'f') {
+			return false
+		}
+	}
+	return value[14] == '4' && (value[19] == '8' || value[19] == '9' || value[19] == 'a' || value[19] == 'b')
+}
+
+func newUUID(reader io.Reader) (string, error) {
+	bytes := make([]byte, 16)
+	if _, err := io.ReadFull(reader, bytes); err != nil {
+		return "", err
+	}
+	bytes[6] = (bytes[6] & 0x0f) | 0x40
+	bytes[8] = (bytes[8] & 0x3f) | 0x80
+	encoded := hex.EncodeToString(bytes)
+	return encoded[:8] + "-" + encoded[8:12] + "-" + encoded[12:16] + "-" + encoded[16:20] + "-" + encoded[20:], nil
+}
+
+func fileSHA256(path string) string {
+	file, err := os.Open(path)
+	if err != nil {
+		return ""
+	}
+	defer file.Close()
+	hasher := sha256.New()
+	if _, err := io.Copy(hasher, file); err != nil {
+		return ""
+	}
+	return hex.EncodeToString(hasher.Sum(nil))
+}
+
+type rowScanner interface{ Scan(...any) error }
+
+func findByUploadKey(ctx context.Context, query interface {
+	QueryRowContext(context.Context, string, ...any) *sql.Row
+}, deviceID, uploadKey string) (core.Asset, bool, error) {
+	return scanAsset(query.QueryRowContext(ctx, `SELECT id, task_id, attempt_id, kind, privacy_tier, sha256, byte_size, content_type, width_px, height_px, storage_key, uploaded_by_device_id, captured_at, created_at FROM evidence_assets WHERE uploaded_by_device_id = ? AND upload_key = ?`, deviceID, uploadKey))
+}
+
+func findByID(ctx context.Context, query interface {
+	QueryRowContext(context.Context, string, ...any) *sql.Row
+}, id string) (core.Asset, bool, error) {
+	return scanAsset(query.QueryRowContext(ctx, `SELECT id, task_id, attempt_id, kind, privacy_tier, sha256, byte_size, content_type, width_px, height_px, storage_key, uploaded_by_device_id, captured_at, created_at FROM evidence_assets WHERE id = ?`, id))
+}
+
+func scanAsset(row rowScanner) (core.Asset, bool, error) {
+	var asset core.Asset
+	var captured, created string
+	err := row.Scan(&asset.ID, &asset.TaskID, &asset.AttemptID, &asset.Kind, &asset.PrivacyTier, &asset.SHA256, &asset.ByteSize, &asset.ContentType, &asset.Width, &asset.Height, &asset.StorageKey, &asset.UploadedByDeviceID, &captured, &created)
+	if errors.Is(err, sql.ErrNoRows) {
+		return core.Asset{}, false, nil
+	}
+	if err != nil {
+		return core.Asset{}, false, err
+	}
+	asset.CapturedAt, err = time.Parse(time.RFC3339Nano, captured)
+	if err != nil {
+		return core.Asset{}, false, err
+	}
+	asset.CreatedAt, err = time.Parse(time.RFC3339Nano, created)
+	if err != nil {
+		return core.Asset{}, false, err
+	}
+	return asset, true, nil
+}
+
+func sameUpload(asset core.Asset, principal deviceauth.Principal, metadata core.UploadMetadata, staged core.StagedFile) bool {
+	return asset.TaskID == metadata.TaskID && asset.AttemptID == metadata.AttemptID && asset.Kind == metadata.Kind && asset.PrivacyTier == metadata.PrivacyTier && asset.SHA256 == metadata.SHA256 && asset.ByteSize == staged.ByteSize && asset.ContentType == staged.ContentType && asset.Width == staged.Width && asset.Height == staged.Height && asset.UploadedByDeviceID == principal.ID && asset.CapturedAt.Equal(metadata.CapturedAt)
+}

admin/internal/storage/evidence/store_test.go

@@ -0,0 +1,554 @@
+package evidence
+
+import (
+	"bytes"
+	"context"
+	"crypto/sha256"
+	"database/sql"
+	"encoding/hex"
+	"errors"
+	"image"
+	"image/color"
+	"image/png"
+	"io"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"cmbuyer/admin/internal/deviceauth"
+	core "cmbuyer/admin/internal/evidence"
+	"cmbuyer/admin/internal/migrations"
+	"cmbuyer/admin/internal/storage/sqlite"
+)
+
+const (
+	testTaskID    = "13c9f507-7473-4fa6-8d71-8786c34c6301"
+	testAuthID    = "23c9f507-7473-4fa6-8d71-8786c34c6301"
+	testAttemptID = "33c9f507-7473-4fa6-8d71-8786c34c6301"
+	testUploadKey = "43c9f507-7473-4fa6-8d71-8786c34c6301"
+	testDeviceID  = "53c9f507-7473-4fa6-8d71-8786c34c6301"
+)
+
+func TestStageCommitReplayAndOpen(t *testing.T) {
+	database, store := newTestStore(t)
+	insertAttemptFixture(t, database)
+	pngBytes := makePNG(t, 8, 6)
+	hash := sha256Hex(pngBytes)
+	metadata := core.UploadMetadata{UploadKey: testUploadKey, TaskID: testTaskID, AttemptID: testAttemptID, Kind: core.KindSKUPanelGate1, PrivacyTier: core.PrivacyInternalRaw, SHA256: hash, CapturedAt: time.Date(2026, 8, 4, 1, 2, 3, 0, time.UTC)}
+	principal := deviceauth.Principal{ID: testDeviceID}
+
+	staged, err := store.Stage(bytes.NewReader(pngBytes), core.PNGContentType)
+	if err != nil {
+		t.Fatalf("Stage: %v", err)
+	}
+	asset, replayed, err := store.Commit(context.Background(), principal, metadata, staged)
+	if err != nil || replayed {
+		t.Fatalf("Commit = replayed %t, err %v", replayed, err)
+	}
+	if asset.SHA256 != hash || asset.ByteSize != int64(len(pngBytes)) || asset.Width != 8 || asset.Height != 6 || asset.StorageKey != hash[:2]+"/"+hash+".png" {
+		t.Fatalf("asset = %#v", asset)
+	}
+	opened, reader, err := store.Open(context.Background(), asset.ID)
+	if err != nil {
+		t.Fatalf("Open: %v", err)
+	}
+	got, err := io.ReadAll(reader)
+	_ = reader.Close()
+	if err != nil || !bytes.Equal(got, pngBytes) || opened.ID != asset.ID {
+		t.Fatalf("opened asset changed: bytes=%t asset=%#v err=%v", bytes.Equal(got, pngBytes), opened, err)
+	}
+
+	replayStage, err := store.Stage(bytes.NewReader(pngBytes), core.PNGContentType)
+	if err != nil {
+		t.Fatalf("stage replay: %v", err)
+	}
+	replayedAsset, replayed, err := store.Commit(context.Background(), principal, metadata, replayStage)
+	if err != nil || !replayed || replayedAsset.ID != asset.ID {
+		t.Fatalf("replay = %#v, %t, %v", replayedAsset, replayed, err)
+	}
+
+	conflictStage, err := store.Stage(bytes.NewReader(pngBytes), core.PNGContentType)
+	if err != nil {
+		t.Fatalf("stage conflict: %v", err)
+	}
+	conflicting := metadata
+	conflicting.CapturedAt = conflicting.CapturedAt.Add(time.Second)
+	if _, _, err := store.Commit(context.Background(), principal, conflicting, conflictStage); !errors.Is(err, core.ErrConflict) {
+		t.Fatalf("conflicting replay error = %v", err)
+	}
+}
+
+func TestConcurrentReplayCreatesOneAsset(t *testing.T) {
+	database, store := newTestStore(t)
+	insertAttemptFixture(t, database)
+	pngBytes := makePNG(t, 3, 2)
+	metadata := core.UploadMetadata{UploadKey: testUploadKey, TaskID: testTaskID, AttemptID: testAttemptID, Kind: core.KindSKUPanelGate1, PrivacyTier: core.PrivacyInternalRaw, SHA256: sha256Hex(pngBytes), CapturedAt: time.Date(2026, 8, 4, 1, 2, 3, 0, time.UTC)}
+	staged := make([]core.StagedFile, 2)
+	for index := range staged {
+		var err error
+		staged[index], err = store.Stage(bytes.NewReader(pngBytes), core.PNGContentType)
+		if err != nil {
+			t.Fatalf("Stage %d: %v", index, err)
+		}
+	}
+	var wait sync.WaitGroup
+	wait.Add(2)
+	assets := make([]core.Asset, 2)
+	replays := make([]bool, 2)
+	errorsSeen := make([]error, 2)
+	for index := range staged {
+		go func(index int) {
+			defer wait.Done()
+			assets[index], replays[index], errorsSeen[index] = store.Commit(context.Background(), deviceauth.Principal{ID: testDeviceID}, metadata, staged[index])
+		}(index)
+	}
+	wait.Wait()
+	if errorsSeen[0] != nil || errorsSeen[1] != nil || assets[0].ID != assets[1].ID || replays[0] == replays[1] {
+		t.Fatalf("concurrent commits assets=%#v replays=%#v errors=%#v", assets, replays, errorsSeen)
+	}
+	var count int
+	if err := database.QueryRow("SELECT COUNT(*) FROM evidence_assets").Scan(&count); err != nil || count != 1 {
+		t.Fatalf("asset count = %d, err %v", count, err)
+	}
+}
+
+func TestPlatformDirectorySync(t *testing.T) {
+	if err := syncDirectory(t.TempDir()); err != nil {
+		t.Fatalf("syncDirectory must either establish the durability boundary or fail closed: %v", err)
+	}
+}
+
+func TestNewStoreRetriesRootParentSyncWhenRootAlreadyExists(t *testing.T) {
+	database, _ := newTestStore(t)
+	parent := t.TempDir()
+	root := filepath.Join(parent, "retry-root")
+	injected := errors.New("injected root parent sync failure")
+	if _, err := newStore(database, root, func(string) error { return injected }); !errors.Is(err, injected) {
+		t.Fatalf("first newStore error = %v, want injected root sync failure", err)
+	}
+	if info, err := os.Stat(root); err != nil || !info.IsDir() {
+		t.Fatalf("failed parent sync must leave root for retry: info=%v err=%v", info, err)
+	}
+
+	var paths []string
+	store, err := newStore(database, root, func(path string) error {
+		paths = append(paths, path)
+		return syncDirectory(path)
+	})
+	if err != nil {
+		t.Fatalf("retry newStore: %v", err)
+	}
+	if store == nil || len(paths) == 0 || paths[0] != parent {
+		t.Fatalf("retry sync paths = %#v, want root parent %q first", paths, parent)
+	}
+}
+
+func TestCommitSyncsShardAndRenameBeforeDatabaseWrite(t *testing.T) {
+	database, store := newTestStore(t)
+	insertAttemptFixture(t, database)
+	pngBytes := makePNG(t, 4, 3)
+	hash := sha256Hex(pngBytes)
+	metadata := testMetadata(hash)
+	staged, err := store.Stage(bytes.NewReader(pngBytes), core.PNGContentType)
+	if err != nil {
+		t.Fatalf("Stage: %v", err)
+	}
+	finalPath, err := store.pathForKey(storageKey(hash))
+	if err != nil {
+		t.Fatalf("final path: %v", err)
+	}
+	finalDirectory := filepath.Dir(finalPath)
+	var events []string
+	store.syncDirectory = func(path string) error {
+		var count int
+		if err := database.QueryRow("SELECT COUNT(*) FROM evidence_assets").Scan(&count); err != nil {
+			t.Fatalf("count evidence before directory sync: %v", err)
+		}
+		if count != 0 {
+			t.Fatalf("database row became visible before directory sync: %d", count)
+		}
+		switch path {
+		case store.root:
+			events = append(events, "sync-root")
+			if path != store.root {
+				t.Fatalf("shard parent sync path = %q, want evidence root %q", path, store.root)
+			}
+			if info, err := os.Stat(finalDirectory); err != nil || !info.IsDir() {
+				t.Fatalf("shard directory must exist before parent sync: info=%v err=%v", info, err)
+			}
+			if _, err := os.Stat(finalPath); !errors.Is(err, os.ErrNotExist) {
+				t.Fatalf("final file exists before publication: %v", err)
+			}
+		case finalDirectory:
+			events = append(events, "sync-shard")
+			if info, err := os.Stat(finalPath); err != nil || !info.Mode().IsRegular() {
+				t.Fatalf("renamed file must exist before shard sync: info=%v err=%v", info, err)
+			}
+		default:
+			t.Fatalf("unexpected extra directory sync: %q", path)
+		}
+		return syncDirectory(path)
+	}
+	store.syncFile = func(file *os.File) error {
+		if filepath.Dir(file.Name()) != finalDirectory || !strings.HasPrefix(filepath.Base(file.Name()), ".publish-") {
+			t.Fatalf("publication temp is not inside shard: %q", file.Name())
+		}
+		events = append(events, "sync-file")
+		return file.Sync()
+	}
+	store.renameFile = func(oldPath, newPath string) error {
+		if filepath.Dir(oldPath) != filepath.Dir(newPath) || newPath != finalPath {
+			t.Fatalf("rename is not same-directory publication: %q -> %q", oldPath, newPath)
+		}
+		events = append(events, "rename")
+		return os.Rename(oldPath, newPath)
+	}
+
+	if _, replayed, err := store.Commit(context.Background(), deviceauth.Principal{ID: testDeviceID}, metadata, staged); err != nil || replayed {
+		t.Fatalf("Commit = replayed %t, err %v", replayed, err)
+	}
+	if got, want := strings.Join(events, ","), "sync-root,sync-root,sync-file,rename,sync-shard"; got != want {
+		t.Fatalf("durability order = %q, want %q", got, want)
+	}
+	assertEvidenceCount(t, database, 1)
+	assertNoPublishTemps(t, finalDirectory)
+}
+
+func TestCommitDirectorySyncFailuresNeverWriteDatabase(t *testing.T) {
+	for _, failAt := range []int{1, 2, 3} {
+		t.Run(map[int]string{1: "new shard parent", 2: "unconditional shard parent", 3: "rename target"}[failAt], func(t *testing.T) {
+			database, store := newTestStore(t)
+			insertAttemptFixture(t, database)
+			pngBytes := makePNG(t, 4, 3)
+			hash := sha256Hex(pngBytes)
+			staged, err := store.Stage(bytes.NewReader(pngBytes), core.PNGContentType)
+			if err != nil {
+				t.Fatalf("Stage: %v", err)
+			}
+			finalPath, err := store.pathForKey(storageKey(hash))
+			if err != nil {
+				t.Fatalf("final path: %v", err)
+			}
+			injected := errors.New("injected directory sync failure")
+			calls := 0
+			store.syncDirectory = func(path string) error {
+				calls++
+				if calls == failAt {
+					return injected
+				}
+				return syncDirectory(path)
+			}
+
+			if _, _, err := store.Commit(context.Background(), deviceauth.Principal{ID: testDeviceID}, testMetadata(hash), staged); !errors.Is(err, injected) {
+				t.Fatalf("Commit error = %v, want injected sync failure", err)
+			}
+			if calls != failAt {
+				t.Fatalf("sync calls = %d, want %d", calls, failAt)
+			}
+			assertEvidenceCount(t, database, 0)
+			_, statErr := os.Stat(finalPath)
+			if failAt < 3 && !errors.Is(statErr, os.ErrNotExist) {
+				t.Fatalf("file exists before rename durability boundary: %v", statErr)
+			}
+			if failAt == 3 && statErr != nil {
+				t.Fatalf("post-rename sync failure may leave an orphan file, stat error = %v", statErr)
+			}
+			assertNoPublishTemps(t, filepath.Dir(finalPath))
+		})
+	}
+}
+
+func TestCommitRetriesShardParentSyncAfterPriorFailure(t *testing.T) {
+	database, store := newTestStore(t)
+	insertAttemptFixture(t, database)
+	pngBytes := makePNG(t, 4, 3)
+	hash := sha256Hex(pngBytes)
+	finalPath, err := store.pathForKey(storageKey(hash))
+	if err != nil {
+		t.Fatalf("final path: %v", err)
+	}
+	firstStage, err := store.Stage(bytes.NewReader(pngBytes), core.PNGContentType)
+	if err != nil {
+		t.Fatalf("first Stage: %v", err)
+	}
+	injected := errors.New("injected first shard parent sync failure")
+	store.syncDirectory = func(string) error { return injected }
+	if _, _, err := store.Commit(context.Background(), deviceauth.Principal{ID: testDeviceID}, testMetadata(hash), firstStage); !errors.Is(err, injected) {
+		t.Fatalf("first Commit error = %v", err)
+	}
+	if info, err := os.Stat(filepath.Dir(finalPath)); err != nil || !info.IsDir() {
+		t.Fatalf("failed first sync must leave the created shard for retry: info=%v err=%v", info, err)
+	}
+	assertEvidenceCount(t, database, 0)
+
+	secondStage, err := store.Stage(bytes.NewReader(pngBytes), core.PNGContentType)
+	if err != nil {
+		t.Fatalf("second Stage: %v", err)
+	}
+	var paths []string
+	store.syncDirectory = func(path string) error {
+		paths = append(paths, path)
+		return syncDirectory(path)
+	}
+	if _, replayed, err := store.Commit(context.Background(), deviceauth.Principal{ID: testDeviceID}, testMetadata(hash), secondStage); err != nil || replayed {
+		t.Fatalf("retry Commit = replayed %t, err %v", replayed, err)
+	}
+	if len(paths) != 2 || paths[0] != store.root || paths[1] != filepath.Dir(finalPath) {
+		t.Fatalf("retry sync paths = %#v, want root then shard", paths)
+	}
+	assertEvidenceCount(t, database, 1)
+	assertNoPublishTemps(t, filepath.Dir(finalPath))
+}
+
+func TestCommitPublicationFailuresCleanTempAndNeverWriteDatabase(t *testing.T) {
+	for _, name := range []string{"file sync", "rename"} {
+		t.Run(name, func(t *testing.T) {
+			database, store := newTestStore(t)
+			insertAttemptFixture(t, database)
+			pngBytes := makePNG(t, 4, 3)
+			hash := sha256Hex(pngBytes)
+			staged, err := store.Stage(bytes.NewReader(pngBytes), core.PNGContentType)
+			if err != nil {
+				t.Fatalf("Stage: %v", err)
+			}
+			finalPath, err := store.pathForKey(storageKey(hash))
+			if err != nil {
+				t.Fatalf("final path: %v", err)
+			}
+			injected := errors.New("injected publication failure")
+			if name == "file sync" {
+				store.syncFile = func(*os.File) error { return injected }
+			} else {
+				store.renameFile = func(string, string) error { return injected }
+			}
+			if _, _, err := store.Commit(context.Background(), deviceauth.Principal{ID: testDeviceID}, testMetadata(hash), staged); !errors.Is(err, injected) {
+				t.Fatalf("Commit error = %v, want injected publication failure", err)
+			}
+			if _, err := os.Stat(finalPath); !errors.Is(err, os.ErrNotExist) {
+				t.Fatalf("final file exists after failed publication: %v", err)
+			}
+			assertNoPublishTemps(t, filepath.Dir(finalPath))
+			assertEvidenceCount(t, database, 0)
+		})
+	}
+}
+
+func TestCommitDatabaseFailuresAfterDurableRenameLeaveOnlyOrphan(t *testing.T) {
+	for _, test := range []struct {
+		name   string
+		inject func(*testing.T, *sql.DB, *Store, error)
+	}{
+		{
+			name: "insert",
+			inject: func(t *testing.T, database *sql.DB, _ *Store, _ error) {
+				t.Helper()
+				if _, err := database.Exec(`CREATE TRIGGER fail_evidence_insert BEFORE INSERT ON evidence_assets BEGIN SELECT RAISE(ABORT, 'injected insert failure'); END`); err != nil {
+					t.Fatalf("create insert failure trigger: %v", err)
+				}
+			},
+		},
+		{
+			name: "commit",
+			inject: func(_ *testing.T, _ *sql.DB, store *Store, injected error) {
+				store.commitTx = func(*sql.Tx) error { return injected }
+			},
+		},
+	} {
+		t.Run(test.name, func(t *testing.T) {
+			database, store := newTestStore(t)
+			insertAttemptFixture(t, database)
+			pngBytes := makePNG(t, 4, 3)
+			hash := sha256Hex(pngBytes)
+			staged, err := store.Stage(bytes.NewReader(pngBytes), core.PNGContentType)
+			if err != nil {
+				t.Fatalf("Stage: %v", err)
+			}
+			finalPath, err := store.pathForKey(storageKey(hash))
+			if err != nil {
+				t.Fatalf("final path: %v", err)
+			}
+			injected := errors.New("injected database failure")
+			test.inject(t, database, store, injected)
+			syncCalls := 0
+			store.syncDirectory = func(path string) error {
+				syncCalls++
+				return syncDirectory(path)
+			}
+
+			if _, _, err := store.Commit(context.Background(), deviceauth.Principal{ID: testDeviceID}, testMetadata(hash), staged); err == nil {
+				t.Fatal("Commit unexpectedly succeeded")
+			}
+			if syncCalls != 3 {
+				t.Fatalf("database failure occurred before both durability syncs: sync calls = %d", syncCalls)
+			}
+			if info, err := os.Stat(finalPath); err != nil || !info.Mode().IsRegular() {
+				t.Fatalf("durable rename may leave only an orphan file: info=%v err=%v", info, err)
+			}
+			assertNoPublishTemps(t, filepath.Dir(finalPath))
+			assertEvidenceCount(t, database, 0)
+		})
+	}
+}
+
+func TestStageRejectsUnsafeContent(t *testing.T) {
+	_, store := newTestStore(t)
+	largePNG := makePNG(t, core.MaxImageSide+1, 1)
+	pngWithXML := append(makePNG(t, 1, 1), []byte("<hierarchy/>")...)
+	for name, test := range map[string]struct {
+		reader      io.Reader
+		contentType string
+	}{
+		"wrong content type": {reader: bytes.NewReader(makePNG(t, 1, 1)), contentType: "application/octet-stream"},
+		"xml":                {reader: bytes.NewBufferString("<hierarchy/>"), contentType: core.PNGContentType},
+		"png with xml tail":  {reader: bytes.NewReader(pngWithXML), contentType: core.PNGContentType},
+		"truncated png":      {reader: bytes.NewReader(pngSignature), contentType: core.PNGContentType},
+		"too wide":           {reader: bytes.NewReader(largePNG), contentType: core.PNGContentType},
+		"too many bytes":     {reader: io.LimitReader(zeroReader{}, core.MaxFileBytes+1), contentType: core.PNGContentType},
+	} {
+		t.Run(name, func(t *testing.T) {
+			staged, err := store.Stage(test.reader, test.contentType)
+			if !errors.Is(err, core.ErrInvalid) && !errors.Is(err, core.ErrTooLarge) {
+				store.Discard(staged)
+				t.Fatalf("Stage error = %v", err)
+			}
+		})
+	}
+}
+
+func TestCommitRequiresAttemptOwnedByTaskAndLowercaseHash(t *testing.T) {
+	database, store := newTestStore(t)
+	insertAttemptFixture(t, database)
+	pngBytes := makePNG(t, 2, 2)
+	base := core.UploadMetadata{UploadKey: testUploadKey, TaskID: testTaskID, AttemptID: testAttemptID, Kind: core.KindSKUPanelGate1, PrivacyTier: core.PrivacyInternalRaw, SHA256: sha256Hex(pngBytes), CapturedAt: time.Date(2026, 8, 4, 1, 2, 3, 0, time.UTC)}
+	for name, mutate := range map[string]func(*core.UploadMetadata){
+		"unknown attempt": func(value *core.UploadMetadata) { value.AttemptID = "53c9f507-7473-4fa6-8d71-8786c34c6301" },
+		"uppercase hash": func(value *core.UploadMetadata) {
+			value.SHA256 = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+		},
+		"wrong kind": func(value *core.UploadMetadata) { value.Kind = "ORDER_CONFIRM" },
+	} {
+		t.Run(name, func(t *testing.T) {
+			staged, err := store.Stage(bytes.NewReader(pngBytes), core.PNGContentType)
+			if err != nil {
+				t.Fatalf("Stage: %v", err)
+			}
+			metadata := base
+			mutate(&metadata)
+			if _, _, err := store.Commit(context.Background(), deviceauth.Principal{ID: testDeviceID}, metadata, staged); !errors.Is(err, core.ErrInvalid) {
+				t.Fatalf("Commit error = %v", err)
+			}
+		})
+	}
+	var count int
+	if err := database.QueryRow("SELECT COUNT(*) FROM evidence_assets").Scan(&count); err != nil || count != 0 {
+		t.Fatalf("invalid commits created %d assets, err %v", count, err)
+	}
+}
+
+func TestNewStoreRejectsRelativeAndFilesystemRootPaths(t *testing.T) {
+	database, _ := newTestStore(t)
+	if _, err := NewStore(database, "relative-evidence"); err == nil {
+		t.Fatal("relative evidence root succeeded")
+	}
+	volumeRoot := filepath.VolumeName(t.TempDir()) + string(filepath.Separator)
+	if _, err := NewStore(database, volumeRoot); err == nil {
+		t.Fatal("filesystem root succeeded")
+	}
+}
+
+type zeroReader struct{}
+
+func (zeroReader) Read(buffer []byte) (int, error) {
+	for index := range buffer {
+		buffer[index] = 0
+	}
+	return len(buffer), nil
+}
+
+func newTestStore(t *testing.T) (*sql.DB, *Store) {
+	t.Helper()
+	database, err := sqlite.Open(filepath.Join(t.TempDir(), "evidence.db"))
+	if err != nil {
+		t.Fatalf("open database: %v", err)
+	}
+	t.Cleanup(func() { _ = database.Close() })
+	_, file, _, ok := runtime.Caller(0)
+	if !ok {
+		t.Fatal("locate test")
+	}
+	directory := filepath.Join(filepath.Dir(file), "..", "..", "..", "migrations")
+	if err := migrations.Up(context.Background(), database, directory); err != nil {
+		t.Fatalf("migrate database: %v", err)
+	}
+	store, err := NewStore(database, filepath.Join(t.TempDir(), "assets"))
+	if err != nil {
+		t.Fatalf("NewStore: %v", err)
+	}
+	return database, store
+}
+
+func insertAttemptFixture(t *testing.T, database *sql.DB) {
+	t.Helper()
+	timestamp := "2026-08-04T00:00:00Z"
+	if _, err := database.Exec(`INSERT INTO tasks (id, source, title, goods_id, sku_color, sku_size, quantity, max_total_price, status, version, created_at, updated_at) VALUES (?, 'MANUAL', 'task', '123', 'black', 'M', 1, '1.00', 'DRAFT', 1, ?, ?)`, testTaskID, timestamp, timestamp); err != nil {
+		t.Fatalf("insert task: %v", err)
+	}
+	if _, err := database.Exec(`INSERT INTO order_authorizations (id, task_id, task_version, start_key, goods_id, sku_color, sku_size, quantity, total_price_cap, status, created_by, created_at, expires_at) VALUES (?, ?, 1, 'start', '123', 'black', 'M', 1, '1.00', 'ACTIVE', 'admin', ?, ?)`, testAuthID, testTaskID, timestamp, timestamp); err != nil {
+		t.Fatalf("insert authorization: %v", err)
+	}
+	if _, err := database.Exec(`INSERT INTO purchase_attempts (id, task_id, authorization_id, claim_generation, status, started_at) VALUES (?, ?, ?, 1, 'CLAIMED', ?)`, testAttemptID, testTaskID, testAuthID, timestamp); err != nil {
+		t.Fatalf("insert attempt: %v", err)
+	}
+}
+
+func testMetadata(hash string) core.UploadMetadata {
+	return core.UploadMetadata{
+		UploadKey: testUploadKey, TaskID: testTaskID, AttemptID: testAttemptID,
+		Kind: core.KindSKUPanelGate1, PrivacyTier: core.PrivacyInternalRaw, SHA256: hash,
+		CapturedAt: time.Date(2026, 8, 4, 1, 2, 3, 0, time.UTC),
+	}
+}
+
+func assertEvidenceCount(t *testing.T, database *sql.DB, want int) {
+	t.Helper()
+	var count int
+	if err := database.QueryRow("SELECT COUNT(*) FROM evidence_assets").Scan(&count); err != nil {
+		t.Fatalf("count evidence assets: %v", err)
+	}
+	if count != want {
+		t.Fatalf("evidence asset count = %d, want %d", count, want)
+	}
+}
+
+func assertNoPublishTemps(t *testing.T, directory string) {
+	t.Helper()
+	entries, err := os.ReadDir(directory)
+	if err != nil {
+		t.Fatalf("read shard directory: %v", err)
+	}
+	for _, entry := range entries {
+		if strings.HasPrefix(entry.Name(), ".publish-") {
+			t.Fatalf("publication temp leaked: %q", entry.Name())
+		}
+	}
+}
+
+func makePNG(t *testing.T, width, height int) []byte {
+	t.Helper()
+	imageData := image.NewNRGBA(image.Rect(0, 0, width, height))
+	imageData.Set(0, 0, color.NRGBA{R: 12, G: 34, B: 56, A: 255})
+	var buffer bytes.Buffer
+	if err := png.Encode(&buffer, imageData); err != nil {
+		t.Fatalf("encode PNG: %v", err)
+	}
+	return buffer.Bytes()
+}
+
+func sha256Hex(value []byte) string {
+	hash := sha256.Sum256(value)
+	return hex.EncodeToString(hash[:])
+}

admin/internal/storage/sqlite/sqlite.go

@@ -3,11 +3,33 @@ package sqlite
 
 import (
 	"database/sql"
+	"fmt"
 
-	_ "github.com/mattn/go-sqlite3"
+	"github.com/mattn/go-sqlite3"
 )
 
-// Open 打开 SQLite 数据源；调用方负责其 schema 与生命周期。
+const driverName = "cmbuyer-sqlite3"
+
+func init() {
+	sql.Register(driverName, &sqlite3.SQLiteDriver{
+		ConnectHook: func(connection *sqlite3.SQLiteConn) error {
+			_, err := connection.Exec("PRAGMA foreign_keys = ON", nil)
+			return err
+		},
+	})
+}
+
+// Open 打开 SQLite 数据源并逐连接启用外键，避免连接池配置遗漏而绕过授权与任务的引用约束。
 func Open(dataSourceName string) (*sql.DB, error) {
-	return sql.Open("sqlite3", dataSourceName)
+	database, err := sql.Open(driverName, dataSourceName)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := database.Ping(); err != nil {
+		_ = database.Close()
+		return nil, fmt.Errorf("ping SQLite database: %w", err)
+	}
+
+	return database, nil
 }

admin/internal/storage/sqlite/sqlite_test.go

@@ -21,4 +21,15 @@ func TestOpen(t *testing.T) {
 	if err := database.PingContext(context.Background()); err != nil {
 		t.Fatalf("ping SQLite database: %v", err)
 	}
+
+	database.SetMaxIdleConns(0)
+	for attempt := 0; attempt < 2; attempt++ {
+		var foreignKeysEnabled int
+		if err := database.QueryRow("PRAGMA foreign_keys").Scan(&foreignKeysEnabled); err != nil {
+			t.Fatalf("read SQLite foreign key setting: %v", err)
+		}
+		if foreignKeysEnabled != 1 {
+			t.Fatalf("SQLite foreign_keys = %d, want 1", foreignKeysEnabled)
+		}
+	}
 }

admin/internal/taskdetail/detail.go

@@ -0,0 +1,60 @@
+// Package taskdetail provides a read-only audit projection for one task.
+package taskdetail
+
+import (
+	"context"
+	"errors"
+	"time"
+)
+
+var ErrNotFound = errors.New("task detail not found")
+
+type Store interface {
+	Get(context.Context, string) (Detail, error)
+}
+
+type Detail struct {
+	Task           Task
+	Authorizations []Authorization
+	Attempts       []Attempt
+	Submissions    []Submission
+	Evidence       []Evidence
+}
+
+type Task struct {
+	ID, Source, Title, GoodsID, SKUColor, SKUSize, MaxTotalPrice, Status string
+	Quantity, Version                                                    int
+	CreatedAt, UpdatedAt                                                 time.Time
+}
+
+type Authorization struct {
+	ID, Status, CreatedBy, TotalPriceCap string
+	TaskVersion                          int
+	CreatedAt, ExpiresAt                 time.Time
+}
+
+type Attempt struct {
+	ID, AuthorizationID, Status string
+	ClaimGeneration             int
+	Gate1UnitPrice              *string
+	Gate2UnitPrice              *string
+	QuantityRead                *int
+	ConfirmAmount               *string
+	FailureCode                 *string
+	StartedAt                   time.Time
+	FinishedAt                  *time.Time
+}
+
+type Submission struct {
+	ID, AuthorizationID, AttemptID, Status        string
+	Gate1UnitPrice, Gate2UnitPrice, ConfirmAmount string
+	QuantityRead                                  int
+	CreatedAt                                     time.Time
+	ResolvedAt                                    *time.Time
+}
+
+type Evidence struct {
+	ID, AttemptID, Kind, PrivacyTier, SHA256, ContentType string
+	ByteSize, Width, Height                               int64
+	CapturedAt                                            time.Time
+}

admin/internal/taskdetail/store.go

@@ -0,0 +1,204 @@
+package taskdetail
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+	"time"
+)
+
+type SQLiteStore struct{ database *sql.DB }
+
+func NewSQLiteStore(database *sql.DB) (*SQLiteStore, error) {
+	if database == nil {
+		return nil, errors.New("task detail database is required")
+	}
+	if _, err := database.Exec("SELECT storage_key FROM evidence_assets LIMIT 1"); err != nil {
+		return nil, fmt.Errorf("task detail migration is not available: %w", err)
+	}
+	return &SQLiteStore{database: database}, nil
+}
+
+func (store *SQLiteStore) Get(ctx context.Context, id string) (Detail, error) {
+	if !validUUID(id) {
+		return Detail{}, ErrNotFound
+	}
+	tx, err := store.database.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
+	if err != nil {
+		return Detail{}, err
+	}
+	defer tx.Rollback()
+
+	var detail Detail
+	var created, updated string
+	err = tx.QueryRowContext(ctx, `SELECT id, source, title, goods_id, sku_color, sku_size, quantity, max_total_price, status, version, created_at, updated_at FROM tasks WHERE id = ?`, id).Scan(
+		&detail.Task.ID, &detail.Task.Source, &detail.Task.Title, &detail.Task.GoodsID, &detail.Task.SKUColor, &detail.Task.SKUSize,
+		&detail.Task.Quantity, &detail.Task.MaxTotalPrice, &detail.Task.Status, &detail.Task.Version, &created, &updated,
+	)
+	if errors.Is(err, sql.ErrNoRows) {
+		return Detail{}, ErrNotFound
+	}
+	if err != nil {
+		return Detail{}, err
+	}
+	if detail.Task.CreatedAt, err = parseTime(created); err != nil {
+		return Detail{}, err
+	}
+	if detail.Task.UpdatedAt, err = parseTime(updated); err != nil {
+		return Detail{}, err
+	}
+	if detail.Authorizations, err = readAuthorizations(ctx, tx, id); err != nil {
+		return Detail{}, err
+	}
+	if detail.Attempts, err = readAttempts(ctx, tx, id); err != nil {
+		return Detail{}, err
+	}
+	if detail.Submissions, err = readSubmissions(ctx, tx, id); err != nil {
+		return Detail{}, err
+	}
+	if detail.Evidence, err = readEvidence(ctx, tx, id); err != nil {
+		return Detail{}, err
+	}
+	if err := tx.Commit(); err != nil {
+		return Detail{}, err
+	}
+	return detail, nil
+}
+
+func readAuthorizations(ctx context.Context, tx *sql.Tx, taskID string) ([]Authorization, error) {
+	rows, err := tx.QueryContext(ctx, `SELECT id, task_version, total_price_cap, status, created_by, created_at, expires_at FROM order_authorizations WHERE task_id = ? ORDER BY created_at DESC, id DESC`, taskID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	result := []Authorization{}
+	for rows.Next() {
+		var item Authorization
+		var created, expires string
+		if err := rows.Scan(&item.ID, &item.TaskVersion, &item.TotalPriceCap, &item.Status, &item.CreatedBy, &created, &expires); err != nil {
+			return nil, err
+		}
+		if item.CreatedAt, err = parseTime(created); err != nil {
+			return nil, err
+		}
+		if item.ExpiresAt, err = parseTime(expires); err != nil {
+			return nil, err
+		}
+		result = append(result, item)
+	}
+	return result, rows.Err()
+}
+
+func readAttempts(ctx context.Context, tx *sql.Tx, taskID string) ([]Attempt, error) {
+	rows, err := tx.QueryContext(ctx, `SELECT id, authorization_id, claim_generation, status, gate1_unit_price, gate2_unit_price, quantity_read, confirm_amount, failure_code, started_at, finished_at FROM purchase_attempts WHERE task_id = ? ORDER BY started_at DESC, id DESC`, taskID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	result := []Attempt{}
+	for rows.Next() {
+		var item Attempt
+		var gate1, gate2, confirm, failure, finished sql.NullString
+		var quantity sql.NullInt64
+		var started string
+		if err := rows.Scan(&item.ID, &item.AuthorizationID, &item.ClaimGeneration, &item.Status, &gate1, &gate2, &quantity, &confirm, &failure, &started, &finished); err != nil {
+			return nil, err
+		}
+		item.Gate1UnitPrice, item.Gate2UnitPrice, item.ConfirmAmount, item.FailureCode = stringPointer(gate1), stringPointer(gate2), stringPointer(confirm), stringPointer(failure)
+		if quantity.Valid {
+			value := int(quantity.Int64)
+			item.QuantityRead = &value
+		}
+		if item.StartedAt, err = parseTime(started); err != nil {
+			return nil, err
+		}
+		if finished.Valid {
+			value, parseErr := parseTime(finished.String)
+			if parseErr != nil {
+				return nil, parseErr
+			}
+			item.FinishedAt = &value
+		}
+		result = append(result, item)
+	}
+	return result, rows.Err()
+}
+
+func readSubmissions(ctx context.Context, tx *sql.Tx, taskID string) ([]Submission, error) {
+	rows, err := tx.QueryContext(ctx, `SELECT id, authorization_id, attempt_id, status, gate1_unit_price, gate2_unit_price, quantity_read, confirm_amount, created_at, resolved_at FROM order_submissions WHERE task_id = ? ORDER BY created_at DESC, id DESC`, taskID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	result := []Submission{}
+	for rows.Next() {
+		var item Submission
+		var created string
+		var resolved sql.NullString
+		if err := rows.Scan(&item.ID, &item.AuthorizationID, &item.AttemptID, &item.Status, &item.Gate1UnitPrice, &item.Gate2UnitPrice, &item.QuantityRead, &item.ConfirmAmount, &created, &resolved); err != nil {
+			return nil, err
+		}
+		if item.CreatedAt, err = parseTime(created); err != nil {
+			return nil, err
+		}
+		if resolved.Valid {
+			value, parseErr := parseTime(resolved.String)
+			if parseErr != nil {
+				return nil, parseErr
+			}
+			item.ResolvedAt = &value
+		}
+		result = append(result, item)
+	}
+	return result, rows.Err()
+}
+
+func readEvidence(ctx context.Context, tx *sql.Tx, taskID string) ([]Evidence, error) {
+	rows, err := tx.QueryContext(ctx, `SELECT id, attempt_id, kind, privacy_tier, sha256, byte_size, content_type, width_px, height_px, captured_at FROM evidence_assets WHERE task_id = ? ORDER BY captured_at, created_at, id`, taskID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	result := []Evidence{}
+	for rows.Next() {
+		var item Evidence
+		var captured string
+		if err := rows.Scan(&item.ID, &item.AttemptID, &item.Kind, &item.PrivacyTier, &item.SHA256, &item.ByteSize, &item.ContentType, &item.Width, &item.Height, &captured); err != nil {
+			return nil, err
+		}
+		if item.CapturedAt, err = parseTime(captured); err != nil {
+			return nil, err
+		}
+		result = append(result, item)
+	}
+	return result, rows.Err()
+}
+
+func parseTime(value string) (time.Time, error) { return time.Parse(time.RFC3339Nano, value) }
+
+func stringPointer(value sql.NullString) *string {
+	if !value.Valid {
+		return nil
+	}
+	copy := value.String
+	return &copy
+}
+
+func validUUID(value string) bool {
+	if len(value) != 36 {
+		return false
+	}
+	for index, character := range value {
+		if index == 8 || index == 13 || index == 18 || index == 23 {
+			if character != '-' {
+				return false
+			}
+			continue
+		}
+		if !(character >= '0' && character <= '9' || character >= 'a' && character <= 'f') {
+			return false
+		}
+	}
+	return value[14] == '4' && (value[19] == '8' || value[19] == '9' || value[19] == 'a' || value[19] == 'b')
+}

admin/internal/taskdetail/store_test.go

@@ -0,0 +1,82 @@
+package taskdetail
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"testing"
+
+	"cmbuyer/admin/internal/migrations"
+	"cmbuyer/admin/internal/storage/sqlite"
+)
+
+const (
+	detailTask = "a3c9f507-7473-4fa6-8d71-8786c34c6301"
+	detailAuth = "b3c9f507-7473-4fa6-8d71-8786c34c6301"
+	detailTry  = "c3c9f507-7473-4fa6-8d71-8786c34c6301"
+)
+
+func TestSQLiteStoreReturnsOnlyPersistedAuditFacts(t *testing.T) {
+	database := openDetailDatabase(t)
+	timestamp := "2026-08-04T00:00:00Z"
+	if _, err := database.Exec(`INSERT INTO tasks (id, source, title, goods_id, sku_color, sku_size, quantity, max_total_price, status, version, created_at, updated_at) VALUES (?, 'MANUAL', 'shirt', '123', 'black', 'M', 2, '30.00', 'CLAIMED', 3, ?, ?)`, detailTask, timestamp, timestamp); err != nil {
+		t.Fatalf("insert task: %v", err)
+	}
+	if _, err := database.Exec(`INSERT INTO order_authorizations (id, task_id, task_version, start_key, goods_id, sku_color, sku_size, quantity, total_price_cap, status, created_by, created_at, expires_at) VALUES (?, ?, 2, 'start', '123', 'black', 'M', 2, '30.00', 'CLAIMED', 'admin', ?, ?)`, detailAuth, detailTask, timestamp, timestamp); err != nil {
+		t.Fatalf("insert authorization: %v", err)
+	}
+	if _, err := database.Exec(`INSERT INTO purchase_attempts (id, task_id, authorization_id, claim_generation, status, started_at) VALUES (?, ?, ?, 1, 'CLAIMED', ?)`, detailTry, detailTask, detailAuth, timestamp); err != nil {
+		t.Fatalf("insert attempt: %v", err)
+	}
+	hash := strings.Repeat("a", 64)
+	if _, err := database.Exec(`INSERT INTO evidence_assets (id, upload_key, task_id, attempt_id, kind, privacy_tier, sha256, byte_size, content_type, width_px, height_px, storage_key, uploaded_by_device_id, captured_at, created_at) VALUES ('d3c9f507-7473-4fa6-8d71-8786c34c6301', 'upload', ?, ?, 'SKU_PANEL_GATE_1', 'INTERNAL_RAW', ?, 100, 'image/png', 10, 20, ?, 'device', ?, ?)`, detailTask, detailTry, hash, "aa/"+hash+".png", timestamp, timestamp); err != nil {
+		t.Fatalf("insert evidence: %v", err)
+	}
+	store, err := NewSQLiteStore(database)
+	if err != nil {
+		t.Fatalf("NewSQLiteStore: %v", err)
+	}
+	detail, err := store.Get(context.Background(), detailTask)
+	if err != nil {
+		t.Fatalf("Get: %v", err)
+	}
+	if detail.Task.ID != detailTask || detail.Task.Status != "CLAIMED" || len(detail.Authorizations) != 1 || len(detail.Attempts) != 1 || len(detail.Evidence) != 1 || len(detail.Submissions) != 0 {
+		t.Fatalf("detail = %#v", detail)
+	}
+	if detail.Attempts[0].Gate1UnitPrice != nil || detail.Attempts[0].FailureCode != nil {
+		t.Fatalf("missing attempt facts were fabricated: %#v", detail.Attempts[0])
+	}
+}
+
+func TestSQLiteStoreFailsClosedForMalformedAndMissingIDs(t *testing.T) {
+	database := openDetailDatabase(t)
+	store, err := NewSQLiteStore(database)
+	if err != nil {
+		t.Fatalf("NewSQLiteStore: %v", err)
+	}
+	for _, id := range []string{"../database", "not-a-uuid", "a3c9f507-7473-1fa6-8d71-8786c34c6301"} {
+		if _, err := store.Get(context.Background(), id); !errors.Is(err, ErrNotFound) {
+			t.Fatalf("Get(%q) error = %v", id, err)
+		}
+	}
+}
+
+func openDetailDatabase(t *testing.T) *sql.DB {
+	t.Helper()
+	database, err := sqlite.Open(filepath.Join(t.TempDir(), "details.db"))
+	if err != nil {
+		t.Fatalf("open database: %v", err)
+	}
+	t.Cleanup(func() { _ = database.Close() })
+	_, file, _, ok := runtime.Caller(0)
+	if !ok {
+		t.Fatal("locate migration directory")
+	}
+	if err := migrations.Up(context.Background(), database, filepath.Join(filepath.Dir(file), "..", "..", "migrations")); err != nil {
+		t.Fatalf("migrate database: %v", err)
+	}
+	return database
+}

admin/internal/tasks/authorization.go

@@ -0,0 +1,128 @@
+package tasks
+
+import (
+	"errors"
+	"math"
+	"math/big"
+	"sort"
+	"strings"
+	"time"
+	_ "time/tzdata"
+)
+
+const maxStartItems = 100
+
+var (
+	ErrStartConflict = errors.New("purchase start conflicts with current task state")
+	ErrInvalidStart  = errors.New("invalid purchase start request")
+)
+
+type StartPolicy struct {
+	AuthorizationTTL time.Duration
+	MaxQuantity      int
+	MaxTotalPrice    string
+}
+type StartItem struct {
+	TaskID              string `json:"task_id"`
+	ExpectedTaskVersion int    `json:"expected_task_version"`
+}
+type StartCommand struct {
+	StartKey string      `json:"start_key"`
+	Tasks    []StartItem `json:"tasks"`
+}
+type AuthorizedTask struct {
+	TaskID          string    `json:"task_id"`
+	TaskVersion     int       `json:"task_version"`
+	AuthorizationID string    `json:"authorization_id"`
+	ExpiresAt       time.Time `json:"expires_at"`
+}
+type StartResult struct {
+	StartKey         string           `json:"start_key"`
+	AuthorizedCount  int              `json:"authorized_count"`
+	Tasks            []AuthorizedTask `json:"tasks"`
+	PaymentAutomated bool             `json:"payment_automated"`
+}
+type TaskFilter struct{ Keyword, Status, CreatedFrom, CreatedTo string }
+type TaskRow struct {
+	ID, Title, GoodsID, SKUColor, SKUSize, MaxTotalPrice, Status string
+	Quantity, Version                                            int
+	CreatedAt                                                    time.Time
+}
+
+func normalizeCents(value string) (string, *big.Int, bool) {
+	if value == "" || strings.TrimSpace(value) != value {
+		return "", nil, false
+	}
+	parts := strings.Split(value, ".")
+	if len(parts) != 2 || len(parts[0]) == 0 || len(parts[1]) != 2 || (len(parts[0]) > 1 && parts[0][0] == '0') {
+		return "", nil, false
+	}
+	for _, part := range parts {
+		for _, ch := range part {
+			if ch < '0' || ch > '9' {
+				return "", nil, false
+			}
+		}
+	}
+	cents := new(big.Int)
+	if _, ok := cents.SetString(parts[0]+parts[1], 10); !ok || cents.Sign() <= 0 {
+		return "", nil, false
+	}
+	return value, cents, true
+}
+
+func startItems(command StartCommand) ([]StartItem, error) {
+	if !validUUID(command.StartKey) || len(command.Tasks) == 0 || len(command.Tasks) > maxStartItems {
+		return nil, ErrInvalidStart
+	}
+	items := append([]StartItem(nil), command.Tasks...)
+	sort.Slice(items, func(i, j int) bool { return items[i].TaskID < items[j].TaskID })
+	for i, item := range items {
+		if !validUUID(item.TaskID) || item.ExpectedTaskVersion <= 0 || item.ExpectedTaskVersion == math.MaxInt || (i > 0 && item.TaskID == items[i-1].TaskID) {
+			return nil, ErrInvalidStart
+		}
+	}
+	return items, nil
+}
+
+func validTaskStatus(value string) bool {
+	if value == "" {
+		return true
+	}
+	for _, status := range []string{"DRAFT", "PENDING", "CLAIMED", "ORDERING", "NEEDS_MANUAL", "WAITING_PAYMENT", "RECONCILIATION_REQUIRED", "SUCCEEDED", "FAILED", "CANCELED"} {
+		if value == status {
+			return true
+		}
+	}
+	return false
+}
+
+func ShanghaiRange(from, to string) (time.Time, time.Time, error) {
+	if from == "" && to == "" {
+		return time.Time{}, time.Time{}, nil
+	}
+	location, err := time.LoadLocation("Asia/Shanghai")
+	if err != nil {
+		return time.Time{}, time.Time{}, err
+	}
+	parse := func(value string) (time.Time, error) { return time.ParseInLocation("2006-01-02", value, location) }
+	var start, end time.Time
+	if from != "" {
+		start, err = parse(from)
+		if err != nil {
+			return time.Time{}, time.Time{}, ErrInvalidStart
+		}
+		start = start.UTC()
+	}
+	if to != "" {
+		end, err = parse(to)
+		if err != nil {
+			return time.Time{}, time.Time{}, ErrInvalidStart
+		}
+		end = end.AddDate(0, 0, 1).UTC()
+	}
+	if !start.IsZero() && !end.IsZero() && !start.Before(end) {
+		return time.Time{}, time.Time{}, ErrInvalidStart
+	}
+	return start, end, nil
+}

