Merge pull request 'T-020: 回填 Issue #71 映射' (#72) from docs/T-020-issue-map into main

Product acceptance confirmed on 2026-08-11. Closes #63.

AGENTS.md

@@ -6,7 +6,7 @@
 
 YoVision 是智能视频事件平台：统一接入 ONVIF/RTSP 摄像头与后续异构传感器，完成检测、规则判定、事件留证和分级预警。
 
-当前为 **M0：摄像头兼容性验证与需求定稿**。默认交付 16 路，单站点按 32/64/128 路横向扩展；16 只能是默认配额，不能成为代码、数据库、数组、分页或批量操作的硬上限。
+当前已完成 M0、M1 和 M2 的本地基线，进入 **M3：Bell/Brain 最小事件闭环**。默认交付 16 路，单站点按 32/64/128 路横向扩展；16 只能是默认配额，不能成为代码、数据库、数组、分页或批量操作的硬上限。
 
 ## 固定阅读顺序
 
@@ -83,6 +83,9 @@ Gitea 不可用时，只能继续已经确认属于自己的任务；不得领
 python scripts/validate_agent_context.py
 python -m unittest discover -s tests -p "test_*.py"
 python scripts/validate_harness_governance.py
+go -C Bell test ./...
+go -C Bell vet ./...
+go -C Bell build ./...
 ```
 
 代码出现后，还必须执行 `docs/03-tech-stack.md` 中与本任务命中的模块测试；完整门禁、设备验收和容量验收按任务文件触发。提交前检查 `git status --short`、`git diff`、`git diff --cached` 与 `git diff --check`。

Bell/.gitkeep

@@ -1 +0,0 @@
-

Bell/README.md

@@ -0,0 +1,59 @@
+# Bell 事件存储、审计与 Brain 事件入口
+
+Bell 当前实现 M3 的事件域基础、Sense 审计 relay 与默认关闭的 Brain 事件 ingress：
+
+- Bell 在可信 ingress 内为不含 `id` 的候选事实生成 `evt_` ULID。
+- 最终事件同时通过冻结 v0.1 JSON Schema 与六项代码级断言。
+- PostgreSQL `bell.events` 保存不可变事实；后续 outcome 追加到 `bell.event_outcomes`。
+- `bell_runtime` 对事件、outcome、全局审计和 Brain 来源收据只有 `SELECT/INSERT`，没有 `UPDATE/DELETE/TRUNCATE` 或 migration owner 权限；只可清理两张短期 nonce 收据表。
+- `cmd/bell-api` 默认只监听 `127.0.0.1:8081`，接收 HMAC 签名的 `/internal/v1/audit-events:batch`，把脱敏设备操作事实追加到 `bell.audit_events`。
+- `(key_id, nonce)` 收据保存 10 分钟；相同摘要重放原结果，不同摘要返回冲突。非回环监听必须配置 TLS 证书和私钥。
+- T-019 可选 `/internal/v1/event-candidates` 把 HMAC key 绑定到一个 `producer_id`，通过 `event_ingress_bindings` 解析数字事件身份并复查当前 Site/Area/Sense Device；缺失、删除、Area 不一致或 `non_imaging_only` 均失败关闭。
+- `(producer_id, source_event_id)` 永久收据、最终事件和成功 nonce 响应同事务提交；相同 canonical candidate 返回原 Bell ID，不同 candidate 返回 `source_event_conflict`。
+
+公共认证/事件 API、规则、Alert 和证据对象存储仍需后续任务冻结。两条 HMAC ingress 都是内部适配器，不得当成 Bell 公共协议或共用 key。
+
+启动内部 receiver 前必须私下设置 `BELL_DB_DSN` 和仓库外绝对路径 `BELL_AUDIT_KEYS_FILE`。远端监听还必须设置 `BELL_TLS_CERT_FILE`、`BELL_TLS_KEY_FILE`；仓库不保存 DSN、key 或证书：
+
+```powershell
+go -C Bell run ./cmd/bell-api
+```
+
+事件 ingress 默认关闭。启用前，管理员先在专用数据库执行 `001`～`017` migration，并用受控 SQL 创建与现有 Bell Site/Area、Sense Device 一致的绑定；运行角色不能写绑定。然后私下设置：
+
+```powershell
+$env:BELL_EVENT_INGRESS_ENABLED = 'true'
+$env:BELL_EVENT_INGRESS_KEYS_FILE = 'D:\private\brain-event-keys.json'
+$env:BELL_EVIDENCE_FORBIDDEN_NAMES_FILE = 'D:\private\forbidden-evidence-names.txt'
+go -C Bell run ./cmd/bell-api
+```
+
+forbidden-names 文件每行一个不得出现在证据 URI 的租户/客户标记，至少一行、最多 256 行。key 文件格式见 `docs/contracts/README.md`。仓库不提供真实 secret、DSN、绑定或客户名称；绑定只能引用已经存在且同 Area/modality 的设备。
+
+管理员在事务中核对逻辑资源后，可按下列列签名配置一条视频绑定；数字 ID 是冻结事件契约使用的稳定正整数，不是把文本 ID 强转为数字：
+
+```sql
+INSERT INTO bell.event_ingress_bindings(
+  producer_id, tenant_id, site_id, device_id,
+  logical_tenant_id, logical_site_id, logical_device_id, logical_area_id,
+  modality, enabled
+) VALUES (
+  'brain-main', 1, 1, 1,
+  'tenant-logical-id', 'site-logical-id', 'device-logical-id', 'area-logical-id',
+  'video', true
+);
+```
+
+外键只负责资源存在；runtime 还会复查 Area 属于同 Site、设备当前 Area/modality 一致、Site/Area 未删除且策略允许成像。换绑或停用由管理员显式更新/删除 binding，不能修改永久来源收据。
+
+## 验证
+
+```powershell
+go -C Bell mod download
+go -C Bell test ./...
+go -C Bell vet ./...
+go -C Bell build ./...
+./scripts/test_postgres.ps1 -PgRoot D:\pgsql17
+```
+
+隔离 PostgreSQL harness 会创建临时 `bell_runtime` 登录成员，运行真实 repository、幂等冲突和不可变权限测试，然后停止并删除临时集群；不会读取或修改现有 `D:\pgsql17\data` 或 5432 服务。

Bell/cmd/bell-api/main.go

@@ -0,0 +1,227 @@
+package main
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"log/slog"
+	"net"
+	"net/http"
+	"os"
+	"os/signal"
+	"path/filepath"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/stdlib"
+
+	"yovision/bell/contracts"
+	"yovision/bell/internal/audit"
+	"yovision/bell/internal/event"
+	"yovision/bell/internal/ingress"
+	"yovision/bell/internal/store"
+)
+
+var version = "dev"
+
+type configuration struct {
+	address             string
+	dsn                 string
+	keyFile             string
+	tlsCert             string
+	tlsKey              string
+	eventIngressEnabled bool
+	eventKeyFile        string
+	forbiddenNamesFile  string
+}
+
+func main() {
+	logger := slog.New(slog.NewJSONHandler(os.Stdout, nil))
+	if err := run(logger); err != nil {
+		logger.Error("Bell stopped", "error", err)
+		os.Exit(1)
+	}
+}
+
+func loadConfiguration() (configuration, error) {
+	value := configuration{
+		address:            envOr("BELL_HTTP_ADDR", "127.0.0.1:8081"),
+		dsn:                os.Getenv("BELL_DB_DSN"),
+		keyFile:            os.Getenv("BELL_AUDIT_KEYS_FILE"),
+		tlsCert:            os.Getenv("BELL_TLS_CERT_FILE"),
+		tlsKey:             os.Getenv("BELL_TLS_KEY_FILE"),
+		eventKeyFile:       os.Getenv("BELL_EVENT_INGRESS_KEYS_FILE"),
+		forbiddenNamesFile: os.Getenv("BELL_EVIDENCE_FORBIDDEN_NAMES_FILE"),
+	}
+	switch os.Getenv("BELL_EVENT_INGRESS_ENABLED") {
+	case "", "false":
+	case "true":
+		value.eventIngressEnabled = true
+	default:
+		return configuration{}, errors.New("BELL_EVENT_INGRESS_ENABLED must be true or false")
+	}
+	if value.dsn == "" {
+		return configuration{}, errors.New("BELL_DB_DSN is required")
+	}
+	if value.keyFile == "" || !filepath.IsAbs(value.keyFile) {
+		return configuration{}, errors.New("BELL_AUDIT_KEYS_FILE must be an absolute external path")
+	}
+	host, _, err := net.SplitHostPort(value.address)
+	if err != nil {
+		return configuration{}, errors.New("invalid BELL_HTTP_ADDR")
+	}
+	ip := net.ParseIP(host)
+	loopback := host == "localhost" || (ip != nil && ip.IsLoopback())
+	if !loopback && (value.tlsCert == "" || value.tlsKey == "" || !filepath.IsAbs(value.tlsCert) || !filepath.IsAbs(value.tlsKey)) {
+		return configuration{}, errors.New("non-loopback Bell bind requires absolute TLS certificate and key paths")
+	}
+	if (value.tlsCert == "") != (value.tlsKey == "") {
+		return configuration{}, errors.New("Bell TLS certificate and key must be configured together")
+	}
+	if value.eventIngressEnabled {
+		if value.eventKeyFile == "" || !filepath.IsAbs(value.eventKeyFile) {
+			return configuration{}, errors.New("BELL_EVENT_INGRESS_KEYS_FILE must be an absolute external path when event ingress is enabled")
+		}
+		if value.forbiddenNamesFile == "" || !filepath.IsAbs(value.forbiddenNamesFile) {
+			return configuration{}, errors.New("BELL_EVIDENCE_FORBIDDEN_NAMES_FILE must be an absolute external path when event ingress is enabled")
+		}
+	}
+	return value, nil
+}
+
+func run(logger *slog.Logger) error {
+	cfg, err := loadConfiguration()
+	if err != nil {
+		return err
+	}
+	pgConfig, err := pgx.ParseConfig(cfg.dsn)
+	if err != nil {
+		return errors.New("invalid Bell postgres DSN")
+	}
+	if pgConfig.RuntimeParams == nil {
+		pgConfig.RuntimeParams = make(map[string]string)
+	}
+	pgConfig.RuntimeParams["application_name"] = "yovision-bell"
+	db := stdlib.OpenDB(*pgConfig)
+	db.SetMaxOpenConns(16)
+	db.SetMaxIdleConns(4)
+	db.SetConnMaxLifetime(30 * time.Minute)
+	defer db.Close()
+
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+	repository, err := store.OpenPostgres(ctx, db)
+	if err != nil {
+		return err
+	}
+	if err := repository.AuditRelayReady(ctx); err != nil {
+		return err
+	}
+	keys, err := audit.LoadKeys(cfg.keyFile)
+	if err != nil {
+		return err
+	}
+	handler, err := audit.NewHandler(repository, keys)
+	if err != nil {
+		return err
+	}
+	mux := http.NewServeMux()
+	mux.Handle(audit.RelayPath, handler)
+	if cfg.eventIngressEnabled {
+		if err := repository.EventIngressReady(ctx); err != nil {
+			return err
+		}
+		eventKeys, err := ingress.LoadKeys(cfg.eventKeyFile)
+		if err != nil {
+			return err
+		}
+		forbiddenNames, err := loadForbiddenNames(cfg.forbiddenNamesFile)
+		if err != nil {
+			return err
+		}
+		guard, err := event.NewEvidenceGuard(forbiddenNames...)
+		if err != nil {
+			return err
+		}
+		factory, err := event.NewFactory(contracts.EventV01Schema, event.ULIDGenerator{}, repository, guard)
+		if err != nil {
+			return err
+		}
+		eventHandler, err := ingress.NewHandler(repository, eventKeys, factory)
+		if err != nil {
+			return err
+		}
+		mux.Handle(ingress.Path, eventHandler)
+	}
+	mux.HandleFunc("GET /healthz", func(writer http.ResponseWriter, _ *http.Request) {
+		writeStatus(writer, http.StatusOK, "ok")
+	})
+	mux.HandleFunc("GET /readyz", func(writer http.ResponseWriter, request *http.Request) {
+		if err := repository.AuditRelayReady(request.Context()); err != nil {
+			writeStatus(writer, http.StatusServiceUnavailable, "not_ready")
+			return
+		}
+		if cfg.eventIngressEnabled {
+			if err := repository.EventIngressReady(request.Context()); err != nil {
+				writeStatus(writer, http.StatusServiceUnavailable, "not_ready")
+				return
+			}
+		}
+		writeStatus(writer, http.StatusOK, "ready")
+	})
+	server := &http.Server{Addr: cfg.address, Handler: mux, ReadHeaderTimeout: 5 * time.Second, ReadTimeout: 15 * time.Second, WriteTimeout: 15 * time.Second, IdleTimeout: 60 * time.Second, TLSConfig: &tls.Config{MinVersion: tls.VersionTLS12}}
+	serverErrors := make(chan error, 1)
+	go func() {
+		logger.Info("Bell listening", "address", cfg.address, "version", version, "tls_enabled", cfg.tlsCert != "")
+		if cfg.tlsCert != "" {
+			serverErrors <- server.ListenAndServeTLS(cfg.tlsCert, cfg.tlsKey)
+			return
+		}
+		serverErrors <- server.ListenAndServe()
+	}()
+	select {
+	case <-ctx.Done():
+	case serverErr := <-serverErrors:
+		if !errors.Is(serverErr, http.ErrServerClosed) {
+			return fmt.Errorf("serve Bell HTTP: %w", serverErr)
+		}
+	}
+	shutdownContext, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	return server.Shutdown(shutdownContext)
+}
+
+func loadForbiddenNames(path string) ([]string, error) {
+	raw, err := os.ReadFile(path)
+	if err != nil || len(raw) > 64<<10 {
+		return nil, errors.New("read Bell evidence forbidden-names file")
+	}
+	var values []string
+	for _, line := range strings.Split(string(raw), "\n") {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+		values = append(values, line)
+	}
+	if len(values) == 0 || len(values) > 256 {
+		return nil, errors.New("Bell evidence forbidden-names file must contain 1 to 256 names")
+	}
+	return values, nil
+}
+
+func writeStatus(writer http.ResponseWriter, status int, value string) {
+	writer.Header().Set("Content-Type", "application/json")
+	writer.WriteHeader(status)
+	_, _ = fmt.Fprintf(writer, `{"status":%q}`, value)
+}
+
+func envOr(name, fallback string) string {
+	if value := os.Getenv(name); value != "" {
+		return value
+	}
+	return fallback
+}

Bell/cmd/bell-api/main_test.go

@@ -0,0 +1,53 @@
+package main
+
+import (
+	"path/filepath"
+	"testing"
+)
+
+func TestConfigurationRequiresDatabaseAndExternalKey(t *testing.T) {
+	t.Setenv("BELL_DB_DSN", "")
+	t.Setenv("BELL_AUDIT_KEYS_FILE", "")
+	if _, err := loadConfiguration(); err == nil {
+		t.Fatal("missing Bell database was accepted")
+	}
+	t.Setenv("BELL_DB_DSN", "postgres://bell@127.0.0.1/yovision")
+	t.Setenv("BELL_AUDIT_KEYS_FILE", "relative.json")
+	if _, err := loadConfiguration(); err == nil {
+		t.Fatal("relative Bell key file was accepted")
+	}
+}
+
+func TestConfigurationRequiresTLSOutsideLoopback(t *testing.T) {
+	t.Setenv("BELL_DB_DSN", "postgres://bell@127.0.0.1/yovision")
+	t.Setenv("BELL_AUDIT_KEYS_FILE", filepath.Join(t.TempDir(), "keys.json"))
+	t.Setenv("BELL_HTTP_ADDR", "0.0.0.0:8081")
+	if _, err := loadConfiguration(); err == nil {
+		t.Fatal("remote plaintext Bell bind was accepted")
+	}
+	t.Setenv("BELL_TLS_CERT_FILE", filepath.Join(t.TempDir(), "server.crt"))
+	t.Setenv("BELL_TLS_KEY_FILE", filepath.Join(t.TempDir(), "server.key"))
+	if _, err := loadConfiguration(); err != nil {
+		t.Fatalf("remote TLS Bell bind rejected: %v", err)
+	}
+}
+
+func TestEventIngressIsDisabledByDefaultAndRequiresExternalPolicy(t *testing.T) {
+	t.Setenv("BELL_DB_DSN", "postgres://bell@127.0.0.1/yovision")
+	t.Setenv("BELL_AUDIT_KEYS_FILE", filepath.Join(t.TempDir(), "audit.json"))
+	t.Setenv("BELL_EVENT_INGRESS_ENABLED", "")
+	value, err := loadConfiguration()
+	if err != nil || value.eventIngressEnabled {
+		t.Fatalf("default event ingress configuration: %+v %v", value, err)
+	}
+	t.Setenv("BELL_EVENT_INGRESS_ENABLED", "true")
+	if _, err := loadConfiguration(); err == nil {
+		t.Fatal("event ingress without keys and evidence policy was accepted")
+	}
+	t.Setenv("BELL_EVENT_INGRESS_KEYS_FILE", filepath.Join(t.TempDir(), "event-keys.json"))
+	t.Setenv("BELL_EVIDENCE_FORBIDDEN_NAMES_FILE", filepath.Join(t.TempDir(), "names.txt"))
+	value, err = loadConfiguration()
+	if err != nil || !value.eventIngressEnabled {
+		t.Fatalf("valid event ingress configuration rejected: %+v %v", value, err)
+	}
+}

Bell/contracts/embed.go

@@ -0,0 +1,9 @@
+// Package contracts embeds the frozen event contract used by Bell.
+package contracts
+
+import _ "embed"
+
+// EventV01Schema is byte-identical to docs/raw/contracts/event-v0.1.schema.json.