admin/internal/tasks/start_purchases_store_test.go

@@ -0,0 +1,424 @@
+package tasks
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+	"math"
+	"reflect"
+	"sort"
+	"sync"
+	"testing"
+	"time"
+
+	"cmbuyer/admin/internal/migrations"
+)
+
+var fixedStartTime = time.Date(2026, 8, 4, 9, 2, 3, 456000000, time.FixedZone("UTC+8", 8*60*60))
+
+func TestStartPurchasesPersistsCompleteSnapshotsForOneAndHundredTasks(t *testing.T) {
+	for _, count := range []int{1, 100} {
+		t.Run(fmt.Sprintf("%d tasks", count), func(t *testing.T) {
+			database := migratedDatabase(t)
+			store := configuredStartStore(t, database)
+			store.now = func() time.Time { return fixedStartTime }
+			items := make([]StartItem, 0, count)
+			wantDrafts := make(map[string]Draft, count)
+			for index := 1; index <= count; index++ {
+				id := startTestUUID(index)
+				draft := Draft{
+					ID:            id,
+					Title:         fmt.Sprintf("task-%03d", index),
+					GoodsID:       fmt.Sprintf("937122%06d", index),
+					SKUColor:      fmt.Sprintf("color-%03d", index),
+					SKUSize:       fmt.Sprintf("size-%03d", index),
+					Quantity:      index%10 + 1,
+					MaxTotalPrice: fmt.Sprintf("%d.%02d", index+10, index%100),
+				}
+				if _, err := store.CreateDraft(context.Background(), draft); err != nil {
+					t.Fatalf("create draft %d: %v", index, err)
+				}
+				items = append(items, StartItem{TaskID: id, ExpectedTaskVersion: 1})
+				wantDrafts[id] = draft
+			}
+			sort.Slice(items, func(i, j int) bool { return items[i].TaskID > items[j].TaskID })
+			command := StartCommand{StartKey: startTestUUID(1001 + count), Tasks: items}
+
+			result, err := store.StartPurchases(context.Background(), command, "authenticated-admin")
+			if err != nil {
+				t.Fatalf("StartPurchases: %v", err)
+			}
+			if result.StartKey != command.StartKey || result.AuthorizedCount != count || result.PaymentAutomated || len(result.Tasks) != count {
+				t.Fatalf("result = %#v", result)
+			}
+			wantCreated := fixedStartTime.UTC()
+			wantExpires := wantCreated.Add(15 * time.Minute)
+			seenAuthorizationIDs := map[string]bool{}
+			for index, authorized := range result.Tasks {
+				if index > 0 && result.Tasks[index-1].TaskID >= authorized.TaskID {
+					t.Fatalf("result is not in canonical task order: %#v", result.Tasks)
+				}
+				if authorized.TaskVersion != 2 || !authorized.ExpiresAt.Equal(wantExpires) || !validUUID(authorized.AuthorizationID) || seenAuthorizationIDs[authorized.AuthorizationID] {
+					t.Fatalf("authorized task = %#v", authorized)
+				}
+				seenAuthorizationIDs[authorized.AuthorizationID] = true
+				want := wantDrafts[authorized.TaskID]
+				var taskStatus, taskUpdated, authTaskID, authStartKey, goodsID, color, size, priceCap, authStatus, createdBy, createdAt, expiresAt string
+				var taskVersion, authTaskVersion, quantity int
+				err := database.QueryRow(`
+					SELECT t.status,t.version,t.updated_at,
+					       a.task_id,a.task_version,a.start_key,a.goods_id,a.sku_color,a.sku_size,a.quantity,a.total_price_cap,a.status,a.created_by,a.created_at,a.expires_at
+					FROM tasks t JOIN order_authorizations a ON a.task_id=t.id WHERE a.id=?`, authorized.AuthorizationID).
+					Scan(&taskStatus, &taskVersion, &taskUpdated, &authTaskID, &authTaskVersion, &authStartKey, &goodsID, &color, &size, &quantity, &priceCap, &authStatus, &createdBy, &createdAt, &expiresAt)
+				if err != nil {
+					t.Fatalf("read authorization snapshot: %v", err)
+				}
+				if taskStatus != "PENDING" || taskVersion != 2 || taskUpdated != wantCreated.Format(time.RFC3339Nano) ||
+					authTaskID != want.ID || authTaskVersion != 2 || authStartKey != command.StartKey ||
+					goodsID != want.GoodsID || color != want.SKUColor || size != want.SKUSize || quantity != want.Quantity || priceCap != want.MaxTotalPrice ||
+					authStatus != "ACTIVE" || createdBy != "authenticated-admin" || createdAt != wantCreated.Format(time.RFC3339Nano) || expiresAt != wantExpires.Format(time.RFC3339Nano) {
+					t.Fatalf("stored task/authorization mismatch for %s", want.ID)
+				}
+			}
+			var distinctCreated, distinctExpires int
+			if err := database.QueryRow(`SELECT COUNT(DISTINCT created_at), COUNT(DISTINCT expires_at) FROM order_authorizations WHERE start_key=?`, command.StartKey).Scan(&distinctCreated, &distinctExpires); err != nil {
+				t.Fatal(err)
+			}
+			if distinctCreated != 1 || distinctExpires != 1 {
+				t.Fatalf("batch timestamps are not shared: created=%d expires=%d", distinctCreated, distinctExpires)
+			}
+		})
+	}
+}
+
+func TestStartPurchasesRejectsInvalidCommandsAndPolicyWithoutWrites(t *testing.T) {
+	validItem := StartItem{TaskID: startTestUUID(1), ExpectedTaskVersion: 1}
+	hundredOne := make([]StartItem, 101)
+	for index := range hundredOne {
+		hundredOne[index] = StartItem{TaskID: startTestUUID(index + 1), ExpectedTaskVersion: 1}
+	}
+	for name, command := range map[string]StartCommand{
+		"invalid start key": {StartKey: "not-a-uuid", Tasks: []StartItem{validItem}},
+		"empty tasks":       {StartKey: startTestUUID(1001)},
+		"over batch limit":  {StartKey: startTestUUID(1001), Tasks: hundredOne},
+		"invalid task id":   {StartKey: startTestUUID(1001), Tasks: []StartItem{{TaskID: "1", ExpectedTaskVersion: 1}}},
+		"duplicate task":    {StartKey: startTestUUID(1001), Tasks: []StartItem{validItem, validItem}},
+		"zero version":      {StartKey: startTestUUID(1001), Tasks: []StartItem{{TaskID: validItem.TaskID}}},
+		"overflow version":  {StartKey: startTestUUID(1001), Tasks: []StartItem{{TaskID: validItem.TaskID, ExpectedTaskVersion: math.MaxInt}}},
+	} {
+		t.Run(name, func(t *testing.T) {
+			database := migratedDatabase(t)
+			store := configuredStartStore(t, database)
+			_, err := store.StartPurchases(context.Background(), command, "admin")
+			if !errors.Is(err, ErrInvalidStart) {
+				t.Fatalf("error = %v, want ErrInvalidStart", err)
+			}
+			assertAuthorizationCount(t, database, 0)
+		})
+	}
+
+	for name, mutate := range map[string]func(*SQLiteStore){
+		"zero ttl":      func(store *SQLiteStore) { store.policy.AuthorizationTTL = 0 },
+		"zero quantity": func(store *SQLiteStore) { store.policy.MaxQuantity = 0 },
+		"bad max price": func(store *SQLiteStore) { store.policy.MaxTotalPrice = "999" },
+	} {
+		t.Run(name, func(t *testing.T) {
+			database := migratedDatabase(t)
+			store := configuredStartStore(t, database)
+			createStartDraft(t, store, validItem.TaskID)
+			mutate(store)
+			_, err := store.StartPurchases(context.Background(), StartCommand{StartKey: startTestUUID(1001), Tasks: []StartItem{validItem}}, "admin")
+			if !errors.Is(err, ErrInvalidStart) {
+				t.Fatalf("error = %v, want ErrInvalidStart", err)
+			}
+			assertDraftUnchanged(t, database, validItem.TaskID)
+			assertAuthorizationCount(t, database, 0)
+		})
+	}
+
+	database := migratedDatabase(t)
+	store := configuredStartStore(t, database)
+	createStartDraft(t, store, validItem.TaskID)
+	_, err := store.StartPurchases(context.Background(), StartCommand{StartKey: startTestUUID(1001), Tasks: []StartItem{validItem}}, "")
+	if !errors.Is(err, ErrInvalidStart) {
+		t.Fatalf("empty created_by error = %v", err)
+	}
+	assertDraftUnchanged(t, database, validItem.TaskID)
+}
+
+func TestStartPurchasesRejectsEveryTaskConflictWithoutAuthorization(t *testing.T) {
+	for name, mutate := range map[string]func(*testing.T, *SQLiteStore, string, *StartItem){
+		"missing": func(_ *testing.T, _ *SQLiteStore, _ string, item *StartItem) {
+			item.TaskID = startTestUUID(99)
+		},
+		"not draft": func(t *testing.T, store *SQLiteStore, id string, _ *StartItem) {
+			execTestSQL(t, store.database, `UPDATE tasks SET status='PENDING' WHERE id=?`, id)
+		},
+		"version mismatch": func(_ *testing.T, _ *SQLiteStore, _ string, item *StartItem) {
+			item.ExpectedTaskVersion = 2
+		},
+		"empty goods id": func(t *testing.T, store *SQLiteStore, id string, _ *StartItem) {
+			execTestSQL(t, store.database, `UPDATE tasks SET goods_id='' WHERE id=?`, id)
+		},
+		"nondigit goods id": func(t *testing.T, store *SQLiteStore, id string, _ *StartItem) {
+			execTestSQL(t, store.database, `UPDATE tasks SET goods_id='937x' WHERE id=?`, id)
+		},
+		"empty color": func(t *testing.T, store *SQLiteStore, id string, _ *StartItem) {
+			execTestSQL(t, store.database, `UPDATE tasks SET sku_color='' WHERE id=?`, id)
+		},
+		"empty size": func(t *testing.T, store *SQLiteStore, id string, _ *StartItem) {
+			execTestSQL(t, store.database, `UPDATE tasks SET sku_size='' WHERE id=?`, id)
+		},
+		"quantity over policy": func(_ *testing.T, store *SQLiteStore, _ string, _ *StartItem) {
+			store.policy.MaxQuantity = 1
+		},
+		"noncanonical price one decimal": func(t *testing.T, store *SQLiteStore, id string, _ *StartItem) {
+			execTestSQL(t, store.database, `UPDATE tasks SET max_total_price='12.8' WHERE id=?`, id)
+		},
+		"noncanonical leading zero": func(t *testing.T, store *SQLiteStore, id string, _ *StartItem) {
+			execTestSQL(t, store.database, `UPDATE tasks SET max_total_price='012.80' WHERE id=?`, id)
+		},
+		"price over policy": func(_ *testing.T, store *SQLiteStore, _ string, _ *StartItem) {
+			store.policy.MaxTotalPrice = "12.79"
+		},
+	} {
+		t.Run(name, func(t *testing.T) {
+			database := migratedDatabase(t)
+			store := configuredStartStore(t, database)
+			id := startTestUUID(1)
+			createStartDraft(t, store, id)
+			item := StartItem{TaskID: id, ExpectedTaskVersion: 1}
+			mutate(t, store, id, &item)
+			_, err := store.StartPurchases(context.Background(), StartCommand{StartKey: startTestUUID(1001), Tasks: []StartItem{item}}, "admin")
+			if !errors.Is(err, ErrStartConflict) {
+				t.Fatalf("error = %v, want ErrStartConflict", err)
+			}
+			assertAuthorizationCount(t, database, 0)
+		})
+	}
+}
+
+func TestStartPurchasesRollsBackWholeBatchForLateConflictAndSQLFailure(t *testing.T) {
+	for _, test := range []struct {
+		name       string
+		breakBatch func(*testing.T, *SQLiteStore, string)
+	}{
+		{name: "late validation conflict", breakBatch: func(t *testing.T, store *SQLiteStore, secondID string) {
+			execTestSQL(t, store.database, `UPDATE tasks SET sku_size='' WHERE id=?`, secondID)
+		}},
+		{name: "late SQL failure", breakBatch: func(t *testing.T, store *SQLiteStore, secondID string) {
+			statement := fmt.Sprintf(`CREATE TRIGGER reject_second_authorization BEFORE INSERT ON order_authorizations WHEN NEW.task_id='%s' BEGIN SELECT RAISE(ABORT, 'test failure'); END`, secondID)
+			execTestSQL(t, store.database, statement)
+		}},
+	} {
+		t.Run(test.name, func(t *testing.T) {
+			database := migratedDatabase(t)
+			store := configuredStartStore(t, database)
+			firstID, secondID := startTestUUID(1), startTestUUID(2)
+			createStartDraft(t, store, firstID)
+			createStartDraft(t, store, secondID)
+			test.breakBatch(t, store, secondID)
+			_, err := store.StartPurchases(context.Background(), StartCommand{StartKey: startTestUUID(1001), Tasks: []StartItem{{TaskID: firstID, ExpectedTaskVersion: 1}, {TaskID: secondID, ExpectedTaskVersion: 1}}}, "admin")
+			if err == nil {
+				t.Fatal("StartPurchases unexpectedly succeeded")
+			}
+			assertDraftUnchanged(t, database, firstID)
+			var secondStatus string
+			var secondVersion int
+			if err := database.QueryRow(`SELECT status,version FROM tasks WHERE id=?`, secondID).Scan(&secondStatus, &secondVersion); err != nil {
+				t.Fatal(err)
+			}
+			if secondStatus != "DRAFT" || secondVersion != 1 {
+				t.Fatalf("second task = %s/v%d, want DRAFT/v1", secondStatus, secondVersion)
+			}
+			assertAuthorizationCount(t, database, 0)
+		})
+	}
+}
+
+func TestStartPurchasesReplayIsStableAndRejectsDifferentOrIncompleteSets(t *testing.T) {
+	database := migratedDatabase(t)
+	store := configuredStartStore(t, database)
+	firstID, secondID, thirdID := startTestUUID(1), startTestUUID(2), startTestUUID(3)
+	for _, id := range []string{firstID, secondID, thirdID} {
+		createStartDraft(t, store, id)
+	}
+	command := StartCommand{StartKey: startTestUUID(1001), Tasks: []StartItem{{TaskID: secondID, ExpectedTaskVersion: 1}, {TaskID: firstID, ExpectedTaskVersion: 1}}}
+	first, err := store.StartPurchases(context.Background(), command, "admin")
+	if err != nil {
+		t.Fatal(err)
+	}
+	command.Tasks[0], command.Tasks[1] = command.Tasks[1], command.Tasks[0]
+	replay, err := store.StartPurchases(context.Background(), command, "admin")
+	if err != nil || !reflect.DeepEqual(replay, first) {
+		t.Fatalf("replay = (%#v, %v), want %#v", replay, err, first)
+	}
+	assertAuthorizationCount(t, database, 2)
+
+	conflicting := []StartCommand{
+		{StartKey: command.StartKey, Tasks: command.Tasks[:1]},
+		{StartKey: command.StartKey, Tasks: []StartItem{{TaskID: firstID, ExpectedTaskVersion: 2}, {TaskID: secondID, ExpectedTaskVersion: 1}}},
+		{StartKey: command.StartKey, Tasks: []StartItem{{TaskID: firstID, ExpectedTaskVersion: 1}, {TaskID: secondID, ExpectedTaskVersion: 1}, {TaskID: thirdID, ExpectedTaskVersion: 1}}},
+	}
+	for _, changed := range conflicting {
+		if _, err := store.StartPurchases(context.Background(), changed, "admin"); !errors.Is(err, ErrStartConflict) {
+			t.Fatalf("different payload error = %v", err)
+		}
+	}
+	assertAuthorizationCount(t, database, 2)
+	assertDraftUnchanged(t, database, thirdID)
+
+	execTestSQL(t, database, `DELETE FROM order_authorizations WHERE task_id=?`, secondID)
+	if _, err := store.StartPurchases(context.Background(), command, "admin"); !errors.Is(err, ErrStartConflict) {
+		t.Fatalf("incomplete replay error = %v", err)
+	}
+	assertAuthorizationCount(t, database, 1)
+}
+
+func TestStartPurchasesConcurrentReplayAndVersionRace(t *testing.T) {
+	t.Run("same key replays one stable result", func(t *testing.T) {
+		database := migratedDatabase(t)
+		store := configuredStartStore(t, database)
+		id := startTestUUID(1)
+		createStartDraft(t, store, id)
+		command := StartCommand{StartKey: startTestUUID(1001), Tasks: []StartItem{{TaskID: id, ExpectedTaskVersion: 1}}}
+		const callers = 16
+		start := make(chan struct{})
+		results := make(chan StartResult, callers)
+		errorsChannel := make(chan error, callers)
+		var group sync.WaitGroup
+		for range callers {
+			group.Add(1)
+			go func() {
+				defer group.Done()
+				<-start
+				result, err := store.StartPurchases(context.Background(), command, "admin")
+				if err != nil {
+					errorsChannel <- err
+					return
+				}
+				results <- result
+			}()
+		}
+		close(start)
+		group.Wait()
+		close(results)
+		close(errorsChannel)
+		for err := range errorsChannel {
+			t.Fatalf("concurrent replay: %v", err)
+		}
+		var want StartResult
+		for result := range results {
+			if want.StartKey == "" {
+				want = result
+			} else if !reflect.DeepEqual(result, want) {
+				t.Fatalf("unstable replay: %#v != %#v", result, want)
+			}
+		}
+		assertAuthorizationCount(t, database, 1)
+		var version int
+		if err := database.QueryRow(`SELECT version FROM tasks WHERE id=?`, id).Scan(&version); err != nil || version != 2 {
+			t.Fatalf("task version = %d, err=%v", version, err)
+		}
+	})
+
+	t.Run("different keys race one expected version", func(t *testing.T) {
+		database := migratedDatabase(t)
+		store := configuredStartStore(t, database)
+		id := startTestUUID(1)
+		createStartDraft(t, store, id)
+		start := make(chan struct{})
+		errorsChannel := make(chan error, 2)
+		var group sync.WaitGroup
+		for _, key := range []string{startTestUUID(1001), startTestUUID(1002)} {
+			group.Add(1)
+			go func(startKey string) {
+				defer group.Done()
+				<-start
+				_, err := store.StartPurchases(context.Background(), StartCommand{StartKey: startKey, Tasks: []StartItem{{TaskID: id, ExpectedTaskVersion: 1}}}, "admin")
+				errorsChannel <- err
+			}(key)
+		}
+		close(start)
+		group.Wait()
+		close(errorsChannel)
+		successes, conflicts := 0, 0
+		for err := range errorsChannel {
+			switch {
+			case err == nil:
+				successes++
+			case errors.Is(err, ErrStartConflict):
+				conflicts++
+			default:
+				t.Fatalf("unexpected race error: %v", err)
+			}
+		}
+		if successes != 1 || conflicts != 1 {
+			t.Fatalf("success/conflict = %d/%d, want 1/1", successes, conflicts)
+		}
+		assertAuthorizationCount(t, database, 1)
+	})
+}
+
+func TestSQLiteStoreRejectsV1SchemaAtStartup(t *testing.T) {
+	database := openDatabase(t)
+	if err := migrations.Run(context.Background(), database, migrationDirectory(t), "up-by-one"); err != nil {
+		t.Fatalf("migrate to v1: %v", err)
+	}
+	if _, err := NewSQLiteStore(database); err == nil {
+		t.Fatal("NewSQLiteStore accepted the v1 two-pass schema")
+	}
+}
+
+func configuredStartStore(t *testing.T, database *sql.DB) *SQLiteStore {
+	t.Helper()
+	store, err := NewSQLiteStore(database)
+	if err != nil {
+		t.Fatalf("NewSQLiteStore: %v", err)
+	}
+	store.SetStartPolicy(StartPolicy{AuthorizationTTL: 15 * time.Minute, MaxQuantity: 10, MaxTotalPrice: "999.99"})
+	return store
+}
+
+func createStartDraft(t *testing.T, store *SQLiteStore, id string) {
+	t.Helper()
+	draft := Draft{ID: id, Title: "test", GoodsID: "937122477375", SKUColor: "黑色", SKUSize: "M", Quantity: 2, MaxTotalPrice: "12.80"}
+	if _, err := store.CreateDraft(context.Background(), draft); err != nil {
+		t.Fatalf("CreateDraft: %v", err)
+	}
+}
+
+func startTestUUID(number int) string {
+	return fmt.Sprintf("%08x-1234-4abc-a123-%012x", number, number)
+}
+
+func assertAuthorizationCount(t *testing.T, database *sql.DB, want int) {
+	t.Helper()
+	var got int
+	if err := database.QueryRow(`SELECT COUNT(*) FROM order_authorizations`).Scan(&got); err != nil {
+		t.Fatal(err)
+	}
+	if got != want {
+		t.Fatalf("authorization count = %d, want %d", got, want)
+	}
+}
+
+func assertDraftUnchanged(t *testing.T, database *sql.DB, id string) {
+	t.Helper()
+	var status string
+	var version int
+	if err := database.QueryRow(`SELECT status,version FROM tasks WHERE id=?`, id).Scan(&status, &version); err != nil {
+		t.Fatal(err)
+	}
+	if status != "DRAFT" || version != 1 {
+		t.Fatalf("task %s = %s/v%d, want DRAFT/v1", id, status, version)
+	}
+}
+
+func execTestSQL(t *testing.T, database *sql.DB, statement string, arguments ...any) {
+	t.Helper()
+	if _, err := database.Exec(statement, arguments...); err != nil {
+		t.Fatalf("execute test SQL: %v", err)
+	}
+}

admin/internal/tasks/start_store.go

@@ -0,0 +1,229 @@
+package tasks
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"strings"
+	"time"
+
+	"cmbuyer/admin/internal/domain"
+)
+
+// ErrInvalidFilter 表示任务筛选值无效，路由应按字段重新渲染而不是泄露内部错误。
+var ErrInvalidFilter = errors.New("invalid task filter")
+
+// SetStartPolicy is called during startup; policy is explicit because authorization limits must not be implicit defaults.
+func (store *SQLiteStore) SetStartPolicy(policy StartPolicy) { store.policy = policy }
+
+func (store *SQLiteStore) ListTasks(ctx context.Context, filter TaskFilter) ([]TaskRow, error) {
+	if !ValidateTaskFilter(filter).Valid() {
+		return nil, ErrInvalidFilter
+	}
+	from, to, err := ShanghaiRange(filter.CreatedFrom, filter.CreatedTo)
+	if err != nil {
+		return nil, ErrInvalidFilter
+	}
+	clauses, args := []string{"1=1"}, []any{}
+	if filter.Status != "" {
+		clauses = append(clauses, "status = ?")
+		args = append(args, filter.Status)
+	}
+	if filter.Keyword != "" {
+		escaped := strings.NewReplacer("\\", "\\\\", "%", "\\%", "_", "\\_").Replace(filter.Keyword)
+		clauses = append(clauses, "(title LIKE ? ESCAPE '\\' OR goods_id LIKE ? ESCAPE '\\')")
+		args = append(args, "%"+escaped+"%", "%"+escaped+"%")
+	}
+	if !from.IsZero() {
+		clauses = append(clauses, "julianday(created_at) >= julianday(?)")
+		args = append(args, from.Format(time.RFC3339Nano))
+	}
+	if !to.IsZero() {
+		clauses = append(clauses, "julianday(created_at) < julianday(?)")
+		args = append(args, to.Format(time.RFC3339Nano))
+	}
+	rows, err := store.database.QueryContext(ctx, "SELECT id,title,goods_id,sku_color,sku_size,quantity,max_total_price,status,version,created_at FROM tasks WHERE "+strings.Join(clauses, " AND ")+" ORDER BY julianday(created_at) DESC,rowid DESC", args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	result := []TaskRow{}
+	for rows.Next() {
+		var item TaskRow
+		var created string
+		if err := rows.Scan(&item.ID, &item.Title, &item.GoodsID, &item.SKUColor, &item.SKUSize, &item.Quantity, &item.MaxTotalPrice, &item.Status, &item.Version, &created); err != nil {
+			return nil, err
+		}
+		item.CreatedAt, err = time.Parse(time.RFC3339Nano, created)
+		if err != nil {
+			return nil, err
+		}
+		result = append(result, item)
+	}
+	return result, rows.Err()
+}
+
+// ValidateTaskFilter 返回可关联到字段的错误，使服务端页面拒绝篡改参数时仍能保留输入值。
+func ValidateTaskFilter(filter TaskFilter) Errors {
+	validation := Errors{}
+	if !validTaskStatus(filter.Status) {
+		validation["status"] = "请选择有效的任务状态。"
+	}
+	location, err := time.LoadLocation("Asia/Shanghai")
+	if err != nil {
+		validation["created_from"] = "日期筛选暂不可用，请稍后重试。"
+		validation["created_to"] = "日期筛选暂不可用，请稍后重试。"
+		return validation
+	}
+	parseDate := func(field, value string) (time.Time, bool) {
+		if value == "" {
+			return time.Time{}, true
+		}
+		parsed, parseErr := time.ParseInLocation("2006-01-02", value, location)
+		if parseErr != nil {
+			validation[field] = "请输入有效日期。"
+			return time.Time{}, false
+		}
+		return parsed, true
+	}
+	from, fromOK := parseDate("created_from", filter.CreatedFrom)
+	to, toOK := parseDate("created_to", filter.CreatedTo)
+	if fromOK && toOK && !from.IsZero() && !to.IsZero() && from.After(to) {
+		validation["created_to"] = "结束日期不能早于开始日期。"
+	}
+	return validation
+}
+
+func (store *SQLiteStore) StartPurchases(ctx context.Context, command StartCommand, createdBy string) (StartResult, error) {
+	items, err := startItems(command)
+	if err != nil || createdBy == "" {
+		return StartResult{}, ErrInvalidStart
+	}
+	if store.policy.AuthorizationTTL <= 0 || store.policy.MaxQuantity <= 0 {
+		return StartResult{}, ErrInvalidStart
+	}
+	_, ceiling, ok := normalizeCents(store.policy.MaxTotalPrice)
+	if !ok {
+		return StartResult{}, ErrInvalidStart
+	}
+	writeCtx, cancel := context.WithTimeout(ctx, sqliteWriteTimeout)
+	defer cancel()
+	select {
+	case store.writeGate <- struct{}{}:
+		defer func() { <-store.writeGate }()
+	case <-writeCtx.Done():
+		return StartResult{}, writeCtx.Err()
+	}
+	tx, err := store.database.BeginTx(writeCtx, nil)
+	if err != nil {
+		return StartResult{}, err
+	}
+	defer tx.Rollback()
+	// Replay precedes any DRAFT check. One service process serializes this check with creation; SQLite uniqueness remains the cross-transaction backstop.
+	result, found, err := replayStart(writeCtx, tx, command.StartKey, items)
+	if err != nil {
+		return StartResult{}, err
+	}
+	if found {
+		if err := tx.Commit(); err != nil {
+			return StartResult{}, err
+		}
+		return result, nil
+	}
+	now := store.now().UTC()
+	expires := now.Add(store.policy.AuthorizationTTL)
+	result = StartResult{StartKey: command.StartKey, AuthorizedCount: len(items), Tasks: make([]AuthorizedTask, 0, len(items)), PaymentAutomated: false}
+	for _, item := range items {
+		var title, goods, color, size, price, status string
+		var quantity, version int
+		if err := tx.QueryRowContext(writeCtx, "SELECT title,goods_id,sku_color,sku_size,quantity,max_total_price,status,version FROM tasks WHERE id=?", item.TaskID).Scan(&title, &goods, &color, &size, &quantity, &price, &status, &version); err != nil {
+			if err == sql.ErrNoRows {
+				return StartResult{}, ErrStartConflict
+			}
+			return StartResult{}, err
+		}
+		if status != "DRAFT" || version != item.ExpectedTaskVersion || !goodsIDValid(goods) || color == "" || size == "" || quantity < 1 || quantity > store.policy.MaxQuantity {
+			return StartResult{}, ErrStartConflict
+		}
+		canonical, cents, ok := normalizeCents(price)
+		if !ok || canonical != price || cents.Cmp(ceiling) > 0 {
+			return StartResult{}, ErrStartConflict
+		}
+		if _, err := domain.TransitionTask(domain.TaskStatusDraft, domain.TaskStatusPending); err != nil {
+			return StartResult{}, err
+		}
+		id, err := NewCreateKey()
+		if err != nil {
+			return StartResult{}, err
+		}
+		next := version + 1
+		if _, err = tx.ExecContext(writeCtx, "INSERT INTO order_authorizations (id,task_id,task_version,start_key,goods_id,sku_color,sku_size,quantity,total_price_cap,status,created_by,created_at,expires_at) VALUES (?,?,?,?,?,?,?,?,?,'ACTIVE',?,?,?)", id, item.TaskID, next, command.StartKey, goods, color, size, quantity, price, createdBy, now.Format(time.RFC3339Nano), expires.Format(time.RFC3339Nano)); err != nil {
+			return StartResult{}, err
+		}
+		updated, err := tx.ExecContext(writeCtx, "UPDATE tasks SET status='PENDING',version=version+1,updated_at=? WHERE id=? AND status='DRAFT' AND version=?", now.Format(time.RFC3339Nano), item.TaskID, version)
+		if err != nil {
+			return StartResult{}, err
+		}
+		affected, err := updated.RowsAffected()
+		if err != nil {
+			return StartResult{}, err
+		}
+		if affected != 1 {
+			return StartResult{}, ErrStartConflict
+		}
+		result.Tasks = append(result.Tasks, AuthorizedTask{TaskID: item.TaskID, TaskVersion: next, AuthorizationID: id, ExpiresAt: expires})
+	}
+	if err := tx.Commit(); err != nil {
+		return StartResult{}, err
+	}
+	return result, nil
+}
+
+func goodsIDValid(value string) bool {
+	if value == "" {
+		return false
+	}
+	for _, ch := range value {
+		if ch < '0' || ch > '9' {
+			return false
+		}
+	}
+	return true
+}
+
+func replayStart(ctx context.Context, tx *sql.Tx, startKey string, items []StartItem) (StartResult, bool, error) {
+	rows, err := tx.QueryContext(ctx, "SELECT id,task_id,task_version,expires_at FROM order_authorizations WHERE start_key=? ORDER BY task_id", startKey)
+	if err != nil {
+		return StartResult{}, false, err
+	}
+	defer rows.Close()
+	result := StartResult{StartKey: startKey, PaymentAutomated: false}
+	for rows.Next() {
+		var item AuthorizedTask
+		var expires string
+		if err := rows.Scan(&item.AuthorizationID, &item.TaskID, &item.TaskVersion, &expires); err != nil {
+			return StartResult{}, false, err
+		}
+		item.ExpiresAt, err = time.Parse(time.RFC3339Nano, expires)
+		if err != nil {
+			return StartResult{}, false, err
+		}
+		result.Tasks = append(result.Tasks, item)
+	}
+	if err := rows.Err(); err != nil {
+		return StartResult{}, false, err
+	}
+	if len(result.Tasks) == 0 {
+		return StartResult{}, false, nil
+	}
+	if len(result.Tasks) != len(items) {
+		return StartResult{}, false, ErrStartConflict
+	}
+	for i := range items {
+		if result.Tasks[i].TaskID != items[i].TaskID || result.Tasks[i].TaskVersion-1 != items[i].ExpectedTaskVersion {
+			return StartResult{}, false, ErrStartConflict
+		}
+	}
+	result.AuthorizedCount = len(result.Tasks)
+	return result, true, nil
+}

admin/internal/tasks/start_store_test.go

@@ -0,0 +1,195 @@
+package tasks
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"testing"
+	"time"
+)
+
+func TestListTasksTreatsLikeMetacharactersLiterally(t *testing.T) {
+	database := migratedDatabase(t)
+	store, err := NewSQLiteStore(database)
+	if err != nil {
+		t.Fatal(err)
+	}
+	created := "2026-08-04T01:00:00Z"
+	insertTaskRow(t, database, "percent", "100%纯棉", "100", "DRAFT", created)
+	insertTaskRow(t, database, "underscore", "尺码_A", "101", "DRAFT", created)
+	insertTaskRow(t, database, "backslash", `路径\名称`, "102", "DRAFT", created)
+	insertTaskRow(t, database, "plain", "普通商品", "103", "DRAFT", created)
+
+	for _, test := range []struct {
+		keyword string
+		wantID  string
+	}{
+		{keyword: "%", wantID: "percent"},
+		{keyword: "_", wantID: "underscore"},
+		{keyword: `\`, wantID: "backslash"},
+	} {
+		t.Run(test.wantID, func(t *testing.T) {
+			rows, err := store.ListTasks(context.Background(), TaskFilter{Keyword: test.keyword})
+			if err != nil {
+				t.Fatal(err)
+			}
+			if len(rows) != 1 || rows[0].ID != test.wantID {
+				t.Fatalf("keyword %q rows = %#v, want only %q", test.keyword, rows, test.wantID)
+			}
+		})
+	}
+}
+
+func TestListTasksSupportsEveryStatusAndEmptyMeansAll(t *testing.T) {
+	database := migratedDatabase(t)
+	store, err := NewSQLiteStore(database)
+	if err != nil {
+		t.Fatal(err)
+	}
+	statuses := []string{"DRAFT", "PENDING", "CLAIMED", "ORDERING", "NEEDS_MANUAL", "WAITING_PAYMENT", "RECONCILIATION_REQUIRED", "SUCCEEDED", "FAILED", "CANCELED"}
+	for index, status := range statuses {
+		insertTaskRow(t, database, status, status, "200", status, time.Date(2026, 8, 4, 1, 0, index, 0, time.UTC).Format(time.RFC3339Nano))
+	}
+
+	all, err := store.ListTasks(context.Background(), TaskFilter{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(all) != len(statuses) {
+		t.Fatalf("all-status rows = %d, want %d", len(all), len(statuses))
+	}
+	for _, status := range statuses {
+		rows, err := store.ListTasks(context.Background(), TaskFilter{Status: status})
+		if err != nil {
+			t.Fatalf("status %s: %v", status, err)
+		}
+		if len(rows) != 1 || rows[0].Status != status {
+			t.Fatalf("status %s rows = %#v", status, rows)
+		}
+	}
+}
+
+func TestListTasksUsesShanghaiHalfOpenDateRange(t *testing.T) {
+	database := migratedDatabase(t)
+	store, err := NewSQLiteStore(database)
+	if err != nil {
+		t.Fatal(err)
+	}
+	insertTaskRow(t, database, "before", "before", "300", "DRAFT", "2026-08-03T15:59:59Z")
+	insertTaskRow(t, database, "at-start", "at-start", "301", "DRAFT", "2026-08-03T16:00:00Z")
+	insertTaskRow(t, database, "before-end", "before-end", "302", "DRAFT", "2026-08-04T15:59:59Z")
+	insertTaskRow(t, database, "at-end", "at-end", "303", "DRAFT", "2026-08-04T16:00:00Z")
+
+	rows, err := store.ListTasks(context.Background(), TaskFilter{CreatedFrom: "2026-08-04", CreatedTo: "2026-08-04"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(rows) != 2 || rows[0].ID != "before-end" || rows[1].ID != "at-start" {
+		t.Fatalf("Shanghai day rows = %#v, want [before-end at-start]", rows)
+	}
+}
+
+func TestListTasksBreaksEqualTimestampsByDescendingRowID(t *testing.T) {
+	database := migratedDatabase(t)
+	store, err := NewSQLiteStore(database)
+	if err != nil {
+		t.Fatal(err)
+	}
+	created := "2026-08-04T01:02:03Z"
+	insertTaskRow(t, database, "first", "first", "400", "DRAFT", created)
+	insertTaskRow(t, database, "second", "second", "401", "DRAFT", created)
+
+	rows, err := store.ListTasks(context.Background(), TaskFilter{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(rows) != 2 || rows[0].ID != "second" || rows[1].ID != "first" {
+		t.Fatalf("equal-time rows = %#v, want descending rowid", rows)
+	}
+}
+
+func TestListTasksRejectsInvalidStatusAndDates(t *testing.T) {
+	store, err := NewSQLiteStore(migratedDatabase(t))
+	if err != nil {
+		t.Fatal(err)
+	}
+	for name, filter := range map[string]TaskFilter{
+		"status":        {Status: "UNKNOWN"},
+		"from date":     {CreatedFrom: "2026-02-30"},
+		"to date":       {CreatedTo: "04/08/2026"},
+		"reverse range": {CreatedFrom: "2026-08-05", CreatedTo: "2026-08-04"},
+	} {
+		t.Run(name, func(t *testing.T) {
+			rows, err := store.ListTasks(context.Background(), filter)
+			if !errors.Is(err, ErrInvalidFilter) || rows != nil {
+				t.Fatalf("ListTasks(%#v) = (%#v, %v), want ErrInvalidFilter", filter, rows, err)
+			}
+		})
+	}
+}
+
+func TestStartPurchasesIsAtomicAndReplaysSameSet(t *testing.T) {
+	database := migratedDatabase(t)
+	store, err := NewSQLiteStore(database)
+	if err != nil {
+		t.Fatal(err)
+	}
+	store.SetStartPolicy(StartPolicy{AuthorizationTTL: time.Hour, MaxQuantity: 10, MaxTotalPrice: "999.99"})
+	store.now = func() time.Time { return time.Date(2026, 8, 4, 1, 2, 3, 0, time.UTC) }
+	for _, draft := range []Draft{testDraft(testKey, "one"), testDraft("b3c9f507-7473-4fa6-8d71-8786c34c6301", "two")} {
+		if _, err := store.CreateDraft(context.Background(), draft); err != nil {
+			t.Fatal(err)
+		}
+	}
+	command := StartCommand{StartKey: "c3c9f507-7473-4fa6-8d71-8786c34c6301", Tasks: []StartItem{{TaskID: "b3c9f507-7473-4fa6-8d71-8786c34c6301", ExpectedTaskVersion: 1}, {TaskID: testKey, ExpectedTaskVersion: 1}}}
+	first, err := store.StartPurchases(context.Background(), command, "admin")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if first.AuthorizedCount != 2 || first.PaymentAutomated {
+		t.Fatalf("start result=%#v", first)
+	}
+	command.Tasks[0], command.Tasks[1] = command.Tasks[1], command.Tasks[0]
+	replay, err := store.StartPurchases(context.Background(), command, "admin")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if replay.Tasks[0].AuthorizationID != first.Tasks[0].AuthorizationID || replay.Tasks[1].AuthorizationID != first.Tasks[1].AuthorizationID {
+		t.Fatalf("replay=%#v first=%#v", replay, first)
+	}
+	var pending, auths int
+	if err := database.QueryRow(`SELECT COUNT(*) FROM tasks WHERE status='PENDING' AND version=2`).Scan(&pending); err != nil || pending != 2 {
+		t.Fatalf("pending=%d err=%v", pending, err)
+	}
+	if err := database.QueryRow(`SELECT COUNT(*) FROM order_authorizations WHERE status='ACTIVE' AND created_by='admin'`).Scan(&auths); err != nil || auths != 2 {
+		t.Fatalf("auths=%d err=%v", auths, err)
+	}
+	_, err = store.StartPurchases(context.Background(), StartCommand{StartKey: command.StartKey, Tasks: command.Tasks[:1]}, "admin")
+	if !errors.Is(err, ErrStartConflict) {
+		t.Fatalf("subset err=%v", err)
+	}
+}
+
+func TestShanghaiRangeAndMoneyAreFailClosed(t *testing.T) {
+	start, end, err := ShanghaiRange("2026-08-04", "2026-08-04")
+	if err != nil || start.Format(time.RFC3339) != "2026-08-03T16:00:00Z" || end.Format(time.RFC3339) != "2026-08-04T16:00:00Z" {
+		t.Fatalf("range=(%s,%s,%v)", start, end, err)
+	}
+	for _, value := range []string{"0.01", "12.80", "999999999999999999999999.99"} {
+		if _, _, ok := normalizeCents(value); !ok {
+			t.Fatalf("money %q rejected", value)
+		}
+	}
+	for _, value := range []string{"1", "01.20", "0.00", "1.234", "1.", " 1.00", "1e2"} {
+		if _, _, ok := normalizeCents(value); ok {
+			t.Fatalf("money %q accepted", value)
+		}
+	}
+}
+
+func insertTaskRow(t *testing.T, database *sql.DB, id, title, goodsID, status, createdAt string) {
+	t.Helper()
+	if _, err := database.Exec(`INSERT INTO tasks (id, source, title, goods_id, sku_color, sku_size, quantity, max_total_price, status, version, created_at, updated_at) VALUES (?, 'MANUAL', ?, ?, '黑色', 'M', 2, '12.80', ?, 1, ?, ?)`, id, title, goodsID, status, createdAt, createdAt); err != nil {
+		t.Fatalf("insert task %s: %v", id, err)
+	}
+}

admin/internal/tasks/store.go

@@ -0,0 +1,135 @@
+package tasks
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+	"time"
+)
+
+const sqliteWriteTimeout = 2 * time.Second
+
+type Store interface {
+	CreateDraft(context.Context, Draft) (Draft, error)
+	ListDrafts(context.Context) ([]Draft, error)
+	ListTasks(context.Context, TaskFilter) ([]TaskRow, error)
+	StartPurchases(context.Context, StartCommand, string) (StartResult, error)
+}
+type SQLiteStore struct {
+	database  *sql.DB
+	now       func() time.Time
+	writeGate chan struct{}
+	policy    StartPolicy
+}
+
+func NewSQLiteStore(database *sql.DB) (*SQLiteStore, error) {
+	if database == nil {
+		return nil, errors.New("database is required")
+	}
+	if _, err := database.Exec("SELECT task_version, start_key, total_price_cap FROM order_authorizations LIMIT 1"); err != nil {
+		return nil, fmt.Errorf("tasks migration is not available: %w", err)
+	}
+	if _, err := database.Exec("SELECT 1 FROM purchase_attempts LIMIT 1"); err != nil {
+		return nil, fmt.Errorf("single-pass migration is not available: %w", err)
+	}
+	return &SQLiteStore{database: database, now: time.Now, writeGate: make(chan struct{}, 1)}, nil
+}
+
+func (store *SQLiteStore) CreateDraft(ctx context.Context, draft Draft) (Draft, error) {
+	writeContext, cancel := context.WithTimeout(ctx, sqliteWriteTimeout)
+	defer cancel()
+	// SQLite permits one writer at a time. Serializing this store's short create
+	// transaction prevents concurrent retries of one create key from surfacing as busy.
+	select {
+	case store.writeGate <- struct{}{}:
+		defer func() { <-store.writeGate }()
+	case <-writeContext.Done():
+		return Draft{}, writeContext.Err()
+	}
+	draft.CreatedAt = store.now().UTC()
+	transaction, err := store.database.BeginTx(writeContext, nil)
+	if err != nil {
+		return Draft{}, err
+	}
+	defer transaction.Rollback()
+	_, err = transaction.ExecContext(writeContext, `INSERT INTO tasks (id, source, title, goods_id, sku_color, sku_size, quantity, max_total_price, status, version, created_at, updated_at) VALUES (?, 'MANUAL', ?, ?, ?, ?, ?, ?, 'DRAFT', 1, ?, ?)`, draft.ID, draft.Title, draft.GoodsID, draft.SKUColor, draft.SKUSize, draft.Quantity, draft.MaxTotalPrice, draft.CreatedAt.Format(time.RFC3339Nano), draft.CreatedAt.Format(time.RFC3339Nano))
+	if err == nil {
+		if err := transaction.Commit(); err != nil {
+			return Draft{}, err
+		}
+		return draft, nil
+	}
+	existing, found, currentPhase, lookupErr := findDraft(writeContext, transaction, draft.ID)
+	if lookupErr != nil {
+		return Draft{}, lookupErr
+	}
+	if found && currentPhase && samePayload(existing, draft) {
+		if err := transaction.Commit(); err != nil {
+			return Draft{}, err
+		}
+		return existing, nil
+	}
+	if found {
+		return Draft{}, ErrCreateKeyConflict
+	}
+	return Draft{}, err
+}
+
+func (store *SQLiteStore) ListDrafts(ctx context.Context) ([]Draft, error) {
+	// rowid makes equal timestamps deterministic: SQLite assigns it in insertion order,
+	// whereas UUID v4 is deliberately not time-sortable.
+	rows, err := store.database.QueryContext(ctx, `SELECT id, title, goods_id, sku_color, sku_size, quantity, max_total_price, created_at FROM tasks WHERE source = 'MANUAL' AND status = 'DRAFT' ORDER BY created_at DESC, rowid DESC`)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	result := []Draft{}
+	for rows.Next() {
+		draft, err := scanDraft(rows)
+		if err != nil {
+			return nil, err
+		}
+		result = append(result, draft)
+	}
+	return result, rows.Err()
+}
+
+func findDraft(ctx context.Context, transaction *sql.Tx, id string) (Draft, bool, bool, error) {
+	row := transaction.QueryRowContext(ctx, `SELECT id, title, goods_id, sku_color, sku_size, quantity, max_total_price, created_at, source, status, version FROM tasks WHERE id = ?`, id)
+	var draft Draft
+	var created, source, status string
+	var version int
+	err := row.Scan(&draft.ID, &draft.Title, &draft.GoodsID, &draft.SKUColor, &draft.SKUSize, &draft.Quantity, &draft.MaxTotalPrice, &created, &source, &status, &version)
+	if errors.Is(err, sql.ErrNoRows) {
+		return Draft{}, false, false, nil
+	}
+	if err != nil {
+		return Draft{}, false, false, err
+	}
+	parsed, err := time.Parse(time.RFC3339Nano, created)
+	if err != nil {
+		return Draft{}, false, false, err
+	}
+	draft.CreatedAt = parsed
+	return draft, true, source == "MANUAL" && status == "DRAFT" && version == 1, nil
+}
+
+type scanner interface{ Scan(...any) error }
+
+func scanDraft(row scanner) (Draft, error) {
+	var draft Draft
+	var created string
+	if err := row.Scan(&draft.ID, &draft.Title, &draft.GoodsID, &draft.SKUColor, &draft.SKUSize, &draft.Quantity, &draft.MaxTotalPrice, &created); err != nil {
+		return Draft{}, err
+	}
+	parsed, err := time.Parse(time.RFC3339Nano, created)
+	if err != nil {
+		return Draft{}, err
+	}
+	draft.CreatedAt = parsed
+	return draft, nil
+}
+func samePayload(left, right Draft) bool {
+	return left.ID == right.ID && left.Title == right.Title && left.GoodsID == right.GoodsID && left.SKUColor == right.SKUColor && left.SKUSize == right.SKUSize && left.Quantity == right.Quantity && left.MaxTotalPrice == right.MaxTotalPrice
+}

admin/internal/tasks/tasks.go

@@ -0,0 +1,159 @@
+// Package tasks 定义手工 DRAFT 任务的校验与窄仓储边界。
+package tasks
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"errors"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const (
+	maxTitleLength = 120
+	maxSKUText     = 80
+)
+
+var ErrCreateKeyConflict = errors.New("create key conflicts with a different task")
+
+type Draft struct {
+	ID            string
+	Title         string
+	GoodsID       string
+	SKUColor      string
+	SKUSize       string
+	Quantity      int
+	MaxTotalPrice string
+	CreatedAt     time.Time
+}
+
+type Form struct{ CreateKey, Title, ProductURL, SKUColor, SKUSize, Quantity, MaxTotalPrice string }
+type Errors map[string]string
+
+func (errors Errors) Valid() bool { return len(errors) == 0 }
+
+// Validate trims and normalizes a user form. It never reads a product page or derives price data.
+func Validate(form Form) (Draft, Errors) {
+	draft := Draft{ID: strings.TrimSpace(form.CreateKey), Title: strings.TrimSpace(form.Title), SKUColor: strings.TrimSpace(form.SKUColor), SKUSize: strings.TrimSpace(form.SKUSize)}
+	errors := Errors{}
+	if !validUUID(draft.ID) {
+		errors["create_key"] = "创建请求已过期，请重新打开表单。"
+	}
+	if draft.Title == "" || len([]rune(draft.Title)) > maxTitleLength {
+		errors["title"] = "任务名称不能为空，且不能超过 120 个字符。"
+	}
+	if draft.SKUColor == "" || len([]rune(draft.SKUColor)) > maxSKUText {
+		errors["sku_color"] = "颜色分类不能为空，且不能超过 80 个字符。"
+	}
+	if draft.SKUSize == "" || len([]rune(draft.SKUSize)) > maxSKUText {
+		errors["sku_size"] = "尺码不能为空，且不能超过 80 个字符。"
+	}
+	goodsID, ok := CanonicalGoodsID(strings.TrimSpace(form.ProductURL))
+	if !ok {
+		errors["product_url"] = "请输入唯一的 canonical 商品链接。"
+	} else {
+		draft.GoodsID = goodsID
+	}
+	quantity, err := strconv.ParseInt(strings.TrimSpace(form.Quantity), 10, 0)
+	if err != nil || quantity < 1 {
+		errors["quantity"] = "数量必须是正整数。"
+	} else {
+		draft.Quantity = int(quantity)
+	}
+	money, ok := normalizeMoney(strings.TrimSpace(form.MaxTotalPrice))
+	if !ok {
+		errors["max_total_price"] = "价格上限必须大于零，且最多两位小数。"
+	} else {
+		draft.MaxTotalPrice = money
+	}
+	return draft, errors
+}
+
+// CanonicalGoodsID only accepts the one verified manual-entry URL shape; untrusted query data is discarded.
+func CanonicalGoodsID(value string) (string, bool) {
+	if value == "" || strings.Contains(value, "\\") || strings.Contains(value, "%") {
+		return "", false
+	}
+	parsed, err := url.ParseRequestURI(value)
+	if err != nil || parsed.Scheme != "https" || parsed.Host != "mobile.yangkeduo.com" || parsed.User != nil || parsed.Port() != "" || parsed.Path != "/goods.html" || parsed.Fragment != "" {
+		return "", false
+	}
+	values, err := url.ParseQuery(parsed.RawQuery)
+	if err != nil {
+		return "", false
+	}
+	goodsIDs := values["goods_id"]
+	if len(goodsIDs) != 1 || goodsIDs[0] == "" {
+		return "", false
+	}
+	for _, character := range goodsIDs[0] {
+		if character < '0' || character > '9' {
+			return "", false
+		}
+	}
+	return goodsIDs[0], true
+}
+
+func CanonicalURL(goodsID string) string {
+	return "https://mobile.yangkeduo.com/goods.html?goods_id=" + goodsID
+}
+
+func NewCreateKey() (string, error) {
+	bytes := make([]byte, 16)
+	if _, err := rand.Read(bytes); err != nil {
+		return "", err
+	}
+	bytes[6] = (bytes[6] & 0x0f) | 0x40
+	bytes[8] = (bytes[8] & 0x3f) | 0x80
+	hexValue := hex.EncodeToString(bytes)
+	return hexValue[0:8] + "-" + hexValue[8:12] + "-" + hexValue[12:16] + "-" + hexValue[16:20] + "-" + hexValue[20:32], nil
+}
+
+func validUUID(value string) bool {
+	if len(value) != 36 {
+		return false
+	}
+	for index, character := range value {
+		if index == 8 || index == 13 || index == 18 || index == 23 {
+			if character != '-' {
+				return false
+			}
+			continue
+		}
+		if !(character >= '0' && character <= '9' || character >= 'a' && character <= 'f') {
+			return false
+		}
+	}
+	return value[14] == '4' && (value[19] == '8' || value[19] == '9' || value[19] == 'a' || value[19] == 'b')
+}
+
+func normalizeMoney(value string) (string, bool) {
+	parts := strings.Split(value, ".")
+	if len(parts) > 2 || parts[0] == "" || len(parts) == 2 && (len(parts[1]) == 0 || len(parts[1]) > 2) {
+		return "", false
+	}
+	for _, character := range parts[0] {
+		if character < '0' || character > '9' {
+			return "", false
+		}
+	}
+	fraction := ""
+	if len(parts) == 2 {
+		fraction = parts[1]
+		for _, character := range fraction {
+			if character < '0' || character > '9' {
+				return "", false
+			}
+		}
+	}
+	whole := strings.TrimLeft(parts[0], "0")
+	if whole == "" {
+		whole = "0"
+	}
+	if whole == "0" && strings.Trim(fraction, "0") == "" {
+		return "", false
+	}
+	return whole + "." + (fraction + "00")[:2], true
+}

admin/internal/tasks/tasks_test.go

@@ -0,0 +1,300 @@
+package tasks
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"path/filepath"
+	"regexp"
+	"runtime"
+	"sync"
+	"testing"
+	"time"
+
+	"cmbuyer/admin/internal/migrations"
+	"cmbuyer/admin/internal/storage/sqlite"
+)
+
+const testKey = "a3c9f507-7473-4fa6-8d71-8786c34c6301"
+
+func TestValidateNormalizesManualDraft(t *testing.T) {
+	draft, validation := Validate(Form{
+		CreateKey:     " " + testKey + " ",
+		Title:         "  夏季上衣  ",
+		ProductURL:    "https://mobile.yangkeduo.com/goods.html?goods_id=937122477375&utm_source=untrusted",
+		SKUColor:      " 黑色CHA(纯棉) ",
+		SKUSize:       " M(建议100-115) ",
+		Quantity:      "2",
+		MaxTotalPrice: "00012.8",
+	})
+	if !validation.Valid() {
+		t.Fatalf("Validate errors = %#v", validation)
+	}
+	if draft.ID != testKey || draft.GoodsID != "937122477375" || draft.Title != "夏季上衣" || draft.SKUColor != "黑色CHA(纯棉)" || draft.SKUSize != "M(建议100-115)" || draft.Quantity != 2 || draft.MaxTotalPrice != "12.80" {
+		t.Fatalf("normalized draft = %#v", draft)
+	}
+}
+
+func TestValidateRejectsInvalidFieldsAndURLs(t *testing.T) {
+	base := Form{CreateKey: testKey, Title: "title", ProductURL: "https://mobile.yangkeduo.com/goods.html?goods_id=1", SKUColor: "black", SKUSize: "M", Quantity: "1", MaxTotalPrice: "1"}
+	for name, update := range map[string]func(*Form){
+		"empty title":       func(form *Form) { form.Title = "  " },
+		"long color":        func(form *Form) { form.SKUColor = string(make([]rune, maxSKUText+1)) },
+		"fraction quantity": func(form *Form) { form.Quantity = "1.5" },
+		"zero quantity":     func(form *Form) { form.Quantity = "0" },
+		"too many decimals": func(form *Form) { form.MaxTotalPrice = "1.234" },
+		"trailing decimal":  func(form *Form) { form.MaxTotalPrice = "1." },
+		"zero money":        func(form *Form) { form.MaxTotalPrice = "0.00" },
+	} {
+		t.Run(name, func(t *testing.T) {
+			form := base
+			update(&form)
+			if _, validation := Validate(form); validation.Valid() {
+				t.Fatal("invalid form was accepted")
+			}
+		})
+	}
+
+	for _, value := range []string{
+		"http://mobile.yangkeduo.com/goods.html?goods_id=1",
+		"https://yangkeduo.com/goods.html?goods_id=1",
+		"https://mobile.yangkeduo.com:443/goods.html?goods_id=1",
+		"https://user@mobile.yangkeduo.com/goods.html?goods_id=1",
+		"https://mobile.yangkeduo.com/goods.html?goods_id=1#fragment",
+		"https://mobile.yangkeduo.com/goods.html?goods_id=1&goods_id=2",
+		"https://mobile.yangkeduo.com/goods.html?goods_id=one",
+		"https://mobile.yangkeduo.com/goods.html?goods_id=%31",
+		"https://mobile.yangkeduo.com/goods.html?goods_id=1%26goods_id%3D2",
+		"https://mobile.yangkeduo.com/goods.html?goods_id=1;uin=bad",
+		"https://mobile.yangkeduo.com/other.html?goods_id=1",
+	} {
+		if _, ok := CanonicalGoodsID(value); ok {
+			t.Fatalf("CanonicalGoodsID accepted %q", value)
+		}
+	}
+}
+
+func TestNormalizeMoneyBoundaries(t *testing.T) {
+	for value, want := range map[string]string{"1": "1.00", "1.2": "1.20", "000.01": "0.01", "999999999999999999": "999999999999999999.00"} {
+		got, ok := normalizeMoney(value)
+		if !ok || got != want {
+			t.Fatalf("normalizeMoney(%q) = (%q, %t), want (%q, true)", value, got, ok, want)
+		}
+	}
+	for _, value := range []string{"0", "0.0", "0.00", "1.", ".1", "1.000", "-1", "1e2", " 1"} {
+		if got, ok := normalizeMoney(value); ok {
+			t.Fatalf("normalizeMoney(%q) = %q, want rejection", value, got)
+		}
+	}
+}
+
+func TestNewCreateKeyIsUUIDv4(t *testing.T) {
+	key, err := NewCreateKey()
+	if err != nil {
+		t.Fatalf("NewCreateKey: %v", err)
+	}
+	if !regexp.MustCompile(`^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$`).MatchString(key) {
+		t.Fatalf("create key %q is not UUID v4", key)
+	}
+}
+
+func TestSQLiteStoreRequiresMigratedDatabase(t *testing.T) {
+	database := openDatabase(t)
+	if _, err := NewSQLiteStore(database); err == nil {
+		t.Fatal("NewSQLiteStore accepted an unmigrated database")
+	}
+}
+
+func TestSQLiteStoreCreatesListsAndHandlesIdempotency(t *testing.T) {
+	database := migratedDatabase(t)
+	store, err := NewSQLiteStore(database)
+	if err != nil {
+		t.Fatalf("NewSQLiteStore: %v", err)
+	}
+	baseTime := time.Date(2026, 8, 4, 9, 0, 0, 0, time.UTC)
+	call := 0
+	store.now = func() time.Time {
+		result := baseTime.Add(time.Duration(call) * time.Minute)
+		call++
+		return result
+	}
+	first := testDraft(testKey, "first")
+	created, err := store.CreateDraft(context.Background(), first)
+	if err != nil {
+		t.Fatalf("create first draft: %v", err)
+	}
+	replayed, err := store.CreateDraft(context.Background(), first)
+	if err != nil {
+		t.Fatalf("replay first draft: %v", err)
+	}
+	if replayed.CreatedAt != created.CreatedAt {
+		t.Fatalf("replayed CreatedAt = %s, want original %s", replayed.CreatedAt, created.CreatedAt)
+	}
+	second := testDraft("b3c9f507-7473-4fa6-8d71-8786c34c6301", "second")
+	if _, err := store.CreateDraft(context.Background(), second); err != nil {
+		t.Fatalf("create second draft: %v", err)
+	}
+	drafts, err := store.ListDrafts(context.Background())
+	if err != nil {
+		t.Fatalf("list drafts: %v", err)
+	}
+	if len(drafts) != 2 || drafts[0].ID != second.ID || drafts[1].ID != first.ID {
+		t.Fatalf("draft order = %#v, want second then first", drafts)
+	}
+	var source, status string
+	var version int
+	if err := database.QueryRow(`SELECT source, status, version FROM tasks WHERE id = ?`, first.ID).Scan(&source, &status, &version); err != nil {
+		t.Fatalf("read stored task: %v", err)
+	}
+	if source != "MANUAL" || status != "DRAFT" || version != 1 {
+		t.Fatalf("stored metadata = (%q, %q, %d)", source, status, version)
+	}
+
+	conflicting := first
+	conflicting.Title = "different"
+	if _, err := store.CreateDraft(context.Background(), conflicting); !errors.Is(err, ErrCreateKeyConflict) {
+		t.Fatalf("conflicting create error = %v, want ErrCreateKeyConflict", err)
+	}
+}
+
+func TestSQLiteStoreRollsBackFailedCreate(t *testing.T) {
+	database := migratedDatabase(t)
+	store, err := NewSQLiteStore(database)
+	if err != nil {
+		t.Fatalf("NewSQLiteStore: %v", err)
+	}
+	if _, err := database.Exec(`CREATE TRIGGER reject_task BEFORE INSERT ON tasks BEGIN SELECT RAISE(ABORT, 'reject test insert'); END`); err != nil {
+		t.Fatalf("create trigger: %v", err)
+	}
+	if _, err := store.CreateDraft(context.Background(), testDraft(testKey, "blocked")); err == nil {
+		t.Fatal("CreateDraft succeeded despite rejecting trigger")
+	}
+	drafts, err := store.ListDrafts(context.Background())
+	if err != nil {
+		t.Fatalf("list after failed create: %v", err)
+	}
+	if len(drafts) != 0 {
+		t.Fatalf("failed create persisted drafts: %#v", drafts)
+	}
+}
+
+func TestSQLiteStoreUsesInsertionOrderForEqualTimesAndFiltersPhase(t *testing.T) {
+	database := migratedDatabase(t)
+	store, err := NewSQLiteStore(database)
+	if err != nil {
+		t.Fatalf("NewSQLiteStore: %v", err)
+	}
+	store.now = func() time.Time { return time.Date(2026, 8, 4, 9, 0, 0, 0, time.UTC) }
+	first := testDraft(testKey, "first")
+	second := testDraft("b3c9f507-7473-4fa6-8d71-8786c34c6301", "second")
+	for _, draft := range []Draft{first, second} {
+		if _, err := store.CreateDraft(context.Background(), draft); err != nil {
+			t.Fatalf("create %s: %v", draft.Title, err)
+		}
+	}
+	if _, err := database.Exec(`INSERT INTO tasks (id, source, title, goods_id, sku_color, sku_size, quantity, max_total_price, status, version, created_at, updated_at) VALUES ('excel-draft', 'EXCEL', 'other', '1', 'black', 'M', 1, '1.00', 'DRAFT', 1, '2026-08-04T10:00:00Z', '2026-08-04T10:00:00Z'), ('manual-pending', 'MANUAL', 'other', '2', 'black', 'M', 1, '1.00', 'PENDING', 1, '2026-08-04T10:00:00Z', '2026-08-04T10:00:00Z')`); err != nil {
+		t.Fatalf("insert out-of-scope tasks: %v", err)
+	}
+	drafts, err := store.ListDrafts(context.Background())
+	if err != nil {
+		t.Fatalf("list drafts: %v", err)
+	}
+	if len(drafts) != 2 || drafts[0].ID != second.ID || drafts[1].ID != first.ID {
+		t.Fatalf("equal-time draft order/filter = %#v, want second then first only", drafts)
+	}
+	if _, err := database.Exec(`UPDATE tasks SET status = 'PENDING' WHERE id = ?`, first.ID); err != nil {
+		t.Fatalf("move draft outside current phase: %v", err)
+	}
+	if _, err := store.CreateDraft(context.Background(), first); !errors.Is(err, ErrCreateKeyConflict) {
+		t.Fatalf("replay of non-DRAFT record error = %v, want conflict", err)
+	}
+	third := testDraft("c3c9f507-7473-4fa6-8d71-8786c34c6301", "third")
+	if _, err := database.Exec(`INSERT INTO tasks (id, source, title, goods_id, sku_color, sku_size, quantity, max_total_price, status, version, created_at, updated_at) VALUES (?, 'EXCEL', ?, ?, ?, ?, ?, ?, 'DRAFT', 1, '2026-08-04T09:00:00Z', '2026-08-04T09:00:00Z')`, third.ID, third.Title, third.GoodsID, third.SKUColor, third.SKUSize, third.Quantity, third.MaxTotalPrice); err != nil {
+		t.Fatalf("insert same-payload EXCEL record: %v", err)
+	}
+	if _, err := store.CreateDraft(context.Background(), third); !errors.Is(err, ErrCreateKeyConflict) {
+		t.Fatalf("replay of non-MANUAL record error = %v, want conflict", err)
+	}
+	if _, err := database.Exec(`UPDATE tasks SET version = 2, source = 'MANUAL' WHERE id = ?`, third.ID); err != nil {
+		t.Fatalf("change replay record version: %v", err)
+	}
+	if _, err := store.CreateDraft(context.Background(), third); !errors.Is(err, ErrCreateKeyConflict) {
+		t.Fatalf("replay of non-v1 record error = %v, want conflict", err)
+	}
+}
+
+func TestSQLiteStoreConcurrentIdenticalCreateIsOneDraft(t *testing.T) {
+	store, err := NewSQLiteStore(migratedDatabase(t))
+	if err != nil {
+		t.Fatalf("NewSQLiteStore: %v", err)
+	}
+	const callers = 20
+	start := make(chan struct{})
+	errors := make(chan error, callers)
+	results := make(chan Draft, callers)
+	var group sync.WaitGroup
+	for range callers {
+		group.Add(1)
+		go func() {
+			defer group.Done()
+			<-start
+			draft, err := store.CreateDraft(context.Background(), testDraft(testKey, "same"))
+			if err != nil {
+				errors <- err
+				return
+			}
+			results <- draft
+		}()
+	}
+	close(start)
+	group.Wait()
+	close(errors)
+	close(results)
+	for err := range errors {
+		t.Fatalf("concurrent create: %v", err)
+	}
+	for result := range results {
+		if result.ID != testKey {
+			t.Fatalf("concurrent result = %#v", result)
+		}
+	}
+	drafts, err := store.ListDrafts(context.Background())
+	if err != nil {
+		t.Fatalf("list after concurrent create: %v", err)
+	}
+	if len(drafts) != 1 || drafts[0].ID != testKey {
+		t.Fatalf("concurrent creates persisted %#v, want exactly one", drafts)
+	}
+}
+
+func testDraft(id, title string) Draft {
+	return Draft{ID: id, Title: title, GoodsID: "937122477375", SKUColor: "black", SKUSize: "M", Quantity: 2, MaxTotalPrice: "12.80"}
+}
+
+func openDatabase(t *testing.T) *sql.DB {
+	t.Helper()
+	database, err := sqlite.Open(filepath.Join(t.TempDir(), "tasks.db"))
+	if err != nil {
+		t.Fatalf("open database: %v", err)
+	}
+	t.Cleanup(func() { _ = database.Close() })
+	return database
+}
+
+func migratedDatabase(t *testing.T) *sql.DB {
+	t.Helper()
+	database := openDatabase(t)
+	if err := migrations.Up(context.Background(), database, migrationDirectory(t)); err != nil {
+		t.Fatalf("migrate database: %v", err)
+	}
+	return database
+}
+
+func migrationDirectory(t *testing.T) string {
+	t.Helper()
+	_, file, _, ok := runtime.Caller(0)
+	if !ok {
+		t.Fatal("locate test source")
+	}
+	return filepath.Join(filepath.Dir(file), "..", "..", "migrations")
+}

admin/internal/transport/webui/static/drawer.test.js

@@ -0,0 +1,211 @@
+"use strict";
+
+const test = require("node:test");
+const assert = require("node:assert/strict");
+const fs = require("node:fs");
+const path = require("node:path");
+const vm = require("node:vm");
+
+const source = fs.readFileSync(path.join(__dirname, "tasks.js"), "utf8");
+
+test("visible button opens the same routed detail and close restores list state", async () => {
+  const harness = createDrawerHarness();
+
+  harness.button.listeners.click();
+  await harness.flush();
+
+  assert.equal(harness.requests.length, 1);
+  assert.equal(harness.requests[0].url, "/tasks/a3c9f507-7473-4fa6-8d71-8786c34c6301");
+  assert.equal(harness.requests[0].options.headers["X-CMBuyer-View"], "drawer");
+  assert.equal(harness.drawer.open, true);
+  assert.equal(harness.closeButton.focused, true);
+  assert.equal(harness.history.pushes.length, 1);
+  assert.equal(harness.history.pushes[0].url, harness.requests[0].url);
+  assert.equal(harness.history.pushes[0].state.focusTarget, "button");
+
+  harness.closeButton.listeners.click();
+  assert.equal(harness.history.backCalls, 1);
+  harness.popstate({state: {cmbuyerList: true}});
+  assert.equal(harness.drawer.open, false);
+  assert.equal(harness.button.focused, true);
+  assert.equal(harness.row.focused, false);
+  assert.equal(harness.scrolls.length, 1);
+  assert.equal(harness.scrolls[0].top, 275);
+  assert.equal(harness.scrolls[0].behavior, "auto");
+});
+
+test("button focus target survives back, forward, and back again", async () => {
+  const harness = createDrawerHarness();
+  harness.button.listeners.click();
+  await harness.flush();
+  const drawerState = harness.history.pushes[0].state;
+
+  harness.popstate({state: {cmbuyerList: true}});
+  assert.equal(harness.button.focusCalls, 1);
+  assert.equal(harness.row.focusCalls, 0);
+
+  harness.popstate({state: drawerState});
+  await harness.flush();
+  assert.equal(harness.drawer.open, true);
+  assert.equal(harness.history.pushes.length, 1);
+
+  harness.popstate({state: {cmbuyerList: true}});
+  assert.equal(harness.drawer.open, false);
+  assert.equal(harness.button.focusCalls, 2);
+  assert.equal(harness.row.focusCalls, 0);
+});
+
+test("failed forward retry reuses history and closes back to button in one step", async () => {
+  const harness = createDrawerHarness();
+  harness.button.listeners.click();
+  await harness.flush();
+  const drawerState = harness.history.pushes[0].state;
+  harness.popstate({state: {cmbuyerList: true}});
+
+  harness.failNextRequest();
+  harness.popstate({state: drawerState});
+  await harness.flush();
+  const retry = harness.body.children[1].children[0];
+  retry.listeners.click();
+  await harness.flush();
+
+  assert.equal(harness.history.pushes.length, 1);
+  assert.equal(harness.drawer.open, true);
+  harness.closeButton.listeners.click();
+  assert.equal(harness.history.backCalls, 1);
+  harness.popstate({state: {cmbuyerList: true}});
+  assert.equal(harness.drawer.open, false);
+  assert.equal(harness.button.focusCalls, 2);
+  assert.equal(harness.row.focusCalls, 0);
+});
+
+test("double click and Enter open rows but nested controls never do", async () => {
+  const harness = createDrawerHarness();
+  const ignored = {closest: () => ({})};
+  const rowTarget = {closest: () => null};
+
+  harness.row.listeners.dblclick({target: ignored});
+  harness.row.listeners.dblclick({target: rowTarget});
+  await harness.flush();
+  assert.equal(harness.requests.length, 1);
+
+  harness.popstate({state: {cmbuyerList: true}});
+  let prevented = false;
+  harness.row.listeners.keydown({key: "Enter", target: harness.row, preventDefault: () => { prevented = true; }});
+  await harness.flush();
+  assert.equal(prevented, true);
+  assert.equal(harness.requests.length, 2);
+
+  harness.row.listeners.keydown({key: "Enter", target: ignored, preventDefault: () => assert.fail("nested control Enter was intercepted")});
+  assert.equal(harness.requests.length, 2);
+});
+
+test("browser back and forward close and reopen without duplicating history", async () => {
+  const harness = createDrawerHarness();
+  harness.row.listeners.keydown({key: "Enter", target: harness.row, preventDefault() {}});
+  await harness.flush();
+  assert.equal(harness.history.pushes.length, 1);
+
+  harness.popstate({state: {cmbuyerList: true}});
+  assert.equal(harness.drawer.open, false);
+  harness.popstate({state: {cmbuyerDrawer: true, detailURL: harness.row.dataset.detailUrl}});
+  await harness.flush();
+
+  assert.equal(harness.drawer.open, true);
+  assert.equal(harness.requests.length, 2);
+  assert.equal(harness.history.pushes.length, 1);
+});
+
+test("Escape follows browser history and does not mutate list URL", async () => {
+  const harness = createDrawerHarness();
+  harness.button.listeners.click();
+  await harness.flush();
+  let prevented = false;
+
+  harness.drawer.listeners.cancel({preventDefault: () => { prevented = true; }});
+
+  assert.equal(prevented, true);
+  assert.equal(harness.history.backCalls, 1);
+  assert.equal(harness.history.replaces[0].url, "/tasks?status=DRAFT");
+});
+
+function createDrawerHarness() {
+  class FakeElement {
+    constructor() {
+      this.listeners = {};
+      this.dataset = {};
+      this.open = false;
+      this.focused = false;
+      this.focusCalls = 0;
+      this.children = [];
+      this._innerHTML = "";
+    }
+    addEventListener(type, listener) { this.listeners[type] = listener; }
+    focus() { this.focused = true; this.focusCalls++; }
+    showModal() { this.open = true; }
+    close() { this.open = false; }
+    replaceChildren(...children) { this.children = children; this._innerHTML = ""; }
+    append(...children) { this.children.push(...children); }
+    setAttribute() {}
+    closest() { return null; }
+    set innerHTML(value) { this._innerHTML = value; }
+    get innerHTML() { return this._innerHTML; }
+  }
+
+  const body = new FakeElement();
+  const closeButton = new FakeElement();
+  const button = new FakeElement();
+  const row = new FakeElement();
+  row.dataset.detailUrl = "/tasks/a3c9f507-7473-4fa6-8d71-8786c34c6301";
+  row.querySelector = (selector) => selector === "[data-open-detail]" ? button : null;
+  const drawer = new FakeElement();
+  drawer.querySelector = (selector) => ({"[data-detail-body]": body, "[data-close-detail]": closeButton})[selector] || null;
+
+  const requests = [];
+  const popstateListeners = [];
+  const scrolls = [];
+  let failNext = false;
+  const history = {
+    state: null,
+    pushes: [],
+    replaces: [],
+    backCalls: 0,
+    pushState(state, _title, url) { this.state = state; this.pushes.push({state, url}); },
+    replaceState(state, _title, url) { this.state = state; this.replaces.push({state, url}); },
+    back() { this.backCalls++; },
+  };
+  const document = {
+    querySelector: (selector) => selector === "[data-start-purchases]" ? null : selector === "[data-detail-drawer]" ? drawer : null,
+    querySelectorAll: (selector) => selector === "[data-task-row]" ? [row] : [],
+    createElement: () => new FakeElement(),
+    contains: (element) => element === row || element === button,
+  };
+  const window = {
+    location: {pathname: "/tasks", search: "?status=DRAFT"},
+    history,
+    scrollY: 275,
+    scrollTo: (value) => scrolls.push(value),
+    addEventListener(type, listener) { if (type === "popstate") popstateListeners.push(listener); },
+  };
+  const context = {
+    AbortController,
+    document,
+    window,
+    fetch: async (url, options) => {
+      requests.push({url, options});
+      if (failNext) {
+        failNext = false;
+        return {ok: false, headers: {get: () => "text/html"}, text: async () => ""};
+      }
+      return {ok: true, headers: {get: () => "text/html; charset=utf-8"}, text: async () => '<article data-task-detail-content>详情</article>'};
+    },
+  };
+  vm.runInNewContext(source, context, {filename: "tasks.js"});
+
+  return {
+    body, button, closeButton, drawer, history, requests, row, scrolls,
+    failNextRequest: () => { failNext = true; },
+    popstate: (event) => { history.state = event.state; popstateListeners.forEach((listener) => listener(event)); },
+    flush: () => new Promise((resolve) => setImmediate(resolve)),
+  };
+}

admin/internal/transport/webui/static/tasks.js

@@ -0,0 +1,167 @@
+(() => {
+  "use strict";
+  const form = document.querySelector("[data-start-purchases]");
+  if (!form) return;
+  const all = form.querySelector("[data-select-all]");
+  const summary = form.querySelector("[data-selection-summary]");
+  const button = form.querySelector("[data-start-button]");
+  const feedback = form.querySelector("[data-start-feedback]");
+  const boxes = () => [...form.querySelectorAll("input[data-task-id]")];
+  let selectionFrozen = false;
+  const parseCents = (value) => {
+    const match = /^(0|[1-9]\d*)\.(\d{2})$/.exec(value);
+    return match ? BigInt(match[1] + match[2]) : null;
+  };
+  const refresh = () => {
+    const available = boxes();
+    const selected = available.filter((box) => box.checked);
+    let cents = 0n;
+    let pricesValid = true;
+    selected.forEach((box) => {
+      const price = parseCents(box.dataset.price);
+      if (price === null) pricesValid = false;
+      else cents += price;
+    });
+    summary.textContent = `已选 ${selected.length} 条，最高总额 ¥${cents / 100n}.${(cents % 100n).toString().padStart(2, "0")}`;
+    button.disabled = !selected.length || !pricesValid;
+    if (!pricesValid) feedback.textContent = "所选任务金额无法安全汇总，请刷新后重选。";
+    if (all) {
+      all.checked = selected.length > 0 && selected.length === available.length;
+      all.indeterminate = selected.length > 0 && selected.length < available.length;
+      all.disabled = selectionFrozen || available.length === 0;
+    }
+  };
+  const freezeSelection = (frozen) => {
+    selectionFrozen = frozen;
+    boxes().forEach((box) => { box.disabled = frozen; });
+    refresh();
+  };
+  boxes().forEach((box) => box.addEventListener("change", refresh));
+  if (all) all.addEventListener("change", () => { boxes().forEach((box) => { box.checked = all.checked; }); refresh(); });
+  let frozenPayload = null;
+  let inFlight = false;
+  form.addEventListener("submit", async (event) => {
+    event.preventDefault();
+    const selected = boxes().filter((box) => box.checked);
+    if (!selected.length || inFlight) return;
+    const tasks = selected.map((box) => ({task_id: box.dataset.taskId, expected_task_version: Number(box.dataset.taskVersion)}));
+    if (tasks.some((item) => !Number.isSafeInteger(item.expected_task_version) || item.expected_task_version < 1)) { feedback.textContent = "任务版本无效，请刷新后重选。"; return; }
+    frozenPayload = frozenPayload || JSON.stringify({start_key: form.dataset.startKey, tasks});
+    inFlight = true; freezeSelection(true); button.disabled = true; button.textContent = "正在授权…";
+    try { const response = await fetch("/tasks/start-purchases", {method:"POST", headers:{"Content-Type":"application/json", "X-CSRF-Token":form.dataset.csrf}, body:frozenPayload});
+      if (response.ok) { window.location.reload(); return; }
+      if (response.status === 409) { feedback.textContent = "任务已变化，请刷新后重选。"; frozenPayload = null; freezeSelection(false); boxes().forEach((box) => { box.checked = false; }); refresh(); return; }
+      if (response.status === 400 || response.status === 401 || response.status === 403) { feedback.textContent = "请求未被接受，请刷新页面后重试。"; frozenPayload = null; freezeSelection(false); return; }
+      feedback.textContent = "结果暂时不明确，只能使用同一按钮原样重放。";
+    } catch (_) { feedback.textContent = "网络结果不明确，请使用同一按钮原样重试。"; }
+    finally { inFlight = false; button.textContent = "开始采购（只创建待付款订单）"; if (frozenPayload) button.disabled = false; }
+  });
+  refresh();
+})();
+
+(() => {
+  "use strict";
+  const drawer = document.querySelector("[data-detail-drawer]");
+  if (!drawer) return;
+  const body = drawer.querySelector("[data-detail-body]");
+  const closeButton = drawer.querySelector("[data-close-detail]");
+  const rows = [...document.querySelectorAll("[data-task-row]")];
+  const initialURL = window.location.pathname + window.location.search;
+  let focusTrigger = null;
+  let scrollPosition = window.scrollY;
+  let activeRequest = null;
+
+  const isInteractive = (target) => Boolean(target && typeof target.closest === "function" && target.closest("a,button,input,select,textarea,label,[contenteditable=true]"));
+  const showDrawer = () => {
+    if (!drawer.open) drawer.showModal();
+  };
+  const restoreList = () => {
+    if (activeRequest) {
+      activeRequest.abort();
+      activeRequest = null;
+    }
+    if (drawer.open) drawer.close();
+    window.scrollTo({top: scrollPosition, behavior: "auto"});
+    if (focusTrigger && document.contains(focusTrigger)) focusTrigger.focus({preventScroll: true});
+  };
+  const showError = (url, row, requestedFocus, pushHistory) => {
+    body.replaceChildren();
+    const message = document.createElement("p");
+    message.className = "drawer-feedback";
+    message.setAttribute("role", "alert");
+    message.textContent = "任务详情加载失败。请重试，或在完整页打开。";
+    const actions = document.createElement("p");
+    const retry = document.createElement("button");
+    retry.className = "button primary";
+    retry.type = "button";
+    retry.textContent = "重试";
+    retry.addEventListener("click", () => loadDetail(url, row, requestedFocus, pushHistory));
+    const fallback = document.createElement("a");
+    fallback.className = "button";
+    fallback.href = url;
+    fallback.textContent = "在完整页打开";
+    actions.className = "actions";
+    actions.append(retry, fallback);
+    body.append(message, actions);
+  };
+  const loadDetail = async (url, row, requestedFocus, pushHistory) => {
+    if (activeRequest) activeRequest.abort();
+    const requestController = new AbortController();
+    activeRequest = requestController;
+    focusTrigger = requestedFocus || focusTrigger;
+    if (pushHistory) scrollPosition = window.scrollY;
+    body.innerHTML = '<p class="drawer-feedback" role="status">正在加载任务详情…</p>';
+    showDrawer();
+    try {
+      const response = await fetch(url, {headers: {"X-CMBuyer-View": "drawer", "Accept": "text/html"}, credentials: "same-origin", signal: requestController.signal});
+      if (!response.ok || !String(response.headers.get("Content-Type") || "").toLowerCase().startsWith("text/html")) throw new Error("detail request rejected");
+      const fragment = await response.text();
+      if (!fragment.includes("data-task-detail-content")) throw new Error("detail fragment missing");
+      body.innerHTML = fragment;
+      if (pushHistory) window.history.pushState({cmbuyerDrawer: true, detailURL: url, focusTarget: requestedFocus === row ? "row" : "button"}, "", url);
+      closeButton.focus();
+    } catch (error) {
+      if (error.name !== "AbortError") showError(url, row, requestedFocus, pushHistory);
+    } finally {
+      if (activeRequest === requestController) activeRequest = null;
+    }
+  };
+  const requestClose = () => {
+    if (window.history.state && window.history.state.cmbuyerDrawer) window.history.back();
+    else restoreList();
+  };
+
+  window.history.replaceState({cmbuyerList: true, listURL: initialURL}, "", initialURL);
+  rows.forEach((row) => {
+    const url = row.dataset.detailUrl;
+    row.addEventListener("dblclick", (event) => {
+      if (!isInteractive(event.target)) loadDetail(url, row, row, true);
+    });
+    row.addEventListener("keydown", (event) => {
+      if (event.key === "Enter" && event.target === row) {
+        event.preventDefault();
+        loadDetail(url, row, row, true);
+      }
+    });
+    const button = row.querySelector("[data-open-detail]");
+    if (button) button.addEventListener("click", () => loadDetail(url, row, button, true));
+  });
+  closeButton.addEventListener("click", requestClose);
+  drawer.addEventListener("cancel", (event) => {
+    event.preventDefault();
+    requestClose();
+  });
+  window.addEventListener("popstate", (event) => {
+    if (event.state && event.state.cmbuyerDrawer) {
+      const row = rows.find((candidate) => candidate.dataset.detailUrl === event.state.detailURL);
+      if (!row) {
+        restoreList();
+        return;
+      }
+      const requestedFocus = event.state.focusTarget === "button" ? row.querySelector("[data-open-detail]") || row : row;
+      loadDetail(event.state.detailURL, row, requestedFocus, false);
+      return;
+    }
+    restoreList();
+  });
+})();

admin/internal/transport/webui/static/tasks.test.js

@@ -0,0 +1,138 @@
+"use strict";
+
+const test = require("node:test");
+const assert = require("node:assert/strict");
+const fs = require("node:fs");
+const path = require("node:path");
+const vm = require("node:vm");
+
+const source = fs.readFileSync(path.join(__dirname, "tasks.js"), "utf8");
+
+test("successful authorization sends numeric version and reloads", async () => {
+  const requests = [];
+  const harness = createHarness(async (_url, options) => {
+    requests.push(options);
+    return {ok: true, status: 200};
+  });
+
+  await harness.submit();
+
+  assert.equal(requests.length, 1);
+  assert.equal(requests[0].headers["Content-Type"], "application/json");
+  assert.equal(requests[0].headers["X-CSRF-Token"], "csrf-token");
+  const payload = JSON.parse(requests[0].body);
+  assert.equal(payload.start_key, "start-key");
+  assert.equal(typeof payload.tasks[0].expected_task_version, "number");
+  assert.equal(payload.tasks[0].expected_task_version, 7);
+  assert.equal(harness.reloads(), 1);
+});
+
+test("409 clears stale selection and requires a fresh choice", async () => {
+  const harness = createHarness(async () => ({ok: false, status: 409}));
+
+  await harness.submit();
+
+  assert.equal(harness.box.checked, false);
+  assert.equal(harness.box.disabled, false);
+  assert.equal(harness.button.disabled, true);
+  assert.match(harness.feedback.textContent, /任务已变化/);
+});
+
+for (const status of [400, 401, 403]) {
+  test(`${status} releases the frozen payload for a page refresh`, async () => {
+    const harness = createHarness(async () => ({ok: false, status}));
+
+    await harness.submit();
+
+    assert.equal(harness.box.checked, true);
+    assert.equal(harness.box.disabled, false);
+    assert.equal(harness.button.disabled, false);
+    assert.match(harness.feedback.textContent, /刷新页面后重试/);
+  });
+}
+
+test("5xx retries the byte-identical frozen payload", async () => {
+  const bodies = [];
+  const harness = createHarness(async (_url, options) => {
+    bodies.push(options.body);
+    return {ok: false, status: 503};
+  });
+
+  await harness.submit();
+  assert.equal(harness.box.disabled, true);
+  assert.equal(harness.button.disabled, false);
+  assert.match(harness.feedback.textContent, /原样重放/);
+  await harness.submit();
+
+  assert.equal(bodies.length, 2);
+  assert.equal(bodies[1], bodies[0]);
+});
+
+test("network ambiguity retries the same payload and can finish", async () => {
+  const bodies = [];
+  let call = 0;
+  const harness = createHarness(async (_url, options) => {
+    bodies.push(options.body);
+    call++;
+    if (call === 1) throw new Error("network result unknown");
+    return {ok: true, status: 200};
+  });
+
+  await harness.submit();
+  assert.equal(harness.box.disabled, true);
+  assert.match(harness.feedback.textContent, /原样重试/);
+  await harness.submit();
+
+  assert.deepEqual(bodies, [bodies[0], bodies[0]]);
+  assert.equal(harness.reloads(), 1);
+});
+
+function createHarness(fetchImplementation) {
+  class FakeElement {
+    constructor() {
+      this.dataset = {};
+      this.checked = false;
+      this.disabled = false;
+      this.indeterminate = false;
+      this.textContent = "";
+      this.listeners = {};
+    }
+
+    addEventListener(type, listener) {
+      this.listeners[type] = listener;
+    }
+  }
+
+  const box = new FakeElement();
+  box.checked = true;
+  box.dataset = {taskId: "task-id", taskVersion: "7", price: "12.80"};
+  const selectAll = new FakeElement();
+  const summary = new FakeElement();
+  const button = new FakeElement();
+  const feedback = new FakeElement();
+  const form = new FakeElement();
+  form.dataset = {startKey: "start-key", csrf: "csrf-token"};
+  form.querySelector = (selector) => ({
+    "[data-select-all]": selectAll,
+    "[data-selection-summary]": summary,
+    "[data-start-button]": button,
+    "[data-start-feedback]": feedback,
+  })[selector] || null;
+  form.querySelectorAll = (selector) => selector === "input[data-task-id]" ? [box] : [];
+
+  let reloadCount = 0;
+  const context = {
+    document: {querySelector: (selector) => selector === "[data-start-purchases]" ? form : null},
+    fetch: fetchImplementation,
+    window: {location: {reload: () => { reloadCount++; }}},
+  };
+  vm.runInNewContext(source, context, {filename: "tasks.js"});
+
+  return {
+    box,
+    button,
+    feedback,
+    reloads: () => reloadCount,
+    submit: () => form.listeners.submit({preventDefault() {}}),
+  };
+}

admin/internal/transport/webui/templates/login.html

@@ -0,0 +1,63 @@
+{{define "login.html"}}
+<!doctype html>
+<html lang="zh-CN">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>登录 · 采购服务</title>
+  <style>
+    :root { color-scheme: light; --bg:#f4f7fb; --surface:#fff; --text:#172033; --muted:#526079; --border:#cfd8e6; --primary:#155eef; --primary-hover:#0b4ed1; --primary-soft:#eaf1ff; --danger:#b42318; --danger-soft:#fef3f2; --focus:#ffbf47; --shadow:0 12px 30px rgba(23,32,51,.1); font-family:"Segoe UI","Microsoft YaHei UI",system-ui,sans-serif; }
+    * { box-sizing:border-box; }
+    html { min-width:320px; background:var(--bg); }
+    body { min-height:100dvh; margin:0; color:var(--text); background:var(--bg); font-size:16px; line-height:1.55; }
+    button,input { font:inherit; }
+    :focus-visible { outline:3px solid var(--focus); outline-offset:3px; }
+    .skip-link { position:fixed; z-index:10; top:8px; left:8px; padding:10px 14px; color:#fff; background:var(--text); transform:translateY(-160%); }
+    .skip-link:focus { transform:translateY(0); }
+    main { display:grid; min-height:100dvh; place-items:center; padding:24px 16px; }
+    .card { width:min(100%,440px); padding:32px; border:1px solid var(--border); border-radius:14px; background:var(--surface); box-shadow:var(--shadow); }
+    .brand { display:flex; align-items:center; gap:10px; margin:0 0 24px; font-size:1rem; font-weight:700; }
+    .brand-mark { display:grid; width:32px; height:32px; place-items:center; border-radius:8px; color:#fff; background:var(--primary); font-size:.82rem; }
+    h1 { margin:0; font-size:clamp(1.6rem,5vw,2rem); line-height:1.25; }
+    .intro { margin:8px 0 24px; color:var(--muted); }
+    .field { margin-top:16px; }
+    label { display:block; margin-bottom:6px; font-weight:700; }
+    input { width:100%; min-height:44px; padding:10px 12px; border:1px solid #9ba9bc; border-radius:8px; color:var(--text); background:#fff; }
+    input[aria-invalid="true"] { border-color:var(--danger); box-shadow:0 0 0 1px var(--danger); }
+    .hint { margin:5px 0 0; color:var(--muted); font-size:.875rem; }
+    .error { margin:0 0 18px; padding:12px 14px; border-left:4px solid var(--danger); border-radius:6px; color:var(--danger); background:var(--danger-soft); font-weight:650; }
+    .submit { width:100%; min-height:44px; margin-top:24px; padding:10px 16px; border:1px solid transparent; border-radius:8px; color:#fff; background:var(--primary); font-weight:700; cursor:pointer; transition:background-color 180ms ease-out; }
+    .submit:hover { background:var(--primary-hover); }
+    .notice { margin:20px 0 0; padding:12px 14px; border:1px solid #b9cffc; border-radius:8px; color:#29466f; background:var(--primary-soft); font-size:.9rem; }
+    @media (max-width:420px) { main { padding-inline:12px; } .card { padding:24px 16px; } }
+    @media (prefers-reduced-motion:reduce) { *,*::before,*::after { transition-duration:.01ms !important; animation-duration:.01ms !important; } }
+  </style>
+</head>
+<body>
+  <a class="skip-link" href="#main">跳到主要内容</a>
+  <main id="main">
+    <section class="card" aria-labelledby="login-title">
+      <p class="brand"><span class="brand-mark" aria-hidden="true">采</span><span>采购服务</span></p>
+      <h1 id="login-title">管理端登录</h1>
+      <p class="intro">登录后进入采购任务工作台。设备身份不能使用此入口。</p>
+      {{if .Error}}<p class="error" role="alert">{{.Error}}</p>{{end}}
+      <form method="post" action="/login">
+        <input type="hidden" name="csrf_token" value="{{.CSRFToken}}">
+        <input type="hidden" name="return_to" value="{{.ReturnTo}}">
+        <div class="field">
+          <label for="username">账号</label>
+          <input id="username" name="username" type="text" value="{{.Username}}" autocomplete="username" required aria-invalid="{{if .Error}}true{{else}}false{{end}}" aria-describedby="username-hint">
+          <p class="hint" id="username-hint">使用采购管理员账号登录。</p>
+        </div>
+        <div class="field">
+          <label for="password">密码</label>
+          <input id="password" name="password" type="password" autocomplete="current-password" required aria-invalid="{{if .Error}}true{{else}}false{{end}}">
+        </div>
+        <button class="submit" type="submit">登录并继续</button>
+      </form>
+      <p class="notice">系统只创建待付款订单，付款始终由人完成。</p>
+    </section>
+  </main>
+</body>
+</html>
+{{end}}

admin/internal/transport/webui/templates/task-detail.html

@@ -0,0 +1,38 @@
+{{define "task-detail-page.html"}}
+<!doctype html>
+<html lang="zh-CN">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>{{.Detail.Task.Title}} · 任务详情 · 采购服务</title>
+  <style>
+    :root{--bg:#f4f7fb;--surface:#fff;--text:#172033;--muted:#526079;--border:#cfd8e6;--primary:#155eef;--danger:#b42318;--success:#067647;--focus:#ffbf47;font-family:"Segoe UI","Microsoft YaHei UI",system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;color:var(--text);background:var(--bg);font-size:16px;line-height:1.55}a{color:#124cc5;text-underline-offset:3px}:focus-visible{outline:3px solid var(--focus);outline-offset:3px}.skip{position:fixed;z-index:100;top:8px;left:8px;padding:10px;color:#fff;background:#172033;transform:translateY(-160%)}.skip:focus{transform:translateY(0)}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;padding:10px clamp(16px,4vw,40px);border-bottom:1px solid var(--border);background:var(--surface)}.brand{color:var(--text);font-weight:700;text-decoration:none}.brand b{display:inline-grid;place-items:center;width:32px;height:32px;margin-right:8px;border-radius:8px;background:var(--primary);color:#fff;font-size:.82rem}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 14px;border:1px solid var(--border);border-radius:8px;color:var(--text);background:#fff;font-weight:700;text-decoration:none}.detail-page{width:min(100% - 32px,1120px);margin:28px auto 48px}.detail-shell{display:grid;gap:16px}.detail-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.detail-head h1{margin:0;font-size:clamp(1.45rem,3vw,2rem)}.detail-head p{margin:4px 0;color:var(--muted)}.status{display:inline-block;padding:4px 10px;border-radius:999px;background:#eaf1ff;color:#173d8f;font-size:.88rem;font-weight:700;white-space:nowrap}.safety{margin:0;padding:13px 15px;border:1px solid #a9c3f7;border-left:5px solid var(--primary);border-radius:10px;background:#edf3ff}.detail-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(250px,320px);gap:16px}.detail-card{overflow:hidden;border:1px solid var(--border);border-radius:12px;background:var(--surface)}.detail-card>header,.detail-card>.detail-body{padding:16px 18px}.detail-card>header{border-bottom:1px solid var(--border)}.detail-card h2,.detail-card h3{margin:0}.detail-card header p,.empty-note{margin:4px 0 0;color:var(--muted)}.facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:0}.facts div{min-width:0;padding:11px;border:1px solid var(--border);border-radius:8px;background:#f8fafc}.facts dt{font-size:.82rem;color:var(--muted);font-weight:700}.facts dd{margin:3px 0 0;overflow-wrap:anywhere;font-weight:650}.audit-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}.audit-list li{padding:12px;border:1px solid var(--border);border-radius:8px}.audit-list p{margin:4px 0}.mono{font-family:Consolas,"SFMono-Regular",monospace;overflow-wrap:anywhere}.evidence-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.evidence{margin:0}.evidence img{display:block;width:100%;height:auto;max-height:520px;object-fit:contain;border:1px solid var(--border);border-radius:8px;background:#eef2f7}.evidence figcaption{margin-top:7px;color:var(--muted);font-size:.85rem}.section-stack{display:grid;gap:16px}.privacy-note{margin:12px 0 0;color:var(--muted);font-size:.88rem}@media(max-width:760px){.detail-grid{grid-template-columns:1fr}.detail-head{display:grid}.facts{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}
+  </style>
+</head>
+<body>
+  <a class="skip" href="#main">跳到主要内容</a>
+  <header class="topbar"><a class="brand" href="/tasks"><b aria-hidden="true">采</b>采购服务</a><a class="button" href="/tasks">返回任务列表</a></header>
+  <main class="detail-page" id="main">{{template "task-detail-content" .}}</main>
+</body>
+</html>
+{{end}}
+
+{{define "task-detail-content"}}
+<article class="detail-shell" data-task-detail-content data-task-id="{{.Detail.Task.ID}}">
+  <header class="detail-head"><div><h1>{{.Detail.Task.Title}}</h1><p>任务 <span class="mono">{{.Detail.Task.ID}}</span> · 版本 {{.Detail.Task.Version}}</p></div><span class="status">{{statusLabel .Detail.Task.Status}}</span></header>
+  <p class="safety"><strong>{{taskSafetyTitle .Detail.Task.Status}}</strong> {{taskSafetyText .Detail.Task.Status}}</p>
+  <div class="detail-grid">
+    <div class="section-stack">
+      <section class="detail-card" aria-labelledby="task-facts-title"><header><h2 id="task-facts-title">任务要求</h2><p>管理员锁定的采购边界；详情页不会触发设备动作。</p></header><div class="detail-body"><dl class="facts"><div><dt>商品</dt><dd><a href="{{canonicalURL .Detail.Task.GoodsID}}" target="_blank" rel="noopener noreferrer">goods_id {{.Detail.Task.GoodsID}}</a></dd></div><div><dt>目标规格</dt><dd>{{.Detail.Task.SKUColor}} / {{.Detail.Task.SKUSize}}</dd></div><div><dt>数量</dt><dd>{{.Detail.Task.Quantity}} 件</dd></div><div><dt>最高总价</dt><dd>¥{{.Detail.Task.MaxTotalPrice}}</dd></div><div><dt>创建时间（上海）</dt><dd><time datetime="{{shanghaiDateTime .Detail.Task.CreatedAt}}">{{shanghaiTime .Detail.Task.CreatedAt}}</time></dd></div><div><dt>更新时间（上海）</dt><dd><time datetime="{{shanghaiDateTime .Detail.Task.UpdatedAt}}">{{shanghaiTime .Detail.Task.UpdatedAt}}</time></dd></div></dl></div></section>
+
+      <section class="detail-card" aria-labelledby="execution-title"><header><h2 id="execution-title">设备执行事实</h2><p>只展示数据库中已存在的 attempt；T-204 不创建执行记录。</p></header><div class="detail-body">{{if .Detail.Attempts}}<ol class="audit-list">{{range .Detail.Attempts}}<li><h3>Attempt <span class="mono">{{.ID}}</span></h3><p>状态：{{attemptStatusLabel .Status}} · 领取代次 {{.ClaimGeneration}}</p><p>开始：<time datetime="{{shanghaiDateTime .StartedAt}}">{{shanghaiTime .StartedAt}}</time>{{with .FinishedAt}} · 结束：<time datetime="{{shanghaiDateTime .}}">{{shanghaiTime .}}</time>{{end}}</p>{{with .FailureCode}}<p>失败码：<span class="mono">{{.}}</span></p>{{end}}{{if or .Gate1UnitPrice .Gate2UnitPrice .QuantityRead .ConfirmAmount}}<p>已有读数：{{with .Gate1UnitPrice}}闸门一 ¥{{.}}；{{end}}{{with .Gate2UnitPrice}}闸门二 ¥{{.}}；{{end}}{{with .QuantityRead}}数量 {{.}}；{{end}}{{with .ConfirmAmount}}确认页 ¥{{.}}{{end}}</p>{{else}}<p class="empty-note">暂无规格、价格或数量读数。</p>{{end}}</li>{{end}}</ol>{{else}}<p class="empty-note">暂无设备执行记录。</p>{{end}}</div></section>
+
+      <section class="detail-card" aria-labelledby="evidence-title"><header><h2 id="evidence-title">内部截图</h2><p>INTERNAL_RAW 仅供已登录管理员审计，不代表价格闸门通过或人工批准。</p></header><div class="detail-body">{{if .Detail.Evidence}}<div class="evidence-grid">{{range .Detail.Evidence}}<figure class="evidence"><img src="/evidence/{{.ID}}" width="{{.Width}}" height="{{.Height}}" loading="lazy" alt="规格面板内部审计截图，采集于 {{shanghaiTime .CapturedAt}}"><figcaption>{{evidenceKindLabel .Kind}}（<span class="mono">{{.Kind}}</span>）· {{formatBytes .ByteSize}} · <time datetime="{{shanghaiDateTime .CapturedAt}}">{{shanghaiTime .CapturedAt}}</time><br>Attempt <span class="mono">{{.AttemptID}}</span></figcaption></figure>{{end}}</div>{{else}}<p class="empty-note">暂无内部截图。只有已认证设备显式上传的 PNG 会出现在这里。</p>{{end}}<p class="privacy-note">截图可能包含页面已显示的地址或手机号；系统不提取、索引或写入日志。完整 XML、外部支付页和支付凭据不会上传。</p></div></section>
+
+      <section class="detail-card" aria-labelledby="submission-title"><header><h2 id="submission-title">提交围栏与结果</h2><p>只读审计；本页没有重试、再次提交或付款动作。</p></header><div class="detail-body">{{if .Detail.Submissions}}<ol class="audit-list">{{range .Detail.Submissions}}<li><h3>Submission <span class="mono">{{.ID}}</span></h3><p>状态：{{submissionStatusLabel .Status}}</p><p>闸门一 ¥{{.Gate1UnitPrice}}；闸门二 ¥{{.Gate2UnitPrice}}；数量 {{.QuantityRead}}；确认页 ¥{{.ConfirmAmount}}</p><p>建立：<time datetime="{{shanghaiDateTime .CreatedAt}}">{{shanghaiTime .CreatedAt}}</time>{{with .ResolvedAt}} · 调和：<time datetime="{{shanghaiDateTime .}}">{{shanghaiTime .}}</time>{{end}}</p></li>{{end}}</ol>{{else}}<p class="empty-note">尚未建立提交围栏；详情页不会创建或释放围栏。</p>{{end}}</div></section>
+    </div>
+
+    <aside class="section-stack" aria-label="任务状态摘要"><section class="detail-card"><header><h2>开始采购授权</h2><p>锁定任务字段和最高总价，不授权付款。</p></header><div class="detail-body">{{if .Detail.Authorizations}}<ol class="audit-list">{{range .Detail.Authorizations}}<li><h3>{{authorizationStatusLabel .Status}}</h3><p class="mono">{{.ID}}</p><p>任务版本 {{.TaskVersion}} · 上限 ¥{{.TotalPriceCap}}</p><p>授权人：{{.CreatedBy}}</p><p><time datetime="{{shanghaiDateTime .CreatedAt}}">{{shanghaiTime .CreatedAt}}</time> 至 <time datetime="{{shanghaiDateTime .ExpiresAt}}">{{shanghaiTime .ExpiresAt}}</time></p></li>{{end}}</ol>{{else}}<p class="empty-note">尚未开始采购，没有授权记录。</p>{{end}}</div></section><section class="detail-card"><header><h2>固定边界</h2></header><div class="detail-body"><ul><li>系统只创建待付款订单，不自动付款。</li><li>截图仅供审计，不替代实时三道价格闸门。</li><li>围栏后只能调和同一提交，禁止再次点击。</li></ul></div></section></aside>
+  </div>
+</article>
+{{end}}

admin/internal/transport/webui/webui.go

@@ -0,0 +1,162 @@
+// Package webui 渲染采购服务当前可用的服务端页面。
+package webui
+
+import (
+	"embed"
+	"fmt"
+	"html/template"
+	"io"
+	"time"
+
+	"cmbuyer/admin/internal/taskdetail"
+	"cmbuyer/admin/internal/tasks"
+)
+
+//go:embed templates/*.html
+var templateFiles embed.FS
+
+//go:embed static/tasks.js
+var tasksScript []byte
+
+var shanghaiLocation = time.FixedZone("Asia/Shanghai", 8*60*60)
+
+var templates = template.Must(template.New("webui").Funcs(template.FuncMap{
+	"list":                     func(values ...any) []any { return values },
+	"statusLabel":              statusLabel,
+	"shanghaiDateTime":         func(value time.Time) string { return value.In(shanghaiLocation).Format(time.RFC3339) },
+	"shanghaiTime":             func(value time.Time) string { return value.In(shanghaiLocation).Format("2006-01-02 15:04") },
+	"canonicalURL":             tasks.CanonicalURL,
+	"formatBytes":              formatBytes,
+	"taskSafetyTitle":          taskSafetyTitle,
+	"taskSafetyText":           taskSafetyText,
+	"authorizationStatusLabel": authorizationStatusLabel,
+	"attemptStatusLabel":       attemptStatusLabel,
+	"submissionStatusLabel":    submissionStatusLabel,
+	"evidenceKindLabel":        evidenceKindLabel,
+}).ParseFS(templateFiles, "templates/*.html"))
+
+// LoginData 是登录页面所需的非敏感展示数据。
+type LoginData struct {
+	CSRFToken string
+	ReturnTo  string
+	Username  string
+	Error     string
+}
+
+// TasksData 是受保护的建单与任务工作台页面所需数据。
+type TasksData struct {
+	CSRFToken    string
+	Tasks        []tasks.TaskRow
+	Filter       tasks.TaskFilter
+	FilterErrors tasks.Errors
+	HasFilter    bool
+	StartKey     string
+	Form         tasks.Form
+	Errors       tasks.Errors
+	OpenForm     bool
+	FullPage     bool
+	FocusField   string
+	Success      bool
+}
+
+type TaskDetailData struct{ Detail taskdetail.Detail }
+
+// RenderLogin 写入登录页。
+func RenderLogin(writer io.Writer, data LoginData) error {
+	return templates.ExecuteTemplate(writer, "login.html", data)
+}
+
+// RenderTasks 写入登录后的受保护任务页。
+func RenderTasks(writer io.Writer, data TasksData) error {
+	return templates.ExecuteTemplate(writer, "tasks.html", data)
+}
+
+func RenderTaskDetailPage(writer io.Writer, data TaskDetailData) error {
+	return templates.ExecuteTemplate(writer, "task-detail-page.html", data)
+}
+
+func RenderTaskDetailFragment(writer io.Writer, data TaskDetailData) error {
+	return templates.ExecuteTemplate(writer, "task-detail-content", data)
+}
+
+func TasksScript() []byte { return tasksScript }
+
+func statusLabel(status string) string {
+	labels := map[string]string{
+		"DRAFT":                   "待开始",
+		"PENDING":                 "已授权待领取",
+		"CLAIMED":                 "已领取",
+		"ORDERING":                "执行中",
+		"NEEDS_MANUAL":            "待人工处理",
+		"WAITING_PAYMENT":         "待付款",
+		"RECONCILIATION_REQUIRED": "围栏后待调和",
+		"SUCCEEDED":               "已完成",
+		"FAILED":                  "失败",
+		"CANCELED":                "已取消",
+	}
+	if label, ok := labels[status]; ok {
+		return label
+	}
+	return "未知状态"
+}
+
+func taskSafetyTitle(status string) string {
+	if status == "WAITING_PAYMENT" {
+		return "订单已创建，系统尚未付款。"
+	}
+	if status == "RECONCILIATION_REQUIRED" {
+		return "订单可能已创建，只能调和同一提交。"
+	}
+	return "系统只创建待付款订单，不会自动付款。"
+}
+
+func taskSafetyText(status string) string {
+	if status == "DRAFT" {
+		return "创建任务不构成授权；请回到列表勾选后开始采购。"
+	}
+	if status == "RECONCILIATION_REQUIRED" {
+		return "围栏保持占用，禁止重新授权、再次提交或释放。"
+	}
+	return "截图只供内部审计，不替代实时价格闸门，也不会触发设备动作。"
+}
+
+func authorizationStatusLabel(status string) string {
+	labels := map[string]string{"ACTIVE": "授权有效", "CLAIMED": "已被领取", "FENCED": "提交围栏已建立", "CONSUMED": "授权已消费", "EXPIRED": "授权已过期", "ABANDONED": "授权已关闭"}
+	if value, ok := labels[status]; ok {
+		return value
+	}
+	return "未知授权状态"
+}
+
+func attemptStatusLabel(status string) string {
+	labels := map[string]string{"CLAIMED": "已领取", "ORDERING": "执行中", "FAILED": "围栏前失败", "FENCED": "已建立围栏", "ABANDONED": "已安全停止"}
+	if value, ok := labels[status]; ok {
+		return value
+	}
+	return "未知执行状态"
+}
+
+func submissionStatusLabel(status string) string {
+	labels := map[string]string{"FENCED": "围栏已建立", "SUBMITTED": "已创建待付款订单", "RECONCILIATION_REQUIRED": "结果待调和", "MANUAL_RESOLVED": "已人工调和"}
+	if value, ok := labels[status]; ok {
+		return value
+	}
+	return "未知提交状态"
+}
+
+func evidenceKindLabel(kind string) string {
+	if kind == "SKU_PANEL_GATE_1" {
+		return "规格面板 · 闸门一"
+	}
+	return "内部截图"
+}
+
+func formatBytes(value int64) string {
+	if value >= 1<<20 {
+		return fmt.Sprintf("%.1f MiB", float64(value)/(1<<20))
+	}
+	if value >= 1<<10 {
+		return fmt.Sprintf("%.1f KiB", float64(value)/(1<<10))
+	}
+	return fmt.Sprintf("%d B", value)
+}

admin/migrations/00001_core_data.sql

@@ -0,0 +1,148 @@
+-- +goose Up
+CREATE TABLE tasks (
+  id TEXT PRIMARY KEY,
+  source TEXT NOT NULL CHECK (source IN ('MANUAL', 'EXCEL', 'ERP')),
+  source_ref TEXT,
+  title TEXT NOT NULL,
+  goods_id TEXT NOT NULL,
+  sku_color TEXT NOT NULL,
+  sku_size TEXT NOT NULL,
+  quantity INTEGER NOT NULL CHECK (quantity > 0 AND typeof(quantity) = 'integer'),
+  max_total_price TEXT NOT NULL CHECK (
+    max_total_price <> ''
+    AND max_total_price NOT GLOB '*[^0-9.]*'
+    AND length(max_total_price) - length(replace(max_total_price, '.', '')) <= 1
+    AND max_total_price <> '.'
+    AND (instr(max_total_price, '.') = 0 OR (
+      instr(max_total_price, '.') > 1
+      AND length(max_total_price) > instr(max_total_price, '.')
+    ))
+  ),
+  reference_asset_id TEXT,
+  status TEXT NOT NULL CHECK (status IN (
+    'DRAFT', 'PENDING', 'CLAIMED', 'RUNNING', 'WAITING_CONFIRMATION',
+    'PENDING_RETRIAL', 'AUTHORIZED', 'ORDERING', 'WAITING_PAYMENT',
+    'RECONCILIATION_REQUIRED', 'NEEDS_MANUAL', 'SUCCEEDED', 'CANCELED'
+  )),
+  version INTEGER NOT NULL DEFAULT 1 CHECK (version > 0 AND typeof(version) = 'integer'),
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL
+);
+
+CREATE TABLE spec_trials (
+  id TEXT PRIMARY KEY,
+  task_id TEXT NOT NULL REFERENCES tasks(id),
+  attempt INTEGER NOT NULL CHECK (attempt > 0 AND typeof(attempt) = 'integer'),
+  product_title TEXT NOT NULL,
+  selected_color TEXT NOT NULL,
+  selected_size TEXT NOT NULL,
+  unit_price TEXT NOT NULL CHECK (
+    unit_price <> ''
+    AND unit_price NOT GLOB '*[^0-9.]*'
+    AND length(unit_price) - length(replace(unit_price, '.', '')) <= 1
+    AND unit_price <> '.'
+    AND (instr(unit_price, '.') = 0 OR (
+      instr(unit_price, '.') > 1
+      AND length(unit_price) > instr(unit_price, '.')
+    ))
+  ),
+  total_price TEXT NOT NULL CHECK (
+    total_price <> ''
+    AND total_price NOT GLOB '*[^0-9.]*'
+    AND length(total_price) - length(replace(total_price, '.', '')) <= 1
+    AND total_price <> '.'
+    AND (instr(total_price, '.') = 0 OR (
+      instr(total_price, '.') > 1
+      AND length(total_price) > instr(total_price, '.')
+    ))
+  ),
+  evidence_sha256 TEXT NOT NULL,
+  created_at TEXT NOT NULL,
+  UNIQUE (task_id, attempt),
+  UNIQUE (task_id, id)
+);
+
+CREATE TABLE order_authorizations (
+  id TEXT PRIMARY KEY,
+  task_id TEXT NOT NULL REFERENCES tasks(id),
+  spec_trial_id TEXT NOT NULL REFERENCES spec_trials(id),
+  version INTEGER NOT NULL CHECK (version > 0 AND typeof(version) = 'integer'),
+  goods_id TEXT NOT NULL,
+  sku_color TEXT NOT NULL,
+  sku_size TEXT NOT NULL,
+  quantity INTEGER NOT NULL CHECK (quantity > 0 AND typeof(quantity) = 'integer'),
+  authorized_unit_price TEXT NOT NULL CHECK (
+    authorized_unit_price <> ''
+    AND authorized_unit_price NOT GLOB '*[^0-9.]*'
+    AND length(authorized_unit_price) - length(replace(authorized_unit_price, '.', '')) <= 1
+    AND authorized_unit_price <> '.'
+    AND (instr(authorized_unit_price, '.') = 0 OR (
+      instr(authorized_unit_price, '.') > 1
+      AND length(authorized_unit_price) > instr(authorized_unit_price, '.')
+    ))
+  ),
+  total_price_cap TEXT NOT NULL CHECK (
+    total_price_cap <> ''
+    AND total_price_cap NOT GLOB '*[^0-9.]*'
+    AND length(total_price_cap) - length(replace(total_price_cap, '.', '')) <= 1
+    AND total_price_cap <> '.'
+    AND (instr(total_price_cap, '.') = 0 OR (
+      instr(total_price_cap, '.') > 1
+      AND length(total_price_cap) > instr(total_price_cap, '.')
+    ))
+  ),
+  note TEXT,
+  status TEXT NOT NULL CHECK (status IN (
+    'PENDING_DELIVERY', 'DELIVERED', 'ACKNOWLEDGED', 'EXECUTING', 'FENCED',
+    'CONSUMED', 'SUPERSEDED', 'EXPIRED'
+  )),
+  created_by TEXT NOT NULL,
+  created_at TEXT NOT NULL,
+  expires_at TEXT NOT NULL,
+  UNIQUE (task_id, version),
+  UNIQUE (task_id, id),
+  FOREIGN KEY (task_id, spec_trial_id) REFERENCES spec_trials(task_id, id)
+);
+
+CREATE TABLE order_submissions (
+  id TEXT PRIMARY KEY,
+  task_id TEXT NOT NULL REFERENCES tasks(id),
+  authorization_id TEXT NOT NULL REFERENCES order_authorizations(id),
+  command_id TEXT NOT NULL,
+  dry_run_id TEXT NOT NULL,
+  status TEXT NOT NULL CHECK (status IN (
+    'FENCED', 'SUBMITTED', 'RECONCILIATION_REQUIRED', 'MANUAL_RESOLVED'
+  )),
+  verified_unit_price TEXT NOT NULL CHECK (
+    verified_unit_price <> ''
+    AND verified_unit_price NOT GLOB '*[^0-9.]*'
+    AND length(verified_unit_price) - length(replace(verified_unit_price, '.', '')) <= 1
+    AND verified_unit_price <> '.'
+    AND (instr(verified_unit_price, '.') = 0 OR (
+      instr(verified_unit_price, '.') > 1
+      AND length(verified_unit_price) > instr(verified_unit_price, '.')
+    ))
+  ),
+  quantity_read INTEGER NOT NULL CHECK (quantity_read > 0 AND typeof(quantity_read) = 'integer'),
+  confirm_page_amount TEXT NOT NULL CHECK (
+    confirm_page_amount <> ''
+    AND confirm_page_amount NOT GLOB '*[^0-9.]*'
+    AND length(confirm_page_amount) - length(replace(confirm_page_amount, '.', '')) <= 1
+    AND confirm_page_amount <> '.'
+    AND (instr(confirm_page_amount, '.') = 0 OR (
+      instr(confirm_page_amount, '.') > 1
+      AND length(confirm_page_amount) > instr(confirm_page_amount, '.')
+    ))
+  ),
+  created_at TEXT NOT NULL,
+  resolved_at TEXT,
+  UNIQUE (authorization_id),
+  UNIQUE (command_id),
+  FOREIGN KEY (task_id, authorization_id) REFERENCES order_authorizations(task_id, id)
+);
+
+-- +goose Down
+DROP TABLE order_submissions;
+DROP TABLE order_authorizations;
+DROP TABLE spec_trials;
+DROP TABLE tasks;