+//
+//go:embed event-v0.1.schema.json
+var EventV01Schema []byte

Bell/contracts/event-v0.1.schema.json

@@ -0,0 +1,283 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://yovision.local/contracts/event-v0.1.schema.json",
+  "title": "YoVision Event Instance v0.1",
+  "description": "推理侧 → 平台侧的唯一契约。冻结于 2026-08-03。所有顶层键必须存在（可为 null），不允许省略——省略与显式 null 无法区分，是这类系统最常见的排查陷阱。",
+  "type": "object",
+  "additionalProperties": false,
+
+  "required": [
+    "schema_version",
+    "id",
+    "source_event_id",
+    "tenant_id",
+    "site_id",
+    "device_id",
+    "sensors",
+    "kind",
+    "severity",
+    "confidence",
+    "occurred_at",
+    "detected_at",
+    "latency_seconds",
+    "config_version",
+    "rule",
+    "subject",
+    "observation",
+    "evidence",
+    "dedup_key",
+    "aggregated_into",
+    "outcome",
+    "outcome_source",
+    "outcome_reason",
+    "diagnostics",
+    "ext"
+  ],
+
+  "properties": {
+    "schema_version": {
+      "description": "契约版本。破坏性变更必须递增主版本。",
+      "const": "0.1"
+    },
+
+    "id": {
+      "description": "平台侧生成的全局唯一事件 ID（ULID）。推理侧不得自行生成。",
+      "type": "string",
+      "pattern": "^evt_[0-9A-HJKMNP-TV-Z]{26}$"
+    },
+
+    "source_event_id": {
+      "description": "推理侧原始事件 ID，如 silver_pose 的 FALL-<session>-000001。用于回溯本地截图文件名（截图即按它命名）。会话内唯一，全局不保证唯一——不得用作主键。",
+      "type": "string",
+      "pattern": "^[A-Za-z0-9_-]{1,128}$"
+    },
+
+    "tenant_id": { "type": "integer", "minimum": 1 },
+    "site_id": { "type": "integer", "minimum": 1 },
+    "device_id": {
+      "description": "主传感器的平台设备实体主键。由推理侧的 source_id 经平台映射表解析得到。事件中不得冗余 RTSP 地址或任何凭据。多传感器融合事件的完整来源见 sensors。",
+      "type": "integer",
+      "minimum": 1
+    },
+
+    "sensors": {
+      "description": "参与本次判定的全部传感器。单摄像头事件为单元素数组。恰好一个元素的 role 为 primary，且其 device_id 必须等于顶层 device_id。",
+      "type": "array",
+      "minItems": 1,
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["device_id", "modality", "role"],
+        "properties": {
+          "device_id": { "type": "integer", "minimum": 1 },
+          "modality": {
+            "description": "设备模态。决定隐私区域准入：privacy_flag 为真的区域只允许非成像模态。",
+            "type": "string",
+            "enum": ["video", "radar", "contact", "button", "wearable", "other"]
+          },
+          "role": {
+            "description": "primary=判定主依据；corroborating=佐证（如雷达判跌倒、门磁佐证无人离开）。",
+            "type": "string",
+            "enum": ["primary", "corroborating"]
+          }
+        }
+      }
+    },
+
+    "kind": {
+      "description": "事件类型。取值登记在 contracts/README.md 的类型注册表中，新增类型不需要升 schema 版本。v0.1 已登记：fall。",
+      "type": "string",
+      "pattern": "^[a-z][a-z0-9_]{2,63}$"
+    },
+
+    "severity": {
+      "type": "string",
+      "enum": ["low", "medium", "high", "critical"]
+    },
+
+    "confidence": {
+      "description": "模型置信度。几何+状态机判定链路没有天然来源，必须填 null——不得用任意常量或阈值余量伪造。",
+      "type": ["number", "null"],
+      "minimum": 0,
+      "maximum": 1
+    },
+
+    "occurred_at": {
+      "description": "事发时刻（墙钟 UTC）。决定证据回捞窗口。推理侧若只有单调时钟，按 detected_at - latency_seconds 换算。",
+      "type": "string",
+      "format": "date-time"
+    },
+
+    "detected_at": {
+      "description": "判定成立时刻（墙钟 UTC）。决定 SLA 计算。必须 >= occurred_at。",
+      "type": "string",
+      "format": "date-time"
+    },
+
+    "latency_seconds": {
+      "description": "从可疑到确认的耗时。可由两时间戳相减，但显式存储：它是判定质量的直接指标——贴近确认窗口下限说明证据干脆，贴近上限是误报高发区，为误报排查的首选排序键。",
+      "type": "number",
+      "minimum": 0
+    },
+
+    "config_version": {
+      "description": "产出本事件时整套判定配置的版本。粒度高于 rule.version（阈值往往是全局的），用于调参后的回归对比。不得为空串。",
+      "type": "string",
+      "minLength": 1,
+      "maxLength": 128
+    },
+
+    "rule": {
+      "description": "命中的规则实体。推理侧无规则引擎时为 null，由平台侧按 kind 反查补全。",
+      "type": ["object", "null"],
+      "additionalProperties": false,
+      "required": ["id", "version", "code"],
+      "properties": {
+        "id": { "type": "string" },
+        "version": { "type": "integer", "minimum": 1 },
+        "code": { "type": "string" }
+      }
+    },
+
+    "subject": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["class", "track_id", "attributes", "anon_id", "identity", "identity_status"],
+      "properties": {
+        "class": { "type": "string", "enum": ["person", "vehicle", "object"] },
+        "track_id": {
+          "description": "跟踪器内的短期标识，跨会话不保证稳定。",
+          "type": "string",
+          "minLength": 1
+        },
+        "attributes": {
+          "description": "A 类属性（年龄段、着装等）。未启用时为空对象，不是 null。",
+          "type": "object"
+        },
+        "anon_id": {
+          "description": "B+ 类 ReID 匿名标识，站点内会话级有效（≤30min），不做跨日长期关联。未启用为 null。",
+          "type": ["string", "null"]
+        },
+        "identity": {
+          "description": "C 类人脸身份。仅在租户已授权且比对命中时非 null。",
+          "type": ["object", "null"],
+          "additionalProperties": false,
+          "required": ["person_id", "library_id", "score"],
+          "properties": {
+            "person_id": { "type": "string" },
+            "library_id": { "type": "string" },
+            "score": { "type": "number", "minimum": 0, "maximum": 1 }
+          }
+        },
+        "identity_status": {
+          "description": "必须显式。只写 null 无法区分「没开这功能」与「比对失败」，后者是需要排查的故障。",
+          "type": "string",
+          "enum": ["not_enabled", "pending", "matched", "below_threshold", "no_candidate", "timeout"]
+        }
+      }
+    },
+
+    "observation": {
+      "description": "结构化观测。bbox/keypoint 序列是数据闭环的唯一原料——只有视频与截图无法用于训练。",
+      "type": ["object", "null"],
+      "additionalProperties": false,
+      "required": ["zone", "dwell_sec", "bbox_seq_uri", "keypoint_seq_uri", "signal_seq_uri"],
+      "properties": {
+        "zone": { "type": ["string", "null"] },
+        "dwell_sec": { "type": ["number", "null"], "minimum": 0 },
+        "bbox_seq_uri": {
+          "description": "视觉模态专用。非视觉事件为 null。",
+          "type": ["string", "null"],
+          "format": "uri"
+        },
+        "keypoint_seq_uri": {
+          "description": "COCO-17 关键点逐帧序列（JSONL）。视觉模态专用，P1 必补项。",
+          "type": ["string", "null"],
+          "format": "uri"
+        },
+        "signal_seq_uri": {
+          "description": "非视觉模态的结构化序列（雷达点云轨迹与多普勒、门磁状态变迁等，JSONL）。与 keypoint_seq_uri 平级——两者是各自模态的数据闭环原料，缺任一模态的序列，该模态就无法参与模型迭代。",
+          "type": ["string", "null"],
+          "format": "uri"
+        }
+      }
+    },
+
+    "evidence": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["snapshot_uris", "clip_uri", "clip_range"],
+      "properties": {
+        "snapshot_uris": {
+          "description": "证据截图。**允许为空数组**：非成像模态（雷达、门磁）产出的事件本就没有画面，隐私区域更是禁止成像。不得据此假设每个事件都有图可看——值班台 UI 必须能渲染无画面事件。文件命名只允许包含事件 ID 与日期目录，绝不得含 RTSP 地址、凭据或客户名称，文件名会出现在日志、URL 与工单中。",
+          "type": "array",
+          "minItems": 0,
+          "items": { "type": "string", "format": "uri" }
+        },
+        "clip_uri": {
+          "description": "含 pre-roll 的证据片段。仅有截图不足以让值班员判断真假，是误报反馈闭环的前置条件。P1 必补项。",
+          "type": ["string", "null"],
+          "format": "uri"
+        },
+        "clip_range": {
+          "type": ["array", "null"],
+          "minItems": 2,
+          "maxItems": 2,
+          "items": { "type": "string", "format": "date-time" }
+        }
+      }
+    },
+
+    "dedup_key": {
+      "description": "跨机位/跨时间去重键，由平台侧构造。推理侧进程内按 source_event_id 的去重仍保留——它防的是同帧重复写盘，属不同层次。",
+      "type": ["string", "null"]
+    },
+
+    "aggregated_into": {
+      "description": "被合并入的事件 ID。非 null 时本事件不独立触发告警。",
+      "type": ["string", "null"],
+      "pattern": "^evt_[0-9A-HJKMNP-TV-Z]{26}$"
+    },
+
+    "outcome": {
+      "description": "处置结果。事件不可变，误判只能通过本字段标记，不得删改。subject_recovered 由推理侧状态机自动回传（确认后自行起身），无需等人工。",
+      "type": "string",
+      "enum": [
+        "unknown",
+        "true_positive",
+        "false_positive",
+        "subject_recovered",
+        "duplicate",
+        "test"
+      ]
+    },
+
+    "outcome_source": {
+      "type": ["string", "null"],
+      "enum": ["auto", "manual", null]
+    },
+
+    "outcome_reason": { "type": ["string", "null"] },
+
+    "diagnostics": {
+      "description": "推理侧内部诊断量，仅用于排查，平台不得依赖其语义。单调时钟跨进程无意义，不得用于任何时间计算。",
+      "type": ["object", "null"],
+      "additionalProperties": true,
+      "properties": {
+        "fsm_state": {
+          "type": "string",
+          "enum": ["NORMAL", "SUSPECT", "CONFIRMED", "RECOVERING"]
+        },
+        "suspected_at_monotonic": { "type": "number" },
+        "confirmed_at_monotonic": { "type": "number" },
+        "horizontal_angle_degrees": { "type": ["number", "null"] },
+        "visible_joint_count": { "type": ["integer", "null"], "minimum": 0, "maximum": 17 }
+      }
+    },
+
+    "ext": {
+      "description": "厂商/场景扩展位。根对象 additionalProperties=false，任何未登记字段一律放这里，避免为实验性字段升版本。",
+      "type": "object"
+    }
+  }
+}

Bell/go.mod

@@ -0,0 +1,19 @@
+module yovision/bell
+
+go 1.26.0
+
+toolchain go1.26.5
+
+require (
+	github.com/jackc/pgx/v5 v5.10.0
+	github.com/oklog/ulid/v2 v2.1.2
+	github.com/santhosh-tekuri/jsonschema/v6 v6.0.2
+)
+
+require (
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
+	golang.org/x/sync v0.17.0 // indirect
+	golang.org/x/text v0.29.0 // indirect
+)

Bell/go.sum

@@ -0,0 +1,33 @@
+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/dlclark/regexp2 v1.11.0 h1:G/nrcoOa7ZXlpoa/91N3X7mM3r8eIlMBBJZvsz/mxKI=
+github.com/dlclark/regexp2 v1.11.0/go.mod h1:DHkYz0B9wPfa6wondMfaivmHpzrQ3v9q8cnmRbL6yW8=
+github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
+github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 h1:iCEnooe7UlwOQYpKFhBabPMi4aNAfoODPEFNiAnClxo=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
+github.com/jackc/pgx/v5 v5.10.0 h1:VhSvgU2jSli8o3AqIEOTJr7rZwAEUVo4E4XhR94Zfr0=
+github.com/jackc/pgx/v5 v5.10.0/go.mod h1:mal1tBGAFfLHvZzaYh77YS/eC6IX9OWbRV1QIIM0Jn4=
+github.com/jackc/puddle/v2 v2.2.2 h1:PR8nw+E/1w0GLuRFSmiioY6UooMp6KJv0/61nB7icHo=
+github.com/jackc/puddle/v2 v2.2.2/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
+github.com/oklog/ulid/v2 v2.1.2 h1:IEclFb9JNvzYA6MW2SCxbLzcHTVsfqm3PrqGQJH5zec=
+github.com/oklog/ulid/v2 v2.1.2/go.mod h1:rcEKHmBBKfef9DhnvX7y1HZBYxjXb0cP5ExxNsTT1QQ=
+github.com/pborman/getopt v0.0.0-20170112200414-7148bc3a4c30/go.mod h1:85jBQOZwpVEaDAr341tbn15RS4fCAsIst0qp7i8ex1o=
+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/santhosh-tekuri/jsonschema/v6 v6.0.2 h1:KRzFb2m7YtdldCEkzs6KqmJw4nqEVZGK7IN2kJkjTuQ=
+github.com/santhosh-tekuri/jsonschema/v6 v6.0.2/go.mod h1:JXeL+ps8p7/KNMjDQk3TCwPpBy0wYklyWTfbkIzdIFU=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+golang.org/x/sync v0.17.0 h1:l60nONMj9l5drqw6jlhIELNv9I0A4OFgRsG9k2oT9Ug=
+golang.org/x/sync v0.17.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/text v0.29.0 h1:1neNs90w9YzJ9BocxfsQNHKuAT4pkghyXc4nhZ6sJvk=
+golang.org/x/text v0.29.0/go.mod h1:7MhJOA9CD2qZyOKYazxdYMF85OwPdEr9jTtBpO7ydH4=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+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=

Bell/internal/audit/audit.go

@@ -0,0 +1,363 @@
+// Package audit authenticates and validates Sense audit relay batches.
+package audit
+
+import (
+	"bytes"
+	"context"
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"io"
+	"net/http"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+	"unicode/utf8"
+)
+
+const (
+	RelayPath       = "/internal/v1/audit-events:batch"
+	MaxBatchSize    = 100
+	MaxBodyBytes    = 1 << 20
+	HeaderKeyID     = "X-YoVision-Key-Id"
+	HeaderTimestamp = "X-YoVision-Timestamp"
+	HeaderNonce     = "X-YoVision-Nonce"
+	HeaderSignature = "X-YoVision-Signature"
+)
+
+var ErrReplayConflict = errors.New("audit relay replay conflict")
+
+type Actor struct {
+	Type string `json:"type"`
+	ID   string `json:"id"`
+}
+
+type ProjectionVersions struct {
+	QuotaSourceVersion      *int64 `json:"quota_source_version"`
+	AreaPolicySourceVersion *int64 `json:"area_policy_source_version"`
+}
+
+type Event struct {
+	EventID             string             `json:"event_id"`
+	EventType           string             `json:"event_type"`
+	TenantID            string             `json:"tenant_id"`
+	SiteID              string             `json:"site_id"`
+	DeviceID            string             `json:"device_id"`
+	Actor               Actor              `json:"actor"`
+	Reason              *string            `json:"reason"`
+	TraceID             *string            `json:"trace_id"`
+	AggregateGeneration int64              `json:"aggregate_generation"`
+	ProjectionVersions  ProjectionVersions `json:"projection_versions"`
+	Data                json.RawMessage    `json:"data"`
+	OccurredAt          time.Time          `json:"occurred_at"`
+}
+
+type Envelope struct {
+	SchemaVersion int   `json:"schema_version"`
+	Event         Event `json:"event"`
+}
+
+type Result struct {
+	EventID   string  `json:"event_id"`
+	Status    string  `json:"status"`
+	ErrorCode *string `json:"error_code,omitempty"`
+}
+
+type BatchResponse struct {
+	Results []Result `json:"results"`
+}
+
+type Candidate struct {
+	Envelope   Envelope
+	RecordHash [sha256.Size]byte
+	ErrorCode  string
+}
+
+type Repository interface {
+	ProcessAuditBatch(context.Context, string, string, [sha256.Size]byte, []Candidate) ([]Result, error)
+}
+
+type Handler struct {
+	repository Repository
+	keys       map[string][]byte
+	now        func() time.Time
+}
+
+func NewHandler(repository Repository, keys map[string][]byte) (*Handler, error) {
+	if repository == nil || len(keys) == 0 {
+		return nil, errors.New("audit handler dependencies are required")
+	}
+	copyKeys := make(map[string][]byte, len(keys))
+	for id, secret := range keys {
+		if !keyIDPattern.MatchString(id) || len(secret) < 32 {
+			return nil, errors.New("invalid audit handler key")
+		}
+		copyKeys[id] = append([]byte(nil), secret...)
+	}
+	return &Handler{repository: repository, keys: copyKeys, now: time.Now}, nil
+}
+
+func (h *Handler) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
+	if request.Method != http.MethodPost || request.URL.Path != RelayPath {
+		writeError(writer, http.StatusNotFound, "not_found")
+		return
+	}
+	body, err := io.ReadAll(io.LimitReader(request.Body, MaxBodyBytes+1))
+	if err != nil || len(body) > MaxBodyBytes {
+		writeError(writer, http.StatusRequestEntityTooLarge, "payload_too_large")
+		return
+	}
+	keyID := request.Header.Get(HeaderKeyID)
+	timestamp := request.Header.Get(HeaderTimestamp)
+	nonce := request.Header.Get(HeaderNonce)
+	provided := request.Header.Get(HeaderSignature)
+	secret, ok := h.keys[keyID]
+	seconds, timestampErr := strconv.ParseInt(timestamp, 10, 64)
+	nonceBytes, nonceErr := base64.RawURLEncoding.DecodeString(nonce)
+	signatureBytes, signatureErr := base64.RawURLEncoding.DecodeString(provided)
+	if !ok || timestampErr != nil || len(timestamp) < 10 || nonceErr != nil || len(nonceBytes) < 16 || len(nonceBytes) > 48 ||
+		signatureErr != nil || len(signatureBytes) != sha256.Size || absDuration(h.now().UTC().Sub(time.Unix(seconds, 0).UTC())) > 300*time.Second {
+		writeError(writer, http.StatusUnauthorized, "unauthorized")
+		return
+	}
+	expected := signature(secret, canonicalString(request.Method, request.URL.EscapedPath(), timestamp, nonce, body))
+	if !hmac.Equal(signatureBytes, expected) {
+		writeError(writer, http.StatusUnauthorized, "unauthorized")
+		return
+	}
+	candidates, err := decodeCandidates(body)
+	if err != nil {
+		writeError(writer, http.StatusBadRequest, "invalid_batch")
+		return
+	}
+	requestHash := sha256.Sum256(body)
+	results, err := h.repository.ProcessAuditBatch(request.Context(), keyID, nonce, requestHash, candidates)
+	if errors.Is(err, ErrReplayConflict) {
+		writeError(writer, http.StatusConflict, "replay_conflict")
+		return
+	}
+	if err != nil {
+		writeError(writer, http.StatusServiceUnavailable, "temporarily_unavailable")
+		return
+	}
+	writeJSON(writer, http.StatusOK, BatchResponse{Results: results})
+}
+
+func canonicalString(method, path, timestamp, nonce string, body []byte) string {
+	digest := sha256.Sum256(body)
+	return strings.Join([]string{method, path, timestamp, nonce, hex.EncodeToString(digest[:])}, "\n")
+}
+
+func signature(secret []byte, canonical string) []byte {
+	mac := hmac.New(sha256.New, secret)
+	_, _ = mac.Write([]byte(canonical))
+	return mac.Sum(nil)
+}
+
+func absDuration(value time.Duration) time.Duration {
+	if value < 0 {
+		return -value
+	}
+	return value
+}
+
+type rawBatch struct {
+	Events []json.RawMessage `json:"events"`
+}
+
+func decodeCandidates(body []byte) ([]Candidate, error) {
+	decoder := json.NewDecoder(bytes.NewReader(body))
+	decoder.DisallowUnknownFields()
+	var batch rawBatch
+	if err := decoder.Decode(&batch); err != nil || len(batch.Events) < 1 || len(batch.Events) > MaxBatchSize {
+		return nil, errors.New("invalid audit batch")
+	}
+	var trailing any
+	if err := decoder.Decode(&trailing); !errors.Is(err, io.EOF) {
+		return nil, errors.New("invalid audit batch trailing data")
+	}
+	values := make([]Candidate, len(batch.Events))
+	for index, raw := range batch.Events {
+		values[index].RecordHash = sha256.Sum256(raw)
+		if !hasExactEnvelopeShape(raw) {
+			values[index].ErrorCode = "schema_invalid"
+			continue
+		}
+		itemDecoder := json.NewDecoder(bytes.NewReader(raw))
+		itemDecoder.DisallowUnknownFields()
+		if err := itemDecoder.Decode(&values[index].Envelope); err != nil {
+			values[index].ErrorCode = "schema_invalid"
+			continue
+		}
+		values[index].ErrorCode = validateEnvelope(values[index].Envelope)
+	}
+	return values, nil
+}
+
+var (
+	eventIDPattern   = regexp.MustCompile(`^audit_[0-9a-f]{32}$`)
+	logicalIDPattern = regexp.MustCompile(`^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$`)
+	keyIDPattern     = regexp.MustCompile(`^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$`)
+)
+
+func validateEnvelope(value Envelope) string {
+	event := value.Event
+	if (value.SchemaVersion != 1 && value.SchemaVersion != 2) || !eventIDPattern.MatchString(event.EventID) ||
+		!logicalIDPattern.MatchString(event.TenantID) || !logicalIDPattern.MatchString(event.SiteID) || !logicalIDPattern.MatchString(event.DeviceID) ||
+		event.AggregateGeneration < 1 || event.OccurredAt.IsZero() || strings.TrimSpace(event.Actor.ID) == "" || utf8.RuneCountInString(event.Actor.ID) > 200 ||
+		(event.Actor.Type != "user" && event.Actor.Type != "service" && event.Actor.Type != "system") ||
+		(event.Reason != nil && utf8.RuneCountInString(*event.Reason) > 500) || (event.TraceID != nil && utf8.RuneCountInString(*event.TraceID) > 128) ||
+		(event.ProjectionVersions.QuotaSourceVersion != nil && *event.ProjectionVersions.QuotaSourceVersion < 1) ||
+		(event.ProjectionVersions.AreaPolicySourceVersion != nil && *event.ProjectionVersions.AreaPolicySourceVersion < 1) {
+		return "schema_invalid"
+	}
+	if event.EventType != "device.created" && event.EventType != "device.desired_state.accepted" &&
+		(event.EventType != "device.configuration.accepted" || value.SchemaVersion != 2) {
+		return "schema_invalid"
+	}
+	var data map[string]any
+	if err := json.Unmarshal(event.Data, &data); err != nil || data == nil {
+		return "schema_invalid"
+	}
+	expected := map[string]string{
+		"device.created":                "device_created",
+		"device.desired_state.accepted": "desired_state_accepted",
+		"device.configuration.accepted": "configuration_accepted",
+	}[event.EventType]
+	if data["kind"] != expected || !validateData(event.EventType, data) || containsSensitiveKey(data) {
+		return "payload_invalid"
+	}
+	return ""
+}
+
+func hasExactEnvelopeShape(raw []byte) bool {
+	var envelope map[string]json.RawMessage
+	if err := json.Unmarshal(raw, &envelope); err != nil || !exactRawKeys(envelope, "schema_version", "event") {
+		return false
+	}
+	var event map[string]json.RawMessage
+	if err := json.Unmarshal(envelope["event"], &event); err != nil || !exactRawKeys(event,
+		"event_id", "event_type", "tenant_id", "site_id", "device_id", "actor", "reason", "trace_id",
+		"aggregate_generation", "projection_versions", "data", "occurred_at",
+	) {
+		return false
+	}
+	var actor, projections map[string]json.RawMessage
+	return json.Unmarshal(event["actor"], &actor) == nil && exactRawKeys(actor, "type", "id") &&
+		json.Unmarshal(event["projection_versions"], &projections) == nil && exactRawKeys(projections, "quota_source_version", "area_policy_source_version")
+}
+
+func exactRawKeys(value map[string]json.RawMessage, expected ...string) bool {
+	if len(value) != len(expected) {
+		return false
+	}
+	for _, key := range expected {
+		if _, exists := value[key]; !exists {
+			return false
+		}
+	}
+	return true
+}
+
+func validateData(eventType string, data map[string]any) bool {
+	switch eventType {
+	case "device.created":
+		if !exactAnyKeys(data, "kind", "area_id", "modality", "capabilities", "desired_state") || !logicalIDPattern.MatchString(stringValue(data["area_id"])) {
+			return false
+		}
+		if !member(stringValue(data["modality"]), "video", "radar", "contact", "button", "wearable", "other") || !member(stringValue(data["desired_state"]), "disabled", "enabled") {
+			return false
+		}
+		return validStringSet(data["capabilities"], 16, "video_capture", "audio_capture", "spatial_rule", "telemetry")
+	case "device.desired_state.accepted":
+		if !exactAnyKeys(data, "kind", "previous_desired_state", "desired_state", "changed") {
+			return false
+		}
+		_, changed := data["changed"].(bool)
+		return changed && member(stringValue(data["previous_desired_state"]), "disabled", "enabled") && member(stringValue(data["desired_state"]), "disabled", "enabled")
+	case "device.configuration.accepted":
+		if !exactAnyKeys(data, "kind", "changed", "changed_fields", "area_id") || !logicalIDPattern.MatchString(stringValue(data["area_id"])) {
+			return false
+		}
+		_, changed := data["changed"].(bool)
+		return changed && validStringSet(data["changed_fields"], 5, "name", "area_id", "endpoint_ref", "credential_ref", "profile_token")
+	default:
+		return false
+	}
+}
+
+func exactAnyKeys(value map[string]any, expected ...string) bool {
+	if len(value) != len(expected) {
+		return false
+	}
+	for _, key := range expected {
+		if _, exists := value[key]; !exists {
+			return false
+		}
+	}
+	return true
+}
+
+func stringValue(value any) string {
+	result, _ := value.(string)
+	return result
+}
+
+func member(value string, allowed ...string) bool {
+	for _, candidate := range allowed {
+		if value == candidate {
+			return true
+		}
+	}
+	return false
+}
+
+func validStringSet(value any, maximum int, allowed ...string) bool {
+	items, ok := value.([]any)
+	if !ok || len(items) > maximum {
+		return false
+	}
+	seen := make(map[string]bool, len(items))
+	for _, item := range items {
+		text, ok := item.(string)
+		if !ok || !member(text, allowed...) || seen[text] {
+			return false
+		}
+		seen[text] = true
+	}
+	return true
+}
+
+func containsSensitiveKey(value any) bool {
+	forbidden := map[string]bool{"password": true, "stream_uri": true, "mediamtx_config": true}
+	switch typed := value.(type) {
+	case map[string]any:
+		for key, child := range typed {
+			if forbidden[strings.ToLower(key)] || containsSensitiveKey(child) {
+				return true
+			}
+		}
+	case []any:
+		for _, child := range typed {
+			if containsSensitiveKey(child) {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+func writeError(writer http.ResponseWriter, status int, code string) {
+	writeJSON(writer, status, map[string]string{"error": code})
+}
+
+func writeJSON(writer http.ResponseWriter, status int, value any) {
+	writer.Header().Set("Content-Type", "application/json")
+	writer.Header().Set("Cache-Control", "no-store")
+	writer.WriteHeader(status)
+	_ = json.NewEncoder(writer).Encode(value)
+}

Bell/internal/audit/audit_test.go

@@ -0,0 +1,105 @@
+package audit
+
+import (
+	"bytes"
+	"context"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strconv"
+	"testing"
+	"time"
+)
+
+type recordingRepository struct {
+	candidates []Candidate
+	results    []Result
+	err        error
+}
+
+func (r *recordingRepository) ProcessAuditBatch(_ context.Context, _, _ string, _ [sha256.Size]byte, values []Candidate) ([]Result, error) {
+	r.candidates = values
+	return r.results, r.err
+}
+
+func validBody(t *testing.T) []byte {
+	t.Helper()
+	value := map[string]any{"events": []any{map[string]any{
+		"schema_version": 1,
+		"event": map[string]any{
+			"event_id": "audit_00000000000000000000000000000001", "event_type": "device.created",
+			"tenant_id": "tenant", "site_id": "site", "device_id": "camera-1",
+			"actor": map[string]any{"type": "system", "id": "sense"}, "reason": nil, "trace_id": nil,
+			"aggregate_generation": 1,
+			"projection_versions":  map[string]any{"quota_source_version": 1, "area_policy_source_version": 1},
+			"data":                 map[string]any{"kind": "device_created", "area_id": "area", "modality": "video", "capabilities": []any{"video_capture"}, "desired_state": "enabled"},
+			"occurred_at":          "2026-08-11T00:00:00Z",
+		},
+	}}}
+	raw, err := json.Marshal(value)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return raw
+}
+
+func signedRequest(t *testing.T, body, secret []byte, timestamp time.Time, nonce string) *http.Request {
+	t.Helper()
+	request := httptest.NewRequest(http.MethodPost, RelayPath, bytes.NewReader(body))
+	stamp := strconv.FormatInt(timestamp.Unix(), 10)
+	request.Header.Set(HeaderKeyID, "sense-a")
+	request.Header.Set(HeaderTimestamp, stamp)
+	request.Header.Set(HeaderNonce, nonce)
+	request.Header.Set(HeaderSignature, base64.RawURLEncoding.EncodeToString(signature(secret, canonicalString(http.MethodPost, RelayPath, stamp, nonce, body))))
+	return request
+}
+
+func TestHandlerAuthenticatesAndReturnsPerItemResults(t *testing.T) {
+	secret := bytes.Repeat([]byte{3}, 32)
+	repository := &recordingRepository{results: []Result{{EventID: "audit_00000000000000000000000000000001", Status: "accepted"}}}
+	handler, err := NewHandler(repository, map[string][]byte{"sense-a": secret})
+	if err != nil {
+		t.Fatal(err)
+	}
+	now := time.Date(2026, 8, 11, 0, 1, 0, 0, time.UTC)
+	handler.now = func() time.Time { return now }
+	response := httptest.NewRecorder()
+	handler.ServeHTTP(response, signedRequest(t, validBody(t), secret, now, "AAAAAAAAAAAAAAAAAAAAAA"))
+	if response.Code != http.StatusOK || len(repository.candidates) != 1 || repository.candidates[0].ErrorCode != "" {
+		t.Fatalf("valid batch rejected: status=%d candidates=%+v", response.Code, repository.candidates)
+	}
+}
+
+func TestHandlerRejectsStaleOrTamperedRequests(t *testing.T) {
+	secret := bytes.Repeat([]byte{4}, 32)
+	repository := &recordingRepository{}
+	handler, _ := NewHandler(repository, map[string][]byte{"sense-a": secret})
+	now := time.Date(2026, 8, 11, 0, 10, 0, 0, time.UTC)
+	handler.now = func() time.Time { return now }
+	for _, request := range []*http.Request{
+		signedRequest(t, validBody(t), secret, now.Add(-301*time.Second), "BBBBBBBBBBBBBBBBBBBBBB"),
+		signedRequest(t, append(validBody(t), ' '), bytes.Repeat([]byte{5}, 32), now, "CCCCCCCCCCCCCCCCCCCCCC"),
+	} {
+		response := httptest.NewRecorder()
+		handler.ServeHTTP(response, request)
+		if response.Code != http.StatusUnauthorized {
+			t.Fatalf("unsafe request returned %d", response.Code)
+		}
+	}
+}
+
+func TestDecodeCandidatesRejectsSensitiveItemWithoutRejectingBatch(t *testing.T) {
+	body := validBody(t)
+	var value map[string]any
+	_ = json.Unmarshal(body, &value)
+	events := value["events"].([]any)
+	event := events[0].(map[string]any)["event"].(map[string]any)
+	event["data"].(map[string]any)["password"] = "must-not-persist"
+	body, _ = json.Marshal(value)
+	candidates, err := decodeCandidates(body)
+	if err != nil || len(candidates) != 1 || candidates[0].ErrorCode != "payload_invalid" {
+		t.Fatalf("unexpected per-item validation: %+v %v", candidates, err)
+	}
+}

Bell/internal/audit/key.go

@@ -0,0 +1,47 @@
+package audit
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"io"
+	"os"
+)
+
+type keyDocument struct {
+	Version int `json:"version"`
+	Keys    []struct {
+		KeyID  string `json:"key_id"`
+		Secret string `json:"secret_base64url"`
+	} `json:"keys"`
+}
+
+func LoadKeys(path string) (map[string][]byte, error) {
+	raw, err := os.ReadFile(path)
+	if err != nil {
+		return nil, errors.New("read Bell audit key file")
+	}
+	var document keyDocument
+	decoder := json.NewDecoder(bytes.NewReader(raw))
+	decoder.DisallowUnknownFields()
+	if err := decoder.Decode(&document); err != nil || document.Version != 1 || len(document.Keys) == 0 {
+		return nil, errors.New("invalid Bell audit key file")
+	}
+	var trailing any
+	if err := decoder.Decode(&trailing); !errors.Is(err, io.EOF) {
+		return nil, errors.New("invalid Bell audit key file")
+	}
+	values := make(map[string][]byte, len(document.Keys))
+	for _, item := range document.Keys {
+		secret, err := base64.RawURLEncoding.DecodeString(item.Secret)
+		if err != nil || !keyIDPattern.MatchString(item.KeyID) || len(secret) < 32 {
+			return nil, errors.New("invalid Bell audit key")
+		}
+		if _, exists := values[item.KeyID]; exists {
+			return nil, errors.New("duplicate Bell audit key ID")
+		}
+		values[item.KeyID] = secret
+	}
+	return values, nil
+}

Bell/internal/event/event.go

@@ -0,0 +1,303 @@
+// Package event assembles and validates immutable Bell event facts.