admin/migrations/00002_single_pass_model.sql

@@ -0,0 +1,333 @@
+-- +goose Up
+-- v1 的试选/锁旧价记录无法安全推断为单趟执行事实。先在同一事务中拒绝它们，
+-- 避免删除审计数据后再尝试猜测映射。
+CREATE TABLE single_pass_upgrade_guard (
+  valid INTEGER NOT NULL CHECK (valid = 1)
+);
+
+INSERT INTO single_pass_upgrade_guard (valid)
+SELECT CASE WHEN
+  (SELECT COUNT(*) FROM spec_trials) = 0
+  AND (SELECT COUNT(*) FROM order_authorizations) = 0
+  AND (SELECT COUNT(*) FROM order_submissions) = 0
+  AND (SELECT COUNT(*) FROM tasks WHERE source <> 'MANUAL' OR status <> 'DRAFT') = 0
+  -- v2 的金额边界是严格正数；不把 v1 中不能无损纳入该边界的数据悄悄改写。
+  AND (SELECT COUNT(*) FROM tasks WHERE
+    max_total_price = ''
+    OR max_total_price GLOB '*[^0-9.]*'
+    OR length(max_total_price) - length(replace(max_total_price, '.', '')) > 1
+    OR max_total_price = '.'
+    OR (instr(max_total_price, '.') > 0 AND (
+      instr(max_total_price, '.') = 1
+      OR length(max_total_price) = instr(max_total_price, '.')
+      OR length(max_total_price) - instr(max_total_price, '.') > 2
+    ))
+    OR replace(replace(max_total_price, '.', ''), '0', '') = ''
+  ) = 0
+THEN 1 ELSE 0 END;
+
+DROP TABLE single_pass_upgrade_guard;
+
+ALTER TABLE tasks RENAME TO tasks_v1;
+DROP TABLE order_submissions;
+DROP TABLE order_authorizations;
+DROP TABLE spec_trials;
+
+CREATE TABLE tasks (
+  id TEXT PRIMARY KEY,
+  source TEXT NOT NULL CHECK (source IN ('MANUAL', 'EXCEL', 'ERP')),
+  source_ref TEXT,
+  title TEXT NOT NULL,
+  goods_id TEXT NOT NULL,
+  sku_color TEXT NOT NULL,
+  sku_size TEXT NOT NULL,
+  quantity INTEGER NOT NULL CHECK (quantity > 0 AND typeof(quantity) = 'integer'),
+  max_total_price TEXT NOT NULL CHECK (
+    max_total_price <> ''
+    AND max_total_price NOT GLOB '*[^0-9.]*'
+    AND length(max_total_price) - length(replace(max_total_price, '.', '')) <= 1
+    AND max_total_price <> '.'
+    AND (instr(max_total_price, '.') = 0 OR (
+      instr(max_total_price, '.') > 1
+      AND length(max_total_price) > instr(max_total_price, '.')
+      AND length(max_total_price) - instr(max_total_price, '.') <= 2
+    ))
+    AND replace(replace(max_total_price, '.', ''), '0', '') <> ''
+  ),
+  reference_asset_id TEXT,
+  status TEXT NOT NULL CHECK (status IN (
+    'DRAFT', 'PENDING', 'CLAIMED', 'ORDERING', 'NEEDS_MANUAL', 'WAITING_PAYMENT',
+    'RECONCILIATION_REQUIRED', 'SUCCEEDED', 'FAILED', 'CANCELED'
+  )),
+  version INTEGER NOT NULL DEFAULT 1 CHECK (version > 0 AND typeof(version) = 'integer'),
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL
+);
+
+INSERT INTO tasks (
+  id, source, source_ref, title, goods_id, sku_color, sku_size, quantity, max_total_price,
+  reference_asset_id, status, version, created_at, updated_at
+)
+SELECT
+  id, source, source_ref, title, goods_id, sku_color, sku_size, quantity, max_total_price,
+  reference_asset_id, status, version, created_at, updated_at
+FROM tasks_v1;
+
+DROP TABLE tasks_v1;
+
+CREATE TABLE order_authorizations (
+  id TEXT PRIMARY KEY,
+  task_id TEXT NOT NULL REFERENCES tasks(id),
+  task_version INTEGER NOT NULL CHECK (task_version > 0 AND typeof(task_version) = 'integer'),
+  start_key TEXT NOT NULL,
+  goods_id TEXT NOT NULL,
+  sku_color TEXT NOT NULL,
+  sku_size TEXT NOT NULL,
+  quantity INTEGER NOT NULL CHECK (quantity > 0 AND typeof(quantity) = 'integer'),
+  total_price_cap TEXT NOT NULL CHECK (
+    total_price_cap <> ''
+    AND total_price_cap NOT GLOB '*[^0-9.]*'
+    AND length(total_price_cap) - length(replace(total_price_cap, '.', '')) <= 1
+    AND total_price_cap <> '.'
+    AND (instr(total_price_cap, '.') = 0 OR (
+      instr(total_price_cap, '.') > 1
+      AND length(total_price_cap) > instr(total_price_cap, '.')
+      AND length(total_price_cap) - instr(total_price_cap, '.') <= 2
+    ))
+    AND replace(replace(total_price_cap, '.', ''), '0', '') <> ''
+  ),
+  status TEXT NOT NULL CHECK (status IN ('ACTIVE', 'CLAIMED', 'FENCED', 'CONSUMED', 'EXPIRED', 'ABANDONED')),
+  created_by TEXT NOT NULL,
+  created_at TEXT NOT NULL,
+  expires_at TEXT NOT NULL,
+  UNIQUE (task_id, task_version),
+  UNIQUE (start_key, task_id),
+  UNIQUE (task_id, id)
+);
+
+CREATE TABLE purchase_attempts (
+  id TEXT PRIMARY KEY,
+  task_id TEXT NOT NULL,
+  authorization_id TEXT NOT NULL,
+  claim_generation INTEGER NOT NULL CHECK (claim_generation > 0 AND typeof(claim_generation) = 'integer'),
+  status TEXT NOT NULL CHECK (status IN ('CLAIMED', 'ORDERING', 'FAILED', 'FENCED', 'ABANDONED')),
+  gate1_unit_price TEXT CHECK (
+    gate1_unit_price IS NULL OR (
+      gate1_unit_price <> ''
+      AND gate1_unit_price NOT GLOB '*[^0-9.]*'
+      AND length(gate1_unit_price) - length(replace(gate1_unit_price, '.', '')) <= 1
+      AND gate1_unit_price <> '.'
+      AND (instr(gate1_unit_price, '.') = 0 OR (
+        instr(gate1_unit_price, '.') > 1
+        AND length(gate1_unit_price) > instr(gate1_unit_price, '.')
+        AND length(gate1_unit_price) - instr(gate1_unit_price, '.') <= 2
+      ))
+      AND replace(replace(gate1_unit_price, '.', ''), '0', '') <> ''
+    )
+  ),
+  gate2_unit_price TEXT CHECK (
+    gate2_unit_price IS NULL OR (
+      gate2_unit_price <> ''
+      AND gate2_unit_price NOT GLOB '*[^0-9.]*'
+      AND length(gate2_unit_price) - length(replace(gate2_unit_price, '.', '')) <= 1
+      AND gate2_unit_price <> '.'
+      AND (instr(gate2_unit_price, '.') = 0 OR (
+        instr(gate2_unit_price, '.') > 1
+        AND length(gate2_unit_price) > instr(gate2_unit_price, '.')
+        AND length(gate2_unit_price) - instr(gate2_unit_price, '.') <= 2
+      ))
+      AND replace(replace(gate2_unit_price, '.', ''), '0', '') <> ''
+    )
+  ),
+  quantity_read INTEGER CHECK (quantity_read IS NULL OR (quantity_read > 0 AND typeof(quantity_read) = 'integer')),
+  confirm_amount TEXT CHECK (
+    confirm_amount IS NULL OR (
+      confirm_amount <> ''
+      AND confirm_amount NOT GLOB '*[^0-9.]*'
+      AND length(confirm_amount) - length(replace(confirm_amount, '.', '')) <= 1
+      AND confirm_amount <> '.'
+      AND (instr(confirm_amount, '.') = 0 OR (
+        instr(confirm_amount, '.') > 1
+        AND length(confirm_amount) > instr(confirm_amount, '.')
+        AND length(confirm_amount) - instr(confirm_amount, '.') <= 2
+      ))
+      AND replace(replace(confirm_amount, '.', ''), '0', '') <> ''
+    )
+  ),
+  failure_code TEXT CHECK (failure_code IS NULL OR failure_code IN (
+    'AUTHORIZATION_EXPIRED', 'LEASE_LOST', 'GATE_1_REJECTED', 'QUANTITY_MISMATCH',
+    'GATE_2_REJECTED', 'GATE_3_REJECTED', 'FENCE_REJECTED', 'SAFE_ABORTED'
+  )),
+  started_at TEXT NOT NULL,
+  finished_at TEXT,
+  UNIQUE (task_id, claim_generation),
+  UNIQUE (task_id, id),
+  UNIQUE (task_id, authorization_id, id),
+  FOREIGN KEY (task_id, authorization_id) REFERENCES order_authorizations(task_id, id)
+);
+
+CREATE TABLE order_submissions (
+  id TEXT PRIMARY KEY,
+  task_id TEXT NOT NULL,
+  authorization_id TEXT NOT NULL,
+  attempt_id TEXT NOT NULL,
+  status TEXT NOT NULL CHECK (status IN ('FENCED', 'SUBMITTED', 'RECONCILIATION_REQUIRED', 'MANUAL_RESOLVED')),
+  gate1_unit_price TEXT NOT NULL CHECK (
+    gate1_unit_price <> ''
+    AND gate1_unit_price NOT GLOB '*[^0-9.]*'
+    AND length(gate1_unit_price) - length(replace(gate1_unit_price, '.', '')) <= 1
+    AND gate1_unit_price <> '.'
+    AND (instr(gate1_unit_price, '.') = 0 OR (
+      instr(gate1_unit_price, '.') > 1
+      AND length(gate1_unit_price) > instr(gate1_unit_price, '.')
+      AND length(gate1_unit_price) - instr(gate1_unit_price, '.') <= 2
+    ))
+    AND replace(replace(gate1_unit_price, '.', ''), '0', '') <> ''
+  ),
+  gate2_unit_price TEXT NOT NULL CHECK (
+    gate2_unit_price <> ''
+    AND gate2_unit_price NOT GLOB '*[^0-9.]*'
+    AND length(gate2_unit_price) - length(replace(gate2_unit_price, '.', '')) <= 1
+    AND gate2_unit_price <> '.'
+    AND (instr(gate2_unit_price, '.') = 0 OR (
+      instr(gate2_unit_price, '.') > 1
+      AND length(gate2_unit_price) > instr(gate2_unit_price, '.')
+      AND length(gate2_unit_price) - instr(gate2_unit_price, '.') <= 2
+    ))
+    AND replace(replace(gate2_unit_price, '.', ''), '0', '') <> ''
+  ),
+  quantity_read INTEGER NOT NULL CHECK (quantity_read > 0 AND typeof(quantity_read) = 'integer'),
+  confirm_amount TEXT NOT NULL CHECK (
+    confirm_amount <> ''
+    AND confirm_amount NOT GLOB '*[^0-9.]*'
+    AND length(confirm_amount) - length(replace(confirm_amount, '.', '')) <= 1
+    AND confirm_amount <> '.'
+    AND (instr(confirm_amount, '.') = 0 OR (
+      instr(confirm_amount, '.') > 1
+      AND length(confirm_amount) > instr(confirm_amount, '.')
+      AND length(confirm_amount) - instr(confirm_amount, '.') <= 2
+    ))
+    AND replace(replace(confirm_amount, '.', ''), '0', '') <> ''
+  ),
+  created_at TEXT NOT NULL,
+  resolved_at TEXT,
+  UNIQUE (authorization_id),
+  UNIQUE (attempt_id),
+  FOREIGN KEY (task_id, authorization_id, attempt_id) REFERENCES purchase_attempts(task_id, authorization_id, id)
+);
+
+-- +goose Down
+-- 只有尚未产生任何单趟授权或执行事实的纯 MANUAL/DRAFT 数据才能无损回到 v1。
+CREATE TABLE single_pass_downgrade_guard (
+  valid INTEGER NOT NULL CHECK (valid = 1)
+);
+
+INSERT INTO single_pass_downgrade_guard (valid)
+SELECT CASE WHEN
+  (SELECT COUNT(*) FROM order_authorizations) = 0
+  AND (SELECT COUNT(*) FROM purchase_attempts) = 0
+  AND (SELECT COUNT(*) FROM order_submissions) = 0
+  AND (SELECT COUNT(*) FROM tasks WHERE source <> 'MANUAL' OR status <> 'DRAFT') = 0
+THEN 1 ELSE 0 END;
+
+DROP TABLE single_pass_downgrade_guard;
+
+ALTER TABLE tasks RENAME TO tasks_v2;
+DROP TABLE order_submissions;
+DROP TABLE purchase_attempts;
+DROP TABLE order_authorizations;
+
+CREATE TABLE tasks (
+  id TEXT PRIMARY KEY,
+  source TEXT NOT NULL CHECK (source IN ('MANUAL', 'EXCEL', 'ERP')),
+  source_ref TEXT,
+  title TEXT NOT NULL,
+  goods_id TEXT NOT NULL,
+  sku_color TEXT NOT NULL,
+  sku_size TEXT NOT NULL,
+  quantity INTEGER NOT NULL CHECK (quantity > 0 AND typeof(quantity) = 'integer'),
+  max_total_price TEXT NOT NULL CHECK (
+    max_total_price <> ''
+    AND max_total_price NOT GLOB '*[^0-9.]*'
+    AND length(max_total_price) - length(replace(max_total_price, '.', '')) <= 1
+    AND max_total_price <> '.'
+    AND (instr(max_total_price, '.') = 0 OR (
+      instr(max_total_price, '.') > 1
+      AND length(max_total_price) > instr(max_total_price, '.')
+      AND length(max_total_price) - instr(max_total_price, '.') <= 2
+    ))
+  ),
+  reference_asset_id TEXT,
+  status TEXT NOT NULL CHECK (status IN (
+    'DRAFT', 'PENDING', 'CLAIMED', 'RUNNING', 'WAITING_CONFIRMATION',
+    'PENDING_RETRIAL', 'AUTHORIZED', 'ORDERING', 'WAITING_PAYMENT',
+    'RECONCILIATION_REQUIRED', 'NEEDS_MANUAL', 'SUCCEEDED', 'CANCELED'
+  )),
+  version INTEGER NOT NULL DEFAULT 1 CHECK (version > 0 AND typeof(version) = 'integer'),
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL
+);
+
+INSERT INTO tasks (
+  id, source, source_ref, title, goods_id, sku_color, sku_size, quantity, max_total_price,
+  reference_asset_id, status, version, created_at, updated_at
+)
+SELECT
+  id, source, source_ref, title, goods_id, sku_color, sku_size, quantity, max_total_price,
+  reference_asset_id, status, version, created_at, updated_at
+FROM tasks_v2;
+
+DROP TABLE tasks_v2;
+
+CREATE TABLE spec_trials (
+  id TEXT PRIMARY KEY,
+  task_id TEXT NOT NULL REFERENCES tasks(id),
+  attempt INTEGER NOT NULL CHECK (attempt > 0 AND typeof(attempt) = 'integer'),
+  product_title TEXT NOT NULL,
+  selected_color TEXT NOT NULL,
+  selected_size TEXT NOT NULL,
+  unit_price TEXT NOT NULL CHECK (unit_price <> '' AND unit_price NOT GLOB '*[^0-9.]*' AND length(unit_price) - length(replace(unit_price, '.', '')) <= 1 AND unit_price <> '.' AND (instr(unit_price, '.') = 0 OR (instr(unit_price, '.') > 1 AND length(unit_price) > instr(unit_price, '.') AND length(unit_price) - instr(unit_price, '.') <= 2))),
+  total_price TEXT NOT NULL CHECK (total_price <> '' AND total_price NOT GLOB '*[^0-9.]*' AND length(total_price) - length(replace(total_price, '.', '')) <= 1 AND total_price <> '.' AND (instr(total_price, '.') = 0 OR (instr(total_price, '.') > 1 AND length(total_price) > instr(total_price, '.') AND length(total_price) - instr(total_price, '.') <= 2))),
+  evidence_sha256 TEXT NOT NULL,
+  created_at TEXT NOT NULL,
+  UNIQUE (task_id, attempt),
+  UNIQUE (task_id, id)
+);
+
+CREATE TABLE order_authorizations (
+  id TEXT PRIMARY KEY,
+  task_id TEXT NOT NULL REFERENCES tasks(id),
+  spec_trial_id TEXT NOT NULL REFERENCES spec_trials(id),
+  version INTEGER NOT NULL CHECK (version > 0 AND typeof(version) = 'integer'),
+  goods_id TEXT NOT NULL,
+  sku_color TEXT NOT NULL,
+  sku_size TEXT NOT NULL,
+  quantity INTEGER NOT NULL CHECK (quantity > 0 AND typeof(quantity) = 'integer'),
+  authorized_unit_price TEXT NOT NULL CHECK (authorized_unit_price <> '' AND authorized_unit_price NOT GLOB '*[^0-9.]*' AND length(authorized_unit_price) - length(replace(authorized_unit_price, '.', '')) <= 1 AND authorized_unit_price <> '.' AND (instr(authorized_unit_price, '.') = 0 OR (instr(authorized_unit_price, '.') > 1 AND length(authorized_unit_price) > instr(authorized_unit_price, '.') AND length(authorized_unit_price) - instr(authorized_unit_price, '.') <= 2))),
+  total_price_cap TEXT NOT NULL CHECK (total_price_cap <> '' AND total_price_cap NOT GLOB '*[^0-9.]*' AND length(total_price_cap) - length(replace(total_price_cap, '.', '')) <= 1 AND total_price_cap <> '.' AND (instr(total_price_cap, '.') = 0 OR (instr(total_price_cap, '.') > 1 AND length(total_price_cap) > instr(total_price_cap, '.') AND length(total_price_cap) - instr(total_price_cap, '.') <= 2))),
+  note TEXT,
+  status TEXT NOT NULL CHECK (status IN ('PENDING_DELIVERY', 'DELIVERED', 'ACKNOWLEDGED', 'EXECUTING', 'FENCED', 'CONSUMED', 'SUPERSEDED', 'EXPIRED')),
+  created_by TEXT NOT NULL,
+  created_at TEXT NOT NULL,
+  expires_at TEXT NOT NULL,
+  UNIQUE (task_id, version),
+  UNIQUE (task_id, id),
+  FOREIGN KEY (task_id, spec_trial_id) REFERENCES spec_trials(task_id, id)
+);
+
+CREATE TABLE order_submissions (
+  id TEXT PRIMARY KEY,
+  task_id TEXT NOT NULL REFERENCES tasks(id),
+  authorization_id TEXT NOT NULL REFERENCES order_authorizations(id),
+  command_id TEXT NOT NULL,
+  dry_run_id TEXT NOT NULL,
+  status TEXT NOT NULL CHECK (status IN ('FENCED', 'SUBMITTED', 'RECONCILIATION_REQUIRED', 'MANUAL_RESOLVED')),
+  verified_unit_price TEXT NOT NULL CHECK (verified_unit_price <> '' AND verified_unit_price NOT GLOB '*[^0-9.]*' AND length(verified_unit_price) - length(replace(verified_unit_price, '.', '')) <= 1 AND verified_unit_price <> '.' AND (instr(verified_unit_price, '.') = 0 OR (instr(verified_unit_price, '.') > 1 AND length(verified_unit_price) > instr(verified_unit_price, '.') AND length(verified_unit_price) - instr(verified_unit_price, '.') <= 2))),
+  quantity_read INTEGER NOT NULL CHECK (quantity_read > 0 AND typeof(quantity_read) = 'integer'),
+  confirm_page_amount TEXT NOT NULL CHECK (confirm_page_amount <> '' AND confirm_page_amount NOT GLOB '*[^0-9.]*' AND length(confirm_page_amount) - length(replace(confirm_page_amount, '.', '')) <= 1 AND confirm_page_amount <> '.' AND (instr(confirm_page_amount, '.') = 0 OR (instr(confirm_page_amount, '.') > 1 AND length(confirm_page_amount) > instr(confirm_page_amount, '.') AND length(confirm_page_amount) - instr(confirm_page_amount, '.') <= 2))),
+  created_at TEXT NOT NULL,
+  resolved_at TEXT,
+  UNIQUE (authorization_id),
+  UNIQUE (command_id),
+  FOREIGN KEY (task_id, authorization_id) REFERENCES order_authorizations(task_id, id)
+);

admin/migrations/00003_evidence_assets.sql

@@ -0,0 +1,53 @@
+-- +goose Up
+CREATE TABLE evidence_assets (
+  id TEXT PRIMARY KEY,
+  upload_key TEXT NOT NULL,
+  task_id TEXT NOT NULL,
+  attempt_id TEXT NOT NULL,
+  kind TEXT NOT NULL CHECK (kind = 'SKU_PANEL_GATE_1'),
+  privacy_tier TEXT NOT NULL CHECK (privacy_tier = 'INTERNAL_RAW'),
+  sha256 TEXT NOT NULL CHECK (
+    length(sha256) = 64
+    AND sha256 NOT GLOB '*[^0-9a-f]*'
+  ),
+  byte_size INTEGER NOT NULL CHECK (
+    typeof(byte_size) = 'integer'
+    AND byte_size > 0
+    AND byte_size <= 10485760
+  ),
+  content_type TEXT NOT NULL CHECK (content_type = 'image/png'),
+  width_px INTEGER NOT NULL CHECK (
+    typeof(width_px) = 'integer'
+    AND width_px > 0
+    AND width_px <= 8192
+  ),
+  height_px INTEGER NOT NULL CHECK (
+    typeof(height_px) = 'integer'
+    AND height_px > 0
+    AND height_px <= 8192
+  ),
+  storage_key TEXT NOT NULL CHECK (
+    storage_key = substr(sha256, 1, 2) || '/' || sha256 || '.png'
+  ),
+  uploaded_by_device_id TEXT NOT NULL CHECK (trim(uploaded_by_device_id) <> ''),
+  captured_at TEXT NOT NULL CHECK (trim(captured_at) <> ''),
+  created_at TEXT NOT NULL CHECK (trim(created_at) <> ''),
+  CHECK (width_px * height_px <= 16777216),
+  UNIQUE (uploaded_by_device_id, upload_key),
+  FOREIGN KEY (task_id, attempt_id) REFERENCES purchase_attempts(task_id, id)
+);
+
+CREATE INDEX evidence_assets_task_time_idx
+ON evidence_assets (task_id, captured_at, created_at, id);
+
+-- +goose Down
+-- 已写入的内部原图是审计事实，回滚迁移不得静默删除它们。
+CREATE TABLE evidence_downgrade_guard (
+  valid INTEGER NOT NULL CHECK (valid = 1)
+);
+
+INSERT INTO evidence_downgrade_guard (valid)
+SELECT CASE WHEN (SELECT COUNT(*) FROM evidence_assets) = 0 THEN 1 ELSE 0 END;
+
+DROP TABLE evidence_downgrade_guard;
+DROP TABLE evidence_assets;

admin/migrations/00004_device_credentials.sql

@@ -0,0 +1,62 @@
+-- +goose Up
+CREATE TABLE device_credentials (
+  device_id TEXT PRIMARY KEY CHECK (
+    length(device_id) = 36
+    AND substr(device_id, 9, 1) = '-'
+    AND substr(device_id, 14, 1) = '-'
+    AND substr(device_id, 19, 1) = '-'
+    AND substr(device_id, 24, 1) = '-'
+    AND length(replace(device_id, '-', '')) = 32
+    AND replace(device_id, '-', '') NOT GLOB '*[^0-9a-f]*'
+    AND substr(device_id, 15, 1) = '4'
+    AND substr(device_id, 20, 1) IN ('8', '9', 'a', 'b')
+  ),
+  display_name TEXT NOT NULL CHECK (
+    display_name = trim(display_name)
+    AND length(display_name) BETWEEN 1 AND 128
+  ),
+  token_sha256 BLOB NOT NULL UNIQUE CHECK (
+    typeof(token_sha256) = 'blob'
+    AND length(token_sha256) = 32
+  ),
+  status TEXT NOT NULL CHECK (status IN ('ACTIVE', 'REVOKED')),
+  created_at TEXT NOT NULL CHECK (
+    created_at = trim(created_at)
+    AND length(created_at) >= 20
+    AND substr(created_at, 11, 1) = 'T'
+    AND substr(created_at, -1, 1) = 'Z'
+    AND julianday(created_at) IS NOT NULL
+  ),
+  revoked_at TEXT CHECK (
+    revoked_at IS NULL OR (
+      revoked_at = trim(revoked_at)
+      AND length(revoked_at) >= 20
+      AND substr(revoked_at, 11, 1) = 'T'
+      AND substr(revoked_at, -1, 1) = 'Z'
+      AND julianday(revoked_at) IS NOT NULL
+    )
+  ),
+  CHECK (
+    (status = 'ACTIVE' AND revoked_at IS NULL)
+    OR (
+      status = 'REVOKED'
+      AND revoked_at IS NOT NULL
+      AND julianday(revoked_at) >= julianday(created_at)
+    )
+  )
+);
+
+CREATE INDEX device_credentials_status_created_idx
+ON device_credentials (status, created_at, device_id);
+
+-- +goose Down
+-- 已签发凭据是安全配置；回滚不得静默删除并让设备身份审计链消失。
+CREATE TABLE device_credentials_downgrade_guard (
+  valid INTEGER NOT NULL CHECK (valid = 1)
+);
+
+INSERT INTO device_credentials_downgrade_guard (valid)
+SELECT CASE WHEN (SELECT COUNT(*) FROM device_credentials) = 0 THEN 1 ELSE 0 END;
+
+DROP TABLE device_credentials_downgrade_guard;
+DROP TABLE device_credentials;

client/.gitignore

@@ -0,0 +1,23 @@
+# 本机开发环境与解释器缓存
+.venv/
+venv/
+__pycache__/
+*.py[cod]
+.pytest_cache/
+.mypy_cache/
+
+# 运行时生成的日志、截图和其他证据产物不得进入版本库。
+logs/
+artifacts/
+runtime/
+*.log
+
+# 本机凭据或环境覆盖仅可保存在未跟踪文件中。
+.env
+.env.*
+secrets/
+
+# 打包工具生成的本机产物
+build/
+dist/
+*.egg-info/

client/pyproject.toml

@@ -0,0 +1,19 @@
+[build-system]
+requires = ["setuptools>=68"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "cmbuyer-client"
+version = "0.1.0"
+description = "cmbuyer 采购工具桌面端"
+requires-python = ">=3.11"
+dynamic = ["dependencies"]
+
+[project.scripts]
+cmbuyer-client = "cmbuyer_client.app:main"
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[tool.setuptools.dynamic]
+dependencies = { file = ["requirements.txt"] }

client/requirements.txt

@@ -0,0 +1,9 @@
+# -*- coding: utf-8 -*-
+# 桌面界面（Qt 官方 Python 绑定）。
+PySide6
+# T-101 基线取证使用；只连接显式 serial，不打开或操作拼多多页面。
+uiautomator2
+# T-101 直接使用当前 ADB server 的已列出设备对象交给 uiautomator2，禁止 WiFi 自动重连。
+adbutils>=2.11,<3
+# 后续截图完整性检查会使用。
+Pillow

client/scripts/capture_device_baseline.py

@@ -0,0 +1,76 @@
+"""采集指定 Android 设备的本地基线证据；不打开或操作拼多多页面。"""
+
+from __future__ import annotations
+
+import argparse
+from pathlib import Path
+import sys
+
+
+CLIENT_ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(CLIENT_ROOT / "src"))
+
+from cmbuyer_client.device.adb import AdbClient, DeviceConnectionError, SubprocessAdbRunner
+from cmbuyer_client.device.baseline import (
+    BaselineCaptureError,
+    DeviceBaselineCapturer,
+    NoReconnectUiautomatorConnector,
+)
+
+
+def parse_arguments(argv: list[str] | None = None) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description="采集显式指定 Android 设备的本地基线证据。")
+    parser.add_argument("--serial", required=True, help="ADB device serial；禁止自动选择。")
+    parser.add_argument("--output-dir", required=True, type=Path, help="新建的本地证据目录；不得覆盖已有目录。")
+    parser.add_argument("--timeout", type=float, default=10.0, help="ADB、uiautomator2 RPC 与 ADB socket 超时（秒）。")
+    parser.add_argument("--adb", default="adb", help="adb 可执行文件路径。")
+    return parser.parse_args(argv)
+
+
+def validate_arguments(arguments: argparse.Namespace) -> None:
+    """在导入设备库前拒绝危险或无效输入，便于离线测试。"""
+
+    if not arguments.serial.strip():
+        raise ValueError("必须显式提供非空 --serial。")
+    if arguments.timeout <= 0:
+        raise ValueError("--timeout 必须大于 0。")
+
+
+def main(argv: list[str] | None = None) -> int:
+    arguments = parse_arguments(argv)
+    try:
+        validate_arguments(arguments)
+    except ValueError as error:
+        print(f"失败：{error}", file=sys.stderr)
+        return 2
+
+    try:
+        import adbutils
+        import uiautomator2 as u2
+    except ImportError:
+        print("失败：缺少 uiautomator2；请在采购工具虚拟环境中运行。", file=sys.stderr)
+        return 2
+
+    client = AdbClient(SubprocessAdbRunner(arguments.adb), timeout_seconds=arguments.timeout)
+    connector = NoReconnectUiautomatorConnector(
+        adbutils.AdbClient(socket_timeout=arguments.timeout).device_list,
+        u2.connect,
+    )
+    capturer = DeviceBaselineCapturer(client, connector, timeout_seconds=arguments.timeout)
+    try:
+        result = capturer.capture(arguments.serial, arguments.output_dir)
+    except (DeviceConnectionError, BaselineCaptureError) as error:
+        # 错误类型只表达状态，不打印 ADB 输出、serial、XML 或页面正文。
+        print(f"基线取证失败：{error}", file=sys.stderr)
+        return 1
+    except OSError:
+        print("基线取证失败：无法创建或发布本地证据目录。", file=sys.stderr)
+        return 1
+
+    print(f"基线取证完成：{result.output_directory}")
+    print(f"manifest：{result.manifest_path}")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

client/scripts/capture_product_open.py

@@ -0,0 +1,75 @@
+"""打开已验证的拼多多商品直链并采集只读本地证据。"""
+
+from __future__ import annotations
+
+import argparse
+from pathlib import Path
+import sys
+
+
+CLIENT_ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(CLIENT_ROOT / "src"))
+
+from cmbuyer_client.device.adb import AdbClient, DeviceConnectionError, SubprocessAdbRunner
+from cmbuyer_client.device.baseline import NoReconnectUiautomatorConnector
+from cmbuyer_client.pdd.product_open import ProductOpenCapturer, ProductOpenError
+from cmbuyer_client.pdd.product_url import ProductUrlError, parse_product_url
+
+
+def parse_arguments(argv: list[str] | None = None) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description="打开 canonical 拼多多商品链接并采集只读证据。")
+    parser.add_argument("--serial", required=True, help="ADB device serial；禁止自动选择。")
+    parser.add_argument("--url", required=True, help="唯一允许的 goods.html?goods_id= 直链。")
+    parser.add_argument("--output-dir", required=True, type=Path, help="新建的本地证据目录；不得覆盖已有目录。")
+    parser.add_argument("--timeout", type=float, default=10.0, help="ADB 和只读 RPC 超时（秒）。")
+    parser.add_argument("--adb", default="adb", help="adb 可执行文件路径。")
+    return parser.parse_args(argv)
+
+
+def validate_arguments(arguments: argparse.Namespace) -> None:
+    if not arguments.serial.strip():
+        raise ValueError("必须显式提供非空 --serial。")
+    if arguments.timeout <= 0:
+        raise ValueError("--timeout 必须大于 0。")
+    parse_product_url(arguments.url)
+
+
+def main(argv: list[str] | None = None) -> int:
+    arguments = parse_arguments(argv)
+    try:
+        validate_arguments(arguments)
+        link = parse_product_url(arguments.url)
+    except (ValueError, ProductUrlError) as error:
+        print(f"失败：{error}", file=sys.stderr)
+        return 2
+
+    try:
+        import adbutils
+        import uiautomator2 as u2
+    except ImportError:
+        print("失败：缺少 uiautomator2；请在采购工具虚拟环境中运行。", file=sys.stderr)
+        return 2
+
+    client = AdbClient(SubprocessAdbRunner(arguments.adb), timeout_seconds=arguments.timeout)
+    connector = NoReconnectUiautomatorConnector(
+        adbutils.AdbClient(socket_timeout=arguments.timeout).device_list,
+        u2.connect,
+    )
+    capturer = ProductOpenCapturer(client, connector, timeout_seconds=arguments.timeout)
+    try:
+        result = capturer.open_and_capture(arguments.serial, link.canonical_url, arguments.output_dir)
+    except (DeviceConnectionError, ProductOpenError) as error:
+        # 不打印 ADB 输出、serial、Activity、XML 或页面正文。
+        print(f"商品打开取证失败：{error}", file=sys.stderr)
+        return 1
+    except OSError:
+        print("商品打开取证失败：无法创建或发布本地证据目录。", file=sys.stderr)
+        return 1
+
+    print(f"商品打开取证完成：{result.output_directory}")
+    print(f"manifest：{result.manifest_path}")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

client/scripts/capture_sku_panel_spike.py

@@ -0,0 +1,103 @@
+"""采集人工已停在规格面板的三种状态证据；不执行任何页面操作。"""
+
+from __future__ import annotations
+
+import argparse
+from math import isfinite
+from pathlib import Path
+import sys
+
+
+CLIENT_ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(CLIENT_ROOT / "src"))
+
+from cmbuyer_client.device.adb import AdbClient, DeviceConnectionError, SubprocessAdbRunner
+from cmbuyer_client.device.baseline import NoReconnectUiautomatorConnector
+from cmbuyer_client.pdd.product_url import ProductUrl, ProductUrlError, parse_product_url
+from cmbuyer_client.pdd.sku_panel_spike import (
+    HUMAN_DECLARED_STATES,
+    SkuPanelEvidenceCapturer,
+    SkuPanelEvidenceError,
+)
+
+
+def parse_arguments(argv: list[str] | None = None) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description="采集人工已打开的拼多多规格面板状态证据。")
+    parser.add_argument("--serial", required=True, help="ADB device serial；禁止自动选择。")
+    product_source = parser.add_mutually_exclusive_group(required=True)
+    product_source.add_argument("--url", help="唯一 canonical goods.html?goods_id= 直链。")
+    product_source.add_argument("--goods-id", help="纯数字商品标识；仅用于记录证据归属。")
+    parser.add_argument("--state", required=True, choices=sorted(HUMAN_DECLARED_STATES), help="人工声明的面板状态。")
+    parser.add_argument("--output-dir", required=True, type=Path, help="新建的本地证据目录；不得覆盖已有目录。")
+    parser.add_argument("--timeout", type=float, default=10.0, help="ADB 和只读 RPC 超时（秒）。")
+    parser.add_argument("--adb", default="adb", help="adb 可执行文件路径。")
+    return parser.parse_args(argv)
+
+
+def resolve_product_url(arguments: argparse.Namespace) -> ProductUrl:
+    if isinstance(arguments.url, str):
+        return parse_product_url(arguments.url)
+    if isinstance(arguments.goods_id, str):
+        # 仅使用严格 parser 重新验证并构建，不把输入交给 ADB 或页面。
+        return parse_product_url(f"https://mobile.yangkeduo.com/goods.html?goods_id={arguments.goods_id}")
+    raise ValueError("必须提供 --url 或 --goods-id。")
+
+
+def validate_arguments(arguments: argparse.Namespace) -> ProductUrl:
+    if not isinstance(arguments.serial, str) or not arguments.serial.strip():
+        raise ValueError("必须显式提供非空 --serial。")
+    if (
+        not isinstance(arguments.timeout, (int, float))
+        or isinstance(arguments.timeout, bool)
+        or arguments.timeout <= 0
+        or not isfinite(arguments.timeout)
+    ):
+        raise ValueError("--timeout 必须是大于 0 的有限数值。")
+    if arguments.state not in HUMAN_DECLARED_STATES:
+        raise ValueError("--state 必须是允许的人工声明状态。")
+    return resolve_product_url(arguments)
+
+
+def main(argv: list[str] | None = None) -> int:
+    arguments = parse_arguments(argv)
+    try:
+        link = validate_arguments(arguments)
+    except (ValueError, ProductUrlError) as error:
+        print(f"失败：{error}", file=sys.stderr)
+        return 2
+
+    try:
+        import adbutils
+        import uiautomator2 as u2
+    except ImportError:
+        print("失败：缺少 uiautomator2；请在采购工具虚拟环境中运行。", file=sys.stderr)
+        return 2
+
+    client = AdbClient(SubprocessAdbRunner(arguments.adb), timeout_seconds=arguments.timeout)
+    connector = NoReconnectUiautomatorConnector(
+        adbutils.AdbClient(socket_timeout=arguments.timeout).device_list,
+        u2.connect,
+    )
+    capturer = SkuPanelEvidenceCapturer(client, connector, timeout_seconds=arguments.timeout)
+    try:
+        result = capturer.capture(
+            arguments.serial,
+            link.canonical_url,
+            arguments.state,
+            arguments.output_dir,
+        )
+    except (DeviceConnectionError, SkuPanelEvidenceError) as error:
+        # 不打印 ADB 输出、serial、Activity、XML 或页面正文。
+        print(f"规格面板证据采集失败：{error}", file=sys.stderr)
+        return 1
+    except OSError:
+        print("规格面板证据采集失败：无法创建或发布本地证据目录。", file=sys.stderr)
+        return 1
+
+    print(f"规格面板证据采集完成：{result.output_directory}")
+    print(f"manifest：{result.manifest_path}")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

client/scripts/run_t103_sku_selection.py

@@ -0,0 +1,84 @@
+"""恢复 T-103 已取证目标规格、验证现价并保存本地原始截图。"""
+
+from __future__ import annotations
+
+import argparse
+from math import isfinite
+from pathlib import Path
+import sys
+
+
+CLIENT_ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(CLIENT_ROOT / "src"))
+
+from cmbuyer_client.device.adb import AdbClient, DeviceConnectionError, SubprocessAdbRunner
+from cmbuyer_client.device.baseline import NoReconnectUiautomatorConnector
+from cmbuyer_client.pdd.product_url import ProductUrlError, parse_product_url
+from cmbuyer_client.pdd.sku_selection import EXPECTED_GOODS_ID, SkuSelectionError, TASK_TO_UI_SELECTION
+from cmbuyer_client.pdd.sku_selection_runner import SkuSelectionRunError, SkuSelectionRunner
+
+
+def parse_arguments(argv: list[str] | None = None) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description="恢复 T-103 已取证规格并保存本地原始截图。")
+    parser.add_argument("--serial", required=True, help="ADB device serial；禁止自动选择。")
+    parser.add_argument("--url", required=True, help="唯一 canonical goods.html?goods_id= 直链。")
+    parser.add_argument("--color", required=True, help="T-103 任务颜色值。")
+    parser.add_argument("--size", required=True, help="T-103 任务尺码值。")
+    parser.add_argument("--output-dir", required=True, type=Path, help="新建本地目录；不得覆盖已有目录。")
+    parser.add_argument("--timeout", type=float, default=10.0, help="ADB 与设备 RPC 超时（秒）。")
+    parser.add_argument("--adb", default="adb", help="adb 可执行文件路径。")
+    return parser.parse_args(argv)
+
+
+def validate_arguments(arguments: argparse.Namespace) -> None:
+    if not isinstance(arguments.serial, str) or not arguments.serial.strip():
+        raise ValueError("必须显式提供非空 --serial。")
+    if not isinstance(arguments.timeout, (int, float)) or isinstance(arguments.timeout, bool) or arguments.timeout <= 0 or not isfinite(arguments.timeout):
+        raise ValueError("--timeout 必须是大于 0 的有限数值。")
+    link = parse_product_url(arguments.url)
+    if link.goods_id != EXPECTED_GOODS_ID:
+        raise ValueError("--url 不是 T-103 已取证商品。")
+    if (arguments.color, arguments.size) not in TASK_TO_UI_SELECTION:
+        raise ValueError("--color 与 --size 必须是 T-103 已取证任务值。")
+
+
+def main(argv: list[str] | None = None) -> int:
+    arguments = parse_arguments(argv)
+    try:
+        validate_arguments(arguments)
+    except (ValueError, ProductUrlError) as error:
+        print(f"失败：{error}", file=sys.stderr)
+        return 2
+
+    try:
+        import adbutils
+        import uiautomator2 as u2
+    except ImportError:
+        print("失败：缺少 uiautomator2；请在采购工具虚拟环境中运行。", file=sys.stderr)
+        return 2
+
+    runner = SkuSelectionRunner(
+        AdbClient(SubprocessAdbRunner(arguments.adb), timeout_seconds=arguments.timeout),
+        NoReconnectUiautomatorConnector(adbutils.AdbClient(socket_timeout=arguments.timeout).device_list, u2.connect),
+        timeout_seconds=arguments.timeout,
+    )
+    try:
+        result = runner.run(arguments.serial, arguments.url, arguments.color, arguments.size, arguments.output_dir)
+    except (DeviceConnectionError, SkuSelectionRunError, SkuSelectionError) as error:
+        # Flow 可能来自测试替身或未来实现；CLI 不回显任何异常正文，避免泄露节点树或页面文本。
+        print("规格恢复失败：已停止，未发布本地证据目录。", file=sys.stderr)
+        return 1
+    except OSError:
+        print("规格恢复失败：无法创建或发布本地证据目录。", file=sys.stderr)
+        return 1
+
+    print(f"规格恢复完成：{result.output_directory}")
+    print(f"manifest：{result.manifest_path}")
+    print(f"目标规格：{arguments.color} / {arguments.size}")
+    print(f"确认单价：{result.unit_price}")
+    print("页面对应性：请人工核对本地原始截图。")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

client/scripts/sanitize_sku_panel_evidence.py

@@ -0,0 +1,41 @@
+"""本机脱敏 T-103 raw 证据到同级 derived；不连接设备或解析页面语义。"""
+
+from __future__ import annotations
+
+import argparse
+from pathlib import Path
+import sys
+
+
+CLIENT_ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(CLIENT_ROOT / "src"))
+
+from cmbuyer_client.device.sku_evidence_sanitizer import (
+    SkuEvidenceSanitizationError,
+    sanitize_sku_panel_evidence,
+)
+
+
+def parse_arguments(argv: list[str] | None = None) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description="将本机 raw 规格面板证据确定性脱敏到同级 derived。")
+    parser.add_argument("--raw-dir", required=True, type=Path, help="仅允许名为 raw 的本机原始证据目录。")
+    parser.add_argument("--output-dir", required=True, type=Path, help="仅允许 raw 同级且名为 derived 的新目录。")
+    return parser.parse_args(argv)
+
+
+def main(argv: list[str] | None = None) -> int:
+    arguments = parse_arguments(argv)
+    try:
+        result = sanitize_sku_panel_evidence(arguments.raw_dir, arguments.output_dir)
+    except SkuEvidenceSanitizationError as error:
+        # 错误不回显 raw 路径、manifest/XML、地址、手机号或 serial。
+        print(f"证据脱敏失败：{error}", file=sys.stderr)
+        return 1
+
+    print(f"派生证据脱敏完成：{result.output_directory}")
+    print(f"manifest：{result.manifest_path}")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

client/scripts/verify_wheel_metadata.py

@@ -0,0 +1,80 @@
+"""验证 wheel 元数据从 requirements.txt 声明了全部运行时依赖。"""
+
+from __future__ import annotations
+
+import argparse
+from email import policy
+from email.parser import BytesParser
+from pathlib import Path
+import re
+import sys
+import zipfile
+
+
+def normalize_project_name(name: str) -> str:
+    """使用足以比较 requirements 与 Core Metadata 的项目名规范化规则。"""
+
+    return re.sub(r"[-_.]+", "-", name).lower()
+
+
+def dependencies_from_requirements(requirements_file: Path) -> set[str]:
+    """从唯一依赖来源读取项目名；当前 requirements 不允许间接或可编辑依赖。"""
+
+    dependencies: set[str] = set()
+    for line in requirements_file.read_text(encoding="utf-8").splitlines():
+        requirement = line.partition("#")[0].strip()
+        if not requirement:
+            continue
+        match = re.match(r"[A-Za-z0-9][A-Za-z0-9._-]*", requirement)
+        if match is None:
+            raise ValueError(f"requirements.txt 包含不支持的依赖声明：{requirement}")
+        dependencies.add(normalize_project_name(match.group()))
+    return dependencies
+
+
+def dependencies_from_wheel(wheel_file: Path) -> set[str]:
+    """读取 wheel 的 Core Metadata 中声明的 Requires-Dist 项目名。"""
+
+    with zipfile.ZipFile(wheel_file) as wheel:
+        metadata_members = [name for name in wheel.namelist() if name.endswith(".dist-info/METADATA")]
+        if len(metadata_members) != 1:
+            raise ValueError("wheel 中必须恰有一个 .dist-info/METADATA 文件")
+        metadata = BytesParser(policy=policy.default).parsebytes(wheel.read(metadata_members[0]))
+
+    dependencies = set()
+    for requirement in metadata.get_all("Requires-Dist", []):
+        match = re.match(r"[A-Za-z0-9][A-Za-z0-9._-]*", requirement)
+        if match is None:
+            raise ValueError(f"wheel METADATA 包含无效的 Requires-Dist：{requirement}")
+        dependencies.add(normalize_project_name(match.group()))
+    return dependencies
+
+
+def verify_wheel_metadata(wheel_file: Path, requirements_file: Path) -> set[str]:
+    """返回没有被 wheel 元数据声明的 requirements 项目名。"""
+
+    return dependencies_from_requirements(requirements_file) - dependencies_from_wheel(wheel_file)
+
+
+def main(argv: list[str] | None = None) -> int:
+    parser = argparse.ArgumentParser(description="检查 wheel 是否包含 requirements.txt 的依赖元数据")
+    parser.add_argument("wheel", type=Path, help="待检查的 wheel 文件")
+    parser.add_argument(
+        "--requirements",
+        type=Path,
+        default=Path(__file__).resolve().parents[1] / "requirements.txt",
+        help="唯一依赖来源 requirements.txt 的路径",
+    )
+    arguments = parser.parse_args(argv)
+
+    missing = verify_wheel_metadata(arguments.wheel, arguments.requirements)
+    if missing:
+        print(f"wheel METADATA 缺少依赖：{', '.join(sorted(missing))}", file=sys.stderr)
+        return 1
+
+    print("wheel METADATA 已声明 requirements.txt 中的全部依赖。")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

client/src/cmbuyer_client/__init__.py

@@ -0,0 +1,6 @@
+"""采购工具桌面端包。
+
+本包当前只提供应用骨架和安全的本地运行基础设施；不包含真机操作或采购流程。
+"""
+
+__version__ = "0.1.0"

client/src/cmbuyer_client/__main__.py

@@ -0,0 +1,7 @@
+"""支持通过 ``python -m cmbuyer_client`` 启动应用。"""
+
+from .app import main
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

client/src/cmbuyer_client/app.py

@@ -0,0 +1,57 @@
+"""采购工具的最小桌面应用入口。"""
+
+from __future__ import annotations
+
+import sys
+from collections.abc import Sequence
+
+from .logging_policy import configure_application_logger
+from .runtime import RuntimePaths
+
+
+def select_application_argv(argv: Sequence[str] | None) -> list[str]:
+    """保留调用方明确给出的空参数列表，避免改变测试或打包入口的语义。"""
+
+    return list(sys.argv if argv is None else argv)
+
+
+def main(argv: Sequence[str] | None = None) -> int:
+    """启动只表达当前工程状态的桌面外壳。
+
+    真机控制和采购执行必须在完成取证并实现后才可接入，因此此入口不导入
+    uiautomator2，也不提供任何会影响采购或支付状态的命令。
+    """
+
+    try:
+        paths = RuntimePaths.default()
+        logger = configure_application_logger(paths)
+    except OSError as error:
+        print(f"无法创建采购工具运行目录：{error}", file=sys.stderr)
+        return 1
+
+    try:
+        from PySide6.QtCore import Qt
+        from PySide6.QtWidgets import QApplication, QLabel, QMainWindow
+    except ImportError:
+        logger.error("缺少 PySide6，无法启动桌面界面。")
+        print("无法启动采购工具：缺少 PySide6。请先安装 requirements.txt 中的依赖。", file=sys.stderr)
+        return 2
+
+    application = QApplication.instance() or QApplication(select_application_argv(argv))
+    application.setApplicationName("采购工具")
+
+    window = QMainWindow()
+    window.setWindowTitle("采购工具")
+    window.setAccessibleName("采购工具")
+    window.setMinimumSize(420, 240)
+    window.resize(560, 320)
+
+    message = QLabel("应用骨架已初始化。\n采购执行功能尚未启用。")
+    message.setAlignment(Qt.AlignmentFlag.AlignCenter)
+    message.setWordWrap(True)
+    message.setAccessibleName("当前状态")
+    window.setCentralWidget(message)
+
+    logger.info("应用已启动；采购执行功能尚未启用。")
+    window.show()
+    return application.exec()

client/src/cmbuyer_client/device/__init__.py

@@ -0,0 +1,15 @@
+"""设备连接与基线取证边界。
+
+本包只提供显式设备选择、非敏感身份核验和本地基线采集；不包含任何采购页面或订单操作。
+"""
+
+from .adb import AdbClient, AdbDevice, CommandResult
+from .baseline import BaselineCaptureResult, DeviceBaselineCapturer
+
+__all__ = [
+    "AdbClient",
+    "AdbDevice",
+    "BaselineCaptureResult",
+    "CommandResult",
+    "DeviceBaselineCapturer",
+]

client/src/cmbuyer_client/device/adb.py

@@ -0,0 +1,282 @@
+"""ADB 设备清单与物理设备冲突的 fail-closed 边界。"""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from pathlib import Path
+import subprocess
+from typing import Protocol, Sequence
+
+
+class DeviceConnectionError(RuntimeError):
+    """显式设备连接边界的基础错误，不携带命令输出或设备敏感内容。"""
+
+
+class SerialRequiredError(DeviceConnectionError):
+    """调用方没有明确指定设备 serial。"""
+
+
+class DeviceNotFoundError(DeviceConnectionError):
+    """指定 serial 不在 ADB 当前清单中。"""
+
+
+class DeviceOfflineError(DeviceConnectionError):
+    """指定设备处于 offline 状态。"""
+
+
+class DeviceUnauthorizedError(DeviceConnectionError):
+    """指定设备尚未授权此电脑。"""
+
+
+class DeviceStateError(DeviceConnectionError):
+    """指定设备处于其他不可用状态。"""
+
+
+class DeviceCommandTimeoutError(DeviceConnectionError):
+    """ADB 命令超过调用方指定的超时。"""
+
+
+class DeviceCommandError(DeviceConnectionError):
+    """ADB 命令失败；错误文本刻意不回显设备输出。"""
+
+
+class DeviceIdentityUnconfirmedError(DeviceConnectionError):
+    """多条在线通道无法完成同机身份判断，必须由人处理。"""
+
+
+class DuplicatePhysicalDeviceError(DeviceConnectionError):
+    """同一物理手机通过多个 ADB 通道同时在线。"""
+
+
+class IntentLaunchUnconfirmedError(DeviceConnectionError):
+    """`am start -W` 没有给出可确认的启动成功结果。"""
+
+
+@dataclass(frozen=True)
+class CommandResult:
+    """可注入命令执行器的最小、可离线构造结果。"""
+
+    stdout: str
+    stderr: str = ""
+    returncode: int = 0
+
+
+@dataclass(frozen=True)
+class IntentLaunchSummary:
+    """不含 Activity、页面内容或 ADB 输出的受限启动摘要。"""
+
+    status: str
+    returncode: int
+
+
+class CommandRunner(Protocol):
+    """运行 ADB 子命令的可替换边界。"""
+
+    def run(self, arguments: Sequence[str], timeout_seconds: float) -> CommandResult:
+        """运行参数，不得通过 shell 拼接。"""
+
+
+class SubprocessAdbRunner:
+    """使用 subprocess 的生产执行器，所有调用必须带超时。"""
+
+    def __init__(self, executable: str | Path = "adb") -> None:
+        self._executable = str(executable)
+
+    def run(self, arguments: Sequence[str], timeout_seconds: float) -> CommandResult:
+        try:
+            completed = subprocess.run(
+                [self._executable, *arguments],
+                check=False,
+                capture_output=True,
+                text=True,
+                encoding="utf-8",
+                errors="replace",
+                timeout=timeout_seconds,
+            )
+        except subprocess.TimeoutExpired as error:
+            raise DeviceCommandTimeoutError("ADB 命令超时，请检查设备连接后由人工重试。") from error
+        except OSError as error:
+            raise DeviceCommandError("无法启动 ADB，请检查 adb 路径与本机工具链。") from error
+
+        return CommandResult(
+            stdout=completed.stdout,
+            stderr=completed.stderr,
+            returncode=completed.returncode,
+        )
+
+
+@dataclass(frozen=True)
+class AdbDevice:
+    """`adb devices -l` 的单行非敏感传输元数据。"""
+
+    serial: str
+    state: str
+    product: str | None = None
+    model: str | None = None
+    device: str | None = None
+
+
+@dataclass(frozen=True)
+class DeviceInspection:
+    """选定通道的只读身份结果，原始硬件标识只在内存中参与比较。"""
+
+    device: AdbDevice
+    model: str
+    android_version: str
+
+
+def parse_adb_devices(output: str) -> list[AdbDevice]:
+    """解析 `adb devices -l`，忽略标题、空行和 adb 附加提示。"""
+
+    devices: list[AdbDevice] = []
+    for raw_line in output.splitlines():
+        line = raw_line.strip()
+        if not line or line.startswith("List of devices attached") or line.startswith("*"):
+            continue
+        fields = line.split()
+        if len(fields) < 2:
+            continue
+        details = {
+            key: value
+            for field in fields[2:]
+            if ":" in field
+            for key, value in [field.split(":", 1)]
+        }
+        devices.append(
+            AdbDevice(
+                serial=fields[0],
+                state=fields[1],
+                product=details.get("product"),
+                model=details.get("model"),
+                device=details.get("device"),
+            )
+        )
+    return devices
+
+
+class AdbClient:
+    """显式 serial 的 ADB 只读查询。
+
+    多个在线通道必须完成硬件身份比对。比对失败时不能用相同 model/product 猜测同一台手机，
+    因为那会把不确定性隐藏成错误的安全结论。
+    """
+
+    def __init__(self, runner: CommandRunner, timeout_seconds: float = 10.0) -> None:
+        if timeout_seconds <= 0:
+            raise ValueError("timeout_seconds 必须大于 0")
+        self._runner = runner
+        self._timeout_seconds = timeout_seconds
+
+    def inspect(self, serial: str) -> DeviceInspection:
+        """确认指定通道在线且不与另一在线通道指向同一物理设备。"""
+
+        selected_serial = _require_serial(serial)
+        devices = self.devices()
+        selected = next((device for device in devices if device.serial == selected_serial), None)
+        if selected is None:
+            raise DeviceNotFoundError("指定设备不在 ADB 清单中，请显式检查 serial。")
+        _raise_for_state(selected.state)
+
+        online_devices = [device for device in devices if device.state == "device"]
+        if len(online_devices) > 1:
+            identities: dict[str, frozenset[str]] = {}
+            for candidate in online_devices:
+                try:
+                    identities[candidate.serial] = self._physical_identity(candidate)
+                except DeviceConnectionError as error:
+                    raise DeviceIdentityUnconfirmedError(
+                        "存在多个在线 ADB 通道且身份无法确认，已拒绝选择设备。"
+                    ) from error
+
+            selected_identity = identities[selected.serial]
+            if any(
+                candidate_serial != selected.serial and selected_identity.intersection(candidate_identity)
+                for candidate_serial, candidate_identity in identities.items()
+            ):
+                raise DuplicatePhysicalDeviceError(
+                    "同一物理手机的多个 ADB 通道同时在线，已拒绝继续；请仅保留一个通道。"
+                )
+
+        model = self._getprop(selected.serial, "ro.product.model") or selected.model or "unknown"
+        android_version = self._getprop(selected.serial, "ro.build.version.release") or "unknown"
+        return DeviceInspection(device=selected, model=model, android_version=android_version)
+
+    def devices(self) -> list[AdbDevice]:
+        """读取并解析 ADB 设备清单。"""
+
+        result = self._run_checked(("devices", "-l"))
+        return parse_adb_devices(result.stdout)
+
+    def start_pdd_view_intent(self, serial: str, goods_id: str) -> IntentLaunchSummary:
+        """以参数数组启动唯一允许的拼多多 ACTION_VIEW Intent。
+
+        这里刻意不提供任意 shell 或任意 package 的执行接口。调用方必须先完成
+        ``inspect`` 和应用版本核验；本方法在本层从纯数字 ``goods_id`` 重建 URL，调用方不能
+        把另一个 URL 直接交给 ADB。本方法既不点击控件，也不解析 Activity 或页面文本。
+        """
+
+        selected_serial = _require_serial(serial)
+        if (
+            not isinstance(goods_id, str)
+            or not goods_id
+            or any(character < "0" or character > "9" for character in goods_id)
+        ):
+            raise ValueError("goods_id 必须是纯数字")
+        canonical_url = f"https://mobile.yangkeduo.com/goods.html?goods_id={goods_id}"
+        result = self._run_checked(
+            (
+                "-s",
+                selected_serial,
+                "shell",
+                "am",
+                "start",
+                "-W",
+                "-a",
+                "android.intent.action.VIEW",
+                "-d",
+                canonical_url,
+                "-p",
+                "com.xunmeng.pinduoduo",
+            )
+        )
+        if not any(line.strip() == "Status: ok" for line in result.stdout.splitlines()):
+            raise IntentLaunchUnconfirmedError("商品链接启动结果无法确认，已停止后续取证。")
+        return IntentLaunchSummary(status="ok", returncode=result.returncode)
+
+    def _physical_identity(self, device: AdbDevice) -> frozenset[str]:
+        serialno = self._getprop(device.serial, "ro.serialno")
+        boot_serialno = self._getprop(device.serial, "ro.boot.serialno")
+        identifiers = frozenset(value for value in (serialno, boot_serialno) if value)
+        if identifiers:
+            return identifiers
+        # model/product/device 只能作为展示元数据，不能证明两台同型号设备是同一物理机。
+        raise DeviceIdentityUnconfirmedError("无法读取设备硬件身份摘要。")
+
+    def _getprop(self, serial: str, property_name: str) -> str:
+        result = self._run_checked(("-s", serial, "shell", "getprop", property_name))
+        return result.stdout.strip()
+
+    def _run_checked(self, arguments: Sequence[str]) -> CommandResult:
+        try:
+            result = self._runner.run(arguments, self._timeout_seconds)
+        except subprocess.TimeoutExpired as error:
+            raise DeviceCommandTimeoutError("ADB 命令超时，请检查设备连接后由人工重试。") from error
+        if result.returncode != 0:
+            raise DeviceCommandError("ADB 命令失败，请检查设备连接或授权状态。")
+        return result
+
+
+def _require_serial(serial: str) -> str:
+    if not isinstance(serial, str) or not serial.strip():
+        raise SerialRequiredError("必须显式提供设备 serial，禁止自动选择设备。")
+    return serial.strip()
+
+
+def _raise_for_state(state: str) -> None:
+    if state == "device":
+        return
+    if state == "offline":
+        raise DeviceOfflineError("指定设备处于 offline 状态。")
+    if state == "unauthorized":
+        raise DeviceUnauthorizedError("指定设备尚未授权此电脑。")
+    raise DeviceStateError("指定设备不处于可用状态。")

client/src/cmbuyer_client/device/baseline.py

@@ -0,0 +1,238 @@
+"""只读设备基线取证，严格限制在元数据、截图和完整节点树。"""
+
+from __future__ import annotations
+
+from collections.abc import Callable
+from dataclasses import dataclass
+from datetime import UTC, datetime
+from hashlib import sha256
+import base64
+import binascii
+from io import BytesIO
+import json
+import os
+from pathlib import Path
+import shutil
+from typing import Any, Protocol
+from uuid import uuid4
+from xml.etree import ElementTree
+
+from adbutils.errors import AdbTimeout
+from PIL import Image, UnidentifiedImageError
+from uiautomator2.exceptions import HTTPTimeoutError
+
+from .adb import AdbClient, DeviceInspection
+
+
+PDD_PACKAGE = "com.xunmeng.pinduoduo"
+SCREENSHOT_PARAMS = [1, 80]
+HIERARCHY_PARAMS = [False, 50]
+_BASE64_ASCII_WHITESPACE = " \t\r\n"
+
+
+class BaselineCaptureError(RuntimeError):
+    """基线取证无法完整落盘时的失败，不会伪造成功产物。"""
+
+
+class BaselineCaptureTimeoutError(BaselineCaptureError):
+    """设备基线取证超时；底层异常文本不向 CLI 或日志泄露。"""
+
+
+class UiAutomatorDevice(Protocol):
+    """本任务唯一需要的 uiautomator2 只读能力。"""
+
+    def app_info(self, package_name: str) -> dict[str, Any]:
+        """读取已安装应用元数据。"""
+
+    def jsonrpc_call(self, method: str, params: Any = None, timeout: float = 10) -> Any:
+        """调用公开 uiautomator2 JSON-RPC 接口。"""
+
+
+class NoReconnectUiautomatorConnector:
+    """只把当前 ADB server 已列出的设备对象交给 uiautomator2。
+
+    uiautomator2 直接接收 IP serial 时会在内部尝试 adb disconnect/connect。这里先从已列出设备中
+    取对象再调用 ``u2.connect(device_object)``，避免连接阶段隐式重连已经掉线的 WiFi 通道。
+    """
+
+    def __init__(self, list_devices: Callable[[], list[Any]], connect: Callable[[Any], UiAutomatorDevice]) -> None:
+        self._list_devices = list_devices
+        self._connect = connect
+
+    def __call__(self, serial: str) -> UiAutomatorDevice:
+        device = next((item for item in self._list_devices() if item.serial == serial), None)
+        if device is None:
+            raise BaselineCaptureError("设备在连接前已从 ADB 清单消失，已拒绝自动重连。")
+        return self._connect(device)
+
+
+@dataclass(frozen=True)
+class BaselineCaptureResult:
+    """已原子发布的基线取证摘要，不包含页面正文或原始 serial。"""
+
+    output_directory: Path
+    manifest_path: Path
+    screenshot_path: Path
+    hierarchy_path: Path
+
+
+class DeviceBaselineCapturer:
+    """以先校验通道、后连接、最后原子发布的顺序采集基线。
+
+    截图和 XML 可能包含页面敏感内容，因此仅落在调用方明确指定的本地目录；manifest 只写
+    哈希、设备非敏感元数据和脱敏后的 serial 摘要，绝不嵌入 XML 或页面文本。
+    """
+
+    def __init__(
+        self,
+        adb_client: AdbClient,
+        connector: Callable[[str], UiAutomatorDevice],
+        timeout_seconds: float,
+    ) -> None:
+        if timeout_seconds <= 0:
+            raise ValueError("timeout_seconds 必须大于 0")
+        self._adb_client = adb_client
+        self._connector = connector
+        self._timeout_seconds = timeout_seconds
+
+    def capture(self, serial: str, output_directory: Path) -> BaselineCaptureResult:
+        """采集完整基线，任何一步失败均不发布 output_directory。"""
+
+        inspection = self._adb_client.inspect(serial)
+        target = Path(output_directory)
+        if target.exists():
+            raise BaselineCaptureError("输出目录已存在；为防止混入旧证据，拒绝覆盖。")
+        if not target.name:
+            raise BaselineCaptureError("输出目录必须是明确的新目录。")
+
+        target.parent.mkdir(parents=True, exist_ok=True)
+        staging = target.parent / f".{target.name}.staging-{uuid4().hex}"
+        staging.mkdir()
+        try:
+            device = self._connector(serial)
+            app_info = device.app_info(PDD_PACKAGE)
+            version = _extract_version(app_info)
+
+            screenshot_path = staging / "screenshot.png"
+            screenshot_base64 = device.jsonrpc_call(
+                "takeScreenshot",
+                SCREENSHOT_PARAMS,
+                timeout=self._timeout_seconds,
+            )
+            _save_base64_screenshot(screenshot_base64, screenshot_path)
+
+            hierarchy = device.jsonrpc_call(
+                "dumpWindowHierarchy",
+                HIERARCHY_PARAMS,
+                timeout=self._timeout_seconds,
+            )
+            _validate_hierarchy(hierarchy)
+            hierarchy_path = staging / "hierarchy.xml"
+            hierarchy_path.write_text(hierarchy, encoding="utf-8")
+
+            manifest_path = staging / "manifest.json"
+            manifest_path.write_text(
+                json.dumps(
+                    _manifest(inspection, serial, version, screenshot_path, hierarchy_path),
+                    ensure_ascii=False,
+                    indent=2,
+                    sort_keys=True,
+                )
+                + "\n",
+                encoding="utf-8",
+            )
+            os.replace(staging, target)
+        except BaselineCaptureError:
+            # 仅删除本次创建、名称带随机标识的暂存目录，绝不触碰调用方原有输出目录。
+            if staging.exists():
+                shutil.rmtree(staging)
+            raise
+        except (AdbTimeout, HTTPTimeoutError, TimeoutError) as error:
+            if staging.exists():
+                shutil.rmtree(staging)
+            raise BaselineCaptureTimeoutError("设备基线取证超时，未发布任何证据产物。") from error
+        except Exception as error:
+            if staging.exists():
+                shutil.rmtree(staging)
+            # uiautomator2/adbutils 可能把 serial、路径或远端响应放入异常文本，不能直接传播到 CLI。
+            raise BaselineCaptureError("设备基线取证未完成，未发布任何证据产物。") from error
+
+        return BaselineCaptureResult(
+            output_directory=target,
+            manifest_path=target / "manifest.json",
+            screenshot_path=target / "screenshot.png",
+            hierarchy_path=target / "hierarchy.xml",
+        )
+
+
+def _extract_version(app_info: dict[str, Any]) -> str:
+    version = app_info.get("versionName") or app_info.get("version_name")
+    if not isinstance(version, str) or not version.strip():
+        raise BaselineCaptureError("无法读取拼多多版本，拒绝发布不完整取证。")
+    return version.strip()
+
+
+def _save_base64_screenshot(value: Any, target: Path) -> None:
+    """规范化常见 ASCII Base64 空白后严格解码；没有 adb screenshot fallback。"""
+
+    if not isinstance(value, str) or not value:
+        raise BaselineCaptureError("截图 RPC 未返回 base64 数据，拒绝发布不完整取证。")
+    try:
+        normalized = value.translate({ord(character): None for character in _BASE64_ASCII_WHITESPACE})
+        raw_image = base64.b64decode(normalized.encode("ascii"), validate=True)
+    except (UnicodeEncodeError, ValueError, binascii.Error) as error:
+        raise BaselineCaptureError("截图 RPC Base64 语法无效，拒绝发布不完整取证。") from error
+    try:
+        with Image.open(BytesIO(raw_image)) as image:
+            image.load()
+            image.save(target, format="PNG")
+    except (UnidentifiedImageError, OSError) as error:
+        raise BaselineCaptureError("截图 RPC 图像数据无效，拒绝发布不完整取证。") from error
+
+
+def _validate_hierarchy(value: Any) -> None:
+    """确认 RPC 返回的是完整节点树，不把原始 XML 放进错误或日志。"""
+
+    if not isinstance(value, str) or not value:
+        raise BaselineCaptureError("节点树导出为空，拒绝发布不完整取证。")
+    try:
+        root = ElementTree.fromstring(value)
+    except ElementTree.ParseError as error:
+        raise BaselineCaptureError("节点树不是有效 XML，拒绝发布不完整取证。") from error
+    if root.tag != "hierarchy":
+        raise BaselineCaptureError("节点树根节点无效，拒绝发布不完整取证。")
+
+
+def _manifest(
+    inspection: DeviceInspection,
+    serial: str,
+    pdd_version: str,
+    screenshot_path: Path,
+    hierarchy_path: Path,
+) -> dict[str, Any]:
+    """只序列化审计摘要；页面内容留在 XML 文件，不进入日志或 manifest。"""
+
+    return {
+        "schema_version": 1,
+        "captured_at": datetime.now(UTC).isoformat(),
+        "channel": "wifi" if ":" in serial else "usb",
+        "serial_sha256": sha256(serial.encode("utf-8")).hexdigest(),
+        "device": {
+            "model": inspection.model,
+            "android_version": inspection.android_version,
+            "pdd_package": PDD_PACKAGE,
+            "pdd_version": pdd_version,
+        },
+        "artifacts": [
+            {"path": screenshot_path.name, "sha256": _sha256_file(screenshot_path)},
+            {"path": hierarchy_path.name, "sha256": _sha256_file(hierarchy_path)},
+        ],
+    }
+
+
+def _sha256_file(path: Path) -> str:
+    digest = sha256()
+    with path.open("rb") as source:
+        for chunk in iter(lambda: source.read(1024 * 1024), b""):
+            digest.update(chunk)
+    return digest.hexdigest()

client/src/cmbuyer_client/device/sku_evidence_sanitizer.py

@@ -0,0 +1,580 @@
+"""T-103 原始规格面板证据的本机确定性隐私脱敏。
+
+此模块只处理人工采集的本地文件：不连接设备、不识别规格；仅可按已取证的固定
+几何和严格格式，将跨隐私边界的价格叶节点投影到派生 XML。
+"""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from hashlib import sha256
+import json
+from pathlib import Path
+import re
+import shutil
+from typing import Any
+from uuid import uuid4
+from xml.etree import ElementTree
+
+from PIL import Image, ImageDraw, UnidentifiedImageError
+
+from ..pdd.product_url import ProductUrl, ProductUrlError, parse_product_url
+from ..pdd.sku_panel_state import HUMAN_DECLARED_STATES
+
+
+SANITIZER_VERSION = "t103-privacy-v5"
+EXPECTED_GOODS_ID = "937122477375"
+EXPECTED_PDD_VERSION = "8.17.0"
+EXPECTED_DEVICE_MODEL = "PKG110"
+EXPECTED_ANDROID_VERSION = "16"
+EXPECTED_SCREENSHOT_WIDTH = 1080
+EXPECTED_SCREENSHOT_HEIGHT = 2376
+EXPECTED_XML_WIDTH = 1080
+EXPECTED_XML_HEIGHT = 2376
+_ARTIFACT_FILES = ("screenshot.png", "hierarchy.xml")
+_SHA256_RE = re.compile(r"[0-9a-f]{64}\Z")
+_BOUNDS_RE = re.compile(r"\[(-?\d+),(-?\d+)\]\[(-?\d+),(-?\d+)\]\Z")
+_FULL_PHONE_RE = re.compile(r"(?:\+?86)?1[3-9]\d{9}")
+_MASKED_PHONE_RE = re.compile(r"1[3-9]\d\*{4}\d{4}")
+_MASK_TRANSLATION = str.maketrans({"＊": "*", "•": "*", "·": "*", "×": "*", "x": "*", "X": "*"})
+_SEPARATOR_RE = re.compile(r"[\s\-‐‑‒–—―()（）]+")
+# 这两个槽位来自 T-103 当前第一态、1080×2376 XML 坐标的人工审查。它们不是通用
+# 页面判据；坐标、文本或结构任何变化都停止发布，交由人重新取证。
+_CROSSING_PRICE_SLOTS = {
+    (396, 503, 712, 570): "[396,503][712,570]",
+    (730, 503, 895, 570): "[730,503][895,570]",
+}
+_CROSSING_PRICE_BOUNDS = frozenset(_CROSSING_PRICE_SLOTS)
+_PRICE_PROJECTION_ATTRIBUTES = (
+    "bounds",
+    "text",
+    "package",
+    "class",
+    "clickable",
+    "enabled",
+    "visible-to-user",
+)
+# 仅接受普通 ASCII 空格，且每个可分隔位置最多一个；禁止换行、折扣、支付/提交文案和
+# 任何其它字符。前缀捕获组用于区分当前价与至多一个划线/原价候选。
+# T-103 人工在 live 规格面板确认当前价槽的完整非敏感前缀仅为“快卖完”；不得兼容
+# 未取证的“快卖光”或其它相近文案。
+_CROSSING_PRICE_TEXT_RE = re.compile(r" {0,1}(?:(快卖完) {0,1})?[¥￥] {0,1}[1-9]\d*\.\d{2} {0,1}\Z")
+_CROSSING_PRICE_PREFIX_RE = re.compile(r" {0,1}(?:快卖完 {0,1})?[¥￥] {0,1}[1-9]\d*\.\d{2} {0,1}")
+_CROSSING_PRICE_ALLOWED_CHARACTERS = frozenset(" 快卖完¥￥0123456789.")
+
+
+class SkuEvidenceSanitizationError(RuntimeError):
+    """原始证据不能被安全地发布为派生证据。"""
+
+
+@dataclass
+class _CleanupStats:
+    """仅记录节点数量，供派生 manifest 审计；不记录任何页面文本。"""
+
+    removed_nodes: int = 0
+    cleared_crossing_nodes: int = 0
+    preserved_crossing_price_nodes: int = 0
+    retained_below_nodes: int = 0
+    max_right: int = 0
+    max_bottom: int = 0
+    current_price_candidates: int = 0
+    original_price_candidates: int = 0
+
+
+@dataclass(frozen=True)
+class PrivacyMaskConfig:
+    """仅描述已人工确认的隐私几何区域，绝不承担页面或规格判据。"""
+
+    version: str
+    screenshot_width: int
+    screenshot_height: int
+    xml_width: int
+    xml_height: int
+    privacy_top: int
+
+
+PRIVACY_MASK_CONFIG = PrivacyMaskConfig(
+    version=SANITIZER_VERSION,
+    screenshot_width=EXPECTED_SCREENSHOT_WIDTH,
+    screenshot_height=EXPECTED_SCREENSHOT_HEIGHT,
+    xml_width=EXPECTED_XML_WIDTH,
+    xml_height=EXPECTED_XML_HEIGHT,
+    # 主审在原始截图确认 y < 540 为收货/手机号区域；整宽遮罩优先保护隐私而非保留版面。
+    privacy_top=540,
+)
+
+
+@dataclass(frozen=True)
+class SkuEvidenceSanitizationResult:
+    """已经原子发布的派生证据位置。"""
+
+    output_directory: Path
+    manifest_path: Path
+    screenshot_path: Path
+    hierarchy_path: Path
+
+
+def sanitize_sku_panel_evidence(raw_directory: Path, output_directory: Path) -> SkuEvidenceSanitizationResult:
+    """校验 raw 三文件，并发布同级 ``derived`` 的脱敏副本。
+
+    目标已存在时在读取任何输入前拒绝，避免混入旧派生物或覆盖人工保留文件。
+    """
+
+    raw = Path(raw_directory)
+    target = Path(output_directory)
+    _validate_directories(raw, target)
+    if target.exists():
+        raise SkuEvidenceSanitizationError("派生证据目录已存在，拒绝覆盖。")
+
+    staging: Path | None = None
+    try:
+        source_manifest_path = _required_file(raw, "manifest.json")
+        source_screenshot_path = _required_file(raw, "screenshot.png")
+        source_hierarchy_path = _required_file(raw, "hierarchy.xml")
+        manifest = _read_source_manifest(source_manifest_path)
+        link, state, source_hashes = _validate_source_manifest(manifest)
+        _verify_source_hashes(source_screenshot_path, source_hierarchy_path, source_hashes)
+
+        staging = raw.parent / f".derived.staging-{uuid4().hex}"
+        staging.mkdir()
+        derived_screenshot_path = staging / "screenshot.png"
+        _sanitize_screenshot(source_screenshot_path, derived_screenshot_path)
+        derived_hierarchy_path = staging / "hierarchy.xml"
+        cleanup_stats = _sanitize_hierarchy(source_hierarchy_path, derived_hierarchy_path)
+
+        derived_manifest_path = staging / "manifest.json"
+        derived_manifest_path.write_text(
+            json.dumps(
+                _derived_manifest(
+                    manifest,
+                    link,
+                    state,
+                    source_manifest_path,
+                    source_screenshot_path,
+                    source_hierarchy_path,
+                    derived_screenshot_path,
+                    derived_hierarchy_path,
+                    cleanup_stats,
+                ),
+                ensure_ascii=False,
+                indent=2,
+                sort_keys=True,
+            )
+            + "\n",
+            encoding="utf-8",
+        )
+        _publish_staging(staging, target)
+    except SkuEvidenceSanitizationError:
+        _clean_staging(staging)
+        raise
+    except (OSError, ValueError, ElementTree.ParseError, UnidentifiedImageError) as error:
+        _clean_staging(staging)
+        # 原始异常可能含文件路径、JSON/XML 文本或其他敏感内容，不能向 CLI/日志传播。
+        raise SkuEvidenceSanitizationError("原始证据无法安全脱敏，未发布任何派生产物。") from error
+    except Exception as error:
+        _clean_staging(staging)
+        raise SkuEvidenceSanitizationError("原始证据脱敏未完成，未发布任何派生产物。") from error
+
+    return SkuEvidenceSanitizationResult(
+        output_directory=target,
+        manifest_path=target / "manifest.json",
+        screenshot_path=target / "screenshot.png",
+        hierarchy_path=target / "hierarchy.xml",
+    )
+
+
+def _validate_directories(raw: Path, target: Path) -> None:
+    if raw.name != "raw" or not raw.is_dir():
+        raise SkuEvidenceSanitizationError("原始证据目录必须是存在的 raw 目录。")
+    if target.name != "derived" or target.parent != raw.parent:
+        raise SkuEvidenceSanitizationError("派生证据目录必须是 raw 同级的 derived 目录。")
+
+
+def _required_file(raw: Path, filename: str) -> Path:
+    candidate = raw / filename
+    if not candidate.is_file():
+        raise SkuEvidenceSanitizationError("原始证据文件集合不完整。")
+    return candidate
+
+
+def _read_source_manifest(path: Path) -> dict[str, Any]:
+    try:
+        value = json.loads(path.read_text(encoding="utf-8"))
+    except (OSError, UnicodeDecodeError, json.JSONDecodeError) as error:
+        raise SkuEvidenceSanitizationError("原始证据 manifest 无效。") from error
+    if not isinstance(value, dict):
+        raise SkuEvidenceSanitizationError("原始证据 manifest 结构无效。")
+    return value
+
+
+def _validate_source_manifest(manifest: dict[str, Any]) -> tuple[ProductUrl, str, dict[str, str]]:
+    product = manifest.get("product")
+    device = manifest.get("device")
+    state = manifest.get("human_declared_state")
+    if manifest.get("schema_version") != 1 or not isinstance(product, dict) or not isinstance(device, dict):
+        raise SkuEvidenceSanitizationError("原始证据 manifest 缺少必要元数据。")
+    canonical_url = product.get("canonical_url")
+    goods_id = product.get("goods_id")
+    try:
+        link = parse_product_url(canonical_url)
+    except ProductUrlError as error:
+        raise SkuEvidenceSanitizationError("原始证据商品元数据不匹配。") from error
+    if (
+        link.goods_id != EXPECTED_GOODS_ID
+        or goods_id != EXPECTED_GOODS_ID
+        or device.get("model") != EXPECTED_DEVICE_MODEL
+        or device.get("android_version") != EXPECTED_ANDROID_VERSION
+        or device.get("pdd_version") != EXPECTED_PDD_VERSION
+        or device.get("pdd_package") != "com.xunmeng.pinduoduo"
+        or not isinstance(state, str)
+        or state not in HUMAN_DECLARED_STATES
+    ):
+        raise SkuEvidenceSanitizationError("原始证据元数据与脱敏配置不匹配。")
+    return link, state, _artifact_hashes(manifest)
+
+
+def _artifact_hashes(manifest: dict[str, Any]) -> dict[str, str]:
+    artifacts = manifest.get("artifacts")
+    if not isinstance(artifacts, list):
+        raise SkuEvidenceSanitizationError("原始证据 manifest 缺少文件校验信息。")
+    hashes: dict[str, str] = {}
+    for artifact in artifacts:
+        if not isinstance(artifact, dict):
+            raise SkuEvidenceSanitizationError("原始证据 manifest 文件校验信息无效。")
+        path = artifact.get("path")
+        digest = artifact.get("sha256")
+        if path not in _ARTIFACT_FILES or path in hashes or not isinstance(digest, str) or not _SHA256_RE.fullmatch(digest):
+            raise SkuEvidenceSanitizationError("原始证据 manifest 文件校验信息无效。")
+        hashes[path] = digest
+    if set(hashes) != set(_ARTIFACT_FILES):
+        raise SkuEvidenceSanitizationError("原始证据 manifest 文件校验信息不完整。")
+    return hashes
+
+
+def _verify_source_hashes(screenshot_path: Path, hierarchy_path: Path, expected: dict[str, str]) -> None:
+    if (
+        _sha256_file(screenshot_path) != expected["screenshot.png"]
+        or _sha256_file(hierarchy_path) != expected["hierarchy.xml"]
+    ):
+        raise SkuEvidenceSanitizationError("原始证据文件校验失败。")
+
+
+def _sanitize_screenshot(source: Path, target: Path) -> None:
+    try:
+        with Image.open(source) as image:
+            image.load()
+            if image.format != "PNG" or image.size != (
+                PRIVACY_MASK_CONFIG.screenshot_width,
+                PRIVACY_MASK_CONFIG.screenshot_height,
+            ):
+                raise SkuEvidenceSanitizationError("原始截图分辨率或格式与脱敏配置不匹配。")
+            sanitized = image.convert("RGBA")
+    except SkuEvidenceSanitizationError:
+        raise
+    except (OSError, UnidentifiedImageError) as error:
+        raise SkuEvidenceSanitizationError("原始截图无效。") from error
+
+    # 用不透明黑色覆盖 y < 540，保证截图与 XML 使用相同的隐私几何边界。
+    ImageDraw.Draw(sanitized).rectangle(
+        (0, 0, PRIVACY_MASK_CONFIG.screenshot_width - 1, PRIVACY_MASK_CONFIG.privacy_top - 1),
+        fill=(0, 0, 0, 255),
+    )
+    sanitized.save(target, format="PNG", optimize=False, compress_level=9)
+
+
+def _sanitize_hierarchy(source: Path, target: Path) -> _CleanupStats:
+    try:
+        root = ElementTree.parse(source).getroot()
+    except (OSError, ElementTree.ParseError) as error:
+        raise SkuEvidenceSanitizationError("原始节点树无效。") from error
+    if root.tag != "hierarchy":
+        raise SkuEvidenceSanitizationError("原始节点树结构不匹配。")
+    if not list(root):
+        raise SkuEvidenceSanitizationError("原始节点树结构不匹配。")
+    stats = _CleanupStats()
+    _clear_node_text(root)
+    for child in list(root):
+        _sanitize_node(root, child, stats)
+    _require_expected_xml_coordinate_space(stats)
+    if stats.removed_nodes < 1 or stats.retained_below_nodes < 1:
+        raise SkuEvidenceSanitizationError("原始节点树未满足隐私几何结构。")
+    _require_safe_crossing_price_projection(stats)
+    if _contains_phone(root):
+        raise SkuEvidenceSanitizationError("派生节点树仍包含手机号，拒绝发布。")
+    ElementTree.ElementTree(root).write(target, encoding="utf-8", xml_declaration=True)
+    return stats
+
+
+def _sanitize_node(parent: ElementTree.Element, node: ElementTree.Element, stats: _CleanupStats) -> None:
+    if node.tag != "node":
+        raise SkuEvidenceSanitizationError("原始节点树结构不匹配。")
+    bounds = _parse_bounds(node.get("bounds"))
+    _observe_bounds(stats, bounds)
+    position = _vertical_position(bounds)
+    if position == "private":
+        # 私有带内的父节点不可以悄然包含下方子节点，否则会把仍需审计的下方内容一起丢失。
+        for descendant in node.iter("node"):
+            descendant_bounds = _parse_bounds(descendant.get("bounds"))
+            _observe_bounds(stats, descendant_bounds)
+            if _vertical_position(descendant_bounds) != "private":
+                raise SkuEvidenceSanitizationError("原始节点树 bounds 结构不匹配。")
+        stats.removed_nodes += sum(1 for _ in node.iter("node"))
+        parent.remove(node)
+        return
+    if position == "crossing":
+        if bounds in _CROSSING_PRICE_BOUNDS and node.get("text"):
+            _project_crossing_price_node(node, bounds, stats)
+        else:
+            # 全屏/跨界容器可保留其下方子节点，但自身所有属性和文本都可能含地址或手机号。
+            _clear_node_text(node)
+            stats.cleared_crossing_nodes += 1
+    else:
+        stats.retained_below_nodes += 1
+    for child in list(node):
+        _sanitize_node(node, child, stats)
+
+
+def _parse_bounds(value: object) -> tuple[int, int, int, int]:
+    if not isinstance(value, str):
+        raise SkuEvidenceSanitizationError("原始节点树 bounds 缺失或无效。")
+    match = _BOUNDS_RE.fullmatch(value)
+    if match is None:
+        raise SkuEvidenceSanitizationError("原始节点树 bounds 缺失或无效。")
+    left, top, right, bottom = (int(group) for group in match.groups())
+    if not (0 <= left < right and 0 <= top < bottom):
+        raise SkuEvidenceSanitizationError("原始节点树 bounds 缺失或无效。")
+    return left, top, right, bottom
+
+
+def _observe_bounds(stats: _CleanupStats, bounds: tuple[int, int, int, int]) -> None:
+    _, _, right, bottom = bounds
+    stats.max_right = max(stats.max_right, right)
+    stats.max_bottom = max(stats.max_bottom, bottom)
+
+
+def _require_expected_xml_coordinate_space(stats: _CleanupStats) -> None:
+    if (
+        stats.max_right != PRIVACY_MASK_CONFIG.xml_width
+        or stats.max_bottom != PRIVACY_MASK_CONFIG.xml_height
+    ):
+        raise SkuEvidenceSanitizationError(
+            f"原始节点树坐标范围不匹配（observed {stats.max_right}x{stats.max_bottom}）。"
+        )
+
+
+def _vertical_position(bounds: tuple[int, int, int, int]) -> str:
+    _, top, _, bottom = bounds
+    if bottom <= PRIVACY_MASK_CONFIG.privacy_top:
+        return "private"
+    if top >= PRIVACY_MASK_CONFIG.privacy_top:
+        return "below"
+    return "crossing"
+
+
+def _project_crossing_price_node(
+    node: ElementTree.Element,
+    bounds: tuple[int, int, int, int],
+    stats: _CleanupStats,
+) -> None:
+    """投影唯一允许的跨界价格叶节点；任何结构漂移一律拒绝发布。"""
+
+    if (
+        len(node) != 0
+        or node.get("package") != "com.xunmeng.pinduoduo"
+        or node.get("class") != "android.widget.TextView"
+        or node.get("clickable") != "false"
+        or node.get("enabled") != "true"
+        or node.get("visible-to-user") != "true"
+    ):
+        raise SkuEvidenceSanitizationError("跨界价格节点结构不匹配，拒绝发布。")
+    text = node.get("text")
+    if text is None:
+        raise SkuEvidenceSanitizationError("跨界价格节点文本不匹配，拒绝发布。")
+    match = _CROSSING_PRICE_TEXT_RE.fullmatch(text)
+    if match is None:
+        raise _crossing_price_text_mismatch_error(bounds, text)
+
+    # 只有这七项经上述检查后可进入派生 XML；尤其不复制 content-desc、resource-id 等原始属性。
+    node.attrib = {attribute: node.attrib[attribute] for attribute in _PRICE_PROJECTION_ATTRIBUTES}
+    node.text = None
+    node.tail = None
+    stats.preserved_crossing_price_nodes += 1
+    if match.group(1) is not None:
+        stats.current_price_candidates += 1
+    else:
+        stats.original_price_candidates += 1
+
+
+def _crossing_price_text_mismatch_error(
+    bounds: tuple[int, int, int, int],
+    text: str,
+) -> SkuEvidenceSanitizationError:
+    """仅输出固定槽位与 reason，避免将任意 raw 正文带入 CLI 或日志。"""
+
+    reason = _crossing_price_text_mismatch_reason(text)
+    slot = _CROSSING_PRICE_SLOTS[bounds]
+    return SkuEvidenceSanitizationError(f"跨界价格节点文本不匹配：slot={slot}；reason={reason}。")
+
+
+def _crossing_price_text_mismatch_reason(text: str) -> str:
+    """将未匹配文本归类为受控枚举；返回值绝不包含原始片段。"""
+
+    if "\r" in text or "\n" in text:
+        return "newline"
+    if any(character.isspace() and character != " " for character in text):
+        return "non_ascii_whitespace"
+    if any(marker in text for marker in ("提交订单", "支付", "下单", "优惠")):
+        return "extra_or_order"
+    without_one_leading_space = text[1:] if text.startswith(" ") else text
+    if without_one_leading_space.startswith("快要抢光"):
+        return "observed_prefix_kuaiyaoqiangguang"
+    if without_one_leading_space.startswith("快") and not without_one_leading_space.startswith("快卖完"):
+        return "known_prefix_missing"
+    if "¥" not in text and "￥" not in text:
+        return "currency_missing"
+    if _CROSSING_PRICE_PREFIX_RE.match(text) is not None:
+        return "extra_or_order"
+    if any(character not in _CROSSING_PRICE_ALLOWED_CHARACTERS for character in text):
+        return "forbidden_characters"
+    return "amount_shape"
+
+
+def _require_safe_crossing_price_projection(stats: _CleanupStats) -> None:
+    """当前价必须唯一；原价仅可选且唯一，避免把任意金额释放为价格证据。"""
+
+    if (
+        stats.current_price_candidates != 1
+        or stats.original_price_candidates > 1
+        or stats.preserved_crossing_price_nodes != stats.current_price_candidates + stats.original_price_candidates
+    ):
+        raise SkuEvidenceSanitizationError("跨界价格候选不唯一或缺失，拒绝发布。")
+
+
+def _clear_node_text(node: ElementTree.Element) -> None:
+    node.attrib = {"bounds": node.attrib["bounds"]} if "bounds" in node.attrib else {}
+    node.text = None
+    node.tail = None
+
+
+def _contains_phone(root: ElementTree.Element) -> bool:
+    """逐项与跨节点复检电话，避免分隔符、遮罩字符或节点切分绕过。"""
+
+    all_values: list[str] = []
+    content_values: list[str] = []
+    for element in root.iter():
+        if element.text:
+            all_values.append(element.text)
+            content_values.append(element.text)
+        for attribute, value in element.attrib.items():
+            all_values.append(value)
+            if attribute != "bounds":
+                content_values.append(value)
+        if element.tail:
+            all_values.append(element.tail)
+            content_values.append(element.tail)
+    normalized_values = [_normalize_phone_value(value) for value in all_values]
+    normalized_all_document = "".join(normalized_values)
+    normalized_document = "".join(_normalize_phone_value(value) for value in content_values)
+    return (
+        any(_matches_phone(value) for value in normalized_values)
+        or _matches_phone(normalized_all_document)
+        or _matches_phone(normalized_document)
+    )
+
+
+def _normalize_phone_value(value: str) -> str:
+    return _SEPARATOR_RE.sub("", value.translate(_MASK_TRANSLATION))
+
+
+def _matches_phone(value: str) -> bool:
+    return _FULL_PHONE_RE.search(value) is not None or _MASKED_PHONE_RE.search(value) is not None
+
+
+def _derived_manifest(
+    source_manifest: dict[str, Any],
+    link: ProductUrl,
+    state: str,
+    source_manifest_path: Path,
+    source_screenshot_path: Path,
+    source_hierarchy_path: Path,
+    derived_screenshot_path: Path,
+    derived_hierarchy_path: Path,
+    cleanup_stats: _CleanupStats,
+) -> dict[str, Any]:
+    device = source_manifest["device"]
+    return {
+        "schema_version": 1,
+        "privacy_tier": "SANITIZED",
+        "sanitizer_version": PRIVACY_MASK_CONFIG.version,
+        "screenshot_space": {
+            "width": PRIVACY_MASK_CONFIG.screenshot_width,
+            "height": PRIVACY_MASK_CONFIG.screenshot_height,
+            "privacy_mask_rectangle": [
+                0,
+                0,
+                PRIVACY_MASK_CONFIG.screenshot_width,
+                PRIVACY_MASK_CONFIG.privacy_top,
+            ],
+        },
+        "xml_coordinate_space": {
+            "width": PRIVACY_MASK_CONFIG.xml_width,
+            "height": PRIVACY_MASK_CONFIG.xml_height,
+            "privacy_mask_rectangle": [0, 0, PRIVACY_MASK_CONFIG.xml_width, PRIVACY_MASK_CONFIG.privacy_top],
+            "observed_max": {"right": cleanup_stats.max_right, "bottom": cleanup_stats.max_bottom},
+        },
+        "privacy_cleanup": {
+            "removed_nodes": cleanup_stats.removed_nodes,
+            "cleared_crossing_nodes": cleanup_stats.cleared_crossing_nodes,
+            "preserved_crossing_price_nodes": cleanup_stats.preserved_crossing_price_nodes,
+            "retained_below_nodes": cleanup_stats.retained_below_nodes,
+            "max_right": cleanup_stats.max_right,
+            "max_bottom": cleanup_stats.max_bottom,
+        },
+        "product": {"goods_id": link.goods_id},
+        "human_declared_state": state,
+        "device": {
+            "model": device["model"],
+            "android_version": device.get("android_version"),
+            "pdd_package": device["pdd_package"],
+            "pdd_version": device["pdd_version"],
+        },
+        # source hashes stay only in the local derived manifest; no raw path, serial or body is retained.
+        "source": {
+            "manifest_sha256": _sha256_file(source_manifest_path),
+            "artifacts": [
+                {"path": "screenshot.png", "sha256": _sha256_file(source_screenshot_path)},
+                {"path": "hierarchy.xml", "sha256": _sha256_file(source_hierarchy_path)},
+            ],
+        },
+        "derived": {
+            "artifacts": [
+                {"path": "screenshot.png", "sha256": _sha256_file(derived_screenshot_path)},
+                {"path": "hierarchy.xml", "sha256": _sha256_file(derived_hierarchy_path)},
+            ]
+        },
+    }
+
+
+def _sha256_file(path: Path) -> str:
+    digest = sha256()
+    with path.open("rb") as source:
+        for chunk in iter(lambda: source.read(1024 * 1024), b""):
+            digest.update(chunk)
+    return digest.hexdigest()
+
+
+def _clean_staging(staging: Path | None) -> None:
+    if staging is not None and staging.exists():
+        shutil.rmtree(staging)
+
+
+def _publish_staging(staging: Path, target: Path) -> None:
+    """发布前二次检查，并使用目录 rename 而不是会覆盖目标的 replace。"""
+
+    if target.exists():
+        raise SkuEvidenceSanitizationError("派生证据目录已存在，拒绝覆盖。")
+    try:
+        staging.rename(target)
+    except OSError as error:
+        # 竞态中新目标出现或文件系统拒绝 rename 时一律不尝试覆盖或重试。
+        raise SkuEvidenceSanitizationError("派生证据目录发布失败，未覆盖已有目录。") from error

client/src/cmbuyer_client/logging_policy.py

@@ -0,0 +1,66 @@
+"""采购工具日志的最小脱敏策略。"""
+
+from __future__ import annotations
+
+import logging
+from pathlib import Path
+import re
+
+from .runtime import RuntimePaths
+
+
+LOGGER_NAME = "cmbuyer_client"
+REDACTED = "[已隐藏]"
+
+_SENSITIVE_KEY_PATTERN = (
+    r"token|authorization|password|secret|api[_-]?key|"
+    r"address|phone|mobile|payment|pay|card|bank[_-]?account|"
+    r"令牌|授权|密码|密钥|地址|手机号|电话|支付|银行卡"
+)
+_KEY_VALUE_PATTERN = re.compile(
+    rf"(?P<key>{_SENSITIVE_KEY_PATTERN})\s*(?P<separator>[:=])\s*"
+    r"(?P<value>\"[^\"]*\"|'[^']*'|[^\s,;]+)",
+    flags=re.IGNORECASE,
+)
+_PHONE_PATTERN = re.compile(r"(?<!\d)1[3-9]\d{9}(?!\d)")
+
+
+def redact_text(message: str) -> str:
+    """移除日志文本中的凭据、地址、手机号和支付字段值。"""
+
+    def replace_key_value(match: re.Match[str]) -> str:
+        return f"{match.group('key')}{match.group('separator')}{REDACTED}"
+
+    redacted = _KEY_VALUE_PATTERN.sub(replace_key_value, message)
+    return _PHONE_PATTERN.sub(REDACTED, redacted)
+
+
+class SensitiveDataFilter(logging.Filter):
+    """在任何 handler 格式化记录前，清除敏感字段。
+
+    该过滤器在日志写入前替换 ``msg`` 与 ``args``，确保文件 handler 不会得到原始值。
+    """
+
+    def filter(self, record: logging.LogRecord) -> bool:
+        record.msg = redact_text(record.getMessage())
+        record.args = ()
+        return True
+
+
+def configure_application_logger(paths: RuntimePaths) -> logging.Logger:
+    """配置唯一的 UTF-8 文件日志，并确保其先经过脱敏过滤。"""
+
+    paths.ensure_exists()
+    logger = logging.getLogger(LOGGER_NAME)
+    logger.setLevel(logging.INFO)
+    logger.propagate = False
+
+    for handler in tuple(logger.handlers):
+        logger.removeHandler(handler)
+        handler.close()
+
+    handler = logging.FileHandler(Path(paths.logs) / "client.log", encoding="utf-8")
+    handler.addFilter(SensitiveDataFilter())
+    handler.setFormatter(logging.Formatter("%(asctime)s %(levelname)s %(message)s"))
+    logger.addHandler(handler)
+    return logger

client/src/cmbuyer_client/pdd/__init__.py

@@ -0,0 +1,23 @@
+"""拼多多链接的受限打开、只读取证与经取证的规格面板选择。
+
+此包不提供通用页面选择器、输入、滑动或任何订单动作。
+"""
+
+from .product_open import ProductOpenCapturer, ProductOpenResult
+from .product_url import ProductUrl, ProductUrlError, parse_product_url
+from .sku_selection import SkuSelection, SkuSelectionError, SkuSelectionFlow
+from .sku_selection_runner import SkuSelectionRunError, SkuSelectionRunResult, SkuSelectionRunner
+
+__all__ = [
+    "ProductOpenCapturer",
+    "ProductOpenResult",
+    "ProductUrl",
+    "ProductUrlError",
+    "SkuSelection",
+    "SkuSelectionError",
+    "SkuSelectionFlow",
+    "SkuSelectionRunError",
+    "SkuSelectionRunResult",
+    "SkuSelectionRunner",
+    "parse_product_url",
+]

client/src/cmbuyer_client/pdd/product_open.py

@@ -0,0 +1,262 @@
+"""安全打开 canonical 商品链接后的只读取证。"""
+
+from __future__ import annotations
+
+from collections.abc import Callable
+from dataclasses import dataclass
+from datetime import UTC, datetime
+from hashlib import sha256
+import json
+from math import isfinite
+import os
+from pathlib import Path
+import shutil
+from time import monotonic, sleep
+from typing import Any, Protocol
+from uuid import uuid4
+
+from adbutils.errors import AdbTimeout
+from uiautomator2.exceptions import HTTPTimeoutError
+
+from ..device.adb import AdbClient, DeviceConnectionError, DeviceInspection, IntentLaunchSummary
+from ..device.baseline import (
+    HIERARCHY_PARAMS,
+    PDD_PACKAGE,
+    SCREENSHOT_PARAMS,
+    _save_base64_screenshot,
+    _sha256_file,
+    _validate_hierarchy,
+)
+from .product_url import ProductUrl, parse_product_url
+
+
+EXPECTED_PDD_VERSION = "8.17.0"
+
+
+class ProductOpenError(RuntimeError):
+    """商品打开或证据发布未完整完成。"""
+
+
+class ProductVersionMismatchError(ProductOpenError):
+    """运行时拼多多版本不是经取证允许的版本。"""
+
+
+class ProductPackageMismatchError(ProductOpenError):
+    """Intent 后在有限时间内未观察到拼多多前台包。"""
+
+
+class ProductOpenTimeoutError(ProductOpenError):
+    """商品打开后的只读取证超时。"""
+
+
+class ProductScreenshotCaptureError(ProductOpenError):
+    """Intent 后截图不能作为完整 PNG 证据保存。"""
+
+
+class ProductHierarchyCaptureError(ProductOpenError):
+    """Intent 后完整节点树不能作为有效 XML 证据保存。"""
+
+
+class ProductOpenUiDevice(Protocol):
+    """本任务所需的只读 uiautomator2 接口；故意没有任何 UI 操作方法。"""
+
+    def app_info(self, package_name: str) -> dict[str, Any]:
+        """读取应用元数据。"""
+
+    def app_current(self) -> dict[str, Any]:
+        """读取当前前台应用元数据。"""
+
+    def jsonrpc_call(self, method: str, params: Any = None, timeout: float = 10) -> Any:
+        """调用只读取证所需的公开 JSON-RPC 方法。"""
+
+
+@dataclass(frozen=True)
+class ProductOpenResult:
+    """已原子发布的商品打开证据位置。"""
+
+    output_directory: Path
+    manifest_path: Path
+    screenshot_path: Path
+    hierarchy_path: Path
+
+
+class ProductOpenCapturer:
+    """以 fail-closed 顺序打开已重建链接，并在打开后只读留证。
+
+    本类不判断商品页、Activity、文案或控件；打开后只确认当前 package，随后采集截图与
+    完整节点树。任何失败都不会发布半成品证据目录。
+    """
+
+    def __init__(
+        self,
+        adb_client: AdbClient,
+        connector: Callable[[str], ProductOpenUiDevice],
+        timeout_seconds: float,
+        foreground_poll_interval_seconds: float = 0.2,
+        monotonic_clock: Callable[[], float] = monotonic,
+        sleep_function: Callable[[float], None] = sleep,
+    ) -> None:
+        if not _is_positive_finite(timeout_seconds):
+            raise ValueError("timeout_seconds 必须是大于 0 的有限数值")
+        if not _is_positive_finite(foreground_poll_interval_seconds):
+            raise ValueError("foreground_poll_interval_seconds 必须是大于 0 的有限数值")
+        self._adb_client = adb_client
+        self._connector = connector
+        self._timeout_seconds = timeout_seconds
+        self._foreground_poll_interval_seconds = foreground_poll_interval_seconds
+        self._monotonic_clock = monotonic_clock
+        self._sleep_function = sleep_function
+
+    def open_and_capture(self, serial: str, product_url: str, output_directory: Path) -> ProductOpenResult:
+        """完成唯一允许的 Intent 打开及其后的只读取证。"""
+
+        # 公共入口只接收原始字符串并每次重新解析，不能由调用方构造不一致的值对象伪造 manifest。
+        link = parse_product_url(product_url)
+        target = Path(output_directory)
+        _validate_new_target(target)
+
+        staging: Path | None = None
+        try:
+            # inspect 必须先于连接和 Intent，复用 T-101 的显式 serial、重复物理设备拒绝逻辑。
+            inspection = self._adb_client.inspect(serial)
+            device = self._connector(serial)
+            pdd_version = _require_expected_version(device.app_info(PDD_PACKAGE))
+
+            # 版本精确匹配是 Intent 的前置条件，失败时绝不调用 start_pdd_view_intent。
+            intent = self._adb_client.start_pdd_view_intent(serial, link.goods_id)
+            self._wait_for_pdd_foreground(device)
+
+            target.parent.mkdir(parents=True, exist_ok=True)
+            staging = target.parent / f".{target.name}.staging-{uuid4().hex}"
+            staging.mkdir()
+            screenshot_path = staging / "screenshot.png"
+            try:
+                _save_base64_screenshot(
+                    device.jsonrpc_call("takeScreenshot", SCREENSHOT_PARAMS, timeout=self._timeout_seconds),
+                    screenshot_path,
+                )
+            except (AdbTimeout, HTTPTimeoutError, TimeoutError):
+                raise
+            except Exception as error:
+                raise ProductScreenshotCaptureError("商品打开后截图取证失败，未发布任何证据产物。") from error
+
+            try:
+                hierarchy = device.jsonrpc_call(
+                    "dumpWindowHierarchy",
+                    HIERARCHY_PARAMS,
+                    timeout=self._timeout_seconds,
+                )
+                _validate_hierarchy(hierarchy)
+            except (AdbTimeout, HTTPTimeoutError, TimeoutError):
+                raise
+            except Exception as error:
+                raise ProductHierarchyCaptureError("商品打开后节点树取证失败，未发布任何证据产物。") from error
+            hierarchy_path = staging / "hierarchy.xml"
+            hierarchy_path.write_text(hierarchy, encoding="utf-8")
+
+            manifest_path = staging / "manifest.json"
+            manifest_path.write_text(
+                json.dumps(
+                    _manifest(inspection, serial, link, pdd_version, intent, screenshot_path, hierarchy_path),
+                    ensure_ascii=False,
+                    indent=2,
+                    sort_keys=True,
+                )
+                + "\n",
+                encoding="utf-8",
+            )
+            os.replace(staging, target)
+        except (ProductOpenError, DeviceConnectionError):
+            _clean_staging(staging)
+            raise
+        except (AdbTimeout, HTTPTimeoutError, TimeoutError) as error:
+            _clean_staging(staging)
+            raise ProductOpenTimeoutError("商品打开后的只读取证超时，未发布任何证据产物。") from error
+        except Exception as error:
+            _clean_staging(staging)
+            # 底层异常可能含 serial、路径或远端页面内容，不能直接向 CLI 或日志传播。
+            raise ProductOpenError("商品打开或只读取证未完成，未发布任何证据产物。") from error
+
+        return ProductOpenResult(
+            output_directory=target,
+            manifest_path=target / "manifest.json",
+            screenshot_path=target / "screenshot.png",
+            hierarchy_path=target / "hierarchy.xml",
+        )
+
+    def _wait_for_pdd_foreground(self, device: ProductOpenUiDevice) -> None:
+        """只轮询当前 package，直到 deadline；Activity 和节点树均不参与本判据。"""
+
+        deadline = self._monotonic_clock() + self._timeout_seconds
+        while True:
+            if _is_pdd_foreground(device.app_current()):
+                return
+            remaining = deadline - self._monotonic_clock()
+            if remaining <= 0:
+                raise ProductPackageMismatchError(
+                    "商品链接打开后未在限定时间内进入拼多多，已停止后续取证。"
+                )
+            # 每个失败观察后都等待正的、受 deadline 约束的时长，避免 busy-loop。
+            self._sleep_function(min(self._foreground_poll_interval_seconds, remaining))
+
+
+def _validate_new_target(target: Path) -> None:
+    if target.exists():
+        raise ProductOpenError("输出目录已存在；为防止混入旧证据，拒绝覆盖。")
+    if not target.name:
+        raise ProductOpenError("输出目录必须是明确的新目录。")
+
+
+def _clean_staging(staging: Path | None) -> None:
+    if staging is not None and staging.exists():
+        # staging 仅在本次调用中创建，删除前不解析或扩展任何调用方提供的路径。
+        shutil.rmtree(staging)
+
+
+def _require_expected_version(app_info: dict[str, Any]) -> str:
+    if not isinstance(app_info, dict):
+        raise ProductVersionMismatchError("拼多多版本与已取证版本不一致，已停止打开商品链接。")
+    version = app_info.get("versionName") or app_info.get("version_name")
+    if not isinstance(version, str) or version != EXPECTED_PDD_VERSION:
+        raise ProductVersionMismatchError("拼多多版本与已取证版本不一致，已停止打开商品链接。")
+    return version
+
+
+def _is_positive_finite(value: object) -> bool:
+    return isinstance(value, (int, float)) and not isinstance(value, bool) and value > 0 and isfinite(value)
+
+
+def _is_pdd_foreground(current: object) -> bool:
+    return isinstance(current, dict) and current.get("package") == PDD_PACKAGE
+
+
+def _manifest(
+    inspection: DeviceInspection,
+    serial: str,
+    link: ProductUrl,
+    pdd_version: str,
+    intent: IntentLaunchSummary,
+    screenshot_path: Path,
+    hierarchy_path: Path,
+) -> dict[str, Any]:
+    """只写审计摘要；原始 serial、Activity、ADB 输出和页面正文均不进入 manifest。"""
+
+    return {
+        "schema_version": 1,
+        "captured_at": datetime.now(UTC).isoformat(),
+        "product": {"goods_id": link.goods_id, "canonical_url": link.canonical_url},
+        "channel": "wifi" if ":" in serial else "usb",
+        "serial_sha256": sha256(serial.encode("utf-8")).hexdigest(),
+        "device": {
+            "model": inspection.model,
+            "android_version": inspection.android_version,
+            "pdd_package": PDD_PACKAGE,
+            "pdd_version": pdd_version,
+        },
+        "intent": {"status": intent.status, "returncode": intent.returncode},
+        "current_package": PDD_PACKAGE,
+        "artifacts": [
+            {"path": screenshot_path.name, "sha256": _sha256_file(screenshot_path)},
+            {"path": hierarchy_path.name, "sha256": _sha256_file(hierarchy_path)},
+        ],
+    }

client/src/cmbuyer_client/pdd/product_url.py

@@ -0,0 +1,61 @@
+"""唯一允许交给 Android Intent 的商品链接。"""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from urllib.parse import parse_qsl, urlsplit
+
+
+_SCHEME = "https"
+_HOST = "mobile.yangkeduo.com"
+_PATH = "/goods.html"
+
+
+class ProductUrlError(ValueError):
+    """输入不是可安全重建的 canonical 商品链接。"""
+
+
+@dataclass(frozen=True)
+class ProductUrl:
+    """经验证的商品标识及由它重建的 canonical URL。"""
+
+    goods_id: str
+    canonical_url: str
+
+
+def parse_product_url(value: str) -> ProductUrl:
+    """只接受一个 ASCII 数字 ``goods_id`` 的拼多多商品直链。
+
+    解析结果绝不原样透传：Intent 使用的 URL 必须从 ``goods_id`` 重新构建，以排除
+    短链、额外参数、userinfo、fragment 和 URL 解析器的边缘表示。
+    """
+
+    if not isinstance(value, str):
+        raise ProductUrlError("商品链接必须是字符串。")
+    try:
+        parsed = urlsplit(value)
+        port = parsed.port
+        query_pairs = parse_qsl(parsed.query, keep_blank_values=True, strict_parsing=True)
+    except ValueError as error:
+        raise ProductUrlError("商品链接格式无效。") from error
+
+    if (
+        parsed.scheme != _SCHEME
+        or parsed.hostname != _HOST
+        or parsed.username is not None
+        or parsed.password is not None
+        or port is not None
+        or parsed.path != _PATH
+        or parsed.fragment
+    ):
+        raise ProductUrlError("商品链接不是允许的拼多多商品直链。")
+    if len(query_pairs) != 1 or query_pairs[0][0] != "goods_id":
+        raise ProductUrlError("商品链接必须且只能包含一个 goods_id 参数。")
+
+    goods_id = query_pairs[0][1]
+    if not goods_id or any(character < "0" or character > "9" for character in goods_id):
+        raise ProductUrlError("goods_id 必须是纯数字。")
+    canonical_url = f"{_SCHEME}://{_HOST}{_PATH}?goods_id={goods_id}"
+    if value != canonical_url:
+        raise ProductUrlError("商品链接必须使用唯一 canonical 表示。")
+    return ProductUrl(goods_id=goods_id, canonical_url=canonical_url)