+package event
+
+import (
+	"bytes"
+	"context"
+	"crypto/sha256"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"math"
+	"net"
+	"net/url"
+	"regexp"
+	"strings"
+	"time"
+
+	"github.com/oklog/ulid/v2"
+	jsonschema "github.com/santhosh-tekuri/jsonschema/v6"
+)
+
+const MaxPayloadBytes = 1 << 20
+
+type ErrorCode string
+
+const (
+	CodeInvalidJSON        ErrorCode = "invalid_json"
+	CodePayloadTooLarge    ErrorCode = "payload_too_large"
+	CodeUpstreamID         ErrorCode = "upstream_id_forbidden"
+	CodeSchema             ErrorCode = "schema_invalid"
+	CodeTimeOrder          ErrorCode = "time_order_invalid"
+	CodeLatency            ErrorCode = "latency_inconsistent"
+	CodeConfidence         ErrorCode = "confidence_forbidden"
+	CodeEvidence           ErrorCode = "evidence_unsafe"
+	CodePrimarySensor      ErrorCode = "primary_sensor_invalid"
+	CodePrivacyDenied      ErrorCode = "privacy_denied"
+	CodePrivacyUnavailable ErrorCode = "privacy_unavailable"
+)
+
+// ValidationError exposes a stable code without returning sensitive payloads.
+type ValidationError struct {
+	Code ErrorCode
+	Err  error
+}
+
+func (e *ValidationError) Error() string { return string(e.Code) }
+func (e *ValidationError) Unwrap() error { return e.Err }
+
+func validationError(code ErrorCode, err error) error {
+	return &ValidationError{Code: code, Err: err}
+}
+
+// IDGenerator is owned by Bell. Upstream candidates are not allowed to carry id.
+type IDGenerator interface {
+	NewEventID() (string, error)
+}
+
+type ULIDGenerator struct{}
+
+func (ULIDGenerator) NewEventID() (string, error) {
+	return "evt_" + ulid.Make().String(), nil
+}
+
+// PrivacyPolicy resolves the authoritative device/Area policy. Implementations
+// must fail closed when the mapping is missing or stale.
+type PrivacyPolicy interface {
+	VideoAllowed(ctx context.Context, tenantID, siteID, deviceID int64) (bool, error)
+}
+
+// EvidencePolicy checks every evidence/observation URI before persistence.
+type EvidencePolicy interface {
+	ValidateURI(rawURI string) error
+}
+
+// EvidenceGuard rejects reusable credentials, network endpoints and configured
+// customer/tenant names from persisted evidence URIs.
+type EvidenceGuard struct {
+	forbidden []string
+}
+
+func NewEvidenceGuard(forbiddenNames ...string) (*EvidenceGuard, error) {
+	guard := &EvidenceGuard{}
+	for _, name := range forbiddenNames {
+		name = strings.ToLower(strings.TrimSpace(name))
+		if name == "" {
+			return nil, errors.New("forbidden evidence name cannot be blank")
+		}
+		guard.forbidden = append(guard.forbidden, name)
+	}
+	return guard, nil
+}
+
+var ipv4Like = regexp.MustCompile(`(?:^|[^0-9])(?:[0-9]{1,3}\.){3}[0-9]{1,3}(?:[^0-9]|$)`)
+
+func (g *EvidenceGuard) ValidateURI(rawURI string) error {
+	parsed, err := url.Parse(rawURI)
+	if err != nil || parsed.Scheme == "" {
+		return errors.New("evidence URI is not absolute")
+	}
+	if parsed.User != nil || parsed.Port() != "" || parsed.RawQuery != "" || parsed.Fragment != "" {
+		return errors.New("evidence URI contains reusable connection material")
+	}
+	if host := parsed.Hostname(); host != "" && net.ParseIP(host) != nil {
+		return errors.New("evidence URI contains an IP address")
+	}
+	lower := strings.ToLower(rawURI)
+	for _, marker := range []string{"password", "passwd", "credential", "secret", "token=", "rtsp://"} {
+		if strings.Contains(lower, marker) {
+			return errors.New("evidence URI contains a forbidden marker")
+		}
+	}
+	if ipv4Like.MatchString(lower) {
+		return errors.New("evidence URI contains an IPv4-like value")
+	}
+	for _, name := range g.forbidden {
+		if strings.Contains(lower, name) {
+			return errors.New("evidence URI contains a configured sensitive name")
+		}
+	}
+	return nil
+}
+
+type Sensor struct {
+	DeviceID int64  `json:"device_id"`
+	Modality string `json:"modality"`
+	Role     string `json:"role"`
+}
+
+type storedShape struct {
+	ID             string    `json:"id"`
+	TenantID       int64     `json:"tenant_id"`
+	SiteID         int64     `json:"site_id"`
+	DeviceID       int64     `json:"device_id"`
+	SourceEventID  string    `json:"source_event_id"`
+	Sensors        []Sensor  `json:"sensors"`
+	Kind           string    `json:"kind"`
+	Severity       string    `json:"severity"`
+	Confidence     *float64  `json:"confidence"`
+	OccurredAt     time.Time `json:"occurred_at"`
+	DetectedAt     time.Time `json:"detected_at"`
+	LatencySeconds float64   `json:"latency_seconds"`
+	Observation    *struct {
+		BBoxSeqURI     *string `json:"bbox_seq_uri"`
+		KeypointSeqURI *string `json:"keypoint_seq_uri"`
+		SignalSeqURI   *string `json:"signal_seq_uri"`
+	} `json:"observation"`
+	Evidence struct {
+		SnapshotURIs []string `json:"snapshot_uris"`
+		ClipURI      *string  `json:"clip_uri"`
+	} `json:"evidence"`
+}
+
+// Event is a final, schema-valid immutable fact. JSON returns a defensive copy.
+type Event struct {
+	shape   storedShape
+	payload []byte
+	digest  [sha256.Size]byte
+}
+
+func (e Event) ID() string                { return e.shape.ID }
+func (e Event) TenantID() int64           { return e.shape.TenantID }
+func (e Event) SiteID() int64             { return e.shape.SiteID }
+func (e Event) DeviceID() int64           { return e.shape.DeviceID }
+func (e Event) SourceEventID() string     { return e.shape.SourceEventID }
+func (e Event) Sensors() []Sensor         { return append([]Sensor(nil), e.shape.Sensors...) }
+func (e Event) Kind() string              { return e.shape.Kind }
+func (e Event) Severity() string          { return e.shape.Severity }
+func (e Event) OccurredAt() time.Time     { return e.shape.OccurredAt }
+func (e Event) DetectedAt() time.Time     { return e.shape.DetectedAt }
+func (e Event) Digest() [sha256.Size]byte { return e.digest }
+func (e Event) JSON() []byte              { return bytes.Clone(e.payload) }
+
+type Factory struct {
+	schema   *jsonschema.Schema
+	ids      IDGenerator
+	privacy  PrivacyPolicy
+	evidence EvidencePolicy
+}
+
+func NewFactory(schemaJSON []byte, ids IDGenerator, privacy PrivacyPolicy, evidence EvidencePolicy) (*Factory, error) {
+	if ids == nil || privacy == nil || evidence == nil {
+		return nil, errors.New("event factory dependencies are required")
+	}
+	schemaDoc, err := jsonschema.UnmarshalJSON(bytes.NewReader(schemaJSON))
+	if err != nil {
+		return nil, fmt.Errorf("parse event schema: %w", err)
+	}
+	compiler := jsonschema.NewCompiler()
+	compiler.AssertFormat()
+	if err := compiler.AddResource("event-v0.1.schema.json", schemaDoc); err != nil {
+		return nil, fmt.Errorf("register event schema: %w", err)
+	}
+	compiled, err := compiler.Compile("event-v0.1.schema.json")
+	if err != nil {
+		return nil, fmt.Errorf("compile event schema: %w", err)
+	}
+	return &Factory{schema: compiled, ids: ids, privacy: privacy, evidence: evidence}, nil
+}
+
+// Create turns a producer candidate into the final stored v0.1 event. The
+// candidate must contain every v0.1 field except the Bell-owned id.
+func (f *Factory) Create(ctx context.Context, candidate []byte) (Event, error) {
+	if len(candidate) > MaxPayloadBytes {
+		return Event{}, validationError(CodePayloadTooLarge, nil)
+	}
+	decoder := json.NewDecoder(bytes.NewReader(candidate))
+	decoder.UseNumber()
+	var object map[string]any
+	if err := decoder.Decode(&object); err != nil || object == nil {
+		return Event{}, validationError(CodeInvalidJSON, err)
+	}
+	var trailing any
+	if err := decoder.Decode(&trailing); !errors.Is(err, io.EOF) {
+		return Event{}, validationError(CodeInvalidJSON, errors.New("multiple JSON values"))
+	}
+	if _, exists := object["id"]; exists {
+		return Event{}, validationError(CodeUpstreamID, nil)
+	}
+	id, err := f.ids.NewEventID()
+	if err != nil {
+		return Event{}, fmt.Errorf("generate Bell event id: %w", err)
+	}
+	object["id"] = id
+	payload, err := json.Marshal(object)
+	if err != nil {
+		return Event{}, validationError(CodeInvalidJSON, err)
+	}
+	if len(payload) > MaxPayloadBytes {
+		return Event{}, validationError(CodePayloadTooLarge, nil)
+	}
+	instance, err := jsonschema.UnmarshalJSON(bytes.NewReader(payload))
+	if err != nil {
+		return Event{}, validationError(CodeInvalidJSON, err)
+	}
+	if err := f.schema.Validate(instance); err != nil {
+		return Event{}, validationError(CodeSchema, nil)
+	}
+	var shape storedShape
+	if err := json.Unmarshal(payload, &shape); err != nil {
+		return Event{}, validationError(CodeInvalidJSON, err)
+	}
+	if err := f.assertSemantics(ctx, shape); err != nil {
+		return Event{}, err
+	}
+	return Event{shape: shape, payload: payload, digest: sha256.Sum256(payload)}, nil
+}
+
+func (f *Factory) assertSemantics(ctx context.Context, shape storedShape) error {
+	if shape.DetectedAt.Before(shape.OccurredAt) {
+		return validationError(CodeTimeOrder, nil)
+	}
+	actual := shape.DetectedAt.Sub(shape.OccurredAt).Seconds()
+	if math.Abs(actual-shape.LatencySeconds) >= 0.1 {
+		return validationError(CodeLatency, nil)
+	}
+	if shape.Confidence != nil {
+		return validationError(CodeConfidence, nil)
+	}
+	primary := 0
+	for _, sensor := range shape.Sensors {
+		if sensor.Role == "primary" {
+			primary++
+			if sensor.DeviceID != shape.DeviceID {
+				return validationError(CodePrimarySensor, nil)
+			}
+		}
+		if sensor.Modality == "video" {
+			allowed, err := f.privacy.VideoAllowed(ctx, shape.TenantID, shape.SiteID, sensor.DeviceID)
+			if err != nil {
+				return validationError(CodePrivacyUnavailable, nil)
+			}
+			if !allowed {
+				return validationError(CodePrivacyDenied, nil)
+			}
+		}
+	}
+	if primary != 1 {
+		return validationError(CodePrimarySensor, nil)
+	}
+	var uris []string
+	uris = append(uris, shape.Evidence.SnapshotURIs...)
+	if shape.Evidence.ClipURI != nil {
+		uris = append(uris, *shape.Evidence.ClipURI)
+	}
+	if shape.Observation != nil {
+		for _, value := range []*string{
+			shape.Observation.BBoxSeqURI,
+			shape.Observation.KeypointSeqURI,
+			shape.Observation.SignalSeqURI,
+		} {
+			if value != nil {
+				uris = append(uris, *value)
+			}
+		}
+	}
+	for _, rawURI := range uris {
+		if err := f.evidence.ValidateURI(rawURI); err != nil {
+			return validationError(CodeEvidence, nil)
+		}
+	}
+	return nil
+}

Bell/internal/event/event_test.go

@@ -0,0 +1,184 @@
+package event_test
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"yovision/bell/contracts"
+	"yovision/bell/internal/event"
+)
+
+const fixedEventID = "evt_01J8XQ2K7M3P5R9T0V4W6Y8Z2B"
+
+type fixedIDs struct{ id string }
+
+func (f fixedIDs) NewEventID() (string, error) { return f.id, nil }
+
+type privacy struct {
+	allowed bool
+	err     error
+	calls   int
+}
+
+func (p *privacy) VideoAllowed(context.Context, int64, int64, int64) (bool, error) {
+	p.calls++
+	return p.allowed, p.err
+}
+
+func contractPath(name string) string {
+	return filepath.Join("..", "..", "..", "docs", "raw", "contracts", name)
+}
+
+func candidate(t *testing.T, name string) []byte {
+	t.Helper()
+	raw, err := os.ReadFile(contractPath(name))
+	if err != nil {
+		t.Fatal(err)
+	}
+	var object map[string]any
+	if err := json.Unmarshal(raw, &object); err != nil {
+		t.Fatal(err)
+	}
+	delete(object, "id")
+	encoded, err := json.Marshal(object)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return encoded
+}
+
+func mutate(t *testing.T, raw []byte, fn func(map[string]any)) []byte {
+	t.Helper()
+	var object map[string]any
+	if err := json.Unmarshal(raw, &object); err != nil {
+		t.Fatal(err)
+	}
+	fn(object)
+	encoded, err := json.Marshal(object)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return encoded
+}
+
+func factory(t *testing.T, policy *privacy) *event.Factory {
+	t.Helper()
+	guard, err := event.NewEvidenceGuard("private-customer")
+	if err != nil {
+		t.Fatal(err)
+	}
+	value, err := event.NewFactory(contracts.EventV01Schema, fixedIDs{id: fixedEventID}, policy, guard)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return value
+}
+
+func assertCode(t *testing.T, err error, code event.ErrorCode) {
+	t.Helper()
+	var validation *event.ValidationError
+	if !errors.As(err, &validation) || validation.Code != code {
+		t.Fatalf("expected %s, got %v", code, err)
+	}
+}
+
+func TestFrozenContractCopyIsExact(t *testing.T) {
+	raw, err := os.ReadFile(contractPath("event-v0.1.schema.json"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if string(raw) != string(contracts.EventV01Schema) {
+		t.Fatal("Bell contract copy drifted from the frozen source")
+	}
+}
+
+func TestFactoryAcceptsAllFrozenExamples(t *testing.T) {
+	for _, name := range []string{
+		"event-v0.1.example-current.json",
+		"event-v0.1.example-target.json",
+		"event-v0.1.example-radar.json",
+	} {
+		t.Run(name, func(t *testing.T) {
+			policy := &privacy{allowed: true}
+			created, err := factory(t, policy).Create(context.Background(), candidate(t, name))
+			if err != nil {
+				t.Fatal(err)
+			}
+			if created.ID() != fixedEventID || len(created.JSON()) == 0 {
+				t.Fatal("Bell did not assemble the final event")
+			}
+			if name == "event-v0.1.example-radar.json" && policy.calls != 0 {
+				t.Fatal("non-video event unexpectedly consulted video policy")
+			}
+		})
+	}
+}
+
+func TestFactoryRejectsUpstreamIDAndUnknownField(t *testing.T) {
+	policy := &privacy{allowed: true}
+	base := candidate(t, "event-v0.1.example-current.json")
+	withID := mutate(t, base, func(object map[string]any) { object["id"] = fixedEventID })
+	_, err := factory(t, policy).Create(context.Background(), withID)
+	assertCode(t, err, event.CodeUpstreamID)
+
+	unknown := mutate(t, base, func(object map[string]any) { object["surprise"] = true })
+	_, err = factory(t, policy).Create(context.Background(), unknown)
+	assertCode(t, err, event.CodeSchema)
+}
+
+func TestFactoryEnforcesCrossFieldAssertions(t *testing.T) {
+	base := candidate(t, "event-v0.1.example-current.json")
+	tests := []struct {
+		name string
+		code event.ErrorCode
+		edit func(map[string]any)
+	}{
+		{"time-order", event.CodeTimeOrder, func(v map[string]any) { v["occurred_at"] = "2026-08-03T10:31:23.000Z" }},
+		{"latency", event.CodeLatency, func(v map[string]any) { v["latency_seconds"] = 9.0 }},
+		{"confidence", event.CodeConfidence, func(v map[string]any) { v["confidence"] = 0.9 }},
+		{"primary", event.CodePrimarySensor, func(v map[string]any) {
+			v["sensors"] = []any{
+				map[string]any{"device_id": float64(5012), "modality": "video", "role": "primary"},
+				map[string]any{"device_id": float64(5013), "modality": "radar", "role": "primary"},
+			}
+		}},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			_, err := factory(t, &privacy{allowed: true}).Create(context.Background(), mutate(t, base, test.edit))
+			assertCode(t, err, test.code)
+		})
+	}
+}
+
+func TestFactoryFailsClosedForPrivacyAndEvidence(t *testing.T) {
+	base := candidate(t, "event-v0.1.example-current.json")
+	_, err := factory(t, &privacy{err: errors.New("mapping unavailable")}).Create(context.Background(), base)
+	assertCode(t, err, event.CodePrivacyUnavailable)
+
+	_, err = factory(t, &privacy{allowed: false}).Create(context.Background(), base)
+	assertCode(t, err, event.CodePrivacyDenied)
+
+	unsafe := mutate(t, base, func(v map[string]any) {
+		evidence := v["evidence"].(map[string]any)
+		evidence["snapshot_uris"] = []any{"rtsp://user:password@10.0.0.1:554/private-customer.png"}
+	})
+	_, err = factory(t, &privacy{allowed: true}).Create(context.Background(), unsafe)
+	assertCode(t, err, event.CodeEvidence)
+}
+
+func TestFactoryRequiresFailClosedPoliciesAndPayloadLimit(t *testing.T) {
+	guard, err := event.NewEvidenceGuard()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := event.NewFactory(contracts.EventV01Schema, fixedIDs{id: fixedEventID}, nil, guard); err == nil {
+		t.Fatal("nil privacy policy unexpectedly accepted")
+	}
+	_, err = factory(t, &privacy{allowed: true}).Create(context.Background(), make([]byte, event.MaxPayloadBytes+1))
+	assertCode(t, err, event.CodePayloadTooLarge)
+}

Bell/internal/ingress/ingress.go

@@ -0,0 +1,270 @@
+// Package ingress authenticates Brain event candidates and delegates their
+// atomic persistence to Bell's repository.
+package ingress
+
+import (
+	"bytes"
+	"context"
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"io"
+	"net/http"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+
+	"yovision/bell/internal/event"
+)
+
+const (
+	Path            = "/internal/v1/event-candidates"
+	MaxBodyBytes    = 1 << 20
+	HeaderKeyID     = "X-YoVision-Key-Id"
+	HeaderTimestamp = "X-YoVision-Timestamp"
+	HeaderNonce     = "X-YoVision-Nonce"
+	HeaderSignature = "X-YoVision-Signature"
+)
+
+var (
+	ErrReplayConflict = errors.New("event ingress replay conflict")
+	ErrSourceConflict = errors.New("event ingress source event conflict")
+	ErrIdentityDenied = errors.New("event ingress identity denied")
+	keyIDPattern      = regexp.MustCompile(`^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$`)
+	producerIDPattern = regexp.MustCompile(`^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$`)
+)
+
+type Result struct {
+	SchemaVersion int    `json:"schema_version"`
+	ProducerID    string `json:"producer_id"`
+	SourceEventID string `json:"source_event_id"`
+	EventID       string `json:"event_id"`
+	Status        string `json:"status"`
+	HTTPStatus    int    `json:"-"`
+}
+
+type Repository interface {
+	Replay(
+		context.Context,
+		string,
+		string,
+		[sha256.Size]byte,
+		string,
+		string,
+		[sha256.Size]byte,
+	) (Result, bool, error)
+	ProcessEvent(
+		context.Context,
+		string,
+		string,
+		[sha256.Size]byte,
+		string,
+		[sha256.Size]byte,
+		event.Event,
+	) (Result, error)
+}
+
+type Handler struct {
+	repository Repository
+	keys       map[string]Key
+	factory    *event.Factory
+	now        func() time.Time
+}
+
+func NewHandler(repository Repository, keys map[string]Key, factory *event.Factory) (*Handler, error) {
+	if repository == nil || factory == nil || len(keys) == 0 {
+		return nil, errors.New("event ingress handler dependencies are required")
+	}
+	copyKeys := make(map[string]Key, len(keys))
+	for id, key := range keys {
+		if !keyIDPattern.MatchString(id) || !producerIDPattern.MatchString(key.ProducerID) || len(key.Secret) < 32 {
+			return nil, errors.New("invalid event ingress handler key")
+		}
+		copyKeys[id] = Key{ProducerID: key.ProducerID, Secret: append([]byte(nil), key.Secret...)}
+	}
+	return &Handler{repository: repository, keys: copyKeys, factory: factory, now: time.Now}, nil
+}
+
+type envelope struct {
+	SchemaVersion int             `json:"schema_version"`
+	ProducerID    string          `json:"producer_id"`
+	Candidate     json.RawMessage `json:"candidate"`
+}
+
+func (h *Handler) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
+	if request.Method != http.MethodPost || request.URL.Path != Path {
+		writeError(writer, http.StatusNotFound, "not_found", "")
+		return
+	}
+	body, err := io.ReadAll(io.LimitReader(request.Body, MaxBodyBytes+1))
+	if err != nil || len(body) > MaxBodyBytes {
+		writeError(writer, http.StatusRequestEntityTooLarge, "payload_too_large", "")
+		return
+	}
+	keyID := request.Header.Get(HeaderKeyID)
+	timestamp := request.Header.Get(HeaderTimestamp)
+	nonce := request.Header.Get(HeaderNonce)
+	provided := request.Header.Get(HeaderSignature)
+	key, ok := h.keys[keyID]
+	seconds, timestampErr := strconv.ParseInt(timestamp, 10, 64)
+	nonceBytes, nonceErr := base64.RawURLEncoding.DecodeString(nonce)
+	signatureBytes, signatureErr := base64.RawURLEncoding.DecodeString(provided)
+	if !ok || timestampErr != nil || len(timestamp) < 10 || nonceErr != nil || len(nonceBytes) < 16 || len(nonceBytes) > 48 ||
+		signatureErr != nil || len(signatureBytes) != sha256.Size || absDuration(h.now().UTC().Sub(time.Unix(seconds, 0).UTC())) > 300*time.Second {
+		writeError(writer, http.StatusUnauthorized, "unauthorized", "")
+		return
+	}
+	expected := signature(key.Secret, canonicalString(request.Method, request.URL.EscapedPath(), timestamp, nonce, body))
+	if !hmac.Equal(signatureBytes, expected) {
+		writeError(writer, http.StatusUnauthorized, "unauthorized", "")
+		return
+	}
+
+	var value envelope
+	decoder := json.NewDecoder(bytes.NewReader(body))
+	decoder.DisallowUnknownFields()
+	if err := decoder.Decode(&value); err != nil || value.SchemaVersion != 1 || !producerIDPattern.MatchString(value.ProducerID) || len(value.Candidate) == 0 {
+		writeError(writer, http.StatusBadRequest, "invalid_envelope", "")
+		return
+	}
+	var trailing any
+	if err := decoder.Decode(&trailing); !errors.Is(err, io.EOF) {
+		writeError(writer, http.StatusBadRequest, "invalid_envelope", "")
+		return
+	}
+	if value.ProducerID != key.ProducerID {
+		writeError(writer, http.StatusUnauthorized, "unauthorized", "")
+		return
+	}
+	canonicalCandidate, err := canonicalJSON(value.Candidate)
+	if err != nil {
+		writeError(writer, http.StatusBadRequest, "invalid_envelope", "")
+		return
+	}
+	sourceEventID, err := candidateSourceEventID(canonicalCandidate)
+	if err != nil {
+		writeError(writer, http.StatusUnprocessableEntity, "candidate_invalid", "schema_invalid")
+		return
+	}
+	requestHash := sha256.Sum256(body)
+	candidateHash := sha256.Sum256(canonicalCandidate)
+	replay, found, err := h.repository.Replay(
+		request.Context(), keyID, nonce, requestHash, value.ProducerID, sourceEventID, candidateHash,
+	)
+	switch {
+	case errors.Is(err, ErrReplayConflict):
+		writeError(writer, http.StatusConflict, "replay_conflict", "")
+		return
+	case errors.Is(err, ErrSourceConflict):
+		writeError(writer, http.StatusConflict, "source_event_conflict", "")
+		return
+	case err != nil:
+		writeError(writer, http.StatusServiceUnavailable, "temporarily_unavailable", "")
+		return
+	case found:
+		writeJSON(writer, replay.HTTPStatus, replay)
+		return
+	}
+	created, err := h.factory.Create(request.Context(), canonicalCandidate)
+	if err != nil {
+		handleFactoryError(writer, err)
+		return
+	}
+	result, err := h.repository.ProcessEvent(request.Context(), keyID, nonce, requestHash, value.ProducerID, candidateHash, created)
+	switch {
+	case errors.Is(err, ErrReplayConflict):
+		writeError(writer, http.StatusConflict, "replay_conflict", "")
+	case errors.Is(err, ErrSourceConflict):
+		writeError(writer, http.StatusConflict, "source_event_conflict", "")
+	case errors.Is(err, ErrIdentityDenied):
+		writeError(writer, http.StatusForbidden, "identity_denied", "")
+	case err != nil:
+		writeError(writer, http.StatusServiceUnavailable, "temporarily_unavailable", "")
+	default:
+		writeJSON(writer, result.HTTPStatus, result)
+	}
+}
+
+func handleFactoryError(writer http.ResponseWriter, err error) {
+	var validation *event.ValidationError
+	if !errors.As(err, &validation) {
+		writeError(writer, http.StatusServiceUnavailable, "temporarily_unavailable", "")
+		return
+	}
+	switch validation.Code {
+	case event.CodePayloadTooLarge:
+		writeError(writer, http.StatusRequestEntityTooLarge, "payload_too_large", "")
+	case event.CodePrivacyDenied:
+		writeError(writer, http.StatusForbidden, "privacy_denied", "")
+	case event.CodePrivacyUnavailable:
+		writeError(writer, http.StatusServiceUnavailable, "privacy_unavailable", "")
+	default:
+		writeError(writer, http.StatusUnprocessableEntity, "candidate_invalid", string(validation.Code))
+	}
+}
+
+func canonicalJSON(raw []byte) ([]byte, error) {
+	decoder := json.NewDecoder(bytes.NewReader(raw))
+	decoder.UseNumber()
+	var value any
+	if err := decoder.Decode(&value); err != nil || value == nil {
+		return nil, errors.New("invalid JSON")
+	}
+	var trailing any
+	if err := decoder.Decode(&trailing); !errors.Is(err, io.EOF) {
+		return nil, errors.New("multiple JSON values")
+	}
+	return json.Marshal(value)
+}
+
+var sourceEventIDPattern = regexp.MustCompile(`^[A-Za-z0-9_-]{1,128}$`)
+
+func candidateSourceEventID(raw []byte) (string, error) {
+	var object map[string]json.RawMessage
+	if err := json.Unmarshal(raw, &object); err != nil {
+		return "", errors.New("candidate is not an object")
+	}
+	var value string
+	if err := json.Unmarshal(object["source_event_id"], &value); err != nil || !sourceEventIDPattern.MatchString(value) {
+		return "", errors.New("candidate source event ID is invalid")
+	}
+	return value, nil
+}
+
+func canonicalString(method, path, timestamp, nonce string, body []byte) string {
+	digest := sha256.Sum256(body)
+	return strings.Join([]string{method, path, timestamp, nonce, hex.EncodeToString(digest[:])}, "\n")
+}
+
+func signature(secret []byte, canonical string) []byte {
+	mac := hmac.New(sha256.New, secret)
+	_, _ = mac.Write([]byte(canonical))
+	return mac.Sum(nil)
+}
+
+func absDuration(value time.Duration) time.Duration {
+	if value < 0 {
+		return -value
+	}
+	return value
+}
+
+func writeError(writer http.ResponseWriter, status int, code, detail string) {
+	value := map[string]string{"error": code}
+	if detail != "" {
+		value["detail_code"] = detail
+	}
+	writeJSON(writer, status, value)
+}
+
+func writeJSON(writer http.ResponseWriter, status int, value any) {
+	writer.Header().Set("Content-Type", "application/json")
+	writer.Header().Set("Cache-Control", "no-store")
+	writer.Header().Set("X-Content-Type-Options", "nosniff")
+	writer.WriteHeader(status)
+	_ = json.NewEncoder(writer).Encode(value)
+}

Bell/internal/ingress/ingress_test.go

@@ -0,0 +1,176 @@
+package ingress
+
+import (
+	"bytes"
+	"context"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strconv"
+	"testing"
+	"time"
+
+	"yovision/bell/contracts"
+	"yovision/bell/internal/event"
+)
+
+type ingressIDs struct{}
+
+func (ingressIDs) NewEventID() (string, error) {
+	return "evt_01J8XQ2K7M3P5R9T0V4W6Y8Z2B", nil
+}
+
+type ingressPrivacy struct{}
+
+func (ingressPrivacy) VideoAllowed(context.Context, int64, int64, int64) (bool, error) {
+	return true, nil
+}
+
+type fakeRepository struct {
+	replayResult Result
+	replayFound  bool
+	replayErr    error
+	processErr   error
+	processed    int
+}
+
+func (f *fakeRepository) Replay(context.Context, string, string, [sha256.Size]byte, string, string, [sha256.Size]byte) (Result, bool, error) {
+	return f.replayResult, f.replayFound, f.replayErr
+}
+
+func (f *fakeRepository) ProcessEvent(_ context.Context, _, _ string, _ [sha256.Size]byte, producer string, _ [sha256.Size]byte, value event.Event) (Result, error) {
+	f.processed++
+	if f.processErr != nil {
+		return Result{}, f.processErr
+	}
+	return Result{SchemaVersion: 1, ProducerID: producer, SourceEventID: value.SourceEventID(), EventID: value.ID(), Status: "accepted", HTTPStatus: 201}, nil
+}
+
+func ingressCandidate(t *testing.T) []byte {
+	t.Helper()
+	raw, err := os.ReadFile(filepath.Join("..", "..", "..", "docs", "raw", "contracts", "event-v0.1.example-current.json"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	var object map[string]any
+	if err := json.Unmarshal(raw, &object); err != nil {
+		t.Fatal(err)
+	}
+	delete(object, "id")
+	object["kind"] = "zone_entry"
+	object["severity"] = "medium"
+	object["evidence"] = map[string]any{"snapshot_uris": []any{}, "clip_uri": nil, "clip_range": nil}
+	encoded, err := json.Marshal(object)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return encoded
+}
+
+func newIngressHandler(t *testing.T, repository Repository) (*Handler, []byte) {
+	t.Helper()
+	guard, err := event.NewEvidenceGuard("private-customer")
+	if err != nil {
+		t.Fatal(err)
+	}
+	factory, err := event.NewFactory(contracts.EventV01Schema, ingressIDs{}, ingressPrivacy{}, guard)
+	if err != nil {
+		t.Fatal(err)
+	}
+	secret := make([]byte, 32)
+	if _, err := rand.Read(secret); err != nil {
+		t.Fatal(err)
+	}
+	handler, err := NewHandler(repository, map[string]Key{"brain-a": {ProducerID: "brain-main", Secret: secret}}, factory)
+	if err != nil {
+		t.Fatal(err)
+	}
+	handler.now = func() time.Time { return time.Unix(1_800_000_000, 0).UTC() }
+	return handler, secret
+}
+
+func signedRequest(t *testing.T, secret []byte, producer string, candidate []byte) *http.Request {
+	t.Helper()
+	body, err := json.Marshal(map[string]any{"schema_version": 1, "producer_id": producer, "candidate": json.RawMessage(candidate)})
+	if err != nil {
+		t.Fatal(err)
+	}
+	request := httptest.NewRequest(http.MethodPost, Path, bytes.NewReader(body))
+	timestamp := strconv.FormatInt(1_800_000_000, 10)
+	nonce := base64.RawURLEncoding.EncodeToString([]byte("0123456789abcdef"))
+	request.Header.Set(HeaderKeyID, "brain-a")
+	request.Header.Set(HeaderTimestamp, timestamp)
+	request.Header.Set(HeaderNonce, nonce)
+	request.Header.Set(HeaderSignature, base64.RawURLEncoding.EncodeToString(signature(secret, canonicalString(http.MethodPost, Path, timestamp, nonce, body))))
+	return request
+}
+
+func TestHandlerAcceptsSignedCandidateAndRejectsProducerSpoofing(t *testing.T) {
+	repository := &fakeRepository{}
+	handler, secret := newIngressHandler(t, repository)
+	response := httptest.NewRecorder()
+	handler.ServeHTTP(response, signedRequest(t, secret, "brain-main", ingressCandidate(t)))
+	if response.Code != http.StatusCreated || repository.processed != 1 {
+		t.Fatalf("signed candidate: status=%d body=%s processed=%d", response.Code, response.Body.String(), repository.processed)
+	}
+	var result Result
+	if err := json.Unmarshal(response.Body.Bytes(), &result); err != nil || result.Status != "accepted" || result.EventID == "" {
+		t.Fatalf("invalid accepted response: %+v %v", result, err)
+	}
+
+	response = httptest.NewRecorder()
+	handler.ServeHTTP(response, signedRequest(t, secret, "brain-spoofed", ingressCandidate(t)))
+	if response.Code != http.StatusUnauthorized || repository.processed != 1 {
+		t.Fatalf("producer spoofing was not rejected: %d %s", response.Code, response.Body.String())
+	}
+}
+
+func TestHandlerReturnsDurableReplayAndStableConflicts(t *testing.T) {
+	repository := &fakeRepository{replayFound: true, replayResult: Result{
+		SchemaVersion: 1, ProducerID: "brain-main", SourceEventID: "source-1",
+		EventID: "evt_01J8XQ2K7M3P5R9T0V4W6Y8Z2B", Status: "duplicate", HTTPStatus: 200,
+	}}
+	handler, secret := newIngressHandler(t, repository)
+	response := httptest.NewRecorder()
+	handler.ServeHTTP(response, signedRequest(t, secret, "brain-main", ingressCandidate(t)))
+	if response.Code != http.StatusOK || repository.processed != 0 {
+		t.Fatalf("durable replay did not bypass factory persistence: %d", response.Code)
+	}
+
+	repository.replayFound = false
+	repository.replayErr = ErrSourceConflict
+	response = httptest.NewRecorder()
+	handler.ServeHTTP(response, signedRequest(t, secret, "brain-main", ingressCandidate(t)))
+	if response.Code != http.StatusConflict {
+		t.Fatalf("source conflict status=%d body=%s", response.Code, response.Body.String())
+	}
+}
+
+func TestHandlerRejectsInvalidSignatureAndUpstreamPlatformID(t *testing.T) {
+	repository := &fakeRepository{}
+	handler, secret := newIngressHandler(t, repository)
+	request := signedRequest(t, secret, "brain-main", ingressCandidate(t))
+	request.Header.Set(HeaderSignature, base64.RawURLEncoding.EncodeToString(make([]byte, 32)))
+	response := httptest.NewRecorder()
+	handler.ServeHTTP(response, request)
+	if response.Code != http.StatusUnauthorized {
+		t.Fatalf("invalid signature status=%d", response.Code)
+	}
+
+	var object map[string]any
+	if err := json.Unmarshal(ingressCandidate(t), &object); err != nil {
+		t.Fatal(err)
+	}
+	object["id"] = "evt_01J8XQ2K7M3P5R9T0V4W6Y8Z2B"
+	withID, _ := json.Marshal(object)
+	response = httptest.NewRecorder()
+	handler.ServeHTTP(response, signedRequest(t, secret, "brain-main", withID))
+	if response.Code != http.StatusUnprocessableEntity || repository.processed != 0 {
+		t.Fatalf("upstream ID status=%d body=%s", response.Code, response.Body.String())
+	}
+}

Bell/internal/ingress/key.go

@@ -0,0 +1,53 @@
+package ingress
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"io"
+	"os"
+)
+
+type keyDocument struct {
+	Version int `json:"version"`
+	Keys    []struct {
+		KeyID      string `json:"key_id"`
+		ProducerID string `json:"producer_id"`
+		Secret     string `json:"secret_base64url"`
+	} `json:"keys"`
+}
+
+type Key struct {
+	ProducerID string
+	Secret     []byte
+}
+
+func LoadKeys(path string) (map[string]Key, error) {
+	raw, err := os.ReadFile(path)
+	if err != nil {
+		return nil, errors.New("read Bell event ingress key file")
+	}
+	var document keyDocument
+	decoder := json.NewDecoder(bytes.NewReader(raw))
+	decoder.DisallowUnknownFields()
+	if err := decoder.Decode(&document); err != nil || document.Version != 1 || len(document.Keys) == 0 {
+		return nil, errors.New("invalid Bell event ingress key file")
+	}
+	var trailing any
+	if err := decoder.Decode(&trailing); !errors.Is(err, io.EOF) {
+		return nil, errors.New("invalid Bell event ingress key file")
+	}
+	values := make(map[string]Key, len(document.Keys))
+	for _, item := range document.Keys {
+		secret, err := base64.RawURLEncoding.DecodeString(item.Secret)
+		if err != nil || !keyIDPattern.MatchString(item.KeyID) || !producerIDPattern.MatchString(item.ProducerID) || len(secret) < 32 {
+			return nil, errors.New("invalid Bell event ingress key")
+		}
+		if _, exists := values[item.KeyID]; exists {
+			return nil, errors.New("duplicate Bell event ingress key ID")
+		}
+		values[item.KeyID] = Key{ProducerID: item.ProducerID, Secret: append([]byte(nil), secret...)}
+	}
+	return values, nil
+}

Bell/internal/store/audit_postgres.go

@@ -0,0 +1,138 @@
+package store
+
+import (
+	"bytes"
+	"context"
+	"crypto/sha256"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+
+	"yovision/bell/internal/audit"
+)
+
+func (p *Postgres) AuditRelayReady(ctx context.Context) error {
+	var version int64
+	if err := p.db.QueryRowContext(ctx, `SELECT COALESCE(MAX(version), 0) FROM bell.schema_migrations`).Scan(&version); err != nil || version < 4 {
+		return errors.New("postgres Bell schema migration v4 is required for audit relay")
+	}
+	var auditSelect, auditInsert, auditUpdate, auditDelete, auditTruncate bool
+	var receiptUse bool
+	if err := p.db.QueryRowContext(ctx, `SELECT
+		has_table_privilege(current_user, 'bell.audit_events', 'SELECT'),
+		has_table_privilege(current_user, 'bell.audit_events', 'INSERT'),
+		has_table_privilege(current_user, 'bell.audit_events', 'UPDATE'),
+		has_table_privilege(current_user, 'bell.audit_events', 'DELETE'),
+		has_table_privilege(current_user, 'bell.audit_events', 'TRUNCATE'),
+		has_table_privilege(current_user, 'bell.audit_relay_receipts', 'SELECT,INSERT,DELETE')`).Scan(
+		&auditSelect, &auditInsert, &auditUpdate, &auditDelete, &auditTruncate, &receiptUse,
+	); err != nil {
+		return errors.New("verify Bell audit relay privileges")
+	}
+	if !auditSelect || !auditInsert || auditUpdate || auditDelete || auditTruncate || !receiptUse {
+		return errors.New("Bell audit relay privileges violate append-only boundary")
+	}
+	return nil
+}
+
+func (p *Postgres) ProcessAuditBatch(
+	ctx context.Context,
+	keyID, nonce string,
+	requestHash [sha256.Size]byte,
+	candidates []audit.Candidate,
+) ([]audit.Result, error) {
+	if len(candidates) < 1 || len(candidates) > audit.MaxBatchSize {
+		return nil, errors.New("invalid audit candidate batch")
+	}
+	tx, err := p.db.BeginTx(ctx, nil)
+	if err != nil {
+		return nil, errors.New("begin Bell audit batch")
+	}
+	defer tx.Rollback()
+	if _, err := tx.ExecContext(ctx, `SELECT pg_advisory_xact_lock(hashtext($1), hashtext($2))`, keyID, nonce); err != nil {
+		return nil, errors.New("lock Bell audit receipt")
+	}
+	if _, err := tx.ExecContext(ctx, `DELETE FROM bell.audit_relay_receipts WHERE expires_at <= clock_timestamp()`); err != nil {
+		return nil, errors.New("expire Bell audit receipts")
+	}
+	var existingHash, existingBody []byte
+	err = tx.QueryRowContext(ctx, `SELECT request_hash, response_body::text
+		FROM bell.audit_relay_receipts WHERE key_id=$1 AND nonce=$2`, keyID, nonce).Scan(&existingHash, &existingBody)
+	if err == nil {
+		if !bytes.Equal(existingHash, requestHash[:]) {
+			return nil, audit.ErrReplayConflict
+		}
+		var response audit.BatchResponse
+		if err := json.Unmarshal(existingBody, &response); err != nil {
+			return nil, errors.New("decode stored Bell audit receipt")
+		}
+		if err := tx.Commit(); err != nil {
+			return nil, errors.New("commit Bell audit replay")
+		}
+		return response.Results, nil
+	}
+	if !errors.Is(err, sql.ErrNoRows) {
+		return nil, errors.New("read Bell audit receipt")
+	}
+	results := make([]audit.Result, 0, len(candidates))
+	for _, candidate := range candidates {
+		if candidate.ErrorCode != "" {
+			code := candidate.ErrorCode
+			results = append(results, audit.Result{EventID: candidate.Envelope.Event.EventID, Status: "rejected", ErrorCode: &code})
+			continue
+		}
+		event := candidate.Envelope.Event
+		payload, err := json.Marshal(event)
+		if err != nil {
+			return nil, errors.New("encode Bell audit fact")
+		}
+		result, err := tx.ExecContext(ctx, `INSERT INTO bell.audit_events(
+			source_system, event_id, schema_version, event_type, tenant_id, site_id,
+			device_id, actor_type, actor_id, reason, trace_id, aggregate_generation,
+			quota_source_version, area_policy_source_version, payload, occurred_at, record_hash
+		) VALUES ('sense',$1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14::jsonb,$15,$16)
+		ON CONFLICT (source_system,event_id) DO NOTHING`,
+			event.EventID, candidate.Envelope.SchemaVersion, event.EventType, event.TenantID,
+			event.SiteID, event.DeviceID, event.Actor.Type, event.Actor.ID, event.Reason,
+			event.TraceID, event.AggregateGeneration,
+			event.ProjectionVersions.QuotaSourceVersion,
+			event.ProjectionVersions.AreaPolicySourceVersion,
+			payload, event.OccurredAt, candidate.RecordHash[:])
+		if err != nil {
+			return nil, fmt.Errorf("insert Bell audit fact: %w", err)
+		}
+		affected, err := result.RowsAffected()
+		if err != nil {
+			return nil, errors.New("read Bell audit insert result")