client/src/cmbuyer_client/pdd/sku_panel_spike.py

@@ -0,0 +1,252 @@
+"""人工停留在规格面板后的只读取证。
+
+本模块不识别规格面板，不打开商品链接，也不读取价格；三种面板状态完全由现场人员声明。
+"""
+
+from __future__ import annotations
+
+from collections.abc import Callable
+from dataclasses import dataclass
+from datetime import UTC, datetime
+from hashlib import sha256
+import json
+from math import isfinite
+import os
+from pathlib import Path
+import shutil
+from typing import Any, Protocol
+from uuid import uuid4
+
+from adbutils.errors import AdbTimeout
+from uiautomator2.exceptions import HTTPTimeoutError
+
+from ..device.adb import AdbClient, DeviceConnectionError, DeviceInspection
+from ..device.baseline import (
+    HIERARCHY_PARAMS,
+    PDD_PACKAGE,
+    SCREENSHOT_PARAMS,
+    _save_base64_screenshot,
+    _sha256_file,
+    _validate_hierarchy,
+)
+from .product_open import EXPECTED_PDD_VERSION
+from .product_url import ProductUrl, parse_product_url
+from .sku_panel_state import HUMAN_DECLARED_STATES
+
+
+class SkuPanelEvidenceError(RuntimeError):
+    """人工规格面板证据无法完整发布。"""
+
+
+class SkuPanelDeclaredStateError(SkuPanelEvidenceError):
+    """调用方没有提供允许的人工声明状态。"""
+
+
+class SkuPanelVersionMismatchError(SkuPanelEvidenceError):
+    """运行时拼多多版本不是已取证版本。"""
+
+
+class SkuPanelPackageMismatchError(SkuPanelEvidenceError):
+    """人工声明前台不是拼多多时仍试图留证。"""
+
+
+class SkuPanelEvidenceTimeoutError(SkuPanelEvidenceError):
+    """只读截图或节点树取证超时。"""
+
+
+class SkuPanelScreenshotError(SkuPanelEvidenceError):
+    """截图不能保存为严格有效的 PNG。"""
+
+
+class SkuPanelHierarchyError(SkuPanelEvidenceError):
+    """节点树不能保存为严格有效的 XML。"""
+
+
+class SkuPanelUiDevice(Protocol):
+    """人工面板证据所需的只读接口，故意没有任何页面操作方法。"""
+
+    def app_info(self, package_name: str) -> dict[str, Any]:
+        """读取应用元数据。"""
+
+    def app_current(self) -> dict[str, Any]:
+        """读取当前前台应用元数据。"""
+
+    def jsonrpc_call(self, method: str, params: Any = None, timeout: float = 10) -> Any:
+        """调用公开 JSON-RPC 的只读取证方法。"""
+
+
+@dataclass(frozen=True)
+class SkuPanelEvidenceResult:
+    """已原子发布的本地证据目录。"""
+
+    output_directory: Path
+    manifest_path: Path
+    screenshot_path: Path
+    hierarchy_path: Path
+
+
+class SkuPanelEvidenceCapturer:
+    """把人工已停留的面板状态留证，不对页面作任何自动结论。
+
+    状态字段命名为 ``human_declared_state``，防止消费者把本模块误解为自动面板/规格/价格识别。
+    """
+
+    def __init__(
+        self,
+        adb_client: AdbClient,
+        connector: Callable[[str], SkuPanelUiDevice],
+        timeout_seconds: float,
+    ) -> None:
+        if not _is_positive_finite(timeout_seconds):
+            raise ValueError("timeout_seconds 必须是大于 0 的有限数值")
+        self._adb_client = adb_client
+        self._connector = connector
+        self._timeout_seconds = timeout_seconds
+
+    def capture(
+        self,
+        serial: str,
+        product_url: str,
+        human_declared_state: str,
+        output_directory: Path,
+    ) -> SkuPanelEvidenceResult:
+        """采集人工已准备的状态；不会打开链接、面板或执行任何 UI 操作。"""
+
+        link = parse_product_url(product_url)
+        state = _validate_human_declared_state(human_declared_state)
+        target = Path(output_directory)
+        _validate_new_target(target)
+
+        staging: Path | None = None
+        try:
+            # 沿用 T-101 的显式 serial、在线状态与重复物理设备 fail-closed 核验。
+            inspection = self._adb_client.inspect(serial)
+            device = self._connector(serial)
+            pdd_version = _require_expected_version(device.app_info(PDD_PACKAGE))
+            _require_pdd_foreground(device.app_current())
+
+            target.parent.mkdir(parents=True, exist_ok=True)
+            staging = target.parent / f".{target.name}.staging-{uuid4().hex}"
+            staging.mkdir()
+            screenshot_path = staging / "screenshot.png"
+            try:
+                _save_base64_screenshot(
+                    device.jsonrpc_call("takeScreenshot", SCREENSHOT_PARAMS, timeout=self._timeout_seconds),
+                    screenshot_path,
+                )
+            except (AdbTimeout, HTTPTimeoutError, TimeoutError):
+                raise
+            except Exception as error:
+                raise SkuPanelScreenshotError("规格面板截图取证失败，未发布任何证据产物。") from error
+
+            try:
+                hierarchy = device.jsonrpc_call(
+                    "dumpWindowHierarchy",
+                    HIERARCHY_PARAMS,
+                    timeout=self._timeout_seconds,
+                )
+                _validate_hierarchy(hierarchy)
+            except (AdbTimeout, HTTPTimeoutError, TimeoutError):
+                raise
+            except Exception as error:
+                raise SkuPanelHierarchyError("规格面板节点树取证失败，未发布任何证据产物。") from error
+            hierarchy_path = staging / "hierarchy.xml"
+            hierarchy_path.write_text(hierarchy, encoding="utf-8")
+
+            manifest_path = staging / "manifest.json"
+            manifest_path.write_text(
+                json.dumps(
+                    _manifest(inspection, serial, link, state, pdd_version, screenshot_path, hierarchy_path),
+                    ensure_ascii=False,
+                    indent=2,
+                    sort_keys=True,
+                )
+                + "\n",
+                encoding="utf-8",
+            )
+            os.replace(staging, target)
+        except (SkuPanelEvidenceError, DeviceConnectionError):
+            _clean_staging(staging)
+            raise
+        except (AdbTimeout, HTTPTimeoutError, TimeoutError) as error:
+            _clean_staging(staging)
+            raise SkuPanelEvidenceTimeoutError("规格面板只读取证超时，未发布任何证据产物。") from error
+        except Exception as error:
+            _clean_staging(staging)
+            # 第三方异常可能含 serial、Activity 或页面正文，不能直接向 CLI/日志传播。
+            raise SkuPanelEvidenceError("规格面板只读取证未完成，未发布任何证据产物。") from error
+
+        return SkuPanelEvidenceResult(
+            output_directory=target,
+            manifest_path=target / "manifest.json",
+            screenshot_path=target / "screenshot.png",
+            hierarchy_path=target / "hierarchy.xml",
+        )
+
+
+def _is_positive_finite(value: object) -> bool:
+    return isinstance(value, (int, float)) and not isinstance(value, bool) and value > 0 and isfinite(value)
+
+
+def _validate_human_declared_state(value: object) -> str:
+    if not isinstance(value, str) or value not in HUMAN_DECLARED_STATES:
+        raise SkuPanelDeclaredStateError("必须提供允许的人工声明规格面板状态。")
+    return value
+
+
+def _validate_new_target(target: Path) -> None:
+    if target.exists():
+        raise SkuPanelEvidenceError("输出目录已存在；为防止混入旧证据，拒绝覆盖。")
+    if not target.name:
+        raise SkuPanelEvidenceError("输出目录必须是明确的新目录。")
+
+
+def _clean_staging(staging: Path | None) -> None:
+    if staging is not None and staging.exists():
+        # staging 仅在本次调用中创建，绝不删除调用方已存在的目录。
+        shutil.rmtree(staging)
+
+
+def _require_expected_version(app_info: object) -> str:
+    if not isinstance(app_info, dict):
+        raise SkuPanelVersionMismatchError("拼多多版本与已取证版本不一致，已停止取证。")
+    version = app_info.get("versionName") or app_info.get("version_name")
+    if not isinstance(version, str) or version != EXPECTED_PDD_VERSION:
+        raise SkuPanelVersionMismatchError("拼多多版本与已取证版本不一致，已停止取证。")
+    return version
+
+
+def _require_pdd_foreground(current: object) -> None:
+    if not isinstance(current, dict) or current.get("package") != PDD_PACKAGE:
+        raise SkuPanelPackageMismatchError("当前前台应用不是拼多多，已停止取证。")
+
+
+def _manifest(
+    inspection: DeviceInspection,
+    serial: str,
+    link: ProductUrl,
+    human_declared_state: str,
+    pdd_version: str,
+    screenshot_path: Path,
+    hierarchy_path: Path,
+) -> dict[str, Any]:
+    """仅记录人工声明与非敏感审计摘要，不写入 Activity 或页面内容。"""
+
+    return {
+        "schema_version": 1,
+        "captured_at": datetime.now(UTC).isoformat(),
+        "product": {"goods_id": link.goods_id, "canonical_url": link.canonical_url},
+        "human_declared_state": human_declared_state,
+        "channel": "wifi" if ":" in serial else "usb",
+        "serial_sha256": sha256(serial.encode("utf-8")).hexdigest(),
+        "device": {
+            "model": inspection.model,
+            "android_version": inspection.android_version,
+            "pdd_package": PDD_PACKAGE,
+            "pdd_version": pdd_version,
+        },
+        "artifacts": [
+            {"path": screenshot_path.name, "sha256": _sha256_file(screenshot_path)},
+            {"path": hierarchy_path.name, "sha256": _sha256_file(hierarchy_path)},
+        ],
+    }

client/src/cmbuyer_client/pdd/sku_panel_state.py

@@ -0,0 +1,13 @@
+"""T-103 的人工声明证据状态；不含任何页面识别或规格语义。"""
+
+from __future__ import annotations
+
+
+# 这些值由现场人员填写到 manifest，不能被解释为自动检测出的页面或选择状态。
+HUMAN_DECLARED_STATES = frozenset(
+    {
+        "panel-opened-target-preselected",
+        "alternate-all-dimensions-selected",
+        "target-selection-restored",
+    }
+)

client/src/cmbuyer_client/pdd/sku_selection.py

@@ -0,0 +1,420 @@
+"""T-103：仅限已取证 PDD 8.17.0 的规格面板恢复。"""
+from __future__ import annotations
+
+from dataclasses import dataclass
+import re
+from time import monotonic, sleep
+from typing import Any, Callable, Protocol
+from xml.etree import ElementTree
+
+from ..device.baseline import PDD_PACKAGE
+from .product_open import EXPECTED_PDD_VERSION
+from .product_url import parse_product_url
+
+EXPECTED_GOODS_ID = "937122477375"
+EXPECTED_UNIT_PRICE = "12.88"
+# 任务值不是页面判据；右侧是 v5 取证的唯一 accessibility 文案（空格/全角括号均有意义）。
+TASK_TO_UI_SELECTION = {("黑色CHA(纯棉)", "M(建议100-115)"): ("黑色 CHA (纯棉）", "M（建议100-115）")}
+_TARGET_COLOR_UI, _TARGET_SIZE_UI = next(iter(TASK_TO_UI_SELECTION.values()))
+_ENTRY = "快要抢光"
+_ENTRY_TEXT_BOUNDS = "[900,1312][1056,1355]"
+_ENTRY_INNER_BOUNDS = "[712,1312][1056,1355]"
+_ENTRY_ACTION_BOUNDS = "[0,1256][1080,1355]"
+_SIZE = "尺码"
+_W, _H = 1080, 2376
+_PRICE_PARENT = "[396,498][895,570]"
+_CURRENT = "[396,503][712,570]"
+_ORIGINAL = "[730,503][895,570]"
+_SUMMARY = "[396,654][1053,716]"
+_COLOR_REGION = "[36,1000][1080,1631]"
+_SIZE_LABEL = "[36,1654][114,1700]"
+_SIZE_HEADER = "[36,1637][1044,1718]"
+_SIZE_OPTIONS = "[36,1730][1044,2045]"
+_BOUNDS = re.compile(r"^\[(\d+),(\d+)\]\[(\d+),(\d+)\]$")
+_PRICE = re.compile(r"^[^0-9¥￥]*[¥￥]([1-9][0-9]*\.[0-9]{2})$")
+_ORIGINAL_PRICE = re.compile(r"^[¥￥][1-9][0-9]*\.[0-9]{2}$")
+_BAD_PRICE_ROLE = ("提交订单", "支付", "优惠", "券", "会员", "补贴", "区间", "实付", "到手", "原价", "划线价", "最低", "低至", "起价", "下单", "先用后付", "预估")
+
+
+class SkuSelectionError(RuntimeError):
+    """已取证判据不成立时的脱敏停止。"""
+
+
+class SkuPanelDevice(Protocol):
+    def app_info(self, package_name: str) -> dict[str, Any]: ...
+    def app_current(self) -> dict[str, Any]: ...
+    def dump_window_hierarchy(self) -> str: ...
+    def tap_sku_entry(self, bounds: str) -> None: ...
+    def tap_sku_option(self, bounds: str) -> None: ...
+    def leave_sku_panel(self) -> None: ...
+
+
+@dataclass(frozen=True)
+class SkuSelection:
+    color: str
+    size: str
+
+
+def resolve_task_selection(color: str, size: str) -> SkuSelection:
+    mapped = TASK_TO_UI_SELECTION.get((color, size))
+    if mapped is None:
+        raise SkuSelectionError("规格任务值不是已取证的唯一目标，已停止操作。")
+    return SkuSelection(*mapped)
+
+
+@dataclass(frozen=True)
+class _Node:
+    element: ElementTree.Element
+    parent: "_Node | None"
+    @property
+    def text(self) -> str: return self.element.get("text", "")
+    @property
+    def desc(self) -> str: return self.element.get("content-desc", "")
+    @property
+    def bounds(self) -> str: return self.element.get("bounds", "")
+
+
+class SkuSelectionFlow:
+    def __init__(self, device: SkuPanelDevice, entry_wait_timeout_seconds: float = 0.2,
+                 entry_poll_interval_seconds: float = 0.2, monotonic_clock: Callable[[], float] = monotonic,
+                 sleep_function: Callable[[float], None] = sleep) -> None:
+        if entry_wait_timeout_seconds < 0 or entry_poll_interval_seconds <= 0:
+            raise ValueError("入口等待参数无效。")
+        self._device, self._entry_timeout, self._poll = device, entry_wait_timeout_seconds, entry_poll_interval_seconds
+        self._clock, self._sleep = monotonic_clock, sleep_function
+        self._pending: tuple[str, Callable[[list[_Node]], Any]] | None = None
+
+    def open_sku_panel(self, product_url: str, pre_intent_hierarchy: str | None = None) -> None:
+        if parse_product_url(product_url).goods_id != EXPECTED_GOODS_ID:
+            raise SkuSelectionError("商品不是已取证目标，已停止操作。")
+        if pre_intent_hierarchy is not None:
+            previous_nodes = _parse_nodes(pre_intent_hierarchy)
+            if _eligible_entries(previous_nodes):
+                raise SkuSelectionError("intent 前页面已出现规格入口，已拒绝旧商品误点。")
+        entry, before = self._wait_for_entry(pre_intent_hierarchy)
+        _action_bounds(entry.bounds)
+        self._pending = (before, _panel)
+        self._device.tap_sku_entry(entry.bounds)
+        self._wait_after_action(before, _panel)
+
+    def select_sku_options(self, selection: SkuSelection) -> None:
+        if selection not in {SkuSelection(*item) for item in TASK_TO_UI_SELECTION.values()}:
+            raise SkuSelectionError("规格 UI 文案不是获准目标，已停止操作。")
+        initial = self._verified_nodes()
+        _option(initial, "color", selection.color); _option(initial, "size", selection.size)
+        _selected_label(initial, "color"); _selected_label(initial, "size")
+        self._restore("color", selection.color)
+        self._restore("size", selection.size)
+
+    def read_sku_unit_price(self) -> str:
+        return _unit_price(self._verified_nodes())
+
+    def verify_target_selection_and_read_price(self, selection: SkuSelection) -> str:
+        nodes = self._verified_nodes()
+        _selected(nodes, "color", selection.color)
+        _selected(nodes, "size", selection.size)
+        return _unit_price(nodes)
+
+    def exit_sku_panel_safely(self) -> None:
+        self._require_foreground()
+        before = self._read_hierarchy()
+        _panel(_parse_nodes(before))
+        self._device.leave_sku_panel()
+        deadline = self._clock() + self._entry_timeout
+        while True:
+            self._require_foreground()
+            raw = self._read_hierarchy()
+            if raw != before:
+                try:
+                    _panel(_parse_nodes(raw))
+                except SkuSelectionError:
+                    return
+            remaining = deadline - self._clock()
+            if remaining <= 0:
+                raise SkuSelectionError("安全退出后未确认离开规格面板，未重试返回。")
+            self._sleep(min(self._poll, remaining))
+
+    def reconcile_pending_action(self) -> None:
+        """仅只读调和一次已发出但尚未得到后置条件确认的动作。"""
+        if self._pending is None:
+            return
+        before, condition = self._pending
+        self._wait_after_action(before, condition)
+
+    def _restore(self, dimension: str, expected: str) -> None:
+        self._require_foreground()
+        before = self._read_hierarchy()
+        nodes = _panel(_parse_nodes(before))
+        target = _option(nodes, dimension, expected)
+        if _selected_label(nodes, dimension) == expected:
+            return
+        _action_bounds(target.bounds)
+        condition: Callable[[list[_Node]], Any]
+        if dimension == "color":
+            condition = lambda refreshed: _post_color(refreshed, expected)
+        else:
+            condition = lambda refreshed: _post_all_targets(refreshed, expected)
+        self._pending = (before, condition)
+        self._device.tap_sku_option(target.bounds)
+        if dimension == "color":
+            self._wait_after_action(before, condition)
+        else:
+            self._wait_after_action(before, condition)
+
+    def _wait_for_entry(self, previous: str | None) -> tuple[_Node, str]:
+        deadline, stable = self._clock() + self._entry_timeout, None
+        while True:
+            self._require_version()
+            current = self._device.app_current()
+            if isinstance(current, dict) and current.get("package") == PDD_PACKAGE:
+                raw = self._read_hierarchy()
+                entries = _eligible_entries(_parse_nodes(raw))
+                if len(entries) > 1:
+                    raise SkuSelectionError("商品页规格入口不唯一，已停止操作。")
+                if len(entries) == 1 and raw != previous:
+                    if stable == raw:
+                        return entries[0], raw
+                    stable = raw
+                else:
+                    stable = None
+            else:
+                stable = None
+            remaining = deadline - self._clock()
+            if remaining <= 0:
+                raise SkuSelectionError("等待已取证规格入口超时，未执行点击。")
+            self._sleep(min(self._poll, remaining))
+
+    def _wait_after_action(self, previous: str, condition: Callable[[list[_Node]], Any]) -> list[_Node]:
+        deadline = self._clock() + self._entry_timeout
+        while True:
+            self._require_foreground()
+            raw = self._read_hierarchy()
+            if raw != previous:
+                nodes = _parse_nodes(raw)
+                try:
+                    condition(nodes)
+                    self._pending = None
+                    return nodes
+                except SkuSelectionError:
+                    pass
+            remaining = deadline - self._clock()
+            if remaining <= 0:
+                raise SkuSelectionError("动作后页面未在限定时间内满足已取证后置条件，未重试动作。")
+            self._sleep(min(self._poll, remaining))
+
+    def _verified_nodes(self) -> list[_Node]:
+        self._require_foreground()
+        return _panel(self._read_nodes())
+
+    def _require_version(self) -> None:
+        info = self._device.app_info(PDD_PACKAGE)
+        version = (info.get("versionName") or info.get("version_name")) if isinstance(info, dict) else None
+        if version != EXPECTED_PDD_VERSION:
+            raise SkuSelectionError("拼多多版本与已取证版本不一致，已停止操作。")
+
+    def _require_foreground(self) -> None:
+        self._require_version()
+        current = self._device.app_current()
+        if not isinstance(current, dict) or current.get("package") != PDD_PACKAGE:
+            raise SkuSelectionError("拼多多不在前台，已停止操作。")
+
+    def _read_hierarchy(self) -> str:
+        try: raw = self._device.dump_window_hierarchy()
+        except Exception as error: raise SkuSelectionError("节点树读取失败，已停止操作。") from error
+        if not isinstance(raw, str) or not raw: raise SkuSelectionError("节点树不可用，已停止操作。")
+        return raw
+
+    def _read_nodes(self) -> list[_Node]: return _parse_nodes(self._read_hierarchy())
+
+
+def _parse_nodes(raw: str) -> list[_Node]:
+    try: root = ElementTree.fromstring(raw)
+    except ElementTree.ParseError as error: raise SkuSelectionError("节点树格式无效，已停止操作。") from error
+    if root.tag != "hierarchy": raise SkuSelectionError("节点树根节点无效，已停止操作。")
+    result: list[_Node] = []
+    def visit(element: ElementTree.Element, parent: _Node | None) -> None:
+        node = _Node(element, parent); result.append(node)
+        for child in element: visit(child, node)
+    visit(root, None)
+    return result
+
+
+def _panel(nodes: list[_Node]) -> list[_Node]:
+    parent = _one([n for n in nodes if n.bounds == _PRICE_PARENT], "规格面板价格区域不唯一，已停止操作。")
+    _one([n for n in nodes if n.parent is parent and n.bounds == _ORIGINAL and _readonly(n) and _ORIGINAL_PRICE.fullmatch(n.text)], "规格面板原价槽位不唯一，已停止操作。")
+    _one([n for n in nodes if n.bounds == _SUMMARY and _readonly(n) and n.text.startswith("已选：")], "规格面板已选摘要不唯一，已停止操作。")
+    _color_container(nodes); _size_container(nodes)
+    return nodes
+
+
+def _unit_price(nodes: list[_Node]) -> str:
+    parent = _one([n for n in nodes if n.bounds == _PRICE_PARENT], "规格面板价格区域不唯一，已停止读取。")
+    money = [n for n in nodes if n.parent is parent and _readonly(n) and any(mark in n.text for mark in "¥￥")]
+    if len(money) != 2: raise SkuSelectionError("规格面板金额槽位不唯一，已停止读取。")
+    current = _one([n for n in money if n.bounds == _CURRENT and not _clickable_ancestor(n) and not any(word in n.text for word in _BAD_PRICE_ROLE) and _PRICE.fullmatch(n.text)], "规格面板现价不唯一或不符合已取证槽位，已停止读取。")
+    if not any(n.bounds == _ORIGINAL and _ORIGINAL_PRICE.fullmatch(n.text) for n in money):
+        raise SkuSelectionError("规格面板原价槽位无效，已停止读取。")
+    match = _PRICE.fullmatch(current.text)
+    if match is None: raise SkuSelectionError("规格面板现价格式失效，已停止读取。")
+    return match.group(1)
+
+
+def _option(nodes: list[_Node], dimension: str, expected: str) -> _Node:
+    _panel(nodes)
+    return _one([n for n in _options(nodes, dimension) if _label(n) == expected], "规格选项不唯一或不是精确匹配，已停止操作。")
+
+
+def _selected(nodes: list[_Node], dimension: str, expected: str) -> None:
+    if _selected_label(nodes, dimension) != expected:
+        raise SkuSelectionError("规格选择后读回的 selected 文案不一致，已停止操作。")
+
+
+def _selected_label(nodes: list[_Node], dimension: str) -> str:
+    selected = [n for n in _options(nodes, dimension) if n.element.get("selected") == "true"]
+    label = _label(_one(selected, "规格维度没有唯一 selected 状态，已停止操作。"))
+    if label is None: raise SkuSelectionError("规格维度 selected 文案无效，已停止操作。")
+    return label
+
+
+def _post_color(nodes: list[_Node], expected: str) -> None:
+    _panel(nodes)
+    _selected(nodes, "color", expected)
+    _selected_label(nodes, "size")
+
+
+def _post_all_targets(nodes: list[_Node], expected_size: str) -> None:
+    _panel(nodes)
+    _selected(nodes, "color", _TARGET_COLOR_UI)
+    _selected(nodes, "size", expected_size)
+
+
+def _options(nodes: list[_Node], dimension: str) -> list[_Node]:
+    container = _color_container(nodes) if dimension == "color" else _size_container(nodes) if dimension == "size" else None
+    if container is None: raise SkuSelectionError("未知规格维度，已停止操作。")
+    candidates = [n for n in nodes if _descendant(n, container) and _contained(n, container) and _choice(n) and _label(n) is not None]
+    return [n for n in candidates if not _labeled_ancestor(n, candidates)]
+
+
+def _color_container(nodes: list[_Node]) -> _Node:
+    return _one([n for n in nodes if n.element.get("package") == PDD_PACKAGE and n.element.get("class") == "androidx.recyclerview.widget.RecyclerView" and n.bounds == _COLOR_REGION], "规格面板颜色容器不唯一，已停止操作。")
+
+
+def _size_container(nodes: list[_Node]) -> _Node:
+    label = _one([n for n in nodes if n.text == _SIZE and n.bounds == _SIZE_LABEL and _readonly(n)], "规格面板尺码标签不唯一，已停止操作。")
+    header = label.parent
+    if header is None or header.element.get("package") != PDD_PACKAGE or header.element.get("class") != "android.widget.LinearLayout" or header.bounds != _SIZE_HEADER or header.parent is None:
+        raise SkuSelectionError("规格面板尺码标题容器不符合已取证结构，已停止操作。")
+    return _one([n for n in nodes if n.parent is header.parent and n.element.get("package") == PDD_PACKAGE and n.element.get("class") == "android.widget.LinearLayout" and n.bounds == _SIZE_OPTIONS], "规格面板尺码选项容器不唯一，已停止操作。")
+
+
+def _label(node: _Node) -> str | None:
+    values = {value for value in (node.text, node.desc) if value}
+    return values.pop() if len(values) == 1 else None
+
+
+def _labeled_ancestor(node: _Node, candidates: list[_Node]) -> bool:
+    ids, parent = {id(n.element) for n in candidates}, node.parent
+    while parent is not None:
+        if id(parent.element) in ids and _label(parent) is not None: return True
+        parent = parent.parent
+    return False
+
+
+def _descendant(node: _Node, ancestor: _Node) -> bool:
+    parent = node.parent
+    while parent is not None:
+        if parent.element is ancestor.element: return True
+        parent = parent.parent
+    return False
+
+
+def _contained(node: _Node, container: _Node) -> bool:
+    left, top, right, bottom = _action_bounds(node.bounds)
+    outer_left, outer_top, outer_right, outer_bottom = _action_bounds(container.bounds)
+    return outer_left <= left < right <= outer_right and outer_top <= top < bottom <= outer_bottom
+
+
+def _clickable_ancestor(node: _Node) -> bool:
+    parent = node.parent
+    while parent is not None:
+        if parent.element.get("clickable") == "true": return True
+        parent = parent.parent
+    return False
+
+
+def _readonly(node: _Node) -> bool:
+    return node.element.get("package") == PDD_PACKAGE and node.element.get("class") == "android.widget.TextView" and node.element.get("clickable") == "false" and node.element.get("enabled") == "true" and node.element.get("visible-to-user") == "true"
+
+
+def _live(node: _Node) -> bool:
+    return node.element.get("package") == PDD_PACKAGE and node.element.get("clickable") == "true" and node.element.get("enabled") == "true" and node.element.get("visible-to-user") == "true" and bool(node.bounds)
+
+
+def _choice(node: _Node) -> bool:
+    return _live(node) and node.element.get("class") == "android.view.ViewGroup" and node.element.get("selected") in {"true", "false"}
+
+
+def _eligible_entries(nodes: list[_Node]) -> list[_Node]:
+    # 入口文本本身不可点击：必须逐层证明它仍位于已取证的唯一可点击祖先中，但动作坐标继续
+    # 使用文本子节点的窄 bounds，避免把同一祖先内未知区域变成坐标兜底。“免拼购买”等底部
+    # 容器既不属于这条祖先链，也绝不能作为替代入口。
+    if any(node.bounds == _PRICE_PARENT for node in nodes): return []
+    entry_labels = [
+        node for node in nodes
+        if node.text == _ENTRY
+        and node.element.get("package") == PDD_PACKAGE
+        and node.element.get("class") == "android.widget.TextView"
+    ]
+    if len(entry_labels) != 1:
+        return entry_labels
+    action_ancestors = [
+        node for node in nodes
+        if _exact_entry_node(node, "android.view.ViewGroup", _ENTRY_ACTION_BOUNDS, "true")
+    ]
+    if len(action_ancestors) != 1:
+        return []
+    action_ancestor = action_ancestors[0]
+    entries: list[_Node] = []
+    for node in entry_labels:
+        if not _exact_entry_node(node, "android.widget.TextView", _ENTRY_TEXT_BOUNDS, "false"):
+            return []
+        inner = node.parent
+        switcher = inner.parent if inner is not None else None
+        frame = switcher.parent if switcher is not None else None
+        ancestor = frame.parent if frame is not None else None
+        if (
+            inner is not None
+            and _exact_entry_node(inner, "android.view.ViewGroup", _ENTRY_INNER_BOUNDS, "false")
+            and switcher is not None
+            and _exact_entry_node(switcher, "android.widget.ViewSwitcher", _ENTRY_INNER_BOUNDS, "false")
+            and frame is not None
+            and _exact_entry_node(frame, "android.widget.FrameLayout", _ENTRY_INNER_BOUNDS, "false")
+            and ancestor is action_ancestor
+        ):
+            entries.append(node)
+    return entries
+
+
+def _exact_entry_node(node: _Node, class_name: str, bounds: str, clickable: str) -> bool:
+    return (
+        node.element.get("package") == PDD_PACKAGE
+        and node.element.get("class") == class_name
+        and node.bounds == bounds
+        and node.element.get("clickable") == clickable
+        and node.element.get("enabled") == "true"
+        and node.element.get("visible-to-user") == "true"
+    )
+
+
+def _action_bounds(bounds: str) -> tuple[int, int, int, int]:
+    match = _BOUNDS.fullmatch(bounds)
+    if match is None: raise SkuSelectionError("规格节点坐标格式无效，已停止操作。")
+    left, top, right, bottom = (int(item) for item in match.groups())
+    if not (0 <= left < right <= _W and 0 <= top < bottom <= _H):
+        raise SkuSelectionError("规格节点坐标不在已取证屏幕范围内，已停止操作。")
+    return left, top, right, bottom
+
+
+def _one(nodes: list[_Node], message: str) -> _Node:
+    if len(nodes) != 1: raise SkuSelectionError(message)
+    return nodes[0]

client/src/cmbuyer_client/pdd/sku_selection_runner.py

@@ -0,0 +1,348 @@
+"""T-103 真机运行边界：窄适配器、原始截图和无页面正文的摘要。"""
+
+from __future__ import annotations
+
+from collections.abc import Callable
+from dataclasses import dataclass
+from datetime import UTC, datetime
+from hashlib import sha256
+import json
+from math import isfinite
+import os
+from pathlib import Path
+import shutil
+from time import monotonic
+from typing import Any
+from uuid import uuid4
+
+from PIL import Image, UnidentifiedImageError
+
+from adbutils.errors import AdbTimeout
+from uiautomator2.exceptions import HTTPTimeoutError
+
+from ..device.adb import AdbClient, DeviceConnectionError, DeviceInspection
+from ..device.baseline import PDD_PACKAGE, SCREENSHOT_PARAMS, _save_base64_screenshot, _sha256_file
+from .product_open import EXPECTED_PDD_VERSION
+from .product_url import ProductUrl, parse_product_url
+from .sku_selection import (
+    EXPECTED_GOODS_ID,
+    EXPECTED_UNIT_PRICE,
+    SkuPanelDevice,
+    SkuSelectionError,
+    SkuSelectionFlow,
+    _action_bounds,
+    resolve_task_selection,
+)
+
+
+EXPECTED_DEVICE_MODEL = "PKG110"
+EXPECTED_ANDROID_VERSION = "16"
+EXPECTED_SCREEN_SIZE = (1080, 2376)
+
+
+class SkuSelectionRunError(RuntimeError):
+    """T-103 运行未完整完成；错误文本不携带设备或页面原文。"""
+
+
+class SkuSelectionRunTimeoutError(SkuSelectionRunError):
+    """设备 RPC 或操作超时。"""
+
+
+class SkuSelectionScreenshotError(SkuSelectionRunError):
+    """原始截图无法作为完整 PNG 原子发布。"""
+
+
+class SkuSelectionUnexpectedPriceError(SkuSelectionRunError):
+    """取证面板现价不是本任务已确认值。"""
+
+
+class SkuSelectionDeviceAdapterError(SkuSelectionRunError):
+    """第三方设备接口失败的脱敏映射。"""
+
+
+@dataclass(frozen=True)
+class SkuSelectionRunResult:
+    """已发布的截图和无页面正文 manifest 摘要。"""
+
+    output_directory: Path
+    screenshot_path: Path
+    manifest_path: Path
+    unit_price: str
+
+
+class UiautomatorSkuPanelAdapter(SkuPanelDevice):
+    """把 uiautomator2 缩为 T-103 所需的读取与三种命名操作。
+
+    ``tap_sku_entry``、``tap_sku_option`` 和 ``leave_sku_panel`` 是仅有的状态改变方法；
+    坐标由 Flow 和本类双重检查后才计算中心点，每次调用只执行一次底层动作。
+    """
+
+    def __init__(self, device: Any, timeout_seconds: float) -> None:
+        if not _is_positive_finite(timeout_seconds):
+            raise ValueError("timeout_seconds 必须是大于 0 的有限数值")
+        self._device = device
+        self._timeout_seconds = timeout_seconds
+        self._entry_was_tapped = False
+        self._left_panel = False
+
+    @property
+    def entry_was_tapped(self) -> bool:
+        """仅供运行器决定故障后的单次尽力返回，不是页面操作。"""
+
+        return self._entry_was_tapped
+
+    @property
+    def left_panel(self) -> bool:
+        return self._left_panel
+
+    def app_info(self, package_name: str) -> dict[str, Any]:
+        value = self._call("app_info", package_name)
+        if not isinstance(value, dict):
+            raise SkuSelectionDeviceAdapterError("无法读取应用版本，已停止操作。")
+        return value
+
+    def app_current(self) -> dict[str, Any]:
+        value = self._call("app_current")
+        if not isinstance(value, dict):
+            raise SkuSelectionDeviceAdapterError("无法读取前台应用，已停止操作。")
+        return value
+
+    def dump_window_hierarchy(self) -> str:
+        value = self._call("jsonrpc_call", "dumpWindowHierarchy", [False, 50], timeout=self._timeout_seconds)
+        if not isinstance(value, str):
+            raise SkuSelectionDeviceAdapterError("节点树读取失败，已停止操作。")
+        return value
+
+    def tap_sku_entry(self, bounds: str) -> None:
+        # 超时也可能表示底层事件已经送达；必须先封存 attempt，后续绝不重试该入口。
+        self._entry_was_tapped = True
+        self._tap_bounds_once(bounds)
+
+    def tap_sku_option(self, bounds: str) -> None:
+        self._tap_bounds_once(bounds)
+
+    def leave_sku_panel(self) -> None:
+        if self._left_panel:
+            raise SkuSelectionDeviceAdapterError("规格面板已经执行过返回，已停止操作。")
+        # 底层调用即使报错也可能已把返回事件送达；先封存本次机会，finally 不得再次返回。
+        self._left_panel = True
+        self._call("jsonrpc_call", "pressKey", ["back"], timeout=self._timeout_seconds)
+
+    def capture_screenshot(self) -> str:
+        value = self._call("jsonrpc_call", "takeScreenshot", SCREENSHOT_PARAMS, timeout=self._timeout_seconds)
+        if not isinstance(value, str):
+            raise SkuSelectionScreenshotError("规格面板原始截图读取失败，未发布任何证据产物。")
+        return value
+
+    def display_size(self) -> tuple[int, int]:
+        value = self._call("window_size")
+        if not isinstance(value, tuple) or len(value) != 2 or any(not isinstance(item, int) for item in value):
+            raise SkuSelectionDeviceAdapterError("无法读取屏幕坐标空间，已停止操作。")
+        return value
+
+    def _tap_bounds_once(self, bounds: str) -> None:
+        left, top, right, bottom = _action_bounds(bounds)
+        center_x = left + (right - left) // 2
+        center_y = top + (bottom - top) // 2
+        self._call("jsonrpc_call", "click", [center_x, center_y], timeout=self._timeout_seconds)
+
+    def _call(self, method: str, *args: Any, **kwargs: Any) -> Any:
+        try:
+            operation = getattr(self._device, method)
+            return operation(*args, **kwargs)
+        except (AdbTimeout, HTTPTimeoutError, TimeoutError) as error:
+            raise SkuSelectionRunTimeoutError("规格面板设备操作超时，已停止操作。") from error
+        except SkuSelectionRunError:
+            raise
+        except Exception as error:
+            raise SkuSelectionDeviceAdapterError("规格面板设备操作失败，已停止操作。") from error
+
+
+class SkuSelectionRunner:
+    """只运行 T-103 目标规格恢复、价格确认、原始截图和一次安全退出。"""
+
+    def __init__(
+        self,
+        adb_client: AdbClient,
+        connector: Callable[[str], Any],
+        timeout_seconds: float,
+        monotonic_clock: Callable[[], float] = monotonic,
+    ) -> None:
+        if not _is_positive_finite(timeout_seconds):
+            raise ValueError("timeout_seconds 必须是大于 0 的有限数值")
+        self._adb_client = adb_client
+        self._connector = connector
+        self._timeout_seconds = timeout_seconds
+        self._monotonic_clock = monotonic_clock
+
+    def run(
+        self,
+        serial: str,
+        product_url: str,
+        task_color: str,
+        task_size: str,
+        output_directory: Path,
+    ) -> SkuSelectionRunResult:
+        link = parse_product_url(product_url)
+        if link.goods_id != EXPECTED_GOODS_ID:
+            raise SkuSelectionRunError("商品不是 T-103 已取证目标，已停止操作。")
+        selection = resolve_task_selection(task_color, task_size)
+        target = Path(output_directory)
+        _validate_new_target(target)
+
+        adapter: UiautomatorSkuPanelAdapter | None = None
+        flow: SkuSelectionFlow | None = None
+        staging = _prepare_staging(target)
+        deadline = self._monotonic_clock() + self._timeout_seconds
+        try:
+            inspection = self._adb_client.inspect(serial)
+            _require_expected_device(inspection)
+            adapter = UiautomatorSkuPanelAdapter(self._connector(serial), self._timeout_seconds)
+            _require_expected_version(adapter.app_info(PDD_PACKAGE))
+            if adapter.display_size() != EXPECTED_SCREEN_SIZE:
+                raise SkuSelectionRunError("设备不是已取证的竖屏坐标空间，已停止操作。")
+            pre_intent_hierarchy = adapter.dump_window_hierarchy()
+            # 固定 ACTION_VIEW、固定 PDD package 和 canonical goods_id；不接受任意 URL 或 shell。
+            self._adb_client.start_pdd_view_intent(serial, link.goods_id)
+
+            remaining = deadline - self._monotonic_clock()
+            if remaining <= 0:
+                raise SkuSelectionRunTimeoutError("等待规格入口超时，未执行点击。")
+            flow = SkuSelectionFlow(adapter, entry_wait_timeout_seconds=remaining)
+            flow.open_sku_panel(link.canonical_url, pre_intent_hierarchy)
+            flow.select_sku_options(selection)
+            unit_price = flow.verify_target_selection_and_read_price(selection)
+            if unit_price != EXPECTED_UNIT_PRICE:
+                raise SkuSelectionUnexpectedPriceError("规格面板现价不是本任务已确认值，已停止操作。")
+
+            screenshot_path = staging / "screenshot.png"
+            try:
+                _save_base64_screenshot(adapter.capture_screenshot(), screenshot_path)
+                _require_screenshot_size(screenshot_path)
+            except SkuSelectionRunError:
+                raise
+            except Exception as error:
+                raise SkuSelectionScreenshotError("规格面板原始截图保存失败，未发布任何证据产物。") from error
+
+            manifest_path = staging / "manifest.json"
+            # 截图可能落在动态页面切换边界；发布前必须用一棵更新节点树同时重证两维和现价。
+            final_price = flow.verify_target_selection_and_read_price(selection)
+            if final_price != EXPECTED_UNIT_PRICE:
+                raise SkuSelectionUnexpectedPriceError("截图后规格面板现价不是本任务已确认值，已停止操作。")
+            # 正常路径仍经 Flow 做最后一次前台和面板判定；返回操作只发生一次。
+            flow.exit_sku_panel_safely()
+            manifest_path.write_text(
+                json.dumps(_manifest(inspection, serial, link, screenshot_path, task_color, task_size), ensure_ascii=False, indent=2, sort_keys=True) + "\n",
+                encoding="utf-8",
+            )
+            # Windows 的 rename 不替换既有目标；并发创建 target 时保留其内容并把本次运行判失败。
+            os.rename(staging, target)
+            staging = None
+        except (DeviceConnectionError, SkuSelectionRunError, SkuSelectionError):
+            _clean_staging(staging)
+            raise
+        except (AdbTimeout, HTTPTimeoutError, TimeoutError) as error:
+            _clean_staging(staging)
+            raise SkuSelectionRunTimeoutError("规格面板运行超时，未发布任何证据产物。") from error
+        except OSError as error:
+            _clean_staging(staging)
+            raise SkuSelectionRunError("规格面板证据目录无法创建或发布，未发布任何证据产物。") from error
+        except Exception as error:
+            _clean_staging(staging)
+            raise SkuSelectionRunError("规格面板运行未完成，未发布任何证据产物。") from error
+        finally:
+            # 失败路径只能复用 Flow 的版本、前台和面板证明；证明不了便停止，绝不盲目返回。
+            if flow is not None and adapter is not None and adapter.entry_was_tapped and not adapter.left_panel:
+                try:
+                    flow.reconcile_pending_action()
+                    flow.exit_sku_panel_safely()
+                except (SkuSelectionRunError, SkuSelectionError):
+                    pass
+
+        return SkuSelectionRunResult(
+            output_directory=target,
+            screenshot_path=target / "screenshot.png",
+            manifest_path=target / "manifest.json",
+            unit_price=EXPECTED_UNIT_PRICE,
+        )
+
+
+def _is_positive_finite(value: object) -> bool:
+    return isinstance(value, (int, float)) and not isinstance(value, bool) and value > 0 and isfinite(value)
+
+
+def _validate_new_target(target: Path) -> None:
+    if target.exists():
+        raise SkuSelectionRunError("输出目录已存在；为防止覆盖旧证据，已停止操作。")
+    if not target.name:
+        raise SkuSelectionRunError("输出目录必须是明确的新目录。")
+
+
+def _prepare_staging(target: Path) -> Path:
+    staging: Path | None = None
+    try:
+        target.parent.mkdir(parents=True, exist_ok=True)
+        staging = target.parent / f".{target.name}.staging-{uuid4().hex}"
+        staging.mkdir()
+        probe = staging / ".write-probe"
+        probe.write_bytes(b"ok")
+        probe.unlink()
+        return staging
+    except OSError as error:
+        _clean_staging(staging)
+        raise SkuSelectionRunError("输出目录不可写，已停止操作。") from error
+
+
+def _clean_staging(staging: Path | None) -> None:
+    if staging is not None and staging.exists():
+        shutil.rmtree(staging)
+
+
+def _require_expected_version(app_info: object) -> str:
+    version = (app_info.get("versionName") or app_info.get("version_name")) if isinstance(app_info, dict) else None
+    if version != EXPECTED_PDD_VERSION:
+        raise SkuSelectionRunError("拼多多版本与已取证版本不一致，已停止操作。")
+    return version
+
+
+def _require_expected_device(inspection: DeviceInspection) -> None:
+    if inspection.model != EXPECTED_DEVICE_MODEL or inspection.android_version != EXPECTED_ANDROID_VERSION:
+        raise SkuSelectionRunError("设备型号或 Android 版本不是已取证组合，已停止操作。")
+
+
+def _require_screenshot_size(screenshot_path: Path) -> None:
+    try:
+        with Image.open(screenshot_path) as image:
+            image.load()
+            if image.size != EXPECTED_SCREEN_SIZE:
+                raise SkuSelectionScreenshotError("原始截图坐标空间不是已取证尺寸，未发布任何证据产物。")
+    except SkuSelectionRunError:
+        raise
+    except (UnidentifiedImageError, OSError) as error:
+        raise SkuSelectionScreenshotError("原始截图无效，未发布任何证据产物。") from error
+
+
+def _manifest(inspection: DeviceInspection, serial: str, link: ProductUrl, screenshot_path: Path, task_color: str, task_size: str) -> dict[str, Any]:
+    """仅写可审计摘要；原始 serial、节点树、页面文案和实际截图内容均不写入 manifest。"""
+
+    return {
+        "schema_version": 1,
+        "captured_at": datetime.now(UTC).isoformat(),
+        "operation": "t103-sku-selection",
+        "product": {"goods_id": link.goods_id, "canonical_url": link.canonical_url},
+        "target_selection": {"color": task_color, "size": task_size},
+        "unit_price": EXPECTED_UNIT_PRICE,
+        "selection_status": "restored",
+        "panel_status": "verified",
+        "safe_exit": "completed",
+        "page_identity": "human_review_required",
+        "channel": "wifi" if ":" in serial else "usb",
+        "serial_sha256": sha256(serial.encode("utf-8")).hexdigest(),
+        "device": {
+            "model": inspection.model,
+            "android_version": inspection.android_version,
+            "pdd_package": PDD_PACKAGE,
+            "pdd_version": EXPECTED_PDD_VERSION,
+        },
+        "artifacts": [{"path": screenshot_path.name, "sha256": _sha256_file(screenshot_path)}],
+    }

client/src/cmbuyer_client/runtime.py

@@ -0,0 +1,42 @@
+"""采购工具的本地运行目录策略。"""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+import os
+from pathlib import Path
+
+
+@dataclass(frozen=True)
+class RuntimePaths:
+    """仅包含应用生成物的本地目录。
+
+    日志和证据产物不落在源码树中，避免把含有现场信息的运行数据误提交到 Git。
+    """
+
+    root: Path
+    logs: Path
+    artifacts: Path
+
+    @classmethod
+    def from_root(cls, root: Path) -> "RuntimePaths":
+        resolved_root = root.expanduser()
+        return cls(
+            root=resolved_root,
+            logs=resolved_root / "logs",
+            artifacts=resolved_root / "artifacts",
+        )
+
+    @classmethod
+    def default(cls) -> "RuntimePaths":
+        local_app_data = os.environ.get("LOCALAPPDATA")
+        if local_app_data:
+            return cls.from_root(Path(local_app_data) / "cmbuyer")
+
+        return cls.from_root(Path.home() / ".local" / "share" / "cmbuyer")
+
+    def ensure_exists(self) -> None:
+        """创建运行目录；调用方负责向用户呈现无法创建目录的错误。"""
+
+        self.logs.mkdir(parents=True, exist_ok=True)
+        self.artifacts.mkdir(parents=True, exist_ok=True)

client/tests/__init__.py

@@ -0,0 +1 @@
+"""采购工具的离线单元测试。"""

client/tests/device/__init__.py

@@ -0,0 +1 @@
+"""设备连接与基线取证的离线测试。"""

client/tests/device/test_adb.py

@@ -0,0 +1,273 @@
+"""ADB 设备边界测试：所有命令执行器均为 mock，不连接真机。"""
+
+from __future__ import annotations
+
+from collections.abc import Sequence
+from pathlib import Path
+import subprocess
+import sys
+import unittest
+
+
+CLIENT_ROOT = Path(__file__).resolve().parents[2]
+sys.path.insert(0, str(CLIENT_ROOT / "src"))
+
+from cmbuyer_client.device.adb import (
+    AdbClient,
+    CommandResult,
+    DeviceIdentityUnconfirmedError,
+    DeviceCommandError,
+    DeviceCommandTimeoutError,
+    DeviceNotFoundError,
+    DeviceOfflineError,
+    DeviceStateError,
+    DeviceUnauthorizedError,
+    DuplicatePhysicalDeviceError,
+    IntentLaunchUnconfirmedError,
+    SerialRequiredError,
+)
+
+
+USB_SERIAL = "3B65BD02H7F00000"
+WIFI_SERIAL = "192.168.0.173:5555"
+
+
+class FakeRunner:
+    def __init__(self, devices_output: str, properties: dict[tuple[str, str], CommandResult | str]) -> None:
+        self.devices_output = devices_output
+        self.properties = properties
+        self.calls: list[tuple[str, ...]] = []
+
+    def run(self, arguments: Sequence[str], timeout_seconds: float) -> CommandResult:
+        self.calls.append(tuple(arguments))
+        if tuple(arguments) == ("devices", "-l"):
+            return CommandResult(stdout=self.devices_output)
+        key = (arguments[1], arguments[-1])
+        value = self.properties.get(key, "")
+        return value if isinstance(value, CommandResult) else CommandResult(stdout=value)
+
+
+def _properties(serials: tuple[str, ...]) -> dict[tuple[str, str], str]:
+    values: dict[tuple[str, str], str] = {}
+    for serial in serials:
+        values[(serial, "ro.serialno")] = "physical-phone-1"
+        values[(serial, "ro.boot.serialno")] = "physical-phone-1"
+        values[(serial, "ro.product.model")] = "PKG110"
+        values[(serial, "ro.product.name")] = "PKG110"
+        values[(serial, "ro.product.device")] = "OP5D2BL1"
+        values[(serial, "ro.build.version.release")] = "16"
+    return values
+
+
+class AdbClientTests(unittest.TestCase):
+    def test_requires_explicit_serial(self) -> None:
+        runner = FakeRunner("List of devices attached\n", {})
+
+        with self.assertRaises(SerialRequiredError):
+            AdbClient(runner).inspect("   ")
+
+        self.assertEqual(runner.calls, [])
+
+    def test_missing_offline_and_unauthorized_are_distinct(self) -> None:
+        missing = AdbClient(FakeRunner("List of devices attached\n", {}))
+        with self.assertRaises(DeviceNotFoundError):
+            missing.inspect(USB_SERIAL)
+
+        offline = AdbClient(FakeRunner(f"List of devices attached\n{USB_SERIAL}\toffline\n", {}))
+        with self.assertRaises(DeviceOfflineError):
+            offline.inspect(USB_SERIAL)
+
+        unauthorized = AdbClient(FakeRunner(f"List of devices attached\n{USB_SERIAL}\tunauthorized\n", {}))
+        with self.assertRaises(DeviceUnauthorizedError):
+            unauthorized.inspect(USB_SERIAL)
+
+    def test_two_channels_with_same_physical_identity_fail_closed(self) -> None:
+        output = (
+            "List of devices attached\n"
+            f"{WIFI_SERIAL}\tdevice product:PKG110 model:PKG110 device:OP5D2BL1\n"
+            f"{USB_SERIAL}\tdevice product:PKG110 model:PKG110 device:OP5D2BL1\n"
+        )
+        runner = FakeRunner(output, _properties((WIFI_SERIAL, USB_SERIAL)))
+
+        with self.assertRaises(DuplicatePhysicalDeviceError):
+            AdbClient(runner).inspect(USB_SERIAL)
+
+        self.assertIn(("-s", WIFI_SERIAL, "shell", "getprop", "ro.serialno"), runner.calls)
+        self.assertIn(("-s", USB_SERIAL, "shell", "getprop", "ro.serialno"), runner.calls)
+
+    def test_multiple_online_devices_with_failed_identity_fail_closed(self) -> None:
+        output = (
+            "List of devices attached\n"
+            f"{WIFI_SERIAL}\tdevice product:PKG110 model:PKG110 device:OP5D2BL1\n"
+            f"{USB_SERIAL}\tdevice product:PKG110 model:PKG110 device:OP5D2BL1\n"
+        )
+        properties = _properties((WIFI_SERIAL, USB_SERIAL))
+        properties[(WIFI_SERIAL, "ro.serialno")] = CommandResult(stdout="", returncode=1)
+        runner = FakeRunner(output, properties)
+
+        with self.assertRaises(DeviceIdentityUnconfirmedError):
+            AdbClient(runner).inspect(USB_SERIAL)
+
+    def test_online_explicit_serial_reads_non_sensitive_metadata(self) -> None:
+        output = f"List of devices attached\n{USB_SERIAL}\tdevice product:PKG110 model:PKG110 device:OP5D2BL1\n"
+        inspection = AdbClient(FakeRunner(output, _properties((USB_SERIAL,)))).inspect(USB_SERIAL)
+
+        self.assertEqual(inspection.device.serial, USB_SERIAL)
+        self.assertEqual(inspection.model, "PKG110")
+        self.assertEqual(inspection.android_version, "16")
+
+    def test_single_online_device_does_not_require_hardware_identity(self) -> None:
+        output = f"List of devices attached\n{USB_SERIAL}\tdevice product:PKG110 model:PKG110 device:OP5D2BL1\n"
+        properties = _properties((USB_SERIAL,))
+        properties[(USB_SERIAL, "ro.serialno")] = ""
+        properties[(USB_SERIAL, "ro.boot.serialno")] = ""
+
+        inspection = AdbClient(FakeRunner(output, properties)).inspect(USB_SERIAL)
+
+        self.assertEqual(inspection.model, "PKG110")
+
+    def test_multiple_online_devices_without_hardware_identity_are_unconfirmed(self) -> None:
+        output = (
+            "List of devices attached\n"
+            f"{WIFI_SERIAL}\tdevice product:PKG110 model:PKG110 device:OP5D2BL1\n"
+            f"{USB_SERIAL}\tdevice product:PKG110 model:PKG110 device:OP5D2BL1\n"
+        )
+        properties = _properties((WIFI_SERIAL, USB_SERIAL))
+        properties[(WIFI_SERIAL, "ro.serialno")] = ""
+        properties[(WIFI_SERIAL, "ro.boot.serialno")] = ""
+
+        with self.assertRaises(DeviceIdentityUnconfirmedError):
+            AdbClient(FakeRunner(output, properties)).inspect(USB_SERIAL)
+
+    def test_multiple_online_devices_with_different_identity_keep_explicit_selection(self) -> None:
+        output = (
+            "List of devices attached\n"
+            f"{WIFI_SERIAL}\tdevice product:PKG110 model:PKG110 device:OP5D2BL1\n"
+            f"{USB_SERIAL}\tdevice product:PKG110 model:PKG110 device:OP5D2BL1\n"
+        )
+        properties = _properties((WIFI_SERIAL, USB_SERIAL))
+        properties[(WIFI_SERIAL, "ro.serialno")] = "physical-phone-2"
+        properties[(WIFI_SERIAL, "ro.boot.serialno")] = "physical-phone-2"
+
+        inspection = AdbClient(FakeRunner(output, properties)).inspect(USB_SERIAL)
+
+        self.assertEqual(inspection.device.serial, USB_SERIAL)
+
+    def test_shared_boot_serial_is_duplicate_even_when_ro_serial_differs(self) -> None:
+        output = (
+            "List of devices attached\n"
+            f"{WIFI_SERIAL}\tdevice product:PKG110 model:PKG110 device:OP5D2BL1\n"
+            f"{USB_SERIAL}\tdevice product:PKG110 model:PKG110 device:OP5D2BL1\n"
+        )
+        properties = _properties((WIFI_SERIAL, USB_SERIAL))
+        properties[(WIFI_SERIAL, "ro.serialno")] = "wifi-transport-serial"
+        properties[(USB_SERIAL, "ro.serialno")] = "usb-transport-serial"
+        properties[(WIFI_SERIAL, "ro.boot.serialno")] = "shared-hardware-serial"
+        properties[(USB_SERIAL, "ro.boot.serialno")] = "shared-hardware-serial"
+
+        with self.assertRaises(DuplicatePhysicalDeviceError):
+            AdbClient(FakeRunner(output, properties)).inspect(USB_SERIAL)
+
+    def test_unknown_adb_state_is_rejected(self) -> None:
+        client = AdbClient(FakeRunner(f"List of devices attached\n{USB_SERIAL}\trecovery\n", {}))
+
+        with self.assertRaises(DeviceStateError):
+            client.inspect(USB_SERIAL)
+
+    def test_runner_timeout_is_a_distinct_connection_error(self) -> None:
+        class TimeoutRunner:
+            def run(self, arguments: Sequence[str], timeout_seconds: float) -> CommandResult:
+                raise subprocess.TimeoutExpired(arguments, timeout_seconds)
+
+        with self.assertRaises(DeviceCommandTimeoutError):
+            AdbClient(TimeoutRunner()).inspect(USB_SERIAL)
+
+    def test_product_intent_is_fixed_to_action_view_and_pdd_package(self) -> None:
+        class IntentRunner:
+            def __init__(self) -> None:
+                self.calls: list[tuple[str, ...]] = []
+
+            def run(self, arguments: Sequence[str], timeout_seconds: float) -> CommandResult:
+                self.calls.append(tuple(arguments))
+                return CommandResult(stdout="Status: ok\n")
+
+        runner = IntentRunner()
+        summary = AdbClient(runner).start_pdd_view_intent(
+            USB_SERIAL,
+            "123",
+        )
+
+        self.assertEqual(summary.status, "ok")
+        self.assertEqual(
+            runner.calls,
+            [
+                (
+                    "-s",
+                    USB_SERIAL,
+                    "shell",
+                    "am",
+                    "start",
+                    "-W",
+                    "-a",
+                    "android.intent.action.VIEW",
+                    "-d",
+                    "https://mobile.yangkeduo.com/goods.html?goods_id=123",
+                    "-p",
+                    "com.xunmeng.pinduoduo",
+                )
+            ],
+        )
+
+    def test_product_intent_without_explicit_success_is_rejected(self) -> None:
+        class UnknownIntentRunner:
+            def run(self, arguments: Sequence[str], timeout_seconds: float) -> CommandResult:
+                return CommandResult(stdout="Starting: Intent { ... }\n")
+
+        with self.assertRaises(IntentLaunchUnconfirmedError):
+            AdbClient(UnknownIntentRunner()).start_pdd_view_intent(
+                USB_SERIAL,
+                "123",
+            )
+
+    def test_product_intent_rejects_invalid_goods_id_before_runner(self) -> None:
+        class RecordingRunner:
+            def __init__(self) -> None:
+                self.calls: list[tuple[str, ...]] = []
+
+            def run(self, arguments: Sequence[str], timeout_seconds: float) -> CommandResult:
+                self.calls.append(tuple(arguments))
+                return CommandResult(stdout="Status: ok\n")
+
+        invalid_values: tuple[object, ...] = (
+            "",
+            "12a",
+            "１２３",
+            " 123",
+            "123 ",
+            "https://mobile.yangkeduo.com/goods.html?goods_id=123",
+            "am start -W -d anything",
+            123,
+            None,
+        )
+        for value in invalid_values:
+            with self.subTest(value=repr(value)):
+                runner = RecordingRunner()
+                with self.assertRaises(ValueError):
+                    AdbClient(runner).start_pdd_view_intent(USB_SERIAL, value)  # type: ignore[arg-type]
+                self.assertEqual(runner.calls, [])
+
+    def test_product_intent_nonzero_and_timeout_remain_distinct(self) -> None:
+        class FailedIntentRunner:
+            def run(self, arguments: Sequence[str], timeout_seconds: float) -> CommandResult:
+                return CommandResult(stdout="sensitive command output", returncode=1)
+
+        class TimeoutIntentRunner:
+            def run(self, arguments: Sequence[str], timeout_seconds: float) -> CommandResult:
+                raise subprocess.TimeoutExpired(arguments, timeout_seconds)
+
+        with self.assertRaises(DeviceCommandError) as command_error:
+            AdbClient(FailedIntentRunner()).start_pdd_view_intent(USB_SERIAL, "123")
+        self.assertNotIn("sensitive command output", str(command_error.exception))
+
+        with self.assertRaises(DeviceCommandTimeoutError):
+            AdbClient(TimeoutIntentRunner()).start_pdd_view_intent(USB_SERIAL, "123")