+		}
+		if affected == 1 {
+			results = append(results, audit.Result{EventID: event.EventID, Status: "accepted"})
+			continue
+		}
+		var storedHash []byte
+		if err := tx.QueryRowContext(ctx, `SELECT record_hash FROM bell.audit_events
+			WHERE source_system='sense' AND event_id=$1`, event.EventID).Scan(&storedHash); err != nil {
+			return nil, errors.New("read existing Bell audit fact")
+		}
+		if bytes.Equal(storedHash, candidate.RecordHash[:]) {
+			results = append(results, audit.Result{EventID: event.EventID, Status: "duplicate"})
+		} else {
+			code := "id_conflict"
+			results = append(results, audit.Result{EventID: event.EventID, Status: "rejected", ErrorCode: &code})
+		}
+	}
+	encoded, err := json.Marshal(audit.BatchResponse{Results: results})
+	if err != nil {
+		return nil, errors.New("encode Bell audit response")
+	}
+	if _, err := tx.ExecContext(ctx, `INSERT INTO bell.audit_relay_receipts(
+		key_id, nonce, request_hash, response_status, response_body, expires_at
+	) VALUES ($1,$2,$3,200,$4::jsonb,clock_timestamp() + interval '10 minutes')`, keyID, nonce, requestHash[:], encoded); err != nil {
+		return nil, errors.New("insert Bell audit receipt")
+	}
+	if err := tx.Commit(); err != nil {
+		return nil, errors.New("commit Bell audit batch")
+	}
+	return results, nil
+}

Bell/internal/store/audit_postgres_test.go

@@ -0,0 +1,82 @@
+package store
+
+import (
+	"context"
+	"crypto/sha256"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"os"
+	"testing"
+	"time"
+
+	_ "github.com/jackc/pgx/v5/stdlib"
+
+	"yovision/bell/internal/audit"
+)
+
+func auditCandidate(t *testing.T, eventID, actorID string) audit.Candidate {
+	t.Helper()
+	data := json.RawMessage(`{"kind":"device_created","area_id":"area","modality":"video","capabilities":["video_capture"],"desired_state":"enabled"}`)
+	value := audit.Envelope{SchemaVersion: 1, Event: audit.Event{
+		EventID: eventID, EventType: "device.created", TenantID: "tenant", SiteID: "site", DeviceID: "camera-1",
+		Actor: audit.Actor{Type: "system", ID: actorID}, AggregateGeneration: 1,
+		ProjectionVersions: audit.ProjectionVersions{}, Data: data, OccurredAt: time.Date(2026, 8, 11, 0, 0, 0, 0, time.UTC),
+	}}
+	raw, err := json.Marshal(value)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return audit.Candidate{Envelope: value, RecordHash: sha256.Sum256(raw)}
+}
+
+func TestPostgresAuditBatchReceiptAndImmutableFact(t *testing.T) {
+	dsn := os.Getenv("YOVISION_TEST_BELL_POSTGRES_DSN")
+	if dsn == "" {
+		t.Skip("YOVISION_TEST_BELL_POSTGRES_DSN is not set")
+	}
+	db, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+	ctx := context.Background()
+	repository, err := OpenPostgres(ctx, db)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := repository.AuditRelayReady(ctx); err != nil {
+		t.Fatal(err)
+	}
+
+	requestHash := sha256.Sum256([]byte("request-one"))
+	eventID := "audit_10000000000000000000000000000001"
+	results, err := repository.ProcessAuditBatch(ctx, "sense-a", "AAAAAAAAAAAAAAAAAAAAAA", requestHash, []audit.Candidate{auditCandidate(t, eventID, "sense")})
+	if err != nil || len(results) != 1 || results[0].Status != "accepted" {
+		t.Fatalf("first batch: %+v %v", results, err)
+	}
+	replayed, err := repository.ProcessAuditBatch(ctx, "sense-a", "AAAAAAAAAAAAAAAAAAAAAA", requestHash, []audit.Candidate{auditCandidate(t, eventID, "ignored-by-receipt")})
+	if err != nil || replayed[0].Status != "accepted" {
+		t.Fatalf("receipt replay: %+v %v", replayed, err)
+	}
+	different := sha256.Sum256([]byte("request-two"))
+	if _, err := repository.ProcessAuditBatch(ctx, "sense-a", "AAAAAAAAAAAAAAAAAAAAAA", different, []audit.Candidate{auditCandidate(t, eventID, "sense")}); !errors.Is(err, audit.ErrReplayConflict) {
+		t.Fatalf("expected replay conflict, got %v", err)
+	}
+
+	duplicate, err := repository.ProcessAuditBatch(ctx, "sense-a", "BBBBBBBBBBBBBBBBBBBBBB", different, []audit.Candidate{auditCandidate(t, eventID, "sense")})
+	if err != nil || duplicate[0].Status != "duplicate" {
+		t.Fatalf("event duplicate: %+v %v", duplicate, err)
+	}
+	conflictHash := sha256.Sum256([]byte("request-three"))
+	conflict, err := repository.ProcessAuditBatch(ctx, "sense-a", "CCCCCCCCCCCCCCCCCCCCCC", conflictHash, []audit.Candidate{auditCandidate(t, eventID, "other")})
+	if err != nil || conflict[0].Status != "rejected" || conflict[0].ErrorCode == nil || *conflict[0].ErrorCode != "id_conflict" {
+		t.Fatalf("event conflict: %+v %v", conflict, err)
+	}
+	if _, err := db.ExecContext(ctx, `UPDATE bell.audit_events SET actor_id='mutated' WHERE event_id=$1`, eventID); err == nil {
+		t.Fatal("runtime updated immutable audit fact")
+	}
+	if _, err := db.ExecContext(ctx, `DELETE FROM bell.audit_events WHERE event_id=$1`, eventID); err == nil {
+		t.Fatal("runtime deleted immutable audit fact")
+	}
+}

Bell/internal/store/event_ingress_postgres.go

@@ -0,0 +1,289 @@
+package store
+
+import (
+	"bytes"
+	"context"
+	"crypto/sha256"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+
+	"yovision/bell/internal/event"
+	"yovision/bell/internal/ingress"
+)
+
+func (p *Postgres) EventIngressReady(ctx context.Context) error {
+	var version int64
+	if err := p.db.QueryRowContext(ctx, `SELECT COALESCE(MAX(version), 0) FROM bell.schema_migrations`).Scan(&version); err != nil || version < 5 {
+		return errors.New("postgres Bell schema migration v5 is required for event ingress")
+	}
+	var bindingSelect bool
+	var receiptSelect, receiptInsert, receiptUpdate, receiptDelete, receiptTruncate bool
+	var nonceSelect, nonceInsert, nonceUpdate, nonceDelete, nonceTruncate bool
+	var deviceID, deviceArea, deviceModality bool
+	var deviceEndpoint, deviceCredential, deviceProfile, devicePath bool
+	var siteID, areaPolicy bool
+	err := p.db.QueryRowContext(ctx, `SELECT
+		has_table_privilege(current_user, 'bell.event_ingress_bindings', 'SELECT'),
+		has_table_privilege(current_user, 'bell.event_ingress_receipts', 'SELECT'),
+		has_table_privilege(current_user, 'bell.event_ingress_receipts', 'INSERT'),
+		has_table_privilege(current_user, 'bell.event_ingress_receipts', 'UPDATE'),
+		has_table_privilege(current_user, 'bell.event_ingress_receipts', 'DELETE'),
+		has_table_privilege(current_user, 'bell.event_ingress_receipts', 'TRUNCATE'),
+		has_table_privilege(current_user, 'bell.event_ingress_nonces', 'SELECT'),
+		has_table_privilege(current_user, 'bell.event_ingress_nonces', 'INSERT'),
+		has_table_privilege(current_user, 'bell.event_ingress_nonces', 'UPDATE'),
+		has_table_privilege(current_user, 'bell.event_ingress_nonces', 'DELETE'),
+		has_table_privilege(current_user, 'bell.event_ingress_nonces', 'TRUNCATE'),
+		has_column_privilege(current_user, 'sense.devices', 'id', 'SELECT'),
+		has_column_privilege(current_user, 'sense.devices', 'area_id', 'SELECT'),
+		has_column_privilege(current_user, 'sense.devices', 'modality', 'SELECT'),
+		has_column_privilege(current_user, 'sense.devices', 'endpoint_ref', 'SELECT'),
+		has_column_privilege(current_user, 'sense.devices', 'credential_ref', 'SELECT'),
+		has_column_privilege(current_user, 'sense.devices', 'profile_token', 'SELECT'),
+		has_column_privilege(current_user, 'sense.devices', 'path_name', 'SELECT'),
+		has_column_privilege(current_user, 'bell.sites', 'id', 'SELECT'),
+		has_column_privilege(current_user, 'bell.areas', 'capture_policy', 'SELECT')`).Scan(
+		&bindingSelect,
+		&receiptSelect, &receiptInsert, &receiptUpdate, &receiptDelete, &receiptTruncate,
+		&nonceSelect, &nonceInsert, &nonceUpdate, &nonceDelete, &nonceTruncate,
+		&deviceID, &deviceArea, &deviceModality,
+		&deviceEndpoint, &deviceCredential, &deviceProfile, &devicePath,
+		&siteID, &areaPolicy,
+	)
+	if err != nil {
+		return errors.New("verify Bell event ingress privileges")
+	}
+	if !bindingSelect || !receiptSelect || !receiptInsert || receiptUpdate || receiptDelete || receiptTruncate ||
+		!nonceSelect || !nonceInsert || nonceUpdate || !nonceDelete || nonceTruncate ||
+		!deviceID || !deviceArea || !deviceModality || deviceEndpoint || deviceCredential || deviceProfile || devicePath ||
+		!siteID || !areaPolicy {
+		return errors.New("Bell event ingress privileges violate append-only boundary")
+	}
+	return nil
+}
+
+// VideoAllowed implements event.PrivacyPolicy using current Bell/Sense facts.
+// Exact producer ownership is checked again in ProcessEvent.
+func (p *Postgres) VideoAllowed(ctx context.Context, tenantID, siteID, deviceID int64) (bool, error) {
+	return bindingAllowed(ctx, p.db, "", tenantID, siteID, deviceID, "video")
+}
+
+type rowQuerier interface {
+	QueryRowContext(context.Context, string, ...any) *sql.Row
+}
+
+func bindingAllowed(
+	ctx context.Context,
+	query rowQuerier,
+	producerID string,
+	tenantID, siteID, deviceID int64,
+	modality string,
+) (bool, error) {
+	producerClause := ""
+	arguments := []any{tenantID, siteID, deviceID, modality}
+	if producerID != "" {
+		producerClause = " AND binding.producer_id=$5"
+		arguments = append(arguments, producerID)
+	}
+	statement := `SELECT EXISTS (
+		SELECT 1
+		FROM bell.event_ingress_bindings AS binding
+		JOIN bell.sites AS site
+		  ON site.tenant_id=binding.logical_tenant_id
+		 AND site.id=binding.logical_site_id
+		JOIN bell.areas AS area
+		  ON area.tenant_id=binding.logical_tenant_id
+		 AND area.site_id=binding.logical_site_id
+		 AND area.id=binding.logical_area_id
+		JOIN sense.devices AS device
+		  ON device.tenant_id=binding.logical_tenant_id
+		 AND device.site_id=binding.logical_site_id
+		 AND device.id=binding.logical_device_id
+		 AND device.area_id=binding.logical_area_id
+		 AND device.modality=binding.modality
+		WHERE binding.tenant_id=$1 AND binding.site_id=$2 AND binding.device_id=$3
+		  AND binding.modality=$4 AND binding.enabled
+		  AND site.deleted_at IS NULL AND area.deleted_at IS NULL
+		  AND (binding.modality <> 'video' OR area.capture_policy='video_allowed')` + producerClause + `
+	)`
+	var allowed bool
+	if err := query.QueryRowContext(ctx, statement, arguments...).Scan(&allowed); err != nil {
+		return false, fmt.Errorf("resolve Bell event ingress binding: %w", err)
+	}
+	return allowed, nil
+}
+
+func (p *Postgres) Replay(
+	ctx context.Context,
+	keyID, nonce string,
+	requestHash [sha256.Size]byte,
+	producerID, sourceEventID string,
+	candidateHash [sha256.Size]byte,
+) (ingress.Result, bool, error) {
+	tx, err := p.db.BeginTx(ctx, nil)
+	if err != nil {
+		return ingress.Result{}, false, errors.New("begin Bell event replay check")
+	}
+	defer tx.Rollback()
+	if err := lockIngress(ctx, tx, keyID, nonce, producerID, sourceEventID); err != nil {
+		return ingress.Result{}, false, err
+	}
+	if _, err := tx.ExecContext(ctx, `DELETE FROM bell.event_ingress_nonces WHERE expires_at <= clock_timestamp()`); err != nil {
+		return ingress.Result{}, false, errors.New("expire Bell event ingress nonces")
+	}
+	if value, found, err := readNonce(ctx, tx, keyID, nonce, requestHash); err != nil || found {
+		if err == nil {
+			err = tx.Commit()
+		}
+		return value, found, err
+	}
+	var storedHash []byte
+	var eventID string
+	err = tx.QueryRowContext(ctx, `SELECT candidate_hash, event_id
+		FROM bell.event_ingress_receipts WHERE producer_id=$1 AND source_event_id=$2`, producerID, sourceEventID).Scan(&storedHash, &eventID)
+	if err == nil {
+		if !bytes.Equal(storedHash, candidateHash[:]) {
+			return ingress.Result{}, false, ingress.ErrSourceConflict
+		}
+		value := ingress.Result{SchemaVersion: 1, ProducerID: producerID, SourceEventID: sourceEventID, EventID: eventID, Status: "duplicate", HTTPStatus: 200}
+		if err := insertNonce(ctx, tx, keyID, nonce, requestHash, value); err != nil {
+			return ingress.Result{}, false, err
+		}
+		if err := tx.Commit(); err != nil {
+			return ingress.Result{}, false, errors.New("commit Bell source replay")
+		}
+		return value, true, nil
+	}
+	if !errors.Is(err, sql.ErrNoRows) {
+		return ingress.Result{}, false, errors.New("read Bell event source receipt")
+	}
+	if err := tx.Commit(); err != nil {
+		return ingress.Result{}, false, errors.New("commit Bell event replay miss")
+	}
+	return ingress.Result{}, false, nil
+}
+
+func (p *Postgres) ProcessEvent(
+	ctx context.Context,
+	keyID, nonce string,
+	requestHash [sha256.Size]byte,
+	producerID string,
+	candidateHash [sha256.Size]byte,
+	value event.Event,
+) (ingress.Result, error) {
+	tx, err := p.db.BeginTx(ctx, nil)
+	if err != nil {
+		return ingress.Result{}, errors.New("begin Bell event ingress")
+	}
+	defer tx.Rollback()
+	if err := lockIngress(ctx, tx, keyID, nonce, producerID, value.SourceEventID()); err != nil {
+		return ingress.Result{}, err
+	}
+	if _, err := tx.ExecContext(ctx, `DELETE FROM bell.event_ingress_nonces WHERE expires_at <= clock_timestamp()`); err != nil {
+		return ingress.Result{}, errors.New("expire Bell event ingress nonces")
+	}
+	if replay, found, err := readNonce(ctx, tx, keyID, nonce, requestHash); err != nil || found {
+		if err == nil {
+			err = tx.Commit()
+		}
+		return replay, err
+	}
+	var storedHash []byte
+	var storedEventID string
+	err = tx.QueryRowContext(ctx, `SELECT candidate_hash, event_id
+		FROM bell.event_ingress_receipts WHERE producer_id=$1 AND source_event_id=$2`, producerID, value.SourceEventID()).Scan(&storedHash, &storedEventID)
+	if err == nil {
+		if !bytes.Equal(storedHash, candidateHash[:]) {
+			return ingress.Result{}, ingress.ErrSourceConflict
+		}
+		result := ingress.Result{SchemaVersion: 1, ProducerID: producerID, SourceEventID: value.SourceEventID(), EventID: storedEventID, Status: "duplicate", HTTPStatus: 200}
+		if err := insertNonce(ctx, tx, keyID, nonce, requestHash, result); err != nil {
+			return ingress.Result{}, err
+		}
+		if err := tx.Commit(); err != nil {
+			return ingress.Result{}, errors.New("commit Bell source duplicate")
+		}
+		return result, nil
+	}
+	if !errors.Is(err, sql.ErrNoRows) {
+		return ingress.Result{}, errors.New("read Bell event source receipt")
+	}
+	for _, sensor := range value.Sensors() {
+		allowed, err := bindingAllowed(ctx, tx, producerID, value.TenantID(), value.SiteID(), sensor.DeviceID, sensor.Modality)
+		if err != nil {
+			return ingress.Result{}, err
+		}
+		if !allowed {
+			return ingress.Result{}, ingress.ErrIdentityDenied
+		}
+	}
+	digest := value.Digest()
+	if _, err := tx.ExecContext(ctx, `INSERT INTO bell.events(
+		id, tenant_id, site_id, device_id, source_event_id, kind, severity,
+		occurred_at, detected_at, payload_hash, payload
+	) VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11::jsonb)`,
+		value.ID(), value.TenantID(), value.SiteID(), value.DeviceID(), value.SourceEventID(),
+		value.Kind(), value.Severity(), value.OccurredAt(), value.DetectedAt(), digest[:], value.JSON(),
+	); err != nil {
+		return ingress.Result{}, fmt.Errorf("insert Bell ingress event: %w", err)
+	}
+	if _, err := tx.ExecContext(ctx, `INSERT INTO bell.event_ingress_receipts(
+		producer_id, source_event_id, candidate_hash, event_id
+	) VALUES ($1,$2,$3,$4)`, producerID, value.SourceEventID(), candidateHash[:], value.ID()); err != nil {
+		return ingress.Result{}, fmt.Errorf("insert Bell event source receipt: %w", err)
+	}
+	result := ingress.Result{SchemaVersion: 1, ProducerID: producerID, SourceEventID: value.SourceEventID(), EventID: value.ID(), Status: "accepted", HTTPStatus: 201}
+	if err := insertNonce(ctx, tx, keyID, nonce, requestHash, result); err != nil {
+		return ingress.Result{}, err
+	}
+	if err := tx.Commit(); err != nil {
+		return ingress.Result{}, errors.New("commit Bell event ingress")
+	}
+	return result, nil
+}
+
+func lockIngress(ctx context.Context, tx *sql.Tx, keyID, nonce, producerID, sourceEventID string) error {
+	for _, value := range []string{"event-nonce:" + keyID + ":" + nonce, "event-source:" + producerID + ":" + sourceEventID} {
+		if _, err := tx.ExecContext(ctx, `SELECT pg_advisory_xact_lock(hashtextextended($1, 0))`, value); err != nil {
+			return errors.New("lock Bell event ingress identity")
+		}
+	}
+	return nil
+}
+
+func readNonce(ctx context.Context, tx *sql.Tx, keyID, nonce string, requestHash [sha256.Size]byte) (ingress.Result, bool, error) {
+	var storedHash, body []byte
+	var status int
+	err := tx.QueryRowContext(ctx, `SELECT request_hash, response_status, response_body::text
+		FROM bell.event_ingress_nonces WHERE key_id=$1 AND nonce=$2`, keyID, nonce).Scan(&storedHash, &status, &body)
+	if errors.Is(err, sql.ErrNoRows) {
+		return ingress.Result{}, false, nil
+	}
+	if err != nil {
+		return ingress.Result{}, false, errors.New("read Bell event ingress nonce")
+	}
+	if !bytes.Equal(storedHash, requestHash[:]) {
+		return ingress.Result{}, false, ingress.ErrReplayConflict
+	}
+	var value ingress.Result
+	if err := json.Unmarshal(body, &value); err != nil {
+		return ingress.Result{}, false, errors.New("decode Bell event ingress nonce")
+	}
+	value.HTTPStatus = status
+	return value, true, nil
+}
+
+func insertNonce(ctx context.Context, tx *sql.Tx, keyID, nonce string, requestHash [sha256.Size]byte, value ingress.Result) error {
+	body, err := json.Marshal(value)
+	if err != nil {
+		return errors.New("encode Bell event ingress response")
+	}
+	if _, err := tx.ExecContext(ctx, `INSERT INTO bell.event_ingress_nonces(
+		key_id, nonce, request_hash, response_status, response_body, expires_at
+	) VALUES ($1,$2,$3,$4,$5::jsonb,clock_timestamp() + interval '10 minutes')`, keyID, nonce, requestHash[:], value.HTTPStatus, body); err != nil {
+		return errors.New("insert Bell event ingress nonce")
+	}
+	return nil
+}

Bell/internal/store/event_ingress_postgres_test.go

@@ -0,0 +1,197 @@
+package store
+
+import (
+	"context"
+	"crypto/sha256"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"os"
+	"sync"
+	"testing"
+	"time"
+
+	_ "github.com/jackc/pgx/v5/stdlib"
+
+	"yovision/bell/contracts"
+	"yovision/bell/internal/event"
+	"yovision/bell/internal/ingress"
+)
+
+type ingressStoreIDs struct{ id string }
+
+func (value ingressStoreIDs) NewEventID() (string, error) { return value.id, nil }
+
+func ingressStoreCandidate(t *testing.T, sourceEventID string) []byte {
+	t.Helper()
+	var object map[string]any
+	if err := json.Unmarshal(testCandidate(t, "brain-demo-v1"), &object); err != nil {
+		t.Fatal(err)
+	}
+	object["source_event_id"] = sourceEventID
+	object["tenant_id"] = float64(101)
+	object["site_id"] = float64(201)
+	object["device_id"] = float64(301)
+	object["sensors"] = []any{map[string]any{"device_id": float64(301), "modality": "video", "role": "primary"}}
+	object["kind"] = "zone_entry"
+	object["severity"] = "medium"
+	object["evidence"] = map[string]any{"snapshot_uris": []any{}, "clip_uri": nil, "clip_range": nil}
+	encoded, err := json.Marshal(object)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return encoded
+}
+
+func ingressStoreEvent(t *testing.T, repository *Postgres, id, sourceEventID string) event.Event {
+	t.Helper()
+	guard, err := event.NewEvidenceGuard("private-customer")
+	if err != nil {
+		t.Fatal(err)
+	}
+	factory, err := event.NewFactory(contracts.EventV01Schema, ingressStoreIDs{id}, repository, guard)
+	if err != nil {
+		t.Fatal(err)
+	}
+	value, err := factory.Create(context.Background(), ingressStoreCandidate(t, sourceEventID))
+	if err != nil {
+		t.Fatal(err)
+	}
+	return value
+}
+
+func TestPostgresEventIngressAtomicSourceReceipt(t *testing.T) {
+	dsn := os.Getenv("YOVISION_TEST_BELL_POSTGRES_DSN")
+	adminDSN := os.Getenv("YOVISION_TEST_POSTGRES_ADMIN_DSN")
+	if dsn == "" || adminDSN == "" {
+		t.Skip("Bell runtime and admin PostgreSQL DSNs are not set")
+	}
+	admin, err := sql.Open("pgx", adminDSN)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer admin.Close()
+	ctx := context.Background()
+	now := time.Now().UTC()
+	statements := []struct {
+		query string
+		args  []any
+	}{
+		{`INSERT INTO bell.sites(tenant_id,id,name) VALUES ('ingress-tenant','ingress-site','Ingress Site')`, nil},
+		{`INSERT INTO bell.areas(tenant_id,site_id,id,name,capture_policy) VALUES ('ingress-tenant','ingress-site','ingress-area','Ingress Area','video_allowed')`, nil},
+		{`INSERT INTO sense.devices(id,tenant_id,site_id,serial_number,name,modality,desired_state,actual_state,area_id,created_at,updated_at)
+		 VALUES ('ingress-device','ingress-tenant','ingress-site','INGRESS-SERIAL','Ingress Device','video','enabled','online','ingress-area',$1,$1)`, []any{now}},
+		{`INSERT INTO bell.event_ingress_bindings(
+		 producer_id,tenant_id,site_id,device_id,logical_tenant_id,logical_site_id,logical_device_id,logical_area_id,modality
+		 ) VALUES ('brain-main',101,201,301,'ingress-tenant','ingress-site','ingress-device','ingress-area','video')`, nil},
+	}
+	for _, statement := range statements {
+		if _, err := admin.ExecContext(ctx, statement.query, statement.args...); err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	db, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+	repository, err := OpenPostgres(ctx, db)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := repository.EventIngressReady(ctx); err != nil {
+		t.Fatal(err)
+	}
+	candidate := ingressStoreCandidate(t, "BRN-ingress-0001")
+	candidateHash := sha256.Sum256(candidate)
+	value := ingressStoreEvent(t, repository, "evt_01J8XQ2K7M3P5R9T0V4W6Y8Z2C", "BRN-ingress-0001")
+	requestHash := sha256.Sum256([]byte("first-request"))
+	result, err := repository.ProcessEvent(ctx, "brain-a", "AAAAAAAAAAAAAAAAAAAAAA", requestHash, "brain-main", candidateHash, value)
+	if err != nil || result.Status != "accepted" || result.HTTPStatus != 201 {
+		t.Fatalf("first ingress: %+v %v", result, err)
+	}
+
+	// This is the crash-after-Bell-commit case: Brain uses a new nonce before
+	// it has locally recorded the first response.
+	replayed, found, err := repository.Replay(
+		ctx, "brain-a", "BBBBBBBBBBBBBBBBBBBBBB", sha256.Sum256([]byte("retry-request")),
+		"brain-main", "BRN-ingress-0001", candidateHash,
+	)
+	if err != nil || !found || replayed.Status != "duplicate" || replayed.EventID != result.EventID {
+		t.Fatalf("durable source replay: %+v found=%v err=%v", replayed, found, err)
+	}
+	conflictHash := sha256.Sum256([]byte("changed-candidate"))
+	if _, _, err := repository.Replay(
+		ctx, "brain-a", "CCCCCCCCCCCCCCCCCCCCCC", sha256.Sum256([]byte("conflict-request")),
+		"brain-main", "BRN-ingress-0001", conflictHash,
+	); !errors.Is(err, ingress.ErrSourceConflict) {
+		t.Fatalf("expected source conflict, got %v", err)
+	}
+	if _, _, err := repository.Replay(
+		ctx, "brain-a", "AAAAAAAAAAAAAAAAAAAAAA", sha256.Sum256([]byte("different-request")),
+		"brain-main", "BRN-ingress-0001", candidateHash,
+	); !errors.Is(err, ingress.ErrReplayConflict) {
+		t.Fatalf("expected nonce replay conflict, got %v", err)
+	}
+
+	var wait sync.WaitGroup
+	errorsSeen := make(chan error, 8)
+	concurrentValues := make([]event.Event, 8)
+	for index := range concurrentValues {
+		id := fmt.Sprintf("evt_01J8XQ2K7M3P5R9T0V4W6Y8Z2%c", "DEFGHJKM"[index])
+		concurrentValues[index] = ingressStoreEvent(t, repository, id, "BRN-ingress-0001")
+	}
+	for index := 0; index < 8; index++ {
+		wait.Add(1)
+		go func(index int) {
+			defer wait.Done()
+			nonce := base64Nonce(index)
+			response, err := repository.ProcessEvent(
+				ctx, "brain-a", nonce, sha256.Sum256([]byte(nonce)), "brain-main", candidateHash, concurrentValues[index],
+			)
+			if err != nil || response.Status != "duplicate" || response.EventID != result.EventID {
+				errorsSeen <- fmt.Errorf("concurrent duplicate %d: %+v %w", index, response, err)
+			}
+		}(index)
+	}
+	wait.Wait()
+	close(errorsSeen)
+	for err := range errorsSeen {
+		t.Error(err)
+	}
+	var eventCount, receiptCount int
+	if err := db.QueryRowContext(ctx, `SELECT
+		(SELECT count(*) FROM bell.events WHERE tenant_id=101 AND site_id=201 AND source_event_id='BRN-ingress-0001'),
+		(SELECT count(*) FROM bell.event_ingress_receipts WHERE producer_id='brain-main' AND source_event_id='BRN-ingress-0001')`).Scan(&eventCount, &receiptCount); err != nil {
+		t.Fatal(err)
+	}
+	if eventCount != 1 || receiptCount != 1 {
+		t.Fatalf("concurrent ingress created events=%d receipts=%d", eventCount, receiptCount)
+	}
+
+	if _, err := admin.ExecContext(ctx, `UPDATE bell.areas SET capture_policy='non_imaging_only'
+		WHERE tenant_id='ingress-tenant' AND id='ingress-area'`); err != nil {
+		t.Fatal(err)
+	}
+	allowed, err := repository.VideoAllowed(ctx, 101, 201, 301)
+	if err != nil || allowed {
+		t.Fatalf("privacy change did not fail closed: allowed=%v err=%v", allowed, err)
+	}
+	guard, _ := event.NewEvidenceGuard("private-customer")
+	factory, _ := event.NewFactory(contracts.EventV01Schema, ingressStoreIDs{"evt_01J8XQ2K7M3P5R9T0V4W6Y8Z2N"}, repository, guard)
+	_, err = factory.Create(ctx, ingressStoreCandidate(t, "BRN-ingress-0002"))
+	var validation *event.ValidationError
+	if !errors.As(err, &validation) || validation.Code != event.CodePrivacyDenied {
+		t.Fatalf("privacy denial code drift: %v", err)
+	}
+	if _, err := db.ExecContext(ctx, `UPDATE bell.event_ingress_receipts SET event_id=event_id
+		WHERE producer_id='brain-main' AND source_event_id='BRN-ingress-0001'`); err == nil {
+		t.Fatal("runtime updated immutable event source receipt")
+	}
+}
+
+func base64Nonce(index int) string {
+	return fmt.Sprintf("D%021d", index)
+}

Bell/internal/store/postgres.go

@@ -0,0 +1,149 @@
+package store
+
+import (
+	"bytes"
+	"context"
+	"crypto/sha256"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"regexp"
+	"time"
+	"unicode/utf8"
+
+	"yovision/bell/internal/event"
+)
+
+var ErrConflict = errors.New("immutable record id conflict")
+
+type Postgres struct {
+	db *sql.DB
+}
+
+func OpenPostgres(ctx context.Context, db *sql.DB) (*Postgres, error) {
+	if db == nil {
+		return nil, errors.New("postgres database is required")
+	}
+	if err := db.PingContext(ctx); err != nil {
+		return nil, fmt.Errorf("ping Bell postgres: %w", err)
+	}
+	var version int64
+	if err := db.QueryRowContext(ctx, `SELECT COALESCE(MAX(version), 0) FROM bell.schema_migrations`).Scan(&version); err != nil || version < 3 {
+		return nil, errors.New("postgres Bell schema migration v3 is required")
+	}
+	var canInsert, canSelect, canUpdate, canDelete, canTruncate bool
+	if err := db.QueryRowContext(ctx, `SELECT
+		has_table_privilege(current_user, 'bell.events', 'INSERT'),
+		has_table_privilege(current_user, 'bell.events', 'SELECT'),
+		has_table_privilege(current_user, 'bell.events', 'UPDATE'),
+		has_table_privilege(current_user, 'bell.events', 'DELETE'),
+		has_table_privilege(current_user, 'bell.events', 'TRUNCATE')`).Scan(
+		&canInsert, &canSelect, &canUpdate, &canDelete, &canTruncate,
+	); err != nil {
+		return nil, fmt.Errorf("inspect Bell event privileges: %w", err)
+	}
+	if !canInsert || !canSelect || canUpdate || canDelete || canTruncate {
+		return nil, errors.New("Bell runtime event privileges violate append-only boundary")
+	}
+	return &Postgres{db: db}, nil
+}
+
+// InsertEvent is idempotent only for the same platform ID and exact payload.
+func (p *Postgres) InsertEvent(ctx context.Context, value event.Event) (bool, error) {
+	digest := value.Digest()
+	result, err := p.db.ExecContext(ctx, `INSERT INTO bell.events(
+		id, tenant_id, site_id, device_id, source_event_id, kind, severity,
+		occurred_at, detected_at, payload_hash, payload
+	) VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11::jsonb)
+	ON CONFLICT (id) DO NOTHING`,
+		value.ID(), value.TenantID(), value.SiteID(), value.DeviceID(),
+		value.SourceEventID(), value.Kind(), value.Severity(), value.OccurredAt(),
+		value.DetectedAt(), digest[:], value.JSON(),
+	)
+	if err != nil {
+		return false, fmt.Errorf("insert immutable Bell event: %w", err)
+	}
+	rows, err := result.RowsAffected()
+	if err != nil {
+		return false, fmt.Errorf("read Bell event insert result: %w", err)
+	}
+	if rows == 1 {
+		return true, nil
+	}
+	var existing []byte
+	if err := p.db.QueryRowContext(ctx, `SELECT payload_hash FROM bell.events WHERE id=$1`, value.ID()).Scan(&existing); err != nil {
+		return false, fmt.Errorf("read existing Bell event digest: %w", err)
+	}
+	if !bytes.Equal(existing, digest[:]) {
+		return false, ErrConflict
+	}
+	return false, nil
+}
+
+type Outcome struct {
+	ID         string    `json:"id"`
+	EventID    string    `json:"event_id"`
+	Value      string    `json:"outcome"`
+	Source     string    `json:"source"`
+	Reason     *string   `json:"reason"`
+	ActorType  string    `json:"actor_type"`
+	ActorID    string    `json:"actor_id"`
+	OccurredAt time.Time `json:"occurred_at"`
+}
+
+var outcomeID = regexp.MustCompile(`^out_[0-9A-HJKMNP-TV-Z]{26}$`)
+var eventID = regexp.MustCompile(`^evt_[0-9A-HJKMNP-TV-Z]{26}$`)
+
+func (o Outcome) validate() error {
+	if !outcomeID.MatchString(o.ID) || !eventID.MatchString(o.EventID) || o.ActorID == "" || o.OccurredAt.IsZero() {
+		return errors.New("invalid outcome identity")
+	}
+	validOutcome := map[string]bool{"unknown": true, "true_positive": true, "false_positive": true, "subject_recovered": true, "duplicate": true, "test": true}
+	if !validOutcome[o.Value] || (o.Source != "auto" && o.Source != "manual") {
+		return errors.New("invalid outcome value or source")
+	}
+	if o.ActorType != "user" && o.ActorType != "service" && o.ActorType != "system" {
+		return errors.New("invalid outcome actor type")
+	}
+	if o.Reason != nil && utf8.RuneCountInString(*o.Reason) > 500 {
+		return errors.New("outcome reason is too long")
+	}
+	return nil
+}
+
+// AppendOutcome never mutates the event or an earlier outcome record.
+func (p *Postgres) AppendOutcome(ctx context.Context, value Outcome) (bool, error) {
+	if err := value.validate(); err != nil {
+		return false, err
+	}
+	encoded, err := json.Marshal(value)
+	if err != nil {
+		return false, fmt.Errorf("encode outcome: %w", err)
+	}
+	digest := sha256.Sum256(encoded)
+	result, err := p.db.ExecContext(ctx, `INSERT INTO bell.event_outcomes(
+		id, event_id, outcome, outcome_source, reason, actor_type, actor_id,
+		occurred_at, record_hash
+	) VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9)
+	ON CONFLICT (id) DO NOTHING`, value.ID, value.EventID, value.Value, value.Source,
+		value.Reason, value.ActorType, value.ActorID, value.OccurredAt, digest[:])
+	if err != nil {
+		return false, fmt.Errorf("append Bell event outcome: %w", err)
+	}
+	rows, err := result.RowsAffected()
+	if err != nil {
+		return false, fmt.Errorf("read Bell outcome insert result: %w", err)
+	}
+	if rows == 1 {
+		return true, nil
+	}
+	var existing []byte
+	if err := p.db.QueryRowContext(ctx, `SELECT record_hash FROM bell.event_outcomes WHERE id=$1`, value.ID).Scan(&existing); err != nil {
+		return false, fmt.Errorf("read existing Bell outcome digest: %w", err)
+	}
+	if !bytes.Equal(existing, digest[:]) {
+		return false, ErrConflict
+	}
+	return false, nil
+}

Bell/internal/store/postgres_test.go

@@ -0,0 +1,120 @@
+package store
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	_ "github.com/jackc/pgx/v5/stdlib"
+
+	"yovision/bell/contracts"
+	"yovision/bell/internal/event"
+)
+
+type storeIDs struct{ id string }
+
+func (f storeIDs) NewEventID() (string, error) { return f.id, nil }
+
+type allowVideo struct{}
+
+func (allowVideo) VideoAllowed(context.Context, int64, int64, int64) (bool, error) {
+	return true, nil
+}
+
+func testCandidate(t *testing.T, configVersion string) []byte {
+	t.Helper()
+	path := filepath.Join("..", "..", "..", "docs", "raw", "contracts", "event-v0.1.example-current.json")
+	raw, err := os.ReadFile(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var object map[string]any
+	if err := json.Unmarshal(raw, &object); err != nil {
+		t.Fatal(err)
+	}
+	delete(object, "id")
+	object["config_version"] = configVersion
+	encoded, err := json.Marshal(object)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return encoded
+}
+
+func newEvent(t *testing.T, configVersion string) event.Event {
+	t.Helper()
+	guard, err := event.NewEvidenceGuard()
+	if err != nil {
+		t.Fatal(err)
+	}
+	factory, err := event.NewFactory(
+		contracts.EventV01Schema,
+		storeIDs{id: "evt_01J8XQ2K7M3P5R9T0V4W6Y8Z2B"},
+		allowVideo{}, guard,
+	)
+	if err != nil {
+		t.Fatal(err)
+	}
+	value, err := factory.Create(context.Background(), testCandidate(t, configVersion))
+	if err != nil {
+		t.Fatal(err)
+	}
+	return value
+}
+
+func TestPostgresImmutableEventAndOutcome(t *testing.T) {
+	dsn := os.Getenv("YOVISION_TEST_BELL_POSTGRES_DSN")
+	if dsn == "" {
+		t.Skip("YOVISION_TEST_BELL_POSTGRES_DSN is not set")
+	}
+	db, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+	ctx := context.Background()
+	repo, err := OpenPostgres(ctx, db)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	value := newEvent(t, "sp-v1-2026.07.20")
+	created, err := repo.InsertEvent(ctx, value)
+	if err != nil || !created {
+		t.Fatalf("first insert: created=%v err=%v", created, err)
+	}
+	created, err = repo.InsertEvent(ctx, value)
+	if err != nil || created {
+		t.Fatalf("idempotent replay: created=%v err=%v", created, err)
+	}
+	if _, err := repo.InsertEvent(ctx, newEvent(t, "sp-v1-conflict")); !errors.Is(err, ErrConflict) {
+		t.Fatalf("expected immutable conflict, got %v", err)
+	}
+
+	reason := "confirmed by operator"
+	outcome := Outcome{
+		ID: "out_01J8XQ2K7M3P5R9T0V4W6Y8Z2B", EventID: value.ID(),
+		Value: "true_positive", Source: "manual", Reason: &reason,
+		ActorType: "user", ActorID: "operator-1", OccurredAt: time.Now().UTC(),
+	}
+	created, err = repo.AppendOutcome(ctx, outcome)
+	if err != nil || !created {
+		t.Fatalf("append outcome: created=%v err=%v", created, err)
+	}
+	created, err = repo.AppendOutcome(ctx, outcome)
+	if err != nil || created {
+		t.Fatalf("idempotent outcome replay: created=%v err=%v", created, err)
+	}
+
+	if _, err := db.ExecContext(ctx, `UPDATE bell.events SET kind='changed' WHERE id=$1`, value.ID()); err == nil {
+		t.Fatal("runtime unexpectedly updated immutable event")
+	}
+	if _, err := db.ExecContext(ctx, `DELETE FROM bell.event_outcomes WHERE id=$1`, outcome.ID); err == nil {
+		t.Fatal("runtime unexpectedly deleted immutable outcome")
+	}
+}

Brain/.gitignore

@@ -0,0 +1,6 @@
+__pycache__/
+*.py[cod]
+.venv/
+artifacts/
+*.local.json
+*.url

Brain/.gitkeep

@@ -1 +0,0 @@
-

Brain/README.md

@@ -0,0 +1,86 @@
+# YoVision Brain 单路工程原型
+
+T-017 提供可见、可重复的单路工程链路；T-019 为 `zone_entry` 候选增加默认关闭的可靠 Brain→Bell transport。它仍不是生产模型或 NVR：推理演示保持单路，事件先进入仓库外 SQLite Outbox，再由内部 HMAC client 投递给 Bell。
+
+## 环境
+
+- Python `3.10.11`
+- NumPy `1.26.4`
+- OpenCV `4.9.0.80`
+
+本任务复用本机已验证版本；新环境显式安装：
+
+```powershell
+python -m pip install -r Brain/requirements-demo.txt
+```
+
+本机冻结的是 `opencv-python`；同一环境只能安装一种提供 `cv2` 命名空间的 OpenCV wheel。不要同时安装标准、headless 和 contrib 变体。后续生产容器若改用 headless，必须在独立任务核对 wheel、许可证与完整回归，不能在本版本号下静默替换包名。
+
+## 启动
+
+无需摄像头的确定性合成回放：
+
+```powershell
+python -m Brain.yovision_brain --source synthetic
+```
+
+打开 `http://127.0.0.1:8090/brain-demo`。合成人员框由 fixture 提供，页面和事件均显式标识，不得拿它证明模型效果。
+
+使用真实流时，把完整 RTSP URL 写入仓库外绝对路径文件。推荐指向 Sense 管理的 MediaMTX path，而不是绕过 Sense 固化摄像头地址：
+
+```powershell
+python -m Brain.yovision_brain --source stream --stream-url-file D:\private\brain-stream.url
+```
+
+URL 文件只允许一行、最多 4096 字节，服务不会在状态、页面和错误中返回其内容。演示服务只接受 `127.0.0.1`、`localhost` 或 `::1`；没有暴露到局域网的开关。
+
+真实流使用 OpenCV 内置 HOG/SVM 人员检测和轻量 centroid tracker，只验证可替换端口与区域链路。它不是 M3 生产模型，不能据此承诺召回率、误报率、GPU 容量或 16/128 路能力。
+
+## 可选 Brain → Bell 事件投递
+
+默认不传 `--event-ingress-config`，工程原型行为与 T-017 相同。启用时，配置、key 和 SQLite 文件都必须位于仓库外绝对路径；HTTP 只允许显式回环，非回环必须 HTTPS。key 文件也供 Bell event ingress 读取，但不得与 Sense 审计 key 混用：
+
+```json
+{"version":1,"keys":[{"key_id":"brain-a","producer_id":"brain-main","secret_base64url":"<至少32字节随机值的无填充base64url>"}]}
+```
+
+Brain 配置示例（占位 ID 必须与 Bell 管理员创建的 `bell.event_ingress_bindings` 一致）：
+
+```json
+{
+  "version": 1,
+  "producer_id": "brain-main",
+  "tenant_id": 1,
+  "site_id": 1,
+  "device_id": 1,
+  "modality": "video",
+  "severity": "medium",
+  "config_version": "brain-demo-v1",
+  "bell_url": "http://127.0.0.1:8081/internal/v1/event-candidates",
+  "key_id": "brain-a",
+  "key_file": "D:\\private\\brain-event-keys.json",
+  "outbox_path": "D:\\private\\brain-event-outbox.sqlite3"
+}
+```
+
+```powershell
+python -m Brain.yovision_brain --source synthetic --event-ingress-config D:\private\brain-event-ingress.json
+```
+
+Outbox 使用 WAL 和 `synchronous=FULL`，首次打开即绑定 producer/tenant/site/device；更换身份必须使用新的 Outbox 路径，不能让旧队列借新 producer 发送。最多保留 10,000 条待投递；只有 Bell `accepted/duplicate` 才确认 delivered。网络、401 与 5xx 按 1～300 秒退避、最多 100 次；稳定 4xx 进入 dead letter。终态行不会自动删除。状态页只显示计数和稳定错误码，不显示 URL、key、payload 或数据库路径；client 显式忽略环境 HTTP proxy。
+
+## 验证
+
+```powershell
+python -m unittest discover -s Brain/tests -p "test_*.py" -v
+python -m compileall -q Brain
+```
+
+单文件 UI 原型位于 `docs/design/brain/index.html`，可直接打开；此时使用明确标识的离线原型数据。由本地服务打开时，同一文件消费回环 API，并用临时页面 token 保护区域写入。
+
+## 边界
+
+- `source_event_id` 由 Brain 产生，平台 `evt_` ULID 由 Bell 产生。
+- 页面仍只保留最多 100 项的内存环；启用 T-019 后，可靠性由独立 SQLite Outbox 承担，不能从页面事件环推断投递状态。
+- Bell 平台 ID 只由 Bell 生成；相同 producer/source candidate 重投返回原 ID，Brain 不改写 source ID 规避冲突。
+- `D:\OPC\silver_pose` 保持独立，不是本模块的源码目录、运行依赖或模型来源路径。

Brain/__init__.py

@@ -0,0 +1 @@
+"""YoVision Brain package root."""