client/tests/device/test_baseline.py

@@ -0,0 +1,281 @@
+"""基线取证测试：mock ADB/uiautomator2，不连接手机。"""
+
+from __future__ import annotations
+
+from pathlib import Path
+import base64
+from io import BytesIO
+import sys
+import tempfile
+import unittest
+
+from PIL import Image
+from uiautomator2.exceptions import HTTPTimeoutError
+
+
+CLIENT_ROOT = Path(__file__).resolve().parents[2]
+sys.path.insert(0, str(CLIENT_ROOT / "src"))
+sys.path.insert(0, str(CLIENT_ROOT / "scripts"))
+
+from cmbuyer_client.device.adb import AdbDevice, DeviceInspection
+from cmbuyer_client.device.baseline import (
+    BaselineCaptureError,
+    BaselineCaptureTimeoutError,
+    DeviceBaselineCapturer,
+    NoReconnectUiautomatorConnector,
+    PDD_PACKAGE,
+)
+from capture_device_baseline import parse_arguments, validate_arguments
+
+
+SERIAL = "USB-serial-for-test"
+
+
+class StaticAdbClient:
+    def __init__(self) -> None:
+        self.serials: list[str] = []
+
+    def inspect(self, serial: str) -> DeviceInspection:
+        self.serials.append(serial)
+        return DeviceInspection(
+            device=AdbDevice(serial=serial, state="device", model="Test Model"),
+            model="Test Model",
+            android_version="16",
+        )
+
+
+class FakeUiDevice:
+    def __init__(self, fail_dump: bool = False) -> None:
+        self.fail_dump = fail_dump
+        self.rpc_calls: list[tuple[str, object, float]] = []
+        self.app_info_calls: list[str] = []
+
+    def app_info(self, package_name: str) -> dict[str, str]:
+        self.app_info_calls.append(package_name)
+        return {"versionName": "8.17.0"}
+
+    def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+        self.rpc_calls.append((method, params, timeout))
+        if method == "takeScreenshot":
+            image_data = BytesIO()
+            Image.new("RGB", (1, 1), color="white").save(image_data, format="PNG")
+            return base64.b64encode(image_data.getvalue()).decode("ascii")
+        if method != "dumpWindowHierarchy":
+            raise AssertionError(f"unexpected method: {method}")
+        if self.fail_dump:
+            raise RuntimeError("mock dump failed")
+        return "<hierarchy><node text='page body must stay out of manifest'/></hierarchy>"
+
+
+class BaselineCaptureTests(unittest.TestCase):
+    def test_capture_writes_hashes_without_xml_or_raw_serial_in_manifest(self) -> None:
+        adb = StaticAdbClient()
+        device = FakeUiDevice()
+        capturer = DeviceBaselineCapturer(adb, lambda serial: device, timeout_seconds=7.5)
+
+        with tempfile.TemporaryDirectory() as directory:
+            output = Path(directory) / "baseline"
+            result = capturer.capture(SERIAL, output)
+            manifest = result.manifest_path.read_text(encoding="utf-8")
+
+            self.assertEqual(adb.serials, [SERIAL])
+            self.assertEqual(device.app_info_calls, [PDD_PACKAGE])
+            self.assertEqual(
+                device.rpc_calls,
+                [
+                    ("takeScreenshot", [1, 80], 7.5),
+                    ("dumpWindowHierarchy", [False, 50], 7.5),
+                ],
+            )
+            self.assertTrue(result.screenshot_path.is_file())
+            self.assertTrue(result.hierarchy_path.is_file())
+            self.assertIn('"sha256"', manifest)
+            self.assertNotIn("page body must stay out of manifest", manifest)
+            self.assertNotIn(SERIAL, manifest)
+            self.assertIn('"channel": "usb"', manifest)
+
+    def test_capture_failure_cleans_staging_and_does_not_publish_partial_output(self) -> None:
+        device = FakeUiDevice(fail_dump=True)
+        capturer = DeviceBaselineCapturer(StaticAdbClient(), lambda serial: device, timeout_seconds=5)
+
+        with tempfile.TemporaryDirectory() as directory:
+            parent = Path(directory)
+            output = parent / "baseline"
+            with self.assertRaises(BaselineCaptureError) as raised:
+                capturer.capture(SERIAL, output)
+
+            self.assertFalse(output.exists())
+            self.assertEqual(list(parent.iterdir()), [])
+            self.assertNotIn("mock dump failed", str(raised.exception))
+
+    def test_existing_output_is_never_overwritten(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            output = Path(directory) / "baseline"
+            output.mkdir()
+            sentinel = output / "keep.txt"
+            sentinel.write_text("preserve", encoding="utf-8")
+            capturer = DeviceBaselineCapturer(StaticAdbClient(), lambda serial: FakeUiDevice(), timeout_seconds=5)
+
+            with self.assertRaises(BaselineCaptureError):
+                capturer.capture(SERIAL, output)
+            self.assertEqual(sentinel.read_text(encoding="utf-8"), "preserve")
+
+    def test_no_reconnect_connector_passes_only_current_adb_device_object(self) -> None:
+        class ListedDevice:
+            serial = SERIAL
+
+        listed = ListedDevice()
+        connected: list[object] = []
+
+        connector = NoReconnectUiautomatorConnector(lambda: [listed], lambda device: connected.append(device) or FakeUiDevice())
+        connector(SERIAL)
+
+        self.assertEqual(connected, [listed])
+
+    def test_no_reconnect_connector_refuses_disappeared_serial(self) -> None:
+        connector = NoReconnectUiautomatorConnector(lambda: [], lambda device: FakeUiDevice())
+
+        with self.assertRaises(BaselineCaptureError) as raised:
+            connector(SERIAL)
+        self.assertIn("拒绝自动重连", str(raised.exception))
+
+    def test_connector_exception_is_redacted_and_publishes_no_partial_output(self) -> None:
+        def failing_connector(serial: str) -> FakeUiDevice:
+            raise RuntimeError(f"third party leaked {serial}")
+
+        capturer = DeviceBaselineCapturer(StaticAdbClient(), failing_connector, timeout_seconds=5)
+        with tempfile.TemporaryDirectory() as directory:
+            output = Path(directory) / "baseline"
+            with self.assertRaises(BaselineCaptureError) as raised:
+                capturer.capture(SERIAL, output)
+
+            self.assertNotIn(SERIAL, str(raised.exception))
+            self.assertFalse(output.exists())
+            self.assertEqual(list(Path(directory).iterdir()), [])
+
+    def test_invalid_screenshot_base64_syntax_fails_closed_without_partial_output(self) -> None:
+        class InvalidScreenshotDevice(FakeUiDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                if method == "takeScreenshot":
+                    valid = super().jsonrpc_call(method, params, timeout)
+                    return valid[:12] + "!" + valid[12:]
+                return super().jsonrpc_call(method, params, timeout)
+
+        capturer = DeviceBaselineCapturer(StaticAdbClient(), lambda serial: InvalidScreenshotDevice(), timeout_seconds=5)
+        with tempfile.TemporaryDirectory() as directory:
+            output = Path(directory) / "baseline"
+            with self.assertRaises(BaselineCaptureError) as raised:
+                capturer.capture(SERIAL, output)
+
+            self.assertIn("Base64 语法无效", str(raised.exception))
+            self.assertNotIn("!", str(raised.exception))
+            self.assertFalse(output.exists())
+            self.assertEqual(list(Path(directory).iterdir()), [])
+
+    def test_invalid_padding_and_unapproved_ascii_whitespace_fail_closed(self) -> None:
+        invalid_insertions = {
+            "padding": lambda value: value[:-1],
+            "vertical-tab": lambda value: value[:12] + "\v" + value[12:],
+            "form-feed": lambda value: value[:12] + "\f" + value[12:],
+        }
+
+        for name, make_invalid in invalid_insertions.items():
+            with self.subTest(name=name), tempfile.TemporaryDirectory() as directory:
+                class InvalidScreenshotDevice(FakeUiDevice):
+                    def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                        value = super().jsonrpc_call(method, params, timeout)
+                        if method == "takeScreenshot":
+                            return make_invalid(value)
+                        return value
+
+                output = Path(directory) / "baseline"
+                capturer = DeviceBaselineCapturer(
+                    StaticAdbClient(),
+                    lambda serial: InvalidScreenshotDevice(),
+                    timeout_seconds=5,
+                )
+                with self.assertRaises(BaselineCaptureError) as raised:
+                    capturer.capture(SERIAL, output)
+
+                self.assertIn("Base64 语法无效", str(raised.exception))
+                self.assertNotIn(SERIAL, str(raised.exception))
+                self.assertFalse(output.exists())
+                self.assertEqual(list(Path(directory).iterdir()), [])
+
+    def test_base64_decoded_nonimage_fails_closed_without_partial_output(self) -> None:
+        class NonImageScreenshotDevice(FakeUiDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                if method == "takeScreenshot":
+                    return base64.b64encode(b"not an image").decode("ascii")
+                return super().jsonrpc_call(method, params, timeout)
+
+        capturer = DeviceBaselineCapturer(StaticAdbClient(), lambda serial: NonImageScreenshotDevice(), timeout_seconds=5)
+        with tempfile.TemporaryDirectory() as directory:
+            output = Path(directory) / "baseline"
+            with self.assertRaises(BaselineCaptureError) as raised:
+                capturer.capture(SERIAL, output)
+
+            self.assertIn("图像数据无效", str(raised.exception))
+            self.assertNotIn("not an image", str(raised.exception))
+            self.assertFalse(output.exists())
+            self.assertEqual(list(Path(directory).iterdir()), [])
+
+    def test_ascii_base64_whitespace_is_normalized_before_strict_decode(self) -> None:
+        class WhitespaceScreenshotDevice(FakeUiDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                value = super().jsonrpc_call(method, params, timeout)
+                if method == "takeScreenshot":
+                    return value[:10] + " \t\r\n" + value[10:30] + "\n" + value[30:]
+                return value
+
+        capturer = DeviceBaselineCapturer(StaticAdbClient(), lambda serial: WhitespaceScreenshotDevice(), timeout_seconds=5)
+        with tempfile.TemporaryDirectory() as directory:
+            output = Path(directory) / "baseline"
+            result = capturer.capture(SERIAL, output)
+
+            self.assertTrue(result.screenshot_path.is_file())
+            with Image.open(result.screenshot_path) as image:
+                self.assertEqual(image.size, (1, 1))
+
+    def test_invalid_or_non_hierarchy_xml_fails_closed_without_partial_output(self) -> None:
+        class InvalidHierarchyDevice(FakeUiDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                if method == "dumpWindowHierarchy":
+                    return "<not-hierarchy/>"
+                return super().jsonrpc_call(method, params, timeout)
+
+        capturer = DeviceBaselineCapturer(StaticAdbClient(), lambda serial: InvalidHierarchyDevice(), timeout_seconds=5)
+        with tempfile.TemporaryDirectory() as directory:
+            output = Path(directory) / "baseline"
+            with self.assertRaises(BaselineCaptureError) as raised:
+                capturer.capture(SERIAL, output)
+
+            self.assertNotIn("not-hierarchy", str(raised.exception))
+            self.assertFalse(output.exists())
+            self.assertEqual(list(Path(directory).iterdir()), [])
+
+    def test_rpc_timeout_is_distinct_redacted_and_does_not_publish_partial_output(self) -> None:
+        class TimeoutRpcDevice(FakeUiDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                raise HTTPTimeoutError(f"raw serial={SERIAL} xml=<hierarchy/>")
+
+        capturer = DeviceBaselineCapturer(StaticAdbClient(), lambda serial: TimeoutRpcDevice(), timeout_seconds=5)
+        with tempfile.TemporaryDirectory() as directory:
+            output = Path(directory) / "baseline"
+            with self.assertRaises(BaselineCaptureTimeoutError) as raised:
+                capturer.capture(SERIAL, output)
+
+            self.assertIn("超时", str(raised.exception))
+            self.assertNotIn(SERIAL, str(raised.exception))
+            self.assertNotIn("hierarchy", str(raised.exception))
+            self.assertFalse(output.exists())
+            self.assertEqual(list(Path(directory).iterdir()), [])
+
+    def test_cli_validation_rejects_empty_serial_and_nonpositive_timeout(self) -> None:
+        empty_serial = parse_arguments(["--serial", "", "--output-dir", "baseline"])
+        with self.assertRaisesRegex(ValueError, "非空 --serial"):
+            validate_arguments(empty_serial)
+
+        nonpositive_timeout = parse_arguments(["--serial", SERIAL, "--output-dir", "baseline", "--timeout", "0"])
+        with self.assertRaisesRegex(ValueError, "必须大于 0"):
+            validate_arguments(nonpositive_timeout)

client/tests/device/test_sku_evidence_sanitizer.py

@@ -0,0 +1,735 @@
+"""T-103 脱敏器测试：全部证据为合成数据，绝不读取真实 raw 目录。"""
+
+from __future__ import annotations
+
+from hashlib import sha256
+import json
+from pathlib import Path
+import sys
+from tempfile import TemporaryDirectory
+import unittest
+from unittest.mock import patch
+from xml.etree import ElementTree
+
+from PIL import Image
+
+
+CLIENT_ROOT = Path(__file__).resolve().parents[2]
+sys.path.insert(0, str(CLIENT_ROOT / "src"))
+
+from cmbuyer_client.device.sku_evidence_sanitizer import (
+    EXPECTED_GOODS_ID,
+    EXPECTED_SCREENSHOT_HEIGHT,
+    EXPECTED_SCREENSHOT_WIDTH,
+    EXPECTED_XML_HEIGHT,
+    EXPECTED_XML_WIDTH,
+    HUMAN_DECLARED_STATES,
+    SkuEvidenceSanitizationError,
+    sanitize_sku_panel_evidence,
+)
+
+
+TEST_SERIAL = "synthetic-serial-never-publish"
+TEST_ADDRESS = "SYNTHETIC_ADDRESS_NEVER_PUBLISH"
+FULL_PHONE = "13800138000"
+MASKED_PHONE = "138****0000"
+SAFE_TEXT = "synthetic-safe-lower-content"
+CURRENT_PRICE = "快卖完 ¥12.88"
+ORIGINAL_PRICE = "¥29.00"
+PRICE_CURRENT_BOUNDS = "[396,503][712,570]"
+PRICE_ORIGINAL_BOUNDS = "[730,503][895,570]"
+
+
+def _hash(path: Path) -> str:
+    digest = sha256()
+    with path.open("rb") as source:
+        for chunk in iter(lambda: source.read(1024 * 1024), b""):
+            digest.update(chunk)
+    return digest.hexdigest()
+
+
+def _default_xml() -> str:
+    return (
+        "<hierarchy rotation='0'>"
+        f"<node bounds='[0,0][1080,540]' text='{TEST_ADDRESS}' content-desc='{MASKED_PHONE} {FULL_PHONE}' />"
+        f"{_price_node(CURRENT_PRICE, PRICE_CURRENT_BOUNDS)}"
+        f"{_price_node(ORIGINAL_PRICE, PRICE_ORIGINAL_BOUNDS)}"
+        f"<node bounds='[0,540][1080,2376]' text='{SAFE_TEXT}' />"
+        "</hierarchy>"
+    )
+
+
+def _price_node(
+    text: str,
+    bounds: str,
+    *,
+    package: str = "com.xunmeng.pinduoduo",
+    node_class: str = "android.widget.TextView",
+    clickable: str = "false",
+    enabled: str = "true",
+    visible: str = "true",
+    extra_attributes: str = "",
+    children: str = "",
+) -> str:
+    attributes = (
+        f"bounds='{bounds}' text='{text}' package='{package}' class='{node_class}' "
+        f"clickable='{clickable}' enabled='{enabled}' visible-to-user='{visible}'{extra_attributes}"
+    )
+    return f"<node {attributes}>{children}</node>"
+
+
+def _xml_with_prices(
+    current: str = CURRENT_PRICE,
+    original: str = ORIGINAL_PRICE,
+    *,
+    current_node: str | None = None,
+    original_node: str | None = None,
+    include_original: bool = True,
+    extra_nodes: str = "",
+) -> str:
+    current_markup = current_node if current_node is not None else _price_node(current, PRICE_CURRENT_BOUNDS)
+    original_markup = (
+        original_node if original_node is not None else _price_node(original, PRICE_ORIGINAL_BOUNDS)
+    ) if include_original else ""
+    return (
+        "<hierarchy>"
+        f"<node bounds='[0,0][1080,540]' text='{TEST_ADDRESS}' />"
+        f"{current_markup}"
+        f"{original_markup}"
+        f"{extra_nodes}"
+        f"<node bounds='[0,570][1080,2376]' text='{SAFE_TEXT}' />"
+        "</hierarchy>"
+    )
+
+
+def _write_raw(
+    root: Path,
+    *,
+    state: str = "panel-opened-target-preselected",
+    goods_id: str = EXPECTED_GOODS_ID,
+    model: str = "PKG110",
+    android_version: str = "16",
+    pdd_version: str = "8.17.0",
+    size: tuple[int, int] = (EXPECTED_SCREENSHOT_WIDTH, EXPECTED_SCREENSHOT_HEIGHT),
+    xml: str | None = None,
+) -> Path:
+    raw = root / "raw"
+    raw.mkdir(parents=True)
+    screenshot = raw / "screenshot.png"
+    image = Image.new("RGB", size, color=(0, 180, 0))
+    if size == (EXPECTED_SCREENSHOT_WIDTH, EXPECTED_SCREENSHOT_HEIGHT):
+        for y in range(540):
+            for x in range(8):
+                image.putpixel((x, y), (255, 0, 0))
+    image.save(screenshot, format="PNG")
+    hierarchy = raw / "hierarchy.xml"
+    hierarchy.write_text(_default_xml() if xml is None else xml, encoding="utf-8")
+    manifest = {
+        "schema_version": 1,
+        "product": {
+            "goods_id": goods_id,
+            "canonical_url": f"https://mobile.yangkeduo.com/goods.html?goods_id={goods_id}",
+        },
+        "human_declared_state": state,
+        "serial": TEST_SERIAL,
+        "channel": "wifi",
+        "device": {
+            "model": model,
+            "android_version": android_version,
+            "pdd_package": "com.xunmeng.pinduoduo",
+            "pdd_version": pdd_version,
+        },
+        "artifacts": [
+            {"path": "screenshot.png", "sha256": _hash(screenshot)},
+            {"path": "hierarchy.xml", "sha256": _hash(hierarchy)},
+        ],
+    }
+    (raw / "manifest.json").write_text(json.dumps(manifest, sort_keys=True), encoding="utf-8")
+    return raw
+
+
+class SkuEvidenceSanitizerTests(unittest.TestCase):
+    def test_all_declared_states_mask_screenshot_and_xml_without_raw_metadata(self) -> None:
+        for state in sorted(HUMAN_DECLARED_STATES):
+            with self.subTest(state=state), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary), state=state)
+                result = sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+                with Image.open(result.screenshot_path) as image:
+                    self.assertEqual(image.getpixel((0, 0)), (0, 0, 0, 255))
+                    self.assertEqual(image.getpixel((100, 600)), (0, 180, 0, 255))
+                derived_xml = result.hierarchy_path.read_text(encoding="utf-8")
+                manifest = result.manifest_path.read_text(encoding="utf-8")
+
+                self.assertIn(SAFE_TEXT, derived_xml)
+                self.assertNotIn(TEST_ADDRESS, derived_xml)
+                self.assertNotIn(FULL_PHONE, derived_xml)
+                self.assertNotIn(MASKED_PHONE, derived_xml)
+                self.assertIn(f'"human_declared_state": "{state}"', manifest)
+                self.assertIn('"privacy_tier": "SANITIZED"', manifest)
+                self.assertIn('"sanitizer_version": "t103-privacy-v5"', manifest)
+                self.assertIn('"screenshot_space": {', manifest)
+                self.assertIn('"xml_coordinate_space": {', manifest)
+                self.assertIn('"height": 2376', manifest)
+                self.assertIn('"height": 2376', manifest)
+                self.assertIn('"privacy_mask_rectangle": [', manifest)
+                self.assertIn('"removed_nodes": 1', manifest)
+                self.assertIn('"cleared_crossing_nodes": 0', manifest)
+                self.assertIn('"preserved_crossing_price_nodes": 2', manifest)
+                self.assertIn('"retained_below_nodes": 1', manifest)
+                self.assertIn('"max_right": 1080', manifest)
+                self.assertIn('"max_bottom": 2376', manifest)
+                self.assertNotIn("canonical_url", manifest)
+                self.assertNotIn(TEST_SERIAL, manifest)
+                self.assertNotIn("serial", manifest)
+                self.assertNotIn("channel", manifest)
+                self.assertNotIn(TEST_ADDRESS, manifest)
+                self.assertNotIn(FULL_PHONE, manifest)
+
+    def test_crossing_container_keeps_lower_children_but_clears_its_text(self) -> None:
+        xml = (
+            "<hierarchy>"
+            f"<node bounds='[0,0][1080,2376]' text='{TEST_ADDRESS}' content-desc='{MASKED_PHONE}'>"
+            f"<node bounds='[0,0][1080,540]' text='{FULL_PHONE}' />"
+            f"{_price_node(CURRENT_PRICE, PRICE_CURRENT_BOUNDS)}"
+            f"{_price_node(ORIGINAL_PRICE, PRICE_ORIGINAL_BOUNDS)}"
+            f"<node bounds='[0,540][1080,2376]' text='{SAFE_TEXT}' />"
+            "</node></hierarchy>"
+        )
+        with TemporaryDirectory() as temporary:
+            raw = _write_raw(Path(temporary), xml=xml)
+            result = sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+            root = ElementTree.parse(result.hierarchy_path).getroot()
+            crossing = root.find("node")
+
+            self.assertIsNotNone(crossing)
+            assert crossing is not None
+            self.assertEqual(crossing.attrib, {"bounds": "[0,0][1080,2376]"})
+            self.assertEqual(len(list(crossing)), 3)
+            self.assertEqual(list(crossing)[-1].get("text"), SAFE_TEXT)
+            manifest = json.loads(result.manifest_path.read_text(encoding="utf-8"))
+            self.assertEqual(
+                manifest["privacy_cleanup"],
+                {
+                    "removed_nodes": 1,
+                    "cleared_crossing_nodes": 1,
+                    "preserved_crossing_price_nodes": 2,
+                    "retained_below_nodes": 1,
+                    "max_right": 1080,
+                    "max_bottom": 2376,
+                },
+            )
+
+    def test_only_strict_crossing_price_leaves_are_projected_with_whitelisted_attributes(self) -> None:
+        xml = _xml_with_prices(
+            current_node=_price_node(
+                CURRENT_PRICE,
+                PRICE_CURRENT_BOUNDS,
+                extra_attributes=" content-desc='discard' resource-id='discard' focused='true'",
+            ),
+            original_node=_price_node(
+                ORIGINAL_PRICE,
+                PRICE_ORIGINAL_BOUNDS,
+                extra_attributes=" content-desc='discard-too' resource-id='discard-too'",
+            ),
+        )
+        with TemporaryDirectory() as temporary:
+            raw = _write_raw(Path(temporary), xml=xml)
+            result = sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+            root = ElementTree.parse(result.hierarchy_path).getroot()
+            prices = [node for node in root.findall("node") if node.get("text") in {CURRENT_PRICE, ORIGINAL_PRICE}]
+
+            self.assertEqual(len(prices), 2)
+            for node in prices:
+                self.assertEqual(
+                    set(node.attrib),
+                    {"bounds", "text", "package", "class", "clickable", "enabled", "visible-to-user"},
+                )
+                self.assertEqual(node.get("package"), "com.xunmeng.pinduoduo")
+                self.assertEqual(node.get("class"), "android.widget.TextView")
+                self.assertEqual(node.get("clickable"), "false")
+                self.assertEqual(node.get("enabled"), "true")
+                self.assertEqual(node.get("visible-to-user"), "true")
+
+            manifest = json.loads(result.manifest_path.read_text(encoding="utf-8"))
+            self.assertEqual(manifest["privacy_cleanup"]["preserved_crossing_price_nodes"], 2)
+            self.assertNotIn("discard", result.hierarchy_path.read_text(encoding="utf-8"))
+
+    def test_crossing_price_window_rejects_text_and_structure_drift(self) -> None:
+        bad_texts = (
+            f"快卖完 ¥12.88 {TEST_ADDRESS}",
+            f"快卖完 ¥12.88 {FULL_PHONE}",
+            "快卖完 ¥12.88 使用微信支付",
+            "快卖完 ¥12.88 提交订单",
+            "快卖完 ¥12.88 优惠-11元",
+            "快要抢光 ¥12.88",
+            "快卖完 ¥0.00",
+            "快卖完 ¥12.8",
+            "快卖完 ¥12.880",
+            "快卖完　¥12.88",
+        )
+        for text in bad_texts:
+            with self.subTest(text=text), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary), xml=_xml_with_prices(current=text))
+                with self.assertRaises(SkuEvidenceSanitizationError):
+                    sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+                self.assertFalse((raw.parent / "derived").exists())
+
+    def test_crossing_price_text_mismatch_reports_only_fixed_slot_and_reason(self) -> None:
+        newline_node = _price_node(CURRENT_PRICE, PRICE_CURRENT_BOUNDS).replace(
+            "快卖完 ¥12.88", "快卖完&#10;¥12.88"
+        )
+        cases = (
+            ("newline", _xml_with_prices(current_node=newline_node), "newline", PRICE_CURRENT_BOUNDS),
+            (
+                "non-ascii-whitespace",
+                _xml_with_prices(current="快卖完　¥12.88"),
+                "non_ascii_whitespace",
+                PRICE_CURRENT_BOUNDS,
+            ),
+            (
+                "known-prefix-missing",
+                _xml_with_prices(current="快要抢光 ¥12.88"),
+                "observed_prefix_kuaiyaoqiangguang",
+                PRICE_CURRENT_BOUNDS,
+            ),
+            (
+                "other-kuai-prefix-remains-generic",
+                _xml_with_prices(current="快递地址 ¥12.88"),
+                "known_prefix_missing",
+                PRICE_CURRENT_BOUNDS,
+            ),
+            (
+                "currency-missing",
+                _xml_with_prices(current="快卖完 12.88"),
+                "currency_missing",
+                PRICE_CURRENT_BOUNDS,
+            ),
+            (
+                "amount-shape",
+                _xml_with_prices(current="快卖完 ¥12.8"),
+                "amount_shape",
+                PRICE_CURRENT_BOUNDS,
+            ),
+            (
+                "extra-or-order",
+                _xml_with_prices(current="提交订单 ¥12.88"),
+                "extra_or_order",
+                PRICE_CURRENT_BOUNDS,
+            ),
+            (
+                "forbidden-characters",
+                _xml_with_prices(current="商品 ¥12.88"),
+                "forbidden_characters",
+                PRICE_CURRENT_BOUNDS,
+            ),
+            (
+                "right-slot-amount-shape",
+                _xml_with_prices(original="¥29.0"),
+                "amount_shape",
+                PRICE_ORIGINAL_BOUNDS,
+            ),
+        )
+        for name, xml, reason, bounds in cases:
+            with self.subTest(name=name), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary), xml=xml)
+                with self.assertRaises(SkuEvidenceSanitizationError) as raised:
+                    sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+
+                self.assertEqual(
+                    str(raised.exception),
+                    f"跨界价格节点文本不匹配：slot={bounds}；reason={reason}。",
+                )
+                self.assertFalse((raw.parent / "derived").exists())
+
+    def test_crossing_price_text_mismatch_never_echoes_sensitive_or_order_text(self) -> None:
+        cases = (
+            f"快卖完 ¥12.88 {TEST_ADDRESS}",
+            f"快卖完 ¥12.88 {FULL_PHONE}",
+            "快卖完 ¥12.88 使用微信支付",
+            "快卖完 ¥12.88 提交订单",
+        )
+        for text in cases:
+            with self.subTest(text=text), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary), xml=_xml_with_prices(current=text))
+                with self.assertRaises(SkuEvidenceSanitizationError) as raised:
+                    sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+
+                message = str(raised.exception)
+                self.assertIn("slot=[396,503][712,570]", message)
+                self.assertIn("reason=extra_or_order", message)
+                for raw_fragment in (TEST_ADDRESS, FULL_PHONE, "使用微信支付", "提交订单", "¥12.88"):
+                    self.assertNotIn(raw_fragment, message)
+
+    def test_observed_prefix_diagnostic_does_not_echo_its_suffix(self) -> None:
+        suffix = "地址和金额都不得回显"
+        text = f"快要抢光 ¥12.88 {suffix}"
+        with TemporaryDirectory() as temporary:
+            raw = _write_raw(Path(temporary), xml=_xml_with_prices(current=text))
+            with self.assertRaises(SkuEvidenceSanitizationError) as raised:
+                sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+
+            message = str(raised.exception)
+            self.assertEqual(
+                message,
+                "跨界价格节点文本不匹配：slot=[396,503][712,570]；"
+                "reason=observed_prefix_kuaiyaoqiangguang。",
+            )
+            self.assertNotIn(suffix, message)
+            self.assertNotIn("¥12.88", message)
+
+    def test_crossing_price_projection_allows_only_limited_ascii_spaces_and_yen_variants(self) -> None:
+        for current in ("快卖完 ¥12.88", " 快卖完 ¥ 12.88 ", "快卖完 ￥12.88"):
+            with self.subTest(current=current), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary), xml=_xml_with_prices(current=current))
+                result = sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+                hierarchy = result.hierarchy_path.read_text(encoding="utf-8")
+                self.assertIn(current, hierarchy)
+
+    def test_unverified_or_missing_current_price_prefixes_fail_closed(self) -> None:
+        cases = (
+            ("old-prefix", "快卖光 ¥12.88"),
+            ("bottom-button-prefix", "快要抢光 ¥12.88"),
+            ("missing-prefix", "¥12.88"),
+        )
+        for name, current in cases:
+            with self.subTest(name=name), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary), xml=_xml_with_prices(current=current))
+                with self.assertRaises(SkuEvidenceSanitizationError):
+                    sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+                self.assertFalse((raw.parent / "derived").exists())
+
+    def test_unique_current_price_without_original_price_is_published(self) -> None:
+        with TemporaryDirectory() as temporary:
+            raw = _write_raw(Path(temporary), xml=_xml_with_prices(include_original=False))
+            result = sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+            hierarchy = result.hierarchy_path.read_text(encoding="utf-8")
+            manifest = json.loads(result.manifest_path.read_text(encoding="utf-8"))
+
+            self.assertIn(CURRENT_PRICE, hierarchy)
+            self.assertNotIn(ORIGINAL_PRICE, hierarchy)
+            self.assertEqual(manifest["privacy_cleanup"]["preserved_crossing_price_nodes"], 1)
+
+    def test_crossing_price_projection_rejects_newline_and_structure_drift(self) -> None:
+        encoded_newline = _price_node(CURRENT_PRICE, PRICE_CURRENT_BOUNDS).replace(
+            "快卖完 ¥12.88", "快卖完&#10;¥12.88"
+        )
+        with TemporaryDirectory() as temporary:
+            raw = _write_raw(Path(temporary), xml=_xml_with_prices(current_node=encoded_newline))
+            with self.assertRaises(SkuEvidenceSanitizationError):
+                sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+            self.assertFalse((raw.parent / "derived").exists())
+
+        bad_structure = (
+            ("package", {"package": "com.android.systemui"}),
+            ("class", {"node_class": "android.view.View"}),
+            ("clickable", {"clickable": "true"}),
+            ("disabled", {"enabled": "false"}),
+            ("hidden", {"visible": "false"}),
+            ("children", {"children": "<node bounds='[400,510][500,520]' />"}),
+        )
+        for name, kwargs in bad_structure:
+            with self.subTest(structure=name), TemporaryDirectory() as temporary:
+                raw = _write_raw(
+                    Path(temporary),
+                    xml=_xml_with_prices(current_node=_price_node(CURRENT_PRICE, PRICE_CURRENT_BOUNDS, **kwargs)),
+                )
+                with self.assertRaises(SkuEvidenceSanitizationError):
+                    sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+                self.assertFalse((raw.parent / "derived").exists())
+
+    def test_crossing_price_candidates_require_unique_current_and_at_most_one_original(self) -> None:
+        scenarios = (
+            (
+                "missing-current",
+                _xml_with_prices(current="¥12.88", original=ORIGINAL_PRICE),
+            ),
+            (
+                "duplicate-current",
+                _xml_with_prices(current=CURRENT_PRICE, original=f"快卖完 {ORIGINAL_PRICE}"),
+            ),
+            (
+                "multiple-original",
+                _xml_with_prices(
+                    extra_nodes=_price_node("¥39.88", PRICE_ORIGINAL_BOUNDS),
+                ),
+            ),
+        )
+        for name, xml in scenarios:
+            with self.subTest(name=name), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary), xml=xml)
+                with self.assertRaises(SkuEvidenceSanitizationError):
+                    sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+                self.assertFalse((raw.parent / "derived").exists())
+
+    def test_crossing_price_outside_fixed_windows_is_cleared_and_submit_price_is_not_candidate(self) -> None:
+        outside_crossing = _price_node("快卖光 ¥99.99", "[396,498][712,570]")
+        submit = (
+            "<node bounds='[369,2225][710,2284]' text='提交订单 ¥12.88' "
+            "package='com.xunmeng.pinduoduo' class='android.widget.TextView' clickable='false' "
+            "enabled='true' visible-to-user='true' resource-id='submit-button' />"
+        )
+        with TemporaryDirectory() as temporary:
+            raw = _write_raw(Path(temporary), xml=_xml_with_prices(extra_nodes=outside_crossing + submit))
+            result = sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+            hierarchy = result.hierarchy_path.read_text(encoding="utf-8")
+            manifest = json.loads(result.manifest_path.read_text(encoding="utf-8"))
+
+            self.assertNotIn("快卖光 ¥99.99", hierarchy)
+            self.assertIn("提交订单 ¥12.88", hierarchy)
+            self.assertIn("submit-button", hierarchy)
+            self.assertEqual(manifest["privacy_cleanup"]["preserved_crossing_price_nodes"], 2)
+
+    def test_same_raw_and_config_produce_identical_derived_files(self) -> None:
+        with TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            left_raw = _write_raw(root / "left")
+            right_raw = _write_raw(root / "right")
+            left = sanitize_sku_panel_evidence(left_raw, left_raw.parent / "derived")
+            right = sanitize_sku_panel_evidence(right_raw, right_raw.parent / "derived")
+
+            for left_path, right_path in (
+                (left.screenshot_path, right.screenshot_path),
+                (left.hierarchy_path, right.hierarchy_path),
+                (left.manifest_path, right.manifest_path),
+            ):
+                self.assertEqual(left_path.read_bytes(), right_path.read_bytes())
+
+    def test_manifest_records_distinct_screenshot_and_xml_coordinate_spaces(self) -> None:
+        with TemporaryDirectory() as temporary:
+            raw = _write_raw(Path(temporary))
+            result = sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+            manifest = json.loads(result.manifest_path.read_text(encoding="utf-8"))
+
+            self.assertEqual(
+                manifest["screenshot_space"],
+                {"width": 1080, "height": 2376, "privacy_mask_rectangle": [0, 0, 1080, 540]},
+            )
+            self.assertEqual(
+                manifest["xml_coordinate_space"],
+                {
+                    "width": 1080,
+                    "height": 2376,
+                    "privacy_mask_rectangle": [0, 0, 1080, 540],
+                    "observed_max": {"right": 1080, "bottom": 2376},
+                },
+            )
+
+    def test_hash_and_metadata_mismatch_fail_closed_without_leak(self) -> None:
+        scenarios = (
+            ("hash", {}, "screenshot"),
+            ("model", {"model": "other"}, None),
+            ("android", {"android_version": "15"}, None),
+            ("version", {"pdd_version": "8.17.1"}, None),
+            ("goods", {"goods_id": "123"}, None),
+            ("state", {"state": "guessed"}, None),
+            ("old-screenshot-space", {"size": (1080, 2400)}, None),
+            ("other-screenshot-space", {"size": (100, 100)}, None),
+        )
+        for name, kwargs, corrupt_file in scenarios:
+            with self.subTest(name=name), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary), **kwargs)
+                if corrupt_file is not None:
+                    (raw / f"{corrupt_file}.png").write_bytes(b"changed")
+                with self.assertRaises(SkuEvidenceSanitizationError) as raised:
+                    sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+
+                message = str(raised.exception)
+                self.assertNotIn(TEST_SERIAL, message)
+                self.assertNotIn(TEST_ADDRESS, message)
+                self.assertNotIn(FULL_PHONE, message)
+                self.assertFalse((raw.parent / "derived").exists())
+                self.assertEqual(list(raw.parent.glob(".derived.staging-*")), [])
+
+    def test_old_and_unknown_human_states_are_rejected(self) -> None:
+        for state in ("initial", "one-dimension-selected", "all-dimensions-selected", "guessed"):
+            with self.subTest(state=state), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary), state=state)
+                with self.assertRaises(SkuEvidenceSanitizationError):
+                    sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+                self.assertFalse((raw.parent / "derived").exists())
+
+    def test_malformed_inputs_and_bounds_or_phone_residue_fail_closed(self) -> None:
+        malformed = (
+            ("manifest", None),
+            ("png", None),
+            ("xml", None),
+            ("bounds", "<hierarchy><node text='missing bounds' /></hierarchy>"),
+            (
+                "private-parent-with-lower-child",
+                "<hierarchy><node bounds='[0,0][1080,540]'><node bounds='[0,540][1080,2376]' text='x' /></node></hierarchy>",
+            ),
+            ("full-phone-below", f"<hierarchy><node bounds='[0,540][1080,2376]' text='{FULL_PHONE}' /></hierarchy>"),
+            ("masked-phone-below", f"<hierarchy><node bounds='[0,540][1080,2376]' text='{MASKED_PHONE}' /></hierarchy>"),
+        )
+        for kind, xml in malformed:
+            with self.subTest(kind=kind), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary), xml=xml)
+                if kind == "manifest":
+                    (raw / "manifest.json").write_text("{invalid", encoding="utf-8")
+                elif kind == "png":
+                    (raw / "screenshot.png").write_bytes(b"not a png")
+                    manifest = json.loads((raw / "manifest.json").read_text(encoding="utf-8"))
+                    manifest["artifacts"][0]["sha256"] = _hash(raw / "screenshot.png")
+                    (raw / "manifest.json").write_text(json.dumps(manifest), encoding="utf-8")
+                elif kind == "xml":
+                    (raw / "hierarchy.xml").write_text("<hierarchy>", encoding="utf-8")
+                    manifest = json.loads((raw / "manifest.json").read_text(encoding="utf-8"))
+                    manifest["artifacts"][1]["sha256"] = _hash(raw / "hierarchy.xml")
+                    (raw / "manifest.json").write_text(json.dumps(manifest), encoding="utf-8")
+                with self.assertRaises(SkuEvidenceSanitizationError):
+                    sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+
+                self.assertFalse((raw.parent / "derived").exists())
+                self.assertEqual(list(raw.parent.glob(".derived.staging-*")), [])
+
+    def test_phone_recheck_rejects_separator_mask_and_cross_node_bypasses(self) -> None:
+        variants = (
+            "138 0013-8000",
+            "138＊＊＊＊0000",
+            "138••••0000",
+            "138xxxx0000",
+            "138XXXX0000",
+        )
+        for value in variants:
+            xml = (
+                "<hierarchy>"
+                "<node bounds='[0,0][1080,540]' text='private' />"
+                f"<node bounds='[0,540][1080,2376]' text='{value}' />"
+                "</hierarchy>"
+            )
+            with self.subTest(value=value), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary), xml=xml)
+                with self.assertRaises(SkuEvidenceSanitizationError):
+                    sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+                self.assertFalse((raw.parent / "derived").exists())
+
+        split_xml = (
+            "<hierarchy>"
+            "<node bounds='[0,0][1080,540]' text='private' />"
+            "<node bounds='[0,540][1080,1000]' text='138' content-desc='0013' />"
+            "<node bounds='[0,1000][1080,2376]' text='8000' />"
+            "</hierarchy>"
+        )
+        with TemporaryDirectory() as temporary:
+            raw = _write_raw(Path(temporary), xml=split_xml)
+            with self.assertRaises(SkuEvidenceSanitizationError):
+                sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+            self.assertFalse((raw.parent / "derived").exists())
+
+    def test_privacy_geometry_requires_removed_and_retained_nodes(self) -> None:
+        scenarios = (
+            ("no-private", f"<hierarchy><node bounds='[0,540][1080,2376]' text='{SAFE_TEXT}' /></hierarchy>"),
+            ("no-below", "<hierarchy><node bounds='[0,0][1080,540]' text='private' /></hierarchy>"),
+        )
+        for name, xml in scenarios:
+            with self.subTest(name=name), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary), xml=xml)
+                with self.assertRaises(SkuEvidenceSanitizationError):
+                    sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+                self.assertFalse((raw.parent / "derived").exists())
+                self.assertEqual(list(raw.parent.glob(".derived.staging-*")), [])
+
+    def test_xml_coordinate_space_must_have_exact_configured_maximums(self) -> None:
+        scenarios = (
+            (
+                "short-width",
+                "<hierarchy><node bounds='[0,0][1079,540]' text='private' />"
+                "<node bounds='[0,540][1079,2376]' text='safe' /></hierarchy>",
+                "1079x2376",
+            ),
+            (
+                "short-height",
+                "<hierarchy><node bounds='[0,0][1080,540]' text='private' />"
+                "<node bounds='[0,540][1080,2375]' text='safe' /></hierarchy>",
+                "1080x2375",
+            ),
+            (
+                "wide-width",
+                "<hierarchy><node bounds='[0,0][1081,540]' text='private' />"
+                "<node bounds='[0,540][1081,2376]' text='safe' /></hierarchy>",
+                "1081x2376",
+            ),
+            (
+                "old-v2-xml-height",
+                "<hierarchy><node bounds='[0,0][1080,540]' text='private' />"
+                "<node bounds='[0,540][1080,2400]' text='safe' /></hierarchy>",
+                "1080x2400",
+            ),
+        )
+        for name, xml, observed in scenarios:
+            with self.subTest(name=name), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary), xml=xml)
+                with self.assertRaises(SkuEvidenceSanitizationError) as raised:
+                    sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+
+                self.assertIn(observed, str(raised.exception))
+                self.assertNotIn(TEST_SERIAL, str(raised.exception))
+                self.assertFalse((raw.parent / "derived").exists())
+                self.assertEqual(list(raw.parent.glob(".derived.staging-*")), [])
+
+    def test_manifest_schema_package_and_artifact_structure_are_required(self) -> None:
+        def mutate(manifest: dict[str, object], kind: str) -> None:
+            if kind == "schema":
+                manifest["schema_version"] = 2
+            elif kind == "package":
+                manifest["device"]["pdd_package"] = "com.example.other"  # type: ignore[index]
+            elif kind == "missing":
+                manifest.pop("artifacts")
+            elif kind == "duplicate":
+                manifest["artifacts"].append(manifest["artifacts"][0])  # type: ignore[index]
+            elif kind == "bad-hash":
+                manifest["artifacts"][0]["sha256"] = "g" * 64  # type: ignore[index]
+
+        for kind in ("schema", "package", "missing", "duplicate", "bad-hash"):
+            with self.subTest(kind=kind), TemporaryDirectory() as temporary:
+                raw = _write_raw(Path(temporary))
+                manifest_path = raw / "manifest.json"
+                manifest = json.loads(manifest_path.read_text(encoding="utf-8"))
+                mutate(manifest, kind)
+                manifest_path.write_text(json.dumps(manifest), encoding="utf-8")
+                with self.assertRaises(SkuEvidenceSanitizationError) as raised:
+                    sanitize_sku_panel_evidence(raw, raw.parent / "derived")
+
+                self.assertNotIn(TEST_SERIAL, str(raised.exception))
+                self.assertNotIn(TEST_ADDRESS, str(raised.exception))
+                self.assertFalse((raw.parent / "derived").exists())
+
+    def test_target_created_during_publish_is_preserved_and_staging_is_removed(self) -> None:
+        with TemporaryDirectory() as temporary:
+            raw = _write_raw(Path(temporary))
+            target = raw.parent / "derived"
+
+            def race_rename(destination: Path) -> None:
+                destination.mkdir()
+                (destination / "sentinel.txt").write_text("keep", encoding="utf-8")
+                raise FileExistsError("simulated publish race")
+
+            with patch("cmbuyer_client.device.sku_evidence_sanitizer.Path.rename", side_effect=race_rename):
+                with self.assertRaises(SkuEvidenceSanitizationError):
+                    sanitize_sku_panel_evidence(raw, target)
+
+            self.assertEqual((target / "sentinel.txt").read_text(encoding="utf-8"), "keep")
+            self.assertEqual(list(raw.parent.glob(".derived.staging-*")), [])
+
+    def test_existing_derived_is_preserved_without_reading_or_writing_raw(self) -> None:
+        with TemporaryDirectory() as temporary:
+            raw = _write_raw(Path(temporary))
+            target = raw.parent / "derived"
+            target.mkdir()
+            sentinel = target / "sentinel.txt"
+            sentinel.write_text("keep", encoding="utf-8")
+
+            with self.assertRaises(SkuEvidenceSanitizationError):
+                sanitize_sku_panel_evidence(raw, target)
+
+            self.assertEqual(sentinel.read_text(encoding="utf-8"), "keep")
+            self.assertEqual(list(raw.parent.glob(".derived.staging-*")), [])
+
+    def test_directory_contract_rejects_non_sibling_paths(self) -> None:
+        with TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            raw = _write_raw(root)
+            with self.assertRaises(SkuEvidenceSanitizationError):
+                sanitize_sku_panel_evidence(raw, root / "not-derived")
+            with self.assertRaises(SkuEvidenceSanitizationError):
+                sanitize_sku_panel_evidence(root / "not-raw", root / "derived")

client/tests/pdd/__init__.py

@@ -0,0 +1 @@
+"""拼多多受限打开模块的离线测试。"""

client/tests/pdd/fixtures/product_entry_8_17_0.xml

@@ -0,0 +1,14 @@
+<hierarchy>
+  <node package="com.xunmeng.pinduoduo" class="android.view.ViewGroup" bounds="[0,1256][1080,1355]" clickable="true" enabled="true" visible-to-user="true">
+    <node package="com.xunmeng.pinduoduo" class="android.widget.FrameLayout" bounds="[712,1312][1056,1355]" clickable="false" enabled="true" visible-to-user="true">
+      <node package="com.xunmeng.pinduoduo" class="android.widget.ViewSwitcher" bounds="[712,1312][1056,1355]" clickable="false" enabled="true" visible-to-user="true">
+        <node package="com.xunmeng.pinduoduo" class="android.view.ViewGroup" bounds="[712,1312][1056,1355]" clickable="false" enabled="true" visible-to-user="true">
+          <node text="快要抢光" package="com.xunmeng.pinduoduo" class="android.widget.TextView" bounds="[900,1312][1056,1355]" clickable="false" enabled="true" visible-to-user="true" />
+        </node>
+      </node>
+    </node>
+  </node>
+  <node package="com.xunmeng.pinduoduo" class="android.view.ViewGroup" bounds="[446,2166][1080,2328]" clickable="true" enabled="true" visible-to-user="true">
+    <node text="免拼购买" package="com.xunmeng.pinduoduo" class="android.widget.TextView" bounds="[688,2256][856,2305]" clickable="false" enabled="true" visible-to-user="true" />
+  </node>
+</hierarchy>

client/tests/pdd/fixtures/sku_panel_8_17_0.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<hierarchy>
+  <node package="com.xunmeng.pinduoduo" class="android.view.ViewGroup" bounds="[0,474][1080,2328]">
+    <node package="" class="android.view.ViewGroup" bounds="[396,498][895,570]">
+      <node text="快卖完 ¥12.88" package="com.xunmeng.pinduoduo" class="android.widget.TextView" clickable="false" enabled="true" visible-to-user="true" bounds="[396,503][712,570]" />
+      <node text="¥29.88" package="com.xunmeng.pinduoduo" class="android.widget.TextView" clickable="false" enabled="true" visible-to-user="true" bounds="[730,503][895,570]" />
+    </node>
+    <node text="已选： 黑色 CHA (纯棉） M（建议100-115）" package="com.xunmeng.pinduoduo" class="android.widget.TextView" clickable="false" enabled="true" visible-to-user="true" bounds="[396,654][1053,716]" />
+    <node package="com.xunmeng.pinduoduo" class="androidx.recyclerview.widget.RecyclerView" bounds="[36,1000][1080,1631]">
+      <node content-desc="黑色 CHA (纯棉）" package="com.xunmeng.pinduoduo" class="android.view.ViewGroup" selected="true" clickable="true" enabled="true" visible-to-user="true" bounds="[126,1000][438,1172]" />
+      <node content-desc="粉红" package="com.xunmeng.pinduoduo" class="android.view.ViewGroup" selected="false" clickable="true" enabled="true" visible-to-user="true" bounds="[456,1000][690,1172]" />
+    </node>
+    <node package="com.xunmeng.pinduoduo" class="android.view.ViewGroup" bounds="[36,1637][1044,2045]">
+      <node package="com.xunmeng.pinduoduo" class="android.widget.LinearLayout" bounds="[36,1637][1044,1718]">
+        <node text="尺码" package="com.xunmeng.pinduoduo" class="android.widget.TextView" clickable="false" enabled="true" visible-to-user="true" bounds="[36,1654][114,1700]" />
+      </node>
+      <node package="com.xunmeng.pinduoduo" class="android.widget.LinearLayout" bounds="[36,1730][1044,2045]">
+        <node text="M（建议100-115）" package="com.xunmeng.pinduoduo" class="android.view.ViewGroup" selected="true" clickable="true" enabled="true" visible-to-user="true" bounds="[439,1730][831,1815]" />
+        <node text="L（建议115-130）" package="com.xunmeng.pinduoduo" class="android.view.ViewGroup" selected="false" clickable="true" enabled="true" visible-to-user="true" bounds="[840,1730][1044,1815]" />
+      </node>
+    </node>
+    <node package="com.xunmeng.pinduoduo" class="android.widget.LinearLayout" clickable="true" enabled="true" visible-to-user="true" bounds="[357,2181][722,2328]">
+      <node text="提交订单 ¥12.88" package="com.xunmeng.pinduoduo" class="android.widget.TextView" clickable="false" enabled="true" visible-to-user="true" bounds="[369,2225][710,2284]" />
+    </node>
+  </node>
+</hierarchy>