Brain/requirements-demo.txt

@@ -0,0 +1,3 @@
+# T-017 engineering prototype only. Do not infer the production Brain stack.
+numpy==1.26.4
+opencv-python==4.9.0.80

Brain/tests/test_domain.py

@@ -0,0 +1,96 @@
+from __future__ import annotations
+
+import unittest
+from datetime import datetime, timezone
+
+from Brain.yovision_brain.domain import (
+    Box,
+    Detection,
+    Point,
+    Zone,
+    ZoneEntryEvaluator,
+    point_in_polygon,
+    zone_from_payload,
+)
+
+
+class GeometryTests(unittest.TestCase):
+    def setUp(self) -> None:
+        self.zone = Zone(
+            "zone-1",
+            "危险区域",
+            1,
+            (Point(0.4, 0.2), Point(0.8, 0.2), Point(0.8, 0.8), Point(0.4, 0.8)),
+        )
+
+    def test_point_in_polygon_includes_boundary(self) -> None:
+        self.assertTrue(point_in_polygon(Point(0.6, 0.5), self.zone.points))
+        self.assertTrue(point_in_polygon(Point(0.4, 0.5), self.zone.points))
+        self.assertFalse(point_in_polygon(Point(0.2, 0.5), self.zone.points))
+
+    def test_zone_requires_normalized_three_to_thirty_two_points(self) -> None:
+        with self.assertRaisesRegex(ValueError, "3 to 32"):
+            Zone("zone-1", "bad", 1, (Point(0, 0), Point(1, 1)))
+        with self.assertRaisesRegex(ValueError, "within"):
+            Point(1.1, 0.5)
+        with self.assertRaisesRegex(ValueError, "within"):
+            Point(float("nan"), 0.5)
+        with self.assertRaisesRegex(ValueError, "within"):
+            Box(0.1, 0.1, float("inf"), 0.9)
+
+    def test_zone_payload_rejects_unknown_fields_and_increments_version(self) -> None:
+        updated = zone_from_payload(
+            {"name": "新区域", "points": [{"x": 0.1, "y": 0.1}, {"x": 0.9, "y": 0.1}, {"x": 0.5, "y": 0.9}]},
+            self.zone,
+        )
+        self.assertEqual(updated.version, 2)
+        self.assertEqual(updated.name, "新区域")
+        with self.assertRaisesRegex(ValueError, "unknown"):
+            zone_from_payload({"points": [], "tenant_id": "must-not-be-here"}, self.zone)
+
+
+class ZoneEntryTests(unittest.TestCase):
+    def setUp(self) -> None:
+        self.zone = Zone(
+            "zone-1",
+            "危险区域",
+            1,
+            (Point(0.5, 0.2), Point(0.9, 0.2), Point(0.9, 0.9), Point(0.5, 0.9)),
+        )
+        ids = iter(("BRN-0001", "BRN-0002", "BRN-0003"))
+        self.evaluator = ZoneEntryEvaluator("device-ref", True, track_ttl_frames=2, event_id_factory=lambda: next(ids))
+        self.now = datetime(2026, 8, 11, 1, 2, 3, tzinfo=timezone.utc)
+
+    @staticmethod
+    def detection(track: str, center_x: float) -> Detection:
+        return Detection(track, "person", Box(center_x - 0.05, 0.3, center_x + 0.05, 0.8))
+
+    def test_first_seen_inside_does_not_fake_an_entry(self) -> None:
+        events, states = self.evaluator.evaluate(1, self.now, self.zone, [self.detection("P-1", 0.7)])
+        self.assertEqual(events, [])
+        self.assertTrue(states["P-1"])
+
+    def test_entry_fires_once_until_track_exits_and_reenters(self) -> None:
+        self.evaluator.evaluate(1, self.now, self.zone, [self.detection("P-1", 0.3)])
+        events, _ = self.evaluator.evaluate(2, self.now, self.zone, [self.detection("P-1", 0.6)])
+        repeated, _ = self.evaluator.evaluate(3, self.now, self.zone, [self.detection("P-1", 0.7)])
+        self.evaluator.evaluate(4, self.now, self.zone, [self.detection("P-1", 0.3)])
+        reentered, _ = self.evaluator.evaluate(5, self.now, self.zone, [self.detection("P-1", 0.6)])
+
+        self.assertEqual([item.source_event_id for item in events], ["BRN-0001"])
+        self.assertEqual(repeated, [])
+        self.assertEqual([item.source_event_id for item in reentered], ["BRN-0002"])
+        payload = events[0].as_dict()
+        self.assertNotIn("id", payload)
+        self.assertEqual(payload["confidence"], None)
+        self.assertTrue(payload["fixture"])
+
+    def test_expired_track_reappearing_inside_is_not_an_entry(self) -> None:
+        self.evaluator.evaluate(1, self.now, self.zone, [self.detection("P-1", 0.3)])
+        self.evaluator.evaluate(4, self.now, self.zone, [])
+        events, _ = self.evaluator.evaluate(5, self.now, self.zone, [self.detection("P-1", 0.7)])
+        self.assertEqual(events, [])
+
+
+if __name__ == "__main__":
+    unittest.main()

Brain/tests/test_ingress.py

@@ -0,0 +1,291 @@
+from __future__ import annotations
+
+import base64
+import hashlib
+import hmac
+import json
+import tempfile
+import threading
+import unittest
+from datetime import datetime, timezone
+from http.server import BaseHTTPRequestHandler, HTTPServer
+from pathlib import Path
+
+from Brain.yovision_brain.domain import EventCandidate
+from Brain.yovision_brain.ingress import (
+    BrainEventIngress,
+    DeliveryResult,
+    EventIngressClient,
+    EventOutbox,
+    EventRelayWorker,
+    IngressConfig,
+    KeyMaterial,
+    PermanentDelivery,
+    RetryableDelivery,
+    load_config,
+    map_candidate,
+)
+
+
+EVENT_ID = "evt_01J8XQ2K7M3P5R9T0V4W6Y8Z2B"
+
+
+def candidate(source_event_id: str = "BRN-test-0001", fixture: bool = True) -> EventCandidate:
+    return EventCandidate(
+        source_event_id=source_event_id,
+        kind="zone_entry",
+        source_ref="must-not-leave-brain",
+        track_id="P-1",
+        zone_id="zone-1",
+        zone_version=3,
+        occurred_at=datetime(2026, 8, 11, tzinfo=timezone.utc).isoformat().replace("+00:00", "Z"),
+        confidence=None,
+        fixture=fixture,
+    )
+
+
+def config(root: Path, bell_url: str = "http://127.0.0.1:8081/internal/v1/event-candidates") -> IngressConfig:
+    return IngressConfig(
+        producer_id="brain-main",
+        tenant_id=1,
+        site_id=2,
+        device_id=3,
+        modality="video",
+        severity="medium",
+        config_version="brain-demo-v1",
+        bell_url=bell_url,
+        key_id="brain-a",
+        key_file=root / "keys.json",
+        outbox_path=root / "outbox.sqlite3",
+    )
+
+
+class ConfigAndMapperTests(unittest.TestCase):
+    def test_external_config_binds_key_and_rejects_remote_plaintext(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            root = Path(directory)
+            secret = bytes(range(32))
+            key_file = root / "keys.json"
+            key_file.write_text(
+                json.dumps(
+                    {
+                        "version": 1,
+                        "keys": [
+                            {
+                                "key_id": "brain-a",
+                                "producer_id": "brain-main",
+                                "secret_base64url": base64.urlsafe_b64encode(secret).rstrip(b"=").decode("ascii"),
+                            }
+                        ],
+                    }
+                ),
+                encoding="utf-8",
+            )
+            config_file = root / "config.json"
+            document = {
+                "version": 1,
+                "producer_id": "brain-main",
+                "tenant_id": 1,
+                "site_id": 2,
+                "device_id": 3,
+                "modality": "video",
+                "severity": "medium",
+                "config_version": "brain-demo-v1",
+                "bell_url": "http://127.0.0.1:8081/internal/v1/event-candidates",
+                "key_id": "brain-a",
+                "key_file": str(key_file.resolve()),
+                "outbox_path": str((root / "outbox.sqlite3").resolve()),
+            }
+            config_file.write_text(json.dumps(document), encoding="utf-8")
+            loaded, key = load_config(str(config_file.resolve()))
+            self.assertEqual(("brain-main", secret), (loaded.producer_id, key.secret))
+
+            document["bell_url"] = "http://camera.example/internal/v1/event-candidates"
+            config_file.write_text(json.dumps(document), encoding="utf-8")
+            with self.assertRaisesRegex(ValueError, "HTTPS"):
+                load_config(str(config_file.resolve()))
+
+    def test_mapper_produces_complete_candidate_without_sensitive_source(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            payload = json.loads(map_candidate(candidate(), config(Path(directory))))
+        self.assertNotIn("id", payload)
+        self.assertNotIn("source_ref", json.dumps(payload))
+        self.assertEqual("test", payload["outcome"])
+        self.assertEqual("auto", payload["outcome_source"])
+        self.assertIsNone(payload["confidence"])
+        self.assertEqual(payload["occurred_at"], payload["detected_at"])
+        self.assertEqual(0.0, payload["latency_seconds"])
+        self.assertEqual([{"device_id": 3, "modality": "video", "role": "primary"}], payload["sensors"])
+        expected = {
+            "schema_version", "source_event_id", "tenant_id", "site_id", "device_id", "sensors", "kind",
+            "severity", "confidence", "occurred_at", "detected_at", "latency_seconds", "config_version",
+            "rule", "subject", "observation", "evidence", "dedup_key", "aggregated_into", "outcome",
+            "outcome_source", "outcome_reason", "diagnostics", "ext",
+        }
+        self.assertEqual(expected, set(payload))
+
+
+class OutboxTests(unittest.TestCase):
+    def test_crash_recovery_retry_and_terminal_records_are_durable(self) -> None:
+        clock = [1_000.0]
+        now = lambda: clock[0]
+        with tempfile.TemporaryDirectory() as directory:
+            path = Path(directory) / "outbox.sqlite3"
+            payload = map_candidate(candidate(), config(Path(directory)))
+            outbox = EventOutbox(path, now=now)
+            self.assertTrue(outbox.enqueue(payload))
+            self.assertFalse(outbox.enqueue(payload))
+            leased = outbox.lease_one()
+            self.assertIsNotNone(leased)
+            outbox.close()  # Simulate a process crash while the lease is held.
+
+            clock[0] += 31.0
+            outbox = EventOutbox(path, now=now)
+            recovered = outbox.lease_one()
+            self.assertIsNotNone(recovered)
+            self.assertEqual(2, recovered.attempt_count)
+            outbox.mark_delivered(recovered, DeliveryResult("duplicate", EVENT_ID))
+            self.assertEqual(1, outbox.status()["delivered"])
+            outbox.close()
+
+            outbox = EventOutbox(path, now=now)
+            status = outbox.status()
+            self.assertEqual((1, 0), (status["delivered"], status["queued"]))
+            outbox.close()
+
+    def test_source_id_conflict_is_not_silently_overwritten(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            root = Path(directory)
+            outbox = EventOutbox(root / "outbox.sqlite3")
+            outbox.enqueue(map_candidate(candidate(), config(root)))
+            changed = json.loads(map_candidate(candidate(), config(root)))
+            changed["config_version"] = "different"
+            with self.assertRaisesRegex(ValueError, "different candidate"):
+                outbox.enqueue(json.dumps(changed, sort_keys=True, separators=(",", ":")).encode())
+            outbox.close()
+
+    def test_crash_on_final_attempt_becomes_dead_letter(self) -> None:
+        clock = [1_000.0]
+        with tempfile.TemporaryDirectory() as directory:
+            root = Path(directory)
+            path = root / "outbox.sqlite3"
+            outbox = EventOutbox(path, now=lambda: clock[0])
+            outbox.enqueue(map_candidate(candidate(), config(root)))
+            for _ in range(99):
+                item = outbox.lease_one()
+                self.assertIsNotNone(item)
+                outbox.mark_retry(item, "network_error")
+                clock[0] += 301.0
+            final = outbox.lease_one()
+            self.assertEqual(100, final.attempt_count)
+            outbox.close()
+            clock[0] += 31.0
+            outbox = EventOutbox(path, now=lambda: clock[0])
+            self.assertIsNone(outbox.lease_one())
+            self.assertEqual(1, outbox.status()["dead_letter"])
+            outbox.close()
+
+    def test_outbox_cannot_be_reused_for_another_producer_identity(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            root = Path(directory)
+            path = root / "outbox.sqlite3"
+            outbox = EventOutbox(path)
+            original = config(root)
+            outbox.bind_identity(original)
+            outbox.close()
+            outbox = EventOutbox(path)
+            changed = IngressConfig(**{**original.__dict__, "producer_id": "brain-other"})
+            with self.assertRaisesRegex(ValueError, "different producer"):
+                outbox.bind_identity(changed)
+            outbox.close()
+
+
+class _BellHandler(BaseHTTPRequestHandler):
+    secret = bytes(range(32))
+    verified = False
+    failure: str | None = None
+
+    def log_message(self, _format: str, *_args: object) -> None:
+        return
+
+    def do_POST(self) -> None:  # noqa: N802
+        try:
+            length = int(self.headers["Content-Length"])
+            body = self.rfile.read(length)
+            timestamp = self.headers["X-YoVision-Timestamp"]
+            nonce = self.headers["X-YoVision-Nonce"]
+            canonical = "\n".join(("POST", self.path, timestamp, nonce, hashlib.sha256(body).hexdigest())).encode()
+            encoded_signature = self.headers["X-YoVision-Signature"]
+            supplied = base64.urlsafe_b64decode(encoded_signature + "=" * (-len(encoded_signature) % 4))
+            type(self).verified = hmac.compare_digest(supplied, hmac.new(self.secret, canonical, hashlib.sha256).digest())
+            envelope = json.loads(body)
+            response = json.dumps(
+                {
+                    "schema_version": 1,
+                    "producer_id": envelope["producer_id"],
+                    "source_event_id": envelope["candidate"]["source_event_id"],
+                    "event_id": EVENT_ID,
+                    "status": "accepted",
+                }
+            ).encode()
+            self.send_response(201)
+            self.send_header("Content-Type", "application/json")
+            self.send_header("Content-Length", str(len(response)))
+            self.end_headers()
+            self.wfile.write(response)
+        except Exception as exc:  # pragma: no cover - only improves test diagnostics
+            type(self).failure = repr(exc)
+            self.send_response(500)
+            self.end_headers()
+
+
+class ClientAndWorkerTests(unittest.TestCase):
+    def test_client_signs_and_accepts_bell_response(self) -> None:
+        server = HTTPServer(("127.0.0.1", 0), _BellHandler)
+        thread = threading.Thread(target=server.serve_forever, daemon=True)
+        thread.start()
+        try:
+            with tempfile.TemporaryDirectory() as directory:
+                root = Path(directory)
+                client = EventIngressClient(
+                    config(root, f"http://127.0.0.1:{server.server_port}/internal/v1/event-candidates"),
+                    KeyMaterial("brain-a", "brain-main", _BellHandler.secret),
+                    now=lambda: 1_800_000_000.0,
+                )
+                try:
+                    result = client.deliver(map_candidate(candidate(), config(root)))
+                except RetryableDelivery as exc:
+                    self.fail(f"test Bell handler failed: {_BellHandler.failure}; client={exc.code}")
+            self.assertEqual(("accepted", EVENT_ID), (result.status, result.event_id))
+            self.assertTrue(_BellHandler.verified)
+        finally:
+            server.shutdown()
+            server.server_close()
+            thread.join(timeout=2.0)
+
+    def test_worker_distinguishes_retryable_and_permanent_failures(self) -> None:
+        class FailingClient:
+            def __init__(self, failure: Exception) -> None:
+                self.failure = failure
+
+            def deliver(self, _payload: bytes) -> DeliveryResult:
+                raise self.failure
+
+        with tempfile.TemporaryDirectory() as directory:
+            root = Path(directory)
+            payload = map_candidate(candidate(), config(root))
+            outbox = EventOutbox(root / "retry.sqlite3", now=lambda: 100.0)
+            outbox.enqueue(payload)
+            EventRelayWorker(outbox, FailingClient(RetryableDelivery("unauthorized"))).run_once()
+            self.assertEqual((1, 0), (outbox.status()["queued"], outbox.status()["dead_letter"]))
+            outbox.close()
+
+            outbox = EventOutbox(root / "dead.sqlite3", now=lambda: 100.0)
+            outbox.enqueue(payload)
+            EventRelayWorker(outbox, FailingClient(PermanentDelivery("source_event_conflict"))).run_once()
+            self.assertEqual(1, outbox.status()["dead_letter"])
+            outbox.close()
+
+
+if __name__ == "__main__":
+    unittest.main()

Brain/tests/test_runtime.py

@@ -0,0 +1,92 @@
+from __future__ import annotations
+
+import unittest
+
+from datetime import datetime, timezone
+
+from Brain.yovision_brain.domain import Box, Detection
+from Brain.yovision_brain.runtime import DemoEngine, EventIngressUnavailable
+from Brain.yovision_brain.source import FramePacket, SyntheticSource, cv2, np
+
+
+class _TwoFrameSource:
+    fixture = True
+    mode = "test"
+    label = "test"
+    source_ref = "safe-source"
+
+    def __init__(self) -> None:
+        self.index = 0
+
+    def read(self) -> FramePacket:
+        boxes = (Box(0.10, 0.4, 0.20, 0.8), Box(0.60, 0.4, 0.70, 0.8))
+        detection = Detection("P-1", "person", boxes[min(self.index, 1)])
+        self.index += 1
+        return FramePacket(np.zeros((180, 320, 3), dtype=np.uint8), datetime.now(timezone.utc), (detection,))
+
+    def close(self) -> None:
+        return
+
+
+class _Ingress:
+    def __init__(self, fail: bool = False) -> None:
+        self.items = []
+        self.fail = fail
+
+    def submit(self, value: object) -> None:
+        if self.fail:
+            raise RuntimeError("disk unavailable")
+        self.items.append(value)
+
+    def start(self) -> None:
+        return
+
+    def stop(self) -> None:
+        return
+
+    def status(self) -> dict[str, object]:
+        return {"enabled": True, "queued": len(self.items)}
+
+
+@unittest.skipIf(cv2 is None, "pinned OpenCV package is not installed")
+class RuntimeTests(unittest.TestCase):
+    def test_rejects_non_finite_fps(self) -> None:
+        with self.assertRaisesRegex(ValueError, "fps"):
+            DemoEngine(SyntheticSource(width=320, height=180), fps=float("nan"))
+
+    def test_synthetic_step_produces_safe_state_and_jpeg(self) -> None:
+        engine = DemoEngine(SyntheticSource(width=320, height=180), fps=2.0)
+        engine.step()
+        state = engine.state()
+        self.assertTrue(state["source"]["fixture"])
+        self.assertEqual(state["detector"]["name"], "scripted_fixture")
+        self.assertEqual(state["frame"]["width"], 320)
+        self.assertGreater(len(engine.frame_jpeg() or b""), 100)
+        self.assertNotIn("url", state["source"])
+
+    def test_zone_update_increments_version(self) -> None:
+        engine = DemoEngine(SyntheticSource(width=320, height=180))
+        updated = engine.update_zone({"name": "新区域", "points": [{"x": 0.1, "y": 0.1}, {"x": 0.9, "y": 0.1}, {"x": 0.5, "y": 0.9}]})
+        self.assertEqual(updated.version, 2)
+        self.assertEqual(engine.state()["zone"]["name"], "新区域")
+
+    def test_event_is_persisted_before_it_is_exposed(self) -> None:
+        ingress = _Ingress()
+        engine = DemoEngine(_TwoFrameSource(), event_ingress=ingress)
+        engine.step()
+        engine.step()
+        state = engine.state()
+        self.assertEqual(1, len(ingress.items))
+        self.assertEqual("outbox_persisted", state["events"][0]["delivery_status"])
+        self.assertEqual(1, state["event_ingress"]["queued"])
+
+    def test_outbox_failure_does_not_claim_delivery(self) -> None:
+        engine = DemoEngine(_TwoFrameSource(), event_ingress=_Ingress(fail=True))
+        engine.step()
+        with self.assertRaises(EventIngressUnavailable):
+            engine.step()
+        self.assertEqual([], engine.state()["events"])
+
+
+if __name__ == "__main__":
+    unittest.main()

Brain/tests/test_server.py

@@ -0,0 +1,82 @@
+from __future__ import annotations
+
+import http.client
+import json
+import threading
+import unittest
+
+from Brain.yovision_brain.domain import Point, Zone, zone_from_payload
+from Brain.yovision_brain.server import DemoHTTPServer, DemoHandler, index_path, parse_bind
+
+
+class FakeEngine:
+    def __init__(self) -> None:
+        self.zone = Zone("zone-demo-01", "测试区域", 1, (Point(0.1, 0.1), Point(0.9, 0.1), Point(0.5, 0.9)))
+
+    def state(self) -> dict[str, object]:
+        return {"source": {"label": "safe", "connected": True}, "events": [], "zone": {"version": self.zone.version}}
+
+    def frame_jpeg(self) -> bytes:
+        return b"\xff\xd8safe-jpeg\xff\xd9"
+
+    def update_zone(self, payload: object) -> Zone:
+        self.zone = zone_from_payload(payload, self.zone)
+        return self.zone
+
+
+class BindTests(unittest.TestCase):
+    def test_only_explicit_loopback_is_allowed(self) -> None:
+        self.assertEqual(parse_bind("127.0.0.1:8090"), ("127.0.0.1", 8090))
+        self.assertEqual(parse_bind("localhost:8090"), ("localhost", 8090))
+        with self.assertRaisesRegex(ValueError, "loopback"):
+            parse_bind("0.0.0.0:8090")
+        with self.assertRaisesRegex(ValueError, "loopback"):
+            parse_bind("192.168.1.10:8090")
+
+
+class HTTPTests(unittest.TestCase):
+    def setUp(self) -> None:
+        html = index_path().read_text(encoding="utf-8")