client/tests/pdd/test_product_open.py

@@ -0,0 +1,266 @@
+"""商品打开围栏的离线测试；所有设备和命令均为 fake。"""
+
+from __future__ import annotations
+
+import base64
+from io import BytesIO
+from pathlib import Path
+import sys
+from tempfile import TemporaryDirectory
+import unittest
+
+from PIL import Image
+
+
+CLIENT_ROOT = Path(__file__).resolve().parents[2]
+sys.path.insert(0, str(CLIENT_ROOT / "src"))
+
+from cmbuyer_client.device.adb import AdbDevice, DeviceInspection, IntentLaunchSummary
+from cmbuyer_client.pdd.product_open import (
+    ProductOpenCapturer,
+    ProductOpenTimeoutError,
+    ProductOpenUiDevice,
+    ProductHierarchyCaptureError,
+    ProductPackageMismatchError,
+    ProductScreenshotCaptureError,
+    ProductVersionMismatchError,
+)
+from cmbuyer_client.pdd.product_url import ProductUrl, ProductUrlError
+
+
+SERIAL = "192.168.0.173:5555"
+URL = "https://mobile.yangkeduo.com/goods.html?goods_id=123"
+HIERARCHY = "<?xml version='1.0' encoding='UTF-8'?><hierarchy rotation='0'><node /></hierarchy>"
+
+
+def _png_base64() -> str:
+    image_data = BytesIO()
+    Image.new("RGB", (1, 1), color="white").save(image_data, format="PNG")
+    return base64.b64encode(image_data.getvalue()).decode("ascii")
+
+
+class FakeAdbClient:
+    def __init__(self) -> None:
+        self.calls: list[tuple[str, str | None]] = []
+        self.inspection = DeviceInspection(
+            device=AdbDevice(serial=SERIAL, state="device", model="PKG110"),
+            model="PKG110",
+            android_version="16",
+        )
+
+    def inspect(self, serial: str) -> DeviceInspection:
+        self.calls.append(("inspect", serial))
+        return self.inspection
+
+    def start_pdd_view_intent(self, serial: str, goods_id: str) -> IntentLaunchSummary:
+        self.calls.append(("intent", goods_id))
+        return IntentLaunchSummary(status="ok", returncode=0)
+
+
+class FakeUiDevice:
+    def __init__(
+        self,
+        *,
+        version: str = "8.17.0",
+        current_package: str = "com.xunmeng.pinduoduo",
+        current_packages: list[str] | None = None,
+        hierarchy: str = HIERARCHY,
+        timeout_on_screenshot: bool = False,
+    ) -> None:
+        self.version = version
+        self.current_package = current_package
+        self.current_packages = list(current_packages) if current_packages is not None else None
+        self.hierarchy = hierarchy
+        self.timeout_on_screenshot = timeout_on_screenshot
+        self.calls: list[str] = []
+
+    def app_info(self, package_name: str) -> dict[str, str]:
+        self.calls.append("app_info")
+        return {"versionName": self.version}
+
+    def app_current(self) -> dict[str, str]:
+        self.calls.append("app_current")
+        if self.current_packages:
+            package = self.current_packages.pop(0)
+            self.current_package = package
+        return {"package": self.current_package, "activity": "sensitive.activity.name"}
+
+    def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+        self.calls.append(method)
+        if method == "takeScreenshot":
+            if self.timeout_on_screenshot:
+                raise TimeoutError("raw remote detail")
+            return _png_base64()
+        if method == "dumpWindowHierarchy":
+            return self.hierarchy
+        raise AssertionError(f"unexpected RPC {method}")
+
+
+class ProductOpenTests(unittest.TestCase):
+    def _capturer(self, adb: FakeAdbClient, device: FakeUiDevice, **kwargs: object) -> ProductOpenCapturer:
+        return ProductOpenCapturer(adb, lambda serial: device, timeout_seconds=2, **kwargs)
+
+    def test_success_uses_canonical_url_and_redacted_atomic_manifest(self) -> None:
+        adb = FakeAdbClient()
+        device = FakeUiDevice()
+        with TemporaryDirectory() as temporary:
+            target = Path(temporary) / "evidence"
+            result = self._capturer(adb, device).open_and_capture(SERIAL, URL, target)
+            manifest = result.manifest_path.read_text(encoding="utf-8")
+
+            self.assertTrue(result.screenshot_path.exists())
+            self.assertTrue(result.hierarchy_path.exists())
+            self.assertEqual(adb.calls, [("inspect", SERIAL), ("intent", "123")])
+            self.assertEqual(device.calls, ["app_info", "app_current", "takeScreenshot", "dumpWindowHierarchy"])
+            self.assertIn('"goods_id": "123"', manifest)
+            self.assertIn('"canonical_url": "https://mobile.yangkeduo.com/goods.html?goods_id=123"', manifest)
+            self.assertNotIn(SERIAL, manifest)
+            self.assertNotIn("sensitive.activity.name", manifest)
+            self.assertNotIn(HIERARCHY, manifest)
+
+    def test_version_mismatch_halts_before_intent(self) -> None:
+        adb = FakeAdbClient()
+        for version in ("8.17.1", " 8.17.0 "):
+            with self.subTest(version=version), TemporaryDirectory() as temporary:
+                target = Path(temporary) / "evidence"
+                with self.assertRaises(ProductVersionMismatchError):
+                    self._capturer(adb, FakeUiDevice(version=version)).open_and_capture(SERIAL, URL, target)
+
+                self.assertEqual(adb.calls[-1:], [("inspect", SERIAL)])
+                self.assertFalse(target.exists())
+
+    def test_public_entry_rejects_caller_constructed_url_value_object(self) -> None:
+        adb = FakeAdbClient()
+        with TemporaryDirectory() as temporary:
+            with self.assertRaises(ProductUrlError):
+                self._capturer(adb, FakeUiDevice()).open_and_capture(
+                    SERIAL,
+                    ProductUrl(goods_id="123", canonical_url="https://example.invalid/"),  # type: ignore[arg-type]
+                    Path(temporary) / "evidence",
+                )
+
+            self.assertEqual(adb.calls, [])
+
+    def test_foreground_package_mismatch_halts_before_capture(self) -> None:
+        adb = FakeAdbClient()
+        device = FakeUiDevice(current_package="com.example.other")
+        clock = FakeClock()
+        with TemporaryDirectory() as temporary:
+            target = Path(temporary) / "evidence"
+            with self.assertRaises(ProductPackageMismatchError):
+                self._capturer(
+                    adb,
+                    device,
+                    foreground_poll_interval_seconds=0.5,
+                    monotonic_clock=clock.monotonic,
+                    sleep_function=clock.sleep,
+                ).open_and_capture(SERIAL, URL, target)
+
+            self.assertEqual(adb.calls, [("inspect", SERIAL), ("intent", "123")])
+            self.assertEqual(device.calls, ["app_info", "app_current", "app_current", "app_current", "app_current", "app_current"])
+            self.assertEqual(clock.sleeps, [0.5, 0.5, 0.5, 0.5])
+            self.assertFalse(target.exists())
+
+    def test_foreground_package_poll_waits_for_pdd_before_reading_evidence(self) -> None:
+        adb = FakeAdbClient()
+        device = FakeUiDevice(current_packages=["com.example.other", "com.xunmeng.pinduoduo"])
+        clock = FakeClock()
+        with TemporaryDirectory() as temporary:
+            target = Path(temporary) / "evidence"
+            result = self._capturer(
+                adb,
+                device,
+                foreground_poll_interval_seconds=0.25,
+                monotonic_clock=clock.monotonic,
+                sleep_function=clock.sleep,
+            ).open_and_capture(SERIAL, URL, target)
+
+            self.assertTrue(result.manifest_path.exists())
+            self.assertEqual(clock.sleeps, [0.25])
+            self.assertEqual(
+                device.calls,
+                ["app_info", "app_current", "app_current", "takeScreenshot", "dumpWindowHierarchy"],
+            )
+
+    def test_foreground_package_poll_stops_at_deadline_without_evidence(self) -> None:
+        adb = FakeAdbClient()
+        device = FakeUiDevice(current_packages=["com.example.other", "", "com.example.other"])
+        clock = FakeClock()
+        with TemporaryDirectory() as temporary:
+            target = Path(temporary) / "evidence"
+            with self.assertRaises(ProductPackageMismatchError):
+                self._capturer(
+                    adb,
+                    device,
+                    foreground_poll_interval_seconds=0.8,
+                    monotonic_clock=clock.monotonic,
+                    sleep_function=clock.sleep,
+                ).open_and_capture(SERIAL, URL, target)
+
+            self.assertEqual(len(clock.sleeps), 3)
+            for actual, expected in zip(clock.sleeps, (0.8, 0.8, 0.4), strict=True):
+                self.assertAlmostEqual(actual, expected)
+            self.assertEqual(device.calls, ["app_info", "app_current", "app_current", "app_current", "app_current"])
+            self.assertFalse(target.exists())
+            self.assertEqual(list(Path(temporary).glob(".evidence.staging-*")), [])
+
+    def test_foreground_poll_interval_must_be_positive_and_finite(self) -> None:
+        for interval in (0, -0.1, float("inf"), float("nan"), True):
+            with self.subTest(interval=interval):
+                with self.assertRaises(ValueError):
+                    ProductOpenCapturer(
+                        FakeAdbClient(),
+                        lambda serial: FakeUiDevice(),
+                        timeout_seconds=2,
+                        foreground_poll_interval_seconds=interval,  # type: ignore[arg-type]
+                    )
+
+    def test_timeout_and_invalid_hierarchy_leave_no_partial_evidence(self) -> None:
+        scenarios = (
+            (FakeUiDevice(timeout_on_screenshot=True), ProductOpenTimeoutError),
+            (FakeUiDevice(hierarchy="<not-hierarchy />"), ProductHierarchyCaptureError),
+        )
+        for device, error_type in scenarios:
+            with self.subTest(error_type=error_type.__name__), TemporaryDirectory() as temporary:
+                target = Path(temporary) / "evidence"
+                with self.assertRaises(error_type):
+                    self._capturer(FakeAdbClient(), device).open_and_capture(SERIAL, URL, target)
+
+                self.assertFalse(target.exists())
+                self.assertEqual(list(Path(temporary).glob(".evidence.staging-*")), [])
+
+    def test_invalid_screenshot_is_a_distinct_redacted_failure(self) -> None:
+        class InvalidScreenshotDevice(FakeUiDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                if method == "takeScreenshot":
+                    self.calls.append(method)
+                    return "not valid base64!"
+                return super().jsonrpc_call(method, params, timeout)
+
+        with TemporaryDirectory() as temporary:
+            target = Path(temporary) / "evidence"
+            with self.assertRaises(ProductScreenshotCaptureError) as raised:
+                self._capturer(FakeAdbClient(), InvalidScreenshotDevice()).open_and_capture(SERIAL, URL, target)
+
+            self.assertNotIn("base64", str(raised.exception).lower())
+            self.assertFalse(target.exists())
+            self.assertEqual(list(Path(temporary).glob(".evidence.staging-*")), [])
+
+    def test_read_only_protocol_has_no_ui_operation_methods(self) -> None:
+        forbidden = {"click", "swipe", "send_keys", "set_text", "press", "long_click"}
+
+        self.assertTrue(forbidden.isdisjoint(ProductOpenUiDevice.__dict__))
+        self.assertEqual(base64.b64decode(_png_base64())[:8], b"\x89PNG\r\n\x1a\n")
+
+
+class FakeClock:
+    def __init__(self) -> None:
+        self.value = 0.0
+        self.sleeps: list[float] = []
+
+    def monotonic(self) -> float:
+        return self.value
+
+    def sleep(self, seconds: float) -> None:
+        self.sleeps.append(seconds)
+        self.value += seconds

client/tests/pdd/test_product_url.py

@@ -0,0 +1,49 @@
+"""canonical 商品 URL 的离线解析测试。"""
+
+from __future__ import annotations
+
+from pathlib import Path
+import sys
+import unittest
+
+
+CLIENT_ROOT = Path(__file__).resolve().parents[2]
+sys.path.insert(0, str(CLIENT_ROOT / "src"))
+
+from cmbuyer_client.pdd.product_url import ProductUrlError, parse_product_url
+
+
+class ProductUrlTests(unittest.TestCase):
+    def test_rebuilds_url_from_goods_id(self) -> None:
+        link = parse_product_url("https://mobile.yangkeduo.com/goods.html?goods_id=00123")
+
+        self.assertEqual(link.goods_id, "00123")
+        self.assertEqual(
+            link.canonical_url,
+            "https://mobile.yangkeduo.com/goods.html?goods_id=00123",
+        )
+
+    def test_rejects_noncanonical_and_ambiguous_urls(self) -> None:
+        rejected = (
+            "http://mobile.yangkeduo.com/goods.html?goods_id=123",
+            "https://other.example/goods.html?goods_id=123",
+            "https://mobile.yangkeduo.com/other.html?goods_id=123",
+            "https://user@mobile.yangkeduo.com/goods.html?goods_id=123",
+            "https://mobile.yangkeduo.com:8443/goods.html?goods_id=123",
+            "https://mobile.yangkeduo.com:443/goods.html?goods_id=123",
+            "https://mobile.yangkeduo.com/goods.html?goods_id=123#fragment",
+            "https://mobile.yangkeduo.com/goods.html",
+            "https://mobile.yangkeduo.com/goods.html?goods_id=123&goods_id=456",
+            "https://mobile.yangkeduo.com/goods.html?goods_id=123&source=share",
+            "https://mobile.yangkeduo.com/goods.html?goods_id=12a",
+            "https://mobile.yangkeduo.com/goods.html?goods_id=%EF%BC%91%EF%BC%92%EF%BC%93",
+            "https://mobile.yangkeduo.com/goods.html?goods_id=",
+            " https://mobile.yangkeduo.com/goods.html?goods_id=123",
+            "https://MOBILE.YANGKEDUO.COM/goods.html?goods_id=123",
+            "https://mobile.yangkeduo.com/goods.html?goods_id=%31%32%33",
+        )
+
+        for value in rejected:
+            with self.subTest(value=value):
+                with self.assertRaises(ProductUrlError):
+                    parse_product_url(value)

client/tests/pdd/test_sku_panel_spike.py

@@ -0,0 +1,263 @@
+"""人工声明规格面板状态的离线只读取证测试。"""
+
+from __future__ import annotations
+
+import argparse
+import base64
+from importlib.util import module_from_spec, spec_from_file_location
+from io import BytesIO
+from pathlib import Path
+import sys
+from tempfile import TemporaryDirectory
+import unittest
+
+from PIL import Image
+
+
+CLIENT_ROOT = Path(__file__).resolve().parents[2]
+sys.path.insert(0, str(CLIENT_ROOT / "src"))
+
+from cmbuyer_client.device.adb import AdbDevice, DeviceInspection
+from cmbuyer_client.pdd.product_url import ProductUrlError
+from cmbuyer_client.pdd.sku_panel_spike import (
+    HUMAN_DECLARED_STATES,
+    SkuPanelDeclaredStateError,
+    SkuPanelEvidenceCapturer,
+    SkuPanelEvidenceError,
+    SkuPanelEvidenceTimeoutError,
+    SkuPanelHierarchyError,
+    SkuPanelPackageMismatchError,
+    SkuPanelScreenshotError,
+    SkuPanelUiDevice,
+    SkuPanelVersionMismatchError,
+)
+
+
+SERIAL = "192.168.0.173:5555"
+URL = "https://mobile.yangkeduo.com/goods.html?goods_id=123"
+HIERARCHY = "<?xml version='1.0' encoding='UTF-8'?><hierarchy><node text='sensitive page text' /></hierarchy>"
+
+
+def _png_base64() -> str:
+    image_data = BytesIO()
+    Image.new("RGB", (1, 1), color="white").save(image_data, format="PNG")
+    return base64.b64encode(image_data.getvalue()).decode("ascii")
+
+
+class FakeAdbClient:
+    def __init__(self) -> None:
+        self.calls: list[str] = []
+        self.inspection = DeviceInspection(
+            device=AdbDevice(serial=SERIAL, state="device", model="PKG110"),
+            model="PKG110",
+            android_version="16",
+        )
+
+    def inspect(self, serial: str) -> DeviceInspection:
+        self.calls.append(serial)
+        return self.inspection
+
+
+class FakeUiDevice:
+    def __init__(
+        self,
+        *,
+        version: str = "8.17.0",
+        package: str = "com.xunmeng.pinduoduo",
+        screenshot: str | None = None,
+        hierarchy: str = HIERARCHY,
+    ) -> None:
+        self.version = version
+        self.package = package
+        self.screenshot = screenshot if screenshot is not None else _png_base64()
+        self.hierarchy = hierarchy
+        self.calls: list[str] = []
+
+    def app_info(self, package_name: str) -> dict[str, str]:
+        self.calls.append("app_info")
+        return {"versionName": self.version}
+
+    def app_current(self) -> dict[str, str]:
+        self.calls.append("app_current")
+        return {"package": self.package, "activity": "sensitive.activity.name"}
+
+    def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+        self.calls.append(method)
+        if method == "takeScreenshot":
+            return self.screenshot
+        if method == "dumpWindowHierarchy":
+            return self.hierarchy
+        raise AssertionError(f"unexpected RPC {method}")
+
+
+def _load_spike_script() -> object:
+    script_path = CLIENT_ROOT / "scripts" / "capture_sku_panel_spike.py"
+    spec = spec_from_file_location("capture_sku_panel_spike_for_test", script_path)
+    assert spec is not None and spec.loader is not None
+    module = module_from_spec(spec)
+    spec.loader.exec_module(module)
+    return module
+
+
+class SkuPanelEvidenceTests(unittest.TestCase):
+    def _capturer(self, adb: FakeAdbClient, device: FakeUiDevice) -> SkuPanelEvidenceCapturer:
+        return SkuPanelEvidenceCapturer(adb, lambda serial: device, timeout_seconds=2)
+
+    def test_all_human_declared_states_publish_redacted_manifest(self) -> None:
+        for state in sorted(HUMAN_DECLARED_STATES):
+            with self.subTest(state=state), TemporaryDirectory() as temporary:
+                adb = FakeAdbClient()
+                device = FakeUiDevice()
+                target = Path(temporary) / "evidence"
+                result = self._capturer(adb, device).capture(SERIAL, URL, state, target)
+                manifest = result.manifest_path.read_text(encoding="utf-8")
+
+                self.assertEqual(adb.calls, [SERIAL])
+                self.assertEqual(device.calls, ["app_info", "app_current", "takeScreenshot", "dumpWindowHierarchy"])
+                self.assertIn(f'"human_declared_state": "{state}"', manifest)
+                self.assertIn('"goods_id": "123"', manifest)
+                self.assertIn('"canonical_url": "https://mobile.yangkeduo.com/goods.html?goods_id=123"', manifest)
+                self.assertNotIn("detected_state", manifest)
+                self.assertNotIn(SERIAL, manifest)
+                self.assertNotIn("sensitive.activity.name", manifest)
+                self.assertNotIn(HIERARCHY, manifest)
+
+    def test_invalid_state_and_url_fail_before_device_access(self) -> None:
+        adb = FakeAdbClient()
+        rejected_states = ("initial", "one-dimension-selected", "all-dimensions-selected", "guessed")
+        with TemporaryDirectory() as temporary:
+            for state in rejected_states:
+                with self.subTest(state=state), self.assertRaises(SkuPanelDeclaredStateError):
+                    self._capturer(adb, FakeUiDevice()).capture(SERIAL, URL, state, Path(temporary) / "state")
+            with self.assertRaises(ProductUrlError):
+                self._capturer(adb, FakeUiDevice()).capture(
+                    SERIAL,
+                    "https://mobile.yangkeduo.com/goods.html?goods_id=12x",
+                    "panel-opened-target-preselected",
+                    Path(temporary) / "url",
+                )
+
+        self.assertEqual(adb.calls, [])
+
+    def test_version_or_foreground_package_mismatch_stops_before_artifacts(self) -> None:
+        scenarios = (
+            (FakeUiDevice(version="8.17.1"), SkuPanelVersionMismatchError, ["app_info"]),
+            (FakeUiDevice(package="com.example.other"), SkuPanelPackageMismatchError, ["app_info", "app_current"]),
+        )
+        for device, error_type, expected_calls in scenarios:
+            with self.subTest(error_type=error_type.__name__), TemporaryDirectory() as temporary:
+                target = Path(temporary) / "evidence"
+                with self.assertRaises(error_type):
+                    self._capturer(FakeAdbClient(), device).capture(SERIAL, URL, "panel-opened-target-preselected", target)
+
+                self.assertEqual(device.calls, expected_calls)
+                self.assertFalse(target.exists())
+
+    def test_screenshot_and_xml_failure_leave_no_partial_evidence(self) -> None:
+        scenarios = (
+            (FakeUiDevice(screenshot="not valid base64!"), SkuPanelScreenshotError),
+            (FakeUiDevice(hierarchy="<not-hierarchy />"), SkuPanelHierarchyError),
+        )
+        for device, error_type in scenarios:
+            with self.subTest(error_type=error_type.__name__), TemporaryDirectory() as temporary:
+                target = Path(temporary) / "evidence"
+                with self.assertRaises(error_type):
+                    self._capturer(FakeAdbClient(), device).capture(SERIAL, URL, "panel-opened-target-preselected", target)
+
+                self.assertFalse(target.exists())
+                self.assertEqual(list(Path(temporary).glob(".evidence.staging-*")), [])
+
+    def test_screenshot_timeout_is_redacted_and_leaves_no_partial_evidence(self) -> None:
+        class TimeoutScreenshotDevice(FakeUiDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                if method == "takeScreenshot":
+                    self.calls.append(method)
+                    raise TimeoutError("adb 192.168.0.173:5555 raw detail")
+                return super().jsonrpc_call(method, params, timeout)
+
+        with TemporaryDirectory() as temporary:
+            target = Path(temporary) / "evidence"
+            with self.assertRaises(SkuPanelEvidenceTimeoutError) as raised:
+                self._capturer(FakeAdbClient(), TimeoutScreenshotDevice()).capture(SERIAL, URL, "panel-opened-target-preselected", target)
+
+            self.assertNotIn(SERIAL, str(raised.exception))
+            self.assertNotIn("adb", str(raised.exception).lower())
+            self.assertFalse(target.exists())
+            self.assertEqual(list(Path(temporary).glob(".evidence.staging-*")), [])
+
+    def test_existing_output_directory_is_not_overwritten_or_connected(self) -> None:
+        adb = FakeAdbClient()
+        device = FakeUiDevice()
+        with TemporaryDirectory() as temporary:
+            target = Path(temporary) / "evidence"
+            target.mkdir()
+            sentinel = target / "sentinel.txt"
+            sentinel.write_text("keep", encoding="utf-8")
+
+            with self.assertRaises(SkuPanelEvidenceError):
+                self._capturer(adb, device).capture(SERIAL, URL, "panel-opened-target-preselected", target)
+
+            self.assertEqual(adb.calls, [])
+            self.assertEqual(device.calls, [])
+            self.assertEqual(sentinel.read_text(encoding="utf-8"), "keep")
+
+    def test_protocol_has_no_ui_or_purchase_operation_methods(self) -> None:
+        forbidden = {
+            "click",
+            "swipe",
+            "send_keys",
+            "set_text",
+            "press",
+            "open_product",
+            "open_sku_panel",
+            "set_quantity",
+            "go_to_order_confirm",
+            "submit_order",
+            "pay",
+        }
+        self.assertTrue(forbidden.isdisjoint(SkuPanelUiDevice.__dict__))
+        self.assertEqual({name for name in SkuPanelEvidenceCapturer.__dict__ if not name.startswith("_")}, {"capture"})
+
+
+class SkuPanelSpikeCliTests(unittest.TestCase):
+    def test_validate_arguments_rejects_invalid_serial_timeout_state_and_url(self) -> None:
+        script = _load_spike_script()
+        valid = {
+            "serial": SERIAL,
+            "url": URL,
+            "goods_id": None,
+            "state": "panel-opened-target-preselected",
+            "output_dir": Path("evidence"),
+            "timeout": 10.0,
+            "adb": "adb",
+        }
+        invalid_values = (
+            ("serial", ""),
+            ("timeout", 0),
+            ("timeout", float("inf")),
+            ("state", "not-declared"),
+            ("state", "initial"),
+            ("state", "one-dimension-selected"),
+            ("state", "all-dimensions-selected"),
+            ("url", "https://mobile.yangkeduo.com/goods.html?goods_id=bad"),
+        )
+        for field, value in invalid_values:
+            with self.subTest(field=field, value=value):
+                arguments = argparse.Namespace(**(valid | {field: value}))
+                with self.assertRaises((ValueError, ProductUrlError)):
+                    script.validate_arguments(arguments)  # type: ignore[attr-defined]
+
+    def test_goods_id_is_rebuilt_as_canonical_url(self) -> None:
+        script = _load_spike_script()
+        arguments = argparse.Namespace(
+            serial=SERIAL,
+            url=None,
+            goods_id="00123",
+            state="target-selection-restored",
+            output_dir=Path("evidence"),
+            timeout=10.0,
+            adb="adb",
+        )
+
+        link = script.validate_arguments(arguments)  # type: ignore[attr-defined]
+        self.assertEqual(link.canonical_url, "https://mobile.yangkeduo.com/goods.html?goods_id=00123")

client/tests/pdd/test_sku_selection.py

@@ -0,0 +1,689 @@
+from __future__ import annotations
+
+import ast
+import base64
+from contextlib import redirect_stderr
+from io import BytesIO
+import importlib.util
+from pathlib import Path
+from tempfile import TemporaryDirectory
+import unittest
+from unittest.mock import patch
+from xml.etree import ElementTree
+
+from PIL import Image
+
+import cmbuyer_client.pdd as pdd
+import cmbuyer_client.pdd.sku_selection_runner as runner_module
+from cmbuyer_client.device.adb import AdbDevice, DeviceInspection
+from cmbuyer_client.pdd import SkuSelectionError, SkuSelectionFlow, SkuSelectionRunner
+from cmbuyer_client.pdd.sku_selection import SkuPanelDevice, _action_bounds, resolve_task_selection
+from cmbuyer_client.pdd.sku_selection_runner import (
+    SkuSelectionDeviceAdapterError,
+    SkuSelectionRunError,
+    SkuSelectionScreenshotError,
+    UiautomatorSkuPanelAdapter,
+)
+
+
+_FIXTURE = Path(__file__).with_name("fixtures") / "sku_panel_8_17_0.xml"
+_ENTRY_FIXTURE = Path(__file__).with_name("fixtures") / "product_entry_8_17_0.xml"
+_TARGET_URL = "https://mobile.yangkeduo.com/goods.html?goods_id=937122477375"
+_TASK_COLOR = "黑色CHA(纯棉)"
+_TASK_SIZE = "M(建议100-115)"
+_PRODUCT_PAGE = _ENTRY_FIXTURE.read_text(encoding="utf-8")
+
+
+def _png_base64() -> str:
+    image = Image.new("RGB", (1080, 2376), "white")
+    raw = BytesIO()
+    image.save(raw, format="PNG")
+    return base64.b64encode(raw.getvalue()).decode("ascii")
+
+
+class _RawDevice:
+    def __init__(self, hierarchy: str = _PRODUCT_PAGE, screenshot: str | None = None) -> None:
+        self.hierarchy = hierarchy
+        self.panel_hierarchy = _FIXTURE.read_text(encoding="utf-8")
+        self.version = "8.17.0"
+        self.package = "com.xunmeng.pinduoduo"
+        self.screenshot = _png_base64() if screenshot is None else screenshot
+        self.calls: list[tuple[object, ...]] = []
+        self.fail_color_readback = False
+
+    def app_info(self, package_name: str) -> dict[str, str]:
+        self.calls.append(("app_info", package_name))
+        return {"versionName": self.version}
+
+    def app_current(self) -> dict[str, str]:
+        self.calls.append(("app_current",))
+        return {"package": self.package}
+
+    def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+        self.calls.append(("jsonrpc", method, params, timeout))
+        if method == "dumpWindowHierarchy":
+            return self.hierarchy
+        if method == "takeScreenshot":
+            return self.screenshot
+        if method == "pressKey":
+            self.hierarchy = "<hierarchy />"
+            return ""
+        if method == "click":
+            if not isinstance(params, list) or len(params) != 2:
+                raise AssertionError(params)
+            self._apply_tap(int(params[0]), int(params[1]))
+            return ""
+        raise AssertionError(method)
+
+    def _apply_tap(self, x: int, y: int) -> None:
+        if "快要抢光" in self.hierarchy and "[396,498][895,570]" not in self.hierarchy:
+            self.hierarchy = self.panel_hierarchy
+            return
+        root = ElementTree.fromstring(self.hierarchy)
+        target = next(node for node in root.iter("node") if _center(node.get("bounds", "")) == (x, y))
+        color = target.get("bounds", "").endswith("][438,1172]")
+        for node in root.iter("node"):
+            if node.get("selected") is not None and ((color and ",1000]" in node.get("bounds", "")) or (not color and ",1730]" in node.get("bounds", ""))):
+                node.set("selected", "false")
+        if color and self.fail_color_readback:
+            next(node for node in root.iter("node") if node.get("content-desc") == "粉红").set("selected", "true")
+        else:
+            target.set("selected", "true")
+        self.hierarchy = ElementTree.tostring(root, encoding="unicode")
+
+    def window_size(self) -> tuple[int, int]:
+        self.calls.append(("window_size",))
+        return 1080, 2376
+
+    def select_alternates(self) -> None:
+        root = ElementTree.fromstring(self.panel_hierarchy)
+        for node in root.iter("node"):
+            if node.get("selected") is not None:
+                node.set("selected", "false")
+        next(node for node in root.iter("node") if node.get("content-desc") == "粉红").set("selected", "true")
+        next(node for node in root.iter("node") if node.get("text") == "L（建议115-130）").set("selected", "true")
+        self.panel_hierarchy = ElementTree.tostring(root, encoding="unicode")
+        if self.hierarchy != _PRODUCT_PAGE:
+            self.hierarchy = self.panel_hierarchy
+
+
+def _center(bounds: str) -> tuple[int, int]:
+    left_top, right_bottom = bounds.split("][")
+    left, top = (int(value) for value in left_top.removeprefix("[").split(","))
+    right, bottom = (int(value) for value in right_bottom.removesuffix("]").split(","))
+    return left + (right - left) // 2, top + (bottom - top) // 2
+
+
+def _entry_chain(root: ElementTree.Element) -> list[ElementTree.Element]:
+    parents = {child: parent for parent in root.iter() for child in parent}
+    child = next(node for node in root.iter("node") if node.get("text") == "快要抢光")
+    chain = [child]
+    for _ in range(4):
+        chain.append(parents[chain[-1]])
+    return chain
+
+
+def _mutate_entry(depth: int, attribute: str, value: str) -> str:
+    root = ElementTree.fromstring(_PRODUCT_PAGE)
+    _entry_chain(root)[depth].set(attribute, value)
+    return ElementTree.tostring(root, encoding="unicode")
+
+
+def _without_entry() -> str:
+    root = ElementTree.fromstring(_PRODUCT_PAGE)
+    root.remove(_entry_chain(root)[4])
+    return ElementTree.tostring(root, encoding="unicode")
+
+
+def _duplicate_entry() -> str:
+    root = ElementTree.fromstring(_PRODUCT_PAGE)
+    entry_root = _entry_chain(root)[4]
+    root.append(ElementTree.fromstring(ElementTree.tostring(entry_root, encoding="unicode")))
+    return ElementTree.tostring(root, encoding="unicode")
+
+
+def _actions(device: _RawDevice, method: str) -> list[tuple[object, ...]]:
+    return [call for call in device.calls if call[0] == "jsonrpc" and call[1] == method]
+
+
+def _tap_centers(device: _RawDevice) -> list[tuple[int, int]]:
+    return [tuple(call[2]) for call in _actions(device, "click")]  # type: ignore[misc]
+
+
+class _FakeAdb:
+    def __init__(self) -> None:
+        self.calls: list[tuple[object, ...]] = []
+        self.inspection = DeviceInspection(AdbDevice(serial="device-1", state="device"), "PKG110", "16")
+        self.on_intent: callable | None = None
+
+    def inspect(self, serial: str) -> DeviceInspection:
+        self.calls.append(("inspect", serial))
+        return self.inspection
+
+    def start_pdd_view_intent(self, serial: str, goods_id: str) -> object:
+        self.calls.append(("intent", serial, goods_id))
+        if self.on_intent is not None:
+            self.on_intent()
+        return object()
+
+
+class SkuSelectionFlowTests(unittest.TestCase):
+    def _assert_entry_rejected_without_click(self, hierarchy: str) -> None:
+        now = [0.0]
+        device = _RawDevice(hierarchy)
+        flow = SkuSelectionFlow(
+            UiautomatorSkuPanelAdapter(device, 10),
+            0.01,
+            0.01,
+            lambda: now[0],
+            lambda seconds: now.__setitem__(0, now[0] + seconds),
+        )
+        with self.assertRaises(SkuSelectionError):
+            flow.open_sku_panel(_TARGET_URL)
+        self.assertEqual(_actions(device, "click"), [])
+
+    def test_target_mapping_is_exact_and_success_path_restores_target(self) -> None:
+        device = _RawDevice()
+        adapter = UiautomatorSkuPanelAdapter(device, 10)
+        flow = SkuSelectionFlow(adapter)
+
+        flow.open_sku_panel(_TARGET_URL)
+        flow.select_sku_options(resolve_task_selection(_TASK_COLOR, _TASK_SIZE))
+        self.assertEqual(flow.read_sku_unit_price(), "12.88")
+        flow.exit_sku_panel_safely()
+
+        self.assertEqual(_tap_centers(device), [(978, 1333)])
+        self.assertEqual(_actions(device, "pressKey"), [("jsonrpc", "pressKey", ["back"], 10)])
+
+    def test_full_verified_entry_structure_taps_exact_text_child_once(self) -> None:
+        device = _RawDevice()
+        SkuSelectionFlow(UiautomatorSkuPanelAdapter(device, 10)).open_sku_panel(_TARGET_URL)
+
+        self.assertEqual(_tap_centers(device), [(978, 1333)])
+
+    def test_entry_child_and_every_ancestor_attribute_drift_never_clicks(self) -> None:
+        expected_clickable = ("false", "false", "false", "false", "true")
+        for depth in range(5):
+            changes = {
+                "package": "other.package",
+                "class": "android.widget.Button",
+                "bounds": "[1,1][2,2]",
+                "clickable": "true" if expected_clickable[depth] == "false" else "false",
+                "enabled": "false",
+                "visible-to-user": "false",
+            }
+            for attribute, value in changes.items():
+                with self.subTest(depth=depth, attribute=attribute):
+                    self._assert_entry_rejected_without_click(_mutate_entry(depth, attribute, value))
+
+    def test_duplicate_entry_and_forbidden_sibling_entry_never_click(self) -> None:
+        self._assert_entry_rejected_without_click(_duplicate_entry())
+        self._assert_entry_rejected_without_click(_without_entry())
+        self._assert_entry_rejected_without_click(_mutate_entry(0, "clickable", "true"))
+
+    def test_unknown_task_or_ui_variants_are_rejected_without_action(self) -> None:
+        for color, size in (("黑色 CHA (纯棉）", _TASK_SIZE), (_TASK_COLOR, "M（建议100-115）"), ("黑色CHA（纯棉）", _TASK_SIZE)):
+            with self.subTest(color=color, size=size), self.assertRaises(SkuSelectionError):
+                resolve_task_selection(color, size)
+
+        device = _RawDevice(_FIXTURE.read_text(encoding="utf-8"))
+        with self.assertRaises(SkuSelectionError):
+            SkuSelectionFlow(UiautomatorSkuPanelAdapter(device, 10)).select_sku_options(
+                resolve_task_selection(_TASK_COLOR, _TASK_SIZE).__class__("粉红", "L（建议115-130）")
+            )
+        self.assertEqual(_actions(device, "click"), [])
+
+    def test_option_selected_and_container_drift_fail_closed_before_click(self) -> None:
+        base = _FIXTURE.read_text(encoding="utf-8")
+        cases = (
+            base.replace('selected="true" clickable="true" enabled="true" visible-to-user="true" bounds="[126,1000][438,1172]"', 'clickable="true" enabled="true" visible-to-user="true" bounds="[126,1000][438,1172]"'),
+            base.replace('selected="true" clickable="true" enabled="true" visible-to-user="true" bounds="[126,1000][438,1172]"', 'selected="maybe" clickable="true" enabled="true" visible-to-user="true" bounds="[126,1000][438,1172]"'),
+            base.replace('bounds="[126,1000][438,1172]"', 'bounds="[1,1][20,20]"'),
+            base.replace('enabled="true" visible-to-user="true" bounds="[126,1000][438,1172]"', 'enabled="false" visible-to-user="true" bounds="[126,1000][438,1172]"'),
+        )
+        for hierarchy in cases:
+            with self.subTest(), self.assertRaises(SkuSelectionError):
+                SkuSelectionFlow(UiautomatorSkuPanelAdapter(_RawDevice(hierarchy), 10)).select_sku_options(resolve_task_selection(_TASK_COLOR, _TASK_SIZE))
+
+    def test_invalid_bounds_stop_before_action(self) -> None:
+        for bounds in ("", "[1,2][1,3]", "[1,2][3,2]", "[0,0][1081,1]", "[0,0][1,2377]", "[a,0][1,1]"):
+            with self.subTest(bounds=bounds), self.assertRaises(SkuSelectionError):
+                _action_bounds(bounds)
+
+        device = _RawDevice(_PRODUCT_PAGE.replace("[900,1312][1056,1355]", "[0,0][1081,1]"))
+        with self.assertRaises(SkuSelectionError):
+            SkuSelectionFlow(UiautomatorSkuPanelAdapter(device, 10)).open_sku_panel(_TARGET_URL)
+        self.assertEqual(_actions(device, "click"), [])
+
+    def test_color_readback_failure_never_attempts_second_option(self) -> None:
+        device = _RawDevice()
+        device.fail_color_readback = True
+        flow = SkuSelectionFlow(UiautomatorSkuPanelAdapter(device, 10))
+        flow.open_sku_panel(_TARGET_URL)
+        device.select_alternates()
+        with self.assertRaises(SkuSelectionError):
+            flow.select_sku_options(resolve_task_selection(_TASK_COLOR, _TASK_SIZE))
+        self.assertEqual(_tap_centers(device), [(978, 1333), (282, 1086)])
+
+    def test_non_target_selection_restores_each_dimension_once(self) -> None:
+        device = _RawDevice()
+        flow = SkuSelectionFlow(UiautomatorSkuPanelAdapter(device, 10))
+        flow.open_sku_panel(_TARGET_URL)
+        device.select_alternates()
+        flow.select_sku_options(resolve_task_selection(_TASK_COLOR, _TASK_SIZE))
+        self.assertEqual(
+            _tap_centers(device),
+            [(978, 1333), (282, 1086), (635, 1772)],
+        )
+
+    def test_price_rejects_coupon_prefix_extra_amount_and_bottom_action(self) -> None:
+        for replacement in ("券后 ¥12.88", "会员补贴 ¥12.88", "到手 ¥12.88", "实付 ¥12.88", "区间 ¥12.88", "原价 ¥12.88", "划线价 ¥12.88", "最低 ¥12.88", "低至 ¥12.88", "起价 ¥12.88", "快卖完 1 ¥12.88", "快卖完 ¥12.88 ¥11.88"):
+            with self.subTest(replacement=replacement):
+                device = _RawDevice(_FIXTURE.read_text(encoding="utf-8").replace("快卖完 ¥12.88", replacement))
+                with self.assertRaises(SkuSelectionError):
+                    SkuSelectionFlow(UiautomatorSkuPanelAdapter(device, 10)).read_sku_unit_price()
+        device = _RawDevice(_FIXTURE.read_text(encoding="utf-8").replace("快卖完 ¥12.88", "提交订单 ¥12.88"))
+        with self.assertRaises(SkuSelectionError):
+            SkuSelectionFlow(UiautomatorSkuPanelAdapter(device, 10)).read_sku_unit_price()
+        clickable_parent = _FIXTURE.read_text(encoding="utf-8").replace(
+            '<node package="" class="android.view.ViewGroup" bounds="[396,498][895,570]">',
+            '<node package="" class="android.view.ViewGroup" clickable="true" bounds="[396,498][895,570]">',
+        )
+        with self.assertRaises(SkuSelectionError):
+            SkuSelectionFlow(UiautomatorSkuPanelAdapter(_RawDevice(clickable_parent), 10)).read_sku_unit_price()
+
+    def test_public_api_and_protocol_have_no_broad_or_order_operations(self) -> None:
+        forbidden = {"quantity", "confirm", "authorization", "fence", "submit", "payment", "click"}
+        self.assertTrue(forbidden.isdisjoint(SkuSelectionFlow.__dict__))
+        self.assertTrue(forbidden.isdisjoint(SkuPanelDevice.__dict__))
+        self.assertTrue(forbidden.isdisjoint(pdd.__all__))
+
+    def test_static_ast_boundary_limits_flow_runner_adapter_and_cli(self) -> None:
+        root = Path(__file__).resolve().parents[2]
+        files = (
+            root / "src" / "cmbuyer_client" / "pdd" / "sku_selection.py",
+            root / "src" / "cmbuyer_client" / "pdd" / "sku_selection_runner.py",
+            root / "scripts" / "run_t103_sku_selection.py",
+        )
+        forbidden = ("quantity", "confirm", "authorization", "fence", "submit_order", "payment")
+        for path in files:
+            source = path.read_text(encoding="utf-8")
+            with self.subTest(path=path.name):
+                self.assertTrue(all(token not in source.lower() for token in forbidden))
+                tree = ast.parse(source)
+                self.assertFalse(any(isinstance(node, ast.ImportFrom) and node.module in {"selenium", "requests"} for node in ast.walk(tree)))
+        runner_tree = ast.parse(files[1].read_text(encoding="utf-8"))
+        click_calls = [node for node in ast.walk(runner_tree) if isinstance(node, ast.Constant) and node.value == "click"]
+        self.assertEqual(len(click_calls), 1)
+
+    def test_entry_wait_rejects_unchanged_or_duplicate_page_without_click(self) -> None:
+        now = [0.0]
+        device = _RawDevice()
+        flow = SkuSelectionFlow(UiautomatorSkuPanelAdapter(device, 10), 0.01, 0.01, lambda: now[0], lambda seconds: now.__setitem__(0, now[0] + seconds))
+        with self.assertRaises(SkuSelectionError):
+            flow.open_sku_panel(_TARGET_URL, _PRODUCT_PAGE)
+        self.assertEqual(_actions(device, "click"), [])
+
+    def test_action_postcondition_wait_never_repeats_entry_click(self) -> None:
+        class NoPanelAfterEntry(_RawDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                if method == "click":
+                    self.calls.append(("jsonrpc", method, params, timeout))
+                    return ""
+                return super().jsonrpc_call(method, params, timeout)
+
+        device = NoPanelAfterEntry()
+        with self.assertRaises(SkuSelectionError):
+            SkuSelectionFlow(UiautomatorSkuPanelAdapter(device, 10)).open_sku_panel(_TARGET_URL)
+        self.assertEqual(_tap_centers(device), [(978, 1333)])
+
+        duplicate = _duplicate_entry()
+        device = _RawDevice(duplicate)
+        with self.assertRaises(SkuSelectionError):
+            SkuSelectionFlow(UiautomatorSkuPanelAdapter(device, 10)).open_sku_panel(_TARGET_URL)
+        self.assertEqual(_actions(device, "click"), [])
+
+    def test_fixture_contains_no_address_phone_or_payment_credentials(self) -> None:
+        for fixture in (_FIXTURE, _ENTRY_FIXTURE):
+            content = fixture.read_text(encoding="utf-8")
+            with self.subTest(fixture=fixture.name):
+                self.assertNotRegex(content, r"1[3-9]\d{9}")
+                for forbidden in ("地址", "收货", "支付", "银行卡", "身份证"):
+                    self.assertNotIn(forbidden, content)
+        content = _FIXTURE.read_text(encoding="utf-8")
+        root = ElementTree.fromstring(content)
+        leaf = next(node for node in root.iter("node") if node.get("text") == "提交订单 ¥12.88")
+        self.assertEqual(leaf.get("clickable"), "false")
+        self.assertEqual(leaf.get("bounds"), "[369,2225][710,2284]")
+
+
+class SkuSelectionRunnerTests(unittest.TestCase):
+    def _runner(self, adb: _FakeAdb, device: _RawDevice) -> SkuSelectionRunner:
+        device.hierarchy = "<hierarchy />"
+        adb.on_intent = lambda: setattr(device, "hierarchy", _PRODUCT_PAGE.replace("<hierarchy>", '<hierarchy post-intent="1">'))
+        return SkuSelectionRunner(adb, lambda serial: device, 10)
+
+    def test_runner_atomically_publishes_screenshot_and_redacted_manifest(self) -> None:
+        adb = _FakeAdb()
+        device = _RawDevice()
+        with TemporaryDirectory() as temporary:
+            target = Path(temporary) / "result"
+            result = self._runner(adb, device).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, target)
+
+            self.assertEqual(result.unit_price, "12.88")
+            manifest = result.manifest_path.read_text(encoding="utf-8")
+            self.assertTrue(result.screenshot_path.is_file())
+            self.assertNotIn("device-1", manifest)
+            self.assertNotIn("hierarchy", manifest)
+            self.assertNotIn("已选", manifest)
+            self.assertIn('"unit_price": "12.88"', manifest)
+            self.assertIn('"selection_status": "restored"', manifest)
+            self.assertIn('"panel_status": "verified"', manifest)
+            self.assertIn('"safe_exit": "completed"', manifest)
+            self.assertFalse((target / "hierarchy.xml").exists())
+            self.assertEqual(_actions(device, "pressKey"), [("jsonrpc", "pressKey", ["back"], 10)])
+
+    def test_target_created_during_publish_is_preserved_without_staging_residue(self) -> None:
+        with TemporaryDirectory() as temporary:
+            target = Path(temporary) / "result"
+            original_rename = runner_module.os.rename
+
+            def create_target_then_rename(source: str | Path, destination: str | Path) -> None:
+                Path(destination).mkdir()
+                (Path(destination) / "sentinel").write_text("keep", encoding="utf-8")
+                original_rename(source, destination)
+
+            with patch.object(runner_module.os, "rename", side_effect=create_target_then_rename), self.assertRaises(SkuSelectionRunError):
+                self._runner(_FakeAdb(), _RawDevice()).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, target)
+            self.assertEqual((target / "sentinel").read_text(encoding="utf-8"), "keep")
+            self.assertEqual(list(Path(temporary).glob(".result.staging-*")), [])
+
+    def test_bad_screenshot_or_existing_target_never_publishes_manifest(self) -> None:
+        with TemporaryDirectory() as temporary:
+            target = Path(temporary) / "result"
+            with self.assertRaises(SkuSelectionScreenshotError):
+                self._runner(_FakeAdb(), _RawDevice(screenshot="not-image")).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, target)
+            self.assertFalse(target.exists())
+            self.assertEqual(list(Path(temporary).glob(".result.staging-*")), [])
+
+            target = Path(temporary) / "write-failure"
+            with patch.object(runner_module, "_save_base64_screenshot", side_effect=OSError("private path")):
+                with self.assertRaises(SkuSelectionScreenshotError):
+                    self._runner(_FakeAdb(), _RawDevice()).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, target)
+            self.assertFalse(target.exists())
+            self.assertEqual(list(Path(temporary).glob(".write-failure.staging-*")), [])
+
+            adb = _FakeAdb()
+            device = _RawDevice()
+            target.mkdir()
+            sentinel = target / "keep"
+            sentinel.write_text("keep", encoding="utf-8")
+            with self.assertRaises(SkuSelectionRunError):
+                self._runner(adb, device).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, target)
+            self.assertEqual(adb.calls, [])
+            self.assertEqual(device.calls, [])
+            self.assertEqual(sentinel.read_text(encoding="utf-8"), "keep")
+
+    def test_device_screen_and_output_preflight_fail_before_any_click(self) -> None:
+        with TemporaryDirectory() as temporary:
+            adb = _FakeAdb()
+            adb.inspection = DeviceInspection(AdbDevice(serial="device-1", state="device"), "wrong", "16")
+            device = _RawDevice()
+            with self.assertRaises(SkuSelectionRunError):
+                self._runner(adb, device).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, Path(temporary) / "result")
+            self.assertEqual(device.calls, [])
+
+            class WrongScreenDevice(_RawDevice):
+                def window_size(self) -> tuple[int, int]:
+                    return 1080, 1920
+
+            device = WrongScreenDevice()
+            with self.assertRaises(SkuSelectionRunError):
+                self._runner(_FakeAdb(), device).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, Path(temporary) / "screen")
+            self.assertEqual(_actions(device, "click"), [])
+
+            parent_file = Path(temporary) / "not-a-directory"
+            parent_file.write_text("x", encoding="utf-8")
+            adb = _FakeAdb()
+            device = _RawDevice()
+            with self.assertRaises(SkuSelectionRunError):
+                self._runner(adb, device).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, parent_file / "result")
+            self.assertEqual(adb.calls, [])
+            self.assertEqual(device.calls, [])
+
+    def test_small_but_valid_png_is_not_accepted(self) -> None:
+        image = Image.new("RGB", (1, 1), "white")
+        raw = BytesIO(); image.save(raw, format="PNG")
+        with TemporaryDirectory() as temporary, self.assertRaises(SkuSelectionScreenshotError):
+            self._runner(_FakeAdb(), _RawDevice(screenshot=base64.b64encode(raw.getvalue()).decode("ascii"))).run(
+                "device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, Path(temporary) / "result"
+            )
+
+    def test_failure_after_entry_attempts_one_safe_exit_and_hides_device_detail(self) -> None:
+        adb = _FakeAdb()
+        device = _RawDevice()
+        device.fail_color_readback = True
+        device.select_alternates()
+        with TemporaryDirectory() as temporary:
+            with self.assertRaises(SkuSelectionError):
+                self._runner(adb, device).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, Path(temporary) / "result")
+        self.assertEqual(_actions(device, "pressKey"), [])
+
+        class FailingRawDevice(_RawDevice):
+            def app_info(self, package_name: str) -> dict[str, str]:
+                raise RuntimeError("device-1 <xml>private</xml>")
+
+        with self.assertRaises(SkuSelectionDeviceAdapterError) as raised:
+            UiautomatorSkuPanelAdapter(FailingRawDevice(), 10).app_info("com.xunmeng.pinduoduo")
+        self.assertNotIn("device-1", str(raised.exception))
+        self.assertNotIn("private", str(raised.exception))
+
+    def test_unverified_failure_never_sends_blind_back(self) -> None:
+        class InvalidAfterOptionDevice(_RawDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                value = super().jsonrpc_call(method, params, timeout)
+                if method == "click" and "[396,498][895,570]" in self.hierarchy:
+                    self.hierarchy = "<hierarchy />"
+                return value
+
+        device = InvalidAfterOptionDevice()
+        device.select_alternates()
+        with TemporaryDirectory() as temporary, self.assertRaises(SkuSelectionError):
+            self._runner(_FakeAdb(), device).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, Path(temporary) / "result")
+        self.assertEqual(_actions(device, "pressKey"), [])
+
+    def test_adapter_timeout_is_mapped_without_third_party_detail(self) -> None:
+        class TimeoutRawDevice(_RawDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                raise TimeoutError("device-1 <hierarchy>private</hierarchy>")
+
+        with self.assertRaises(SkuSelectionRunError) as raised:
+            UiautomatorSkuPanelAdapter(TimeoutRawDevice(), 10).dump_window_hierarchy()
+        self.assertNotIn("device-1", str(raised.exception))
+        self.assertNotIn("private", str(raised.exception))
+
+    def test_entry_attempt_is_recorded_before_unconfirmed_click_and_not_retried(self) -> None:
+        class TimeoutTapDevice(_RawDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                self.calls.append(("jsonrpc", method, params, timeout))
+                if method == "click":
+                    raise TimeoutError("device detail")
+                return super().jsonrpc_call(method, params, timeout)
+
+        adapter = UiautomatorSkuPanelAdapter(TimeoutTapDevice(), 10)
+        with self.assertRaises(SkuSelectionRunError):
+            adapter.tap_sku_entry("[900,1312][1056,1355]")
+        self.assertTrue(adapter.entry_was_tapped)
+        self.assertEqual(_actions(adapter._device, "click"), [("jsonrpc", "click", [978, 1333], 10)])
+
+    def test_entry_stability_interruptions_never_click(self) -> None:
+        now = [0.0]
+        class SequenceDevice(_RawDevice):
+            def __init__(self) -> None:
+                super().__init__(); self.frames = [_PRODUCT_PAGE, "<hierarchy />", _PRODUCT_PAGE]
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                if method == "dumpWindowHierarchy" and self.frames:
+                    self.hierarchy = self.frames.pop(0)
+                return super().jsonrpc_call(method, params, timeout)
+        device = SequenceDevice()
+        flow = SkuSelectionFlow(UiautomatorSkuPanelAdapter(device, 10), .02, .01, lambda: now[0], lambda x: now.__setitem__(0, now[0] + x))
+        with self.assertRaises(SkuSelectionError): flow.open_sku_panel(_TARGET_URL, "<hierarchy />")
+        self.assertEqual(_actions(device, "click"), [])
+
+    def test_screenshot_drift_and_foreground_drift_publish_nothing_and_never_back(self) -> None:
+        for drift in ("color", "size", "price"):
+            class DriftDevice(_RawDevice):
+                def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                    value = super().jsonrpc_call(method, params, timeout)
+                    if method == "takeScreenshot":
+                        if drift == "price":
+                            self.hierarchy = self.hierarchy.replace("快卖完 ¥12.88", "快卖完 ¥13.88")
+                        else:
+                            root = ElementTree.fromstring(self.hierarchy)
+                            if drift == "color":
+                                for node in root.iter("node"):
+                                    if node.get("selected") is not None and ",1000]" in node.get("bounds", ""):
+                                        node.set("selected", "false")
+                                next(node for node in root.iter("node") if node.get("content-desc") == "粉红").set("selected", "true")
+                            else:
+                                for node in root.iter("node"):
+                                    if node.get("selected") is not None and ",1730]" in node.get("bounds", ""):
+                                        node.set("selected", "false")
+                                next(node for node in root.iter("node") if node.get("text") == "L（建议115-130）").set("selected", "true")
+                            self.hierarchy = ElementTree.tostring(root, encoding="unicode")
+                    return value
+            with self.subTest(drift=drift), TemporaryDirectory() as temporary:
+                target = Path(temporary) / "out"
+                with self.assertRaises((SkuSelectionError, SkuSelectionRunError)):
+                    self._runner(_FakeAdb(), DriftDevice()).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, target)
+                self.assertFalse(target.exists())
+                self.assertFalse((target / "manifest.json").exists())
+                self.assertEqual(list(Path(temporary).glob(".out.staging-*")), [])
+
+        device = _RawDevice(); device.select_alternates()
+        device.package = "other"
+        with self.assertRaises(SkuSelectionError): SkuSelectionFlow(UiautomatorSkuPanelAdapter(device, 10)).exit_sku_panel_safely()
+        self.assertEqual(_actions(device, "pressKey"), [])
+
+    def test_screenshot_then_foreground_drift_publishes_nothing_and_never_back(self) -> None:
+        class ForegroundDriftDevice(_RawDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                value = super().jsonrpc_call(method, params, timeout)
+                if method == "takeScreenshot": self.package = "other"
+                return value
+
+        device = ForegroundDriftDevice()
+        with TemporaryDirectory() as temporary:
+            target = Path(temporary) / "out"
+            with self.assertRaises(SkuSelectionError):
+                self._runner(_FakeAdb(), device).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, target)
+            self.assertFalse(target.exists())
+            self.assertFalse((target / "manifest.json").exists())
+            self.assertEqual(list(Path(temporary).glob(".out.staging-*")), [])
+        self.assertEqual(_actions(device, "pressKey"), [])
+
+    def test_option_timeout_reconciliation_controls_back_once(self) -> None:
+        class OptionTimeoutDevice(_RawDevice):
+            def __init__(self, delivered: bool) -> None:
+                super().__init__(); self.delivered = delivered; self.clicks = 0
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                if method == "click":
+                    self.clicks += 1
+                    if self.clicks == 2:
+                        if self.delivered: super().jsonrpc_call(method, params, timeout)
+                        else: self.calls.append(("jsonrpc", method, params, timeout))
+                        raise TimeoutError("uncertain option")
+                return super().jsonrpc_call(method, params, timeout)
+
+        for delivered, expected_back in ((False, 0), (True, 1)):
+            with self.subTest(delivered=delivered), TemporaryDirectory() as temporary:
+                device = OptionTimeoutDevice(delivered); device.select_alternates()
+                adb = _FakeAdb(); device.hierarchy = "<hierarchy />"
+                adb.on_intent = lambda: setattr(device, "hierarchy", _PRODUCT_PAGE.replace("<hierarchy>", '<hierarchy post-intent="1">'))
+                runner = SkuSelectionRunner(adb, lambda serial: device, .03)
+                with self.assertRaises(SkuSelectionRunError):
+                    runner.run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, Path(temporary) / "out")
+                self.assertEqual(len(_actions(device, "click")), 2)
+                self.assertEqual(len(_actions(device, "pressKey")), expected_back)
+
+    def test_back_timeout_is_never_retried(self) -> None:
+        class BackTimeoutDevice(_RawDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                if method == "pressKey":
+                    super().jsonrpc_call(method, params, timeout)
+                    raise TimeoutError("back uncertain")
+                return super().jsonrpc_call(method, params, timeout)
+
+        device = BackTimeoutDevice()
+        with TemporaryDirectory() as temporary, self.assertRaises(SkuSelectionRunError):
+            self._runner(_FakeAdb(), device).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, Path(temporary) / "out")
+        self.assertEqual(len(_actions(device, "pressKey")), 1)
+
+    def test_entry_click_timeout_reconciles_only_through_verified_flow_exit(self) -> None:
+        class DeliveredThenTimeout(_RawDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> str:
+                if method == "click" and self.hierarchy != _FIXTURE.read_text(encoding="utf-8"):
+                    super().jsonrpc_call(method, params, timeout)
+                    raise TimeoutError("delivery uncertain")
+                return super().jsonrpc_call(method, params, timeout)
+
+        device = DeliveredThenTimeout()
+        with TemporaryDirectory() as temporary, self.assertRaises(SkuSelectionRunError):
+            self._runner(_FakeAdb(), device).run("device-1", _TARGET_URL, _TASK_COLOR, _TASK_SIZE, Path(temporary) / "result")
+        self.assertEqual(len(_actions(device, "click")), 1)
+        self.assertEqual(len(_actions(device, "pressKey")), 1)
+
+
+class SkuSelectionCliTests(unittest.TestCase):
+    def test_cli_accepts_only_target_url_and_task_values(self) -> None:
+        script = _load_runner_script()
+        valid = {
+            "serial": "device-1",
+            "url": _TARGET_URL,
+            "color": _TASK_COLOR,
+            "size": _TASK_SIZE,
+            "output_dir": Path("evidence"),
+            "timeout": 10.0,
+            "adb": "adb",
+        }
+        script.validate_arguments(type("Arguments", (), valid)())
+        for field, value in (("serial", ""), ("url", "https://mobile.yangkeduo.com/goods.html?goods_id=1"), ("color", "黑色 CHA (纯棉）"), ("size", "M（建议100-115）"), ("timeout", 0), ("timeout", float("inf"))):
+            with self.subTest(field=field, value=value), self.assertRaises((ValueError, SkuSelectionError)):
+                script.validate_arguments(type("Arguments", (), valid | {field: value})())
+
+    def test_cli_main_catches_flow_error_without_traceback_or_page_body(self) -> None:
+        script = _load_runner_script()
+
+        class FlowFailingRunner:
+            def __init__(self, *args: object, **kwargs: object) -> None: pass
+            def run(self, *args: object, **kwargs: object) -> object:
+                raise SkuSelectionError("<hierarchy>page-body</hierarchy>")
+
+        stderr = BytesIO()
+        # TextIOWrapper keeps the assertion independent from host console encoding.
+        import io
+        text_stderr = io.TextIOWrapper(stderr, encoding="utf-8")
+        with patch.object(script, "SkuSelectionRunner", FlowFailingRunner), redirect_stderr(text_stderr):
+            status = script.main([
+                "--serial", "device-1", "--url", _TARGET_URL, "--color", _TASK_COLOR,
+                "--size", _TASK_SIZE, "--output-dir", "evidence",
+            ])
+        text_stderr.flush()
+        output = stderr.getvalue().decode("utf-8")
+        self.assertEqual(status, 1)
+        self.assertNotIn("Traceback", output)
+        self.assertNotIn("page-body", output)
+
+
+def _load_runner_script() -> object:
+    path = Path(__file__).resolve().parents[2] / "scripts" / "run_t103_sku_selection.py"
+    specification = importlib.util.spec_from_file_location("run_t103_sku_selection_test", path)
+    if specification is None or specification.loader is None:
+        raise RuntimeError("无法加载 T-103 运行脚本。")
+    module = importlib.util.module_from_spec(specification)
+    specification.loader.exec_module(module)
+    return module
+
+
+if __name__ == "__main__":
+    unittest.main()