+        self.server = DemoHTTPServer(("127.0.0.1", 0), FakeEngine(), "test-token", html)
+        self.thread = threading.Thread(target=self.server.serve_forever, daemon=True)
+        self.thread.start()
+        self.connection = http.client.HTTPConnection("127.0.0.1", self.server.server_port, timeout=2)
+
+    def tearDown(self) -> None:
+        self.connection.close()
+        self.server.shutdown()
+        self.server.server_close()
+        self.thread.join(timeout=2)
+
+    def test_index_substitutes_token_and_sets_security_headers(self) -> None:
+        self.connection.request("GET", "/brain-demo")
+        response = self.connection.getresponse()
+        body = response.read().decode("utf-8")
+        self.assertEqual(response.status, 200)
+        self.assertIn('content="test-token"', body)
+        self.assertNotIn("__BRAIN_DEMO_TOKEN__", body)
+        self.assertEqual(response.getheader("X-Frame-Options"), "DENY")
+        self.assertIn("default-src 'self'", response.getheader("Content-Security-Policy"))
+
+    def test_zone_write_requires_token_and_rejects_unknown_fields(self) -> None:
+        body = json.dumps({"name": "新区域", "points": [{"x": 0.1, "y": 0.1}, {"x": 0.9, "y": 0.1}, {"x": 0.5, "y": 0.9}]})
+        self.connection.request("PUT", "/api/v1/zones/active", body=body, headers={"Content-Type": "application/json"})
+        forbidden = self.connection.getresponse()
+        forbidden.read()
+        self.assertEqual(forbidden.status, 403)
+
+        self.connection.request("PUT", "/api/v1/zones/active", body=body, headers={"Content-Type": "application/json", "X-Brain-Demo-Token": "test-token"})
+        accepted = self.connection.getresponse()
+        payload = json.loads(accepted.read())
+        self.assertEqual(accepted.status, 200)
+        self.assertEqual(payload["version"], 2)
+
+        invalid = json.dumps({"name": "bad", "points": [], "tenant_id": "leak"})
+        self.connection.request("PUT", "/api/v1/zones/active", body=invalid, headers={"Content-Type": "application/json", "X-Brain-Demo-Token": "test-token"})
+        rejected = self.connection.getresponse()
+        self.assertEqual(rejected.status, 400)
+        self.assertEqual(json.loads(rejected.read())["code"], "invalid_zone")
+
+
+if __name__ == "__main__":
+    unittest.main()

Brain/tests/test_source.py

@@ -0,0 +1,43 @@
+from __future__ import annotations
+
+import tempfile
+import unittest
+from pathlib import Path
+
+from Brain.yovision_brain.domain import Box
+from Brain.yovision_brain.source import CentroidTracker, read_stream_url
+
+
+class StreamURLTests(unittest.TestCase):
+    def test_requires_absolute_single_rtsp_url_file(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            path = Path(directory) / "stream.url"
+            path.write_text("rtsp://user:secret@127.0.0.1:8554/camera\n", encoding="utf-8")
+            self.assertEqual(read_stream_url(str(path)), "rtsp://user:secret@127.0.0.1:8554/camera")
+            path.write_text("rtsp://127.0.0.1/a\nrtsp://127.0.0.1/b\n", encoding="utf-8")
+            with self.assertRaisesRegex(ValueError, "exactly one") as caught:
+                read_stream_url(str(path))
+            self.assertNotIn("127.0.0.1", str(caught.exception))
+
+    def test_rejects_relative_path_without_echoing_input(self) -> None:
+        with self.assertRaisesRegex(ValueError, "absolute"):
+            read_stream_url("camera-secret.url")
+
+    def test_rejects_url_files_inside_repository(self) -> None:
+        repository_file = Path(__file__).resolve()
+        with self.assertRaisesRegex(ValueError, "outside the repository"):
+            read_stream_url(str(repository_file))
+
+
+class TrackerTests(unittest.TestCase):
+    def test_nearby_boxes_retain_track_and_distant_box_gets_new_track(self) -> None:
+        tracker = CentroidTracker(max_distance=0.2)
+        first = tracker.update([(Box(0.1, 0.1, 0.2, 0.4), 0.8)], 1)
+        nearby = tracker.update([(Box(0.12, 0.1, 0.22, 0.4), 0.7)], 2)
+        distant = tracker.update([(Box(0.7, 0.1, 0.8, 0.4), 0.9)], 3)
+        self.assertEqual(first[0].track_id, nearby[0].track_id)
+        self.assertNotEqual(nearby[0].track_id, distant[0].track_id)
+
+
+if __name__ == "__main__":
+    unittest.main()

Brain/tests/test_ui_contract.py

@@ -0,0 +1,61 @@
+from __future__ import annotations
+
+import re
+import unittest
+from pathlib import Path
+
+
+HTML_PATH = Path(__file__).resolve().parents[2] / "docs" / "design" / "brain" / "index.html"
+
+
+class UIContractTests(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls) -> None:
+        cls.html = HTML_PATH.read_text(encoding="utf-8")
+
+    def test_prototype_is_self_contained_and_labels_fixture_truthfully(self) -> None:
+        self.assertIn("合成回放不等于模型效果", self.html)
+        self.assertIn("离线 HTML 原型数据", self.html)
+        self.assertNotRegex(self.html, r'(?:src|href)=["\']https?://')
+        self.assertNotIn("@import url", self.html)
+
+    def test_accessibility_and_responsive_guards_are_present(self) -> None:
+        required = (
+            'name="viewport"',
+            'class="skip-link"',
+            'aria-live="polite"',
+            ':focus-visible',
+            'prefers-reduced-motion',
+            'min-height: 44px',
+            '@media (max-width: 420px)',
+            '.toolbar { display: grid; grid-template-columns: 1fr; }',
+            '键盘用户可使用右侧坐标表单',
+        )
+        for marker in required:
+            with self.subTest(marker=marker):
+                self.assertIn(marker, self.html)
+
+    def test_no_structural_emoji_or_unescaped_secret_placeholder_in_text(self) -> None:
+        visible_without_script = re.sub(r"<script[\s\S]*?</script>", "", self.html)
+        self.assertNotRegex(visible_without_script, r"[\U0001F300-\U0001FAFF]")
+        self.assertEqual(self.html.count("__BRAIN_DEMO_TOKEN__"), 1)
+
+    def test_reliable_delivery_status_is_visible_without_configuration_details(self) -> None:
+        required = (
+            'id="event-ingress"',
+            'id="ingress-queued"',
+            'id="ingress-dead-letter"',
+            "Outbox 已持久化",
+            "Bell 返回 accepted 或 duplicate 后才计为已送达",
+            "event_ingress: {enabled: false}",
+        )
+        for marker in required:
+            with self.subTest(marker=marker):
+                self.assertIn(marker, self.html)
+        for forbidden in ("bell_url", "key_file", "outbox_path"):
+            with self.subTest(forbidden=forbidden):
+                self.assertNotIn(forbidden, self.html)
+
+
+if __name__ == "__main__":
+    unittest.main()

Brain/yovision_brain/__init__.py

@@ -0,0 +1,7 @@
+"""Single-stream Brain engineering prototype.
+
+This package intentionally exposes no Brain-to-Bell transport. T-018 owns
+that contract and its delivery semantics.
+"""
+
+__version__ = "0.1.0"

Brain/yovision_brain/__main__.py

@@ -0,0 +1,50 @@
+from __future__ import annotations
+
+import argparse
+import sys
+
+from .ingress import BrainEventIngress
+from .runtime import DemoEngine
+from .server import parse_bind, serve
+from .source import StreamSource, SyntheticSource, read_stream_url, require_opencv
+
+
+def build_parser() -> argparse.ArgumentParser:
+    parser = argparse.ArgumentParser(description="YoVision Brain single-stream engineering prototype")
+    parser.add_argument("--source", choices=("synthetic", "stream"), default="synthetic")
+    parser.add_argument("--stream-url-file", help="absolute external file containing one RTSP URL")
+    parser.add_argument("--bind", default="127.0.0.1:8090", help="loopback bind address")
+    parser.add_argument("--fps", type=float, default=2.0, help="prototype processing FPS (0, 30]")
+    parser.add_argument("--event-ingress-config", help="absolute external Brain-to-Bell ingress configuration")
+    return parser
+
+
+def main(argv: list[str] | None = None) -> int:
+    args = build_parser().parse_args(argv)
+    try:
+        require_opencv()
+        parse_bind(args.bind)
+        if args.source == "stream":
+            if not args.stream_url_file:
+                raise ValueError("--stream-url-file is required for stream mode")
+            source = StreamSource(read_stream_url(args.stream_url_file))
+        else:
+            if args.stream_url_file:
+                raise ValueError("--stream-url-file is only valid for stream mode")
+            source = SyntheticSource()
+        event_ingress = BrainEventIngress.from_file(args.event_ingress_config) if args.event_ingress_config else None
+        engine = DemoEngine(source, fps=args.fps, event_ingress=event_ingress)
+    except (RuntimeError, ValueError) as exc:
+        print(f"Brain demo configuration error: {exc}", file=sys.stderr)
+        return 2
+    print(f"Brain demo listening on http://{args.bind}/brain-demo")
+    print("Engineering prototype only; synthetic replay and HOG output are not production model evidence.")
+    try:
+        serve(engine, args.bind)
+    except KeyboardInterrupt:
+        return 0
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

Brain/yovision_brain/domain.py

@@ -0,0 +1,217 @@
+from __future__ import annotations
+
+import math
+from dataclasses import dataclass
+from datetime import datetime, timezone
+from typing import Callable, Iterable, Sequence
+from uuid import uuid4
+
+
+@dataclass(frozen=True)
+class Point:
+    x: float
+    y: float
+
+    def __post_init__(self) -> None:
+        if not all(math.isfinite(value) for value in (self.x, self.y)) or not (
+            0.0 <= self.x <= 1.0 and 0.0 <= self.y <= 1.0
+        ):
+            raise ValueError("point coordinates must be within [0, 1]")
+
+
+@dataclass(frozen=True)
+class Box:
+    x1: float
+    y1: float
+    x2: float
+    y2: float
+
+    def __post_init__(self) -> None:
+        values = (self.x1, self.y1, self.x2, self.y2)
+        if not all(math.isfinite(value) for value in values) or any(value < 0.0 or value > 1.0 for value in values):
+            raise ValueError("box coordinates must be within [0, 1]")
+        if self.x1 >= self.x2 or self.y1 >= self.y2:
+            raise ValueError("box must have positive area")
+
+    @property
+    def center(self) -> Point:
+        return Point((self.x1 + self.x2) / 2.0, (self.y1 + self.y2) / 2.0)
+
+
+@dataclass(frozen=True)
+class Detection:
+    track_id: str
+    class_name: str
+    box: Box
+    detector_score: float | None = None
+
+    def __post_init__(self) -> None:
+        if not self.track_id or len(self.track_id) > 128:
+            raise ValueError("track_id must contain 1 to 128 characters")
+        if self.class_name != "person":
+            raise ValueError("T-017 only supports anonymous person detections")
+        if self.detector_score is not None and not math.isfinite(self.detector_score):
+            raise ValueError("detector_score must be finite")
+
+
+@dataclass(frozen=True)
+class Zone:
+    zone_id: str
+    name: str
+    version: int
+    points: tuple[Point, ...]
+
+    def __post_init__(self) -> None:
+        if not self.zone_id or len(self.zone_id) > 128:
+            raise ValueError("zone_id must contain 1 to 128 characters")
+        if not self.name.strip() or len(self.name) > 80:
+            raise ValueError("zone name must contain 1 to 80 characters")
+        if self.version < 1:
+            raise ValueError("zone version must be positive")
+        if not 3 <= len(self.points) <= 32:
+            raise ValueError("zone must contain 3 to 32 points")
+
+
+@dataclass(frozen=True)
+class EventCandidate:
+    source_event_id: str
+    kind: str
+    source_ref: str
+    track_id: str
+    zone_id: str
+    zone_version: int
+    occurred_at: str
+    confidence: None
+    fixture: bool
+
+    def as_dict(self) -> dict[str, object]:
+        # Bell owns the platform `id`; it is deliberately absent here.
+        return {
+            "candidate_version": "brain-demo-v1",
+            "source_event_id": self.source_event_id,
+            "kind": self.kind,
+            "source_ref": self.source_ref,
+            "track_id": self.track_id,
+            "zone_id": self.zone_id,
+            "zone_version": self.zone_version,
+            "occurred_at": self.occurred_at,
+            "confidence": self.confidence,
+            "fixture": self.fixture,
+        }
+
+
+def _on_segment(point: Point, start: Point, end: Point, epsilon: float = 1e-9) -> bool:
+    cross = (point.y - start.y) * (end.x - start.x) - (point.x - start.x) * (end.y - start.y)
+    if abs(cross) > epsilon:
+        return False
+    return (
+        min(start.x, end.x) - epsilon <= point.x <= max(start.x, end.x) + epsilon
+        and min(start.y, end.y) - epsilon <= point.y <= max(start.y, end.y) + epsilon
+    )
+
+
+def point_in_polygon(point: Point, polygon: Sequence[Point]) -> bool:
+    if len(polygon) < 3:
+        return False
+    inside = False
+    previous = polygon[-1]
+    for current in polygon:
+        if _on_segment(point, previous, current):
+            return True
+        crosses = (current.y > point.y) != (previous.y > point.y)
+        if crosses:
+            boundary_x = (previous.x - current.x) * (point.y - current.y) / (previous.y - current.y) + current.x
+            if point.x < boundary_x:
+                inside = not inside
+        previous = current
+    return inside
+
+
+class ZoneEntryEvaluator:
+    def __init__(
+        self,
+        source_ref: str,
+        fixture: bool,
+        track_ttl_frames: int = 8,
+        event_id_factory: Callable[[], str] | None = None,
+    ) -> None:
+        if track_ttl_frames < 1:
+            raise ValueError("track_ttl_frames must be positive")
+        self._source_ref = source_ref
+        self._fixture = fixture
+        self._track_ttl_frames = track_ttl_frames
+        self._event_id_factory = event_id_factory or (lambda: f"BRN-{uuid4().hex}")
+        self._inside: dict[str, bool] = {}
+        self._last_seen: dict[str, int] = {}
+
+    def reset(self) -> None:
+        self._inside.clear()
+        self._last_seen.clear()
+
+    def evaluate(
+        self,
+        sequence: int,
+        occurred_at: datetime,
+        zone: Zone,
+        detections: Iterable[Detection],
+    ) -> tuple[list[EventCandidate], dict[str, bool]]:
+        if sequence < 0:
+            raise ValueError("sequence cannot be negative")
+        if occurred_at.tzinfo is None:
+            raise ValueError("occurred_at must be timezone-aware")
+
+        expired = [
+            track_id
+            for track_id, last_seen in self._last_seen.items()
+            if sequence - last_seen > self._track_ttl_frames
+        ]
+        for track_id in expired:
+            self._inside.pop(track_id, None)
+            self._last_seen.pop(track_id, None)
+
+        events: list[EventCandidate] = []
+        states: dict[str, bool] = {}
+        for detection in detections:
+            inside = point_in_polygon(detection.box.center, zone.points)
+            previous = self._inside.get(detection.track_id)
+            if previous is False and inside:
+                events.append(
+                    EventCandidate(
+                        source_event_id=self._event_id_factory(),
+                        kind="zone_entry",
+                        source_ref=self._source_ref,
+                        track_id=detection.track_id,
+                        zone_id=zone.zone_id,
+                        zone_version=zone.version,
+                        occurred_at=occurred_at.astimezone(timezone.utc).isoformat().replace("+00:00", "Z"),
+                        confidence=None,
+                        fixture=self._fixture,
+                    )
+                )
+            self._inside[detection.track_id] = inside
+            self._last_seen[detection.track_id] = sequence
+            states[detection.track_id] = inside
+        return events, states
+
+
+def zone_from_payload(payload: object, current: Zone) -> Zone:
+    if not isinstance(payload, dict):
+        raise ValueError("request body must be an object")
+    if set(payload) - {"name", "points"}:
+        raise ValueError("unknown zone fields are not allowed")
+    name = payload.get("name", current.name)
+    raw_points = payload.get("points")
+    if not isinstance(name, str):
+        raise ValueError("zone name must be a string")
+    if not isinstance(raw_points, list):
+        raise ValueError("zone points must be an array")
+    points: list[Point] = []
+    for raw_point in raw_points:
+        if not isinstance(raw_point, dict) or set(raw_point) != {"x", "y"}:
+            raise ValueError("each point must contain only x and y")
+        x = raw_point["x"]
+        y = raw_point["y"]
+        if isinstance(x, bool) or isinstance(y, bool) or not isinstance(x, (int, float)) or not isinstance(y, (int, float)):
+            raise ValueError("point coordinates must be numbers")
+        points.append(Point(float(x), float(y)))
+    return Zone(current.zone_id, name.strip(), current.version + 1, tuple(points))

Brain/yovision_brain/ingress.py

@@ -0,0 +1,645 @@
+from __future__ import annotations
+
+import base64
+import binascii
+import hashlib
+import hmac
+import ipaddress
+import json
+import re
+import secrets
+import sqlite3
+import threading
+import time
+from dataclasses import dataclass
+from pathlib import Path
+from typing import Callable
+from urllib.error import HTTPError, URLError
+from urllib.parse import urlsplit
+from urllib.request import HTTPRedirectHandler, ProxyHandler, Request, build_opener
+
+from .domain import EventCandidate
+
+
+INGRESS_PATH = "/internal/v1/event-candidates"
+MAX_PAYLOAD_BYTES = 1 << 20
+MAX_QUEUED = 10_000
+MAX_ATTEMPTS = 100
+HTTP_TIMEOUT_SECONDS = 10.0
+_ID = re.compile(r"^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$")
+_SOURCE_ID = re.compile(r"^[A-Za-z0-9_-]{1,128}$")
+_EVENT_ID = re.compile(r"^evt_[0-9A-HJKMNP-TV-Z]{26}$")
+_ERROR_CODE = re.compile(r"^[a-z][a-z0-9_]{0,63}$")
+_REPO_ROOT = Path(__file__).resolve().parents[2]
+
+
+@dataclass(frozen=True)
+class IngressConfig:
+    producer_id: str
+    tenant_id: int
+    site_id: int
+    device_id: int
+    modality: str
+    severity: str
+    config_version: str
+    bell_url: str
+    key_id: str
+    key_file: Path
+    outbox_path: Path
+
+
+@dataclass(frozen=True)
+class KeyMaterial:
+    key_id: str
+    producer_id: str
+    secret: bytes
+
+
+@dataclass(frozen=True)
+class LeasedEvent:
+    source_event_id: str
+    payload: bytes
+    attempt_count: int
+
+
+@dataclass(frozen=True)
+class DeliveryResult:
+    status: str
+    event_id: str
+
+
+class RetryableDelivery(RuntimeError):
+    def __init__(self, code: str) -> None:
+        super().__init__(code)
+        self.code = _safe_error(code)
+
+
+class PermanentDelivery(RuntimeError):
+    def __init__(self, code: str) -> None:
+        super().__init__(code)
+        self.code = _safe_error(code)
+
+
+class _NoRedirect(HTTPRedirectHandler):
+    def redirect_request(self, _request: Request, _file_pointer: object, _code: int, _message: str, _headers: object, _new_url: str) -> None:
+        return None
+
+
+def _is_within(path: Path, parent: Path) -> bool:
+    try:
+        path.relative_to(parent)
+        return True
+    except ValueError:
+        return False
+
+
+def _external_absolute_path(raw: object, field: str, *, must_exist: bool) -> Path:
+    if not isinstance(raw, str) or not raw:
+        raise ValueError(f"{field} must be an absolute external path")
+    path = Path(raw)
+    if not path.is_absolute():
+        raise ValueError(f"{field} must be an absolute external path")
+    resolved = path.resolve(strict=must_exist)
+    if _is_within(resolved, _REPO_ROOT):
+        raise ValueError(f"{field} must stay outside the repository")
+    return resolved
+
+
+def _load_json_file(path: Path, maximum: int = 64 << 10) -> object:
+    raw = path.read_bytes()
+    if len(raw) > maximum:
+        raise ValueError("external configuration file is too large")
+    try:
+        return json.loads(raw.decode("utf-8"))
+    except (UnicodeError, json.JSONDecodeError) as exc:
+        raise ValueError("external configuration is not valid JSON") from exc
+
+
+def _positive_int(value: object, field: str) -> int:
+    if isinstance(value, bool) or not isinstance(value, int) or value < 1:
+        raise ValueError(f"{field} must be a positive integer")
+    return value
+
+
+def _validate_bell_url(raw: object) -> str:
+    if not isinstance(raw, str):
+        raise ValueError("bell_url must be a URL")
+    parsed = urlsplit(raw)
+    if parsed.scheme not in {"http", "https"} or parsed.hostname is None or parsed.path != INGRESS_PATH:
+        raise ValueError("bell_url must target the versioned event ingress path")
+    if parsed.username is not None or parsed.password is not None or parsed.query or parsed.fragment:
+        raise ValueError("bell_url cannot contain credentials, query or fragment")
+    try:
+        port = parsed.port
+    except ValueError as exc:
+        raise ValueError("bell_url has an invalid port") from exc
+    if port is not None and not 1 <= port <= 65535:
+        raise ValueError("bell_url has an invalid port")
+    if parsed.scheme == "http":
+        host = parsed.hostname
+        loopback = host == "localhost"
+        if not loopback:
+            try:
+                loopback = ipaddress.ip_address(host).is_loopback
+            except ValueError:
+                loopback = False
+        if not loopback:
+            raise ValueError("non-loopback event ingress requires HTTPS")
+    return raw
+
+
+def load_config(path_value: str) -> tuple[IngressConfig, KeyMaterial]:
+    config_path = _external_absolute_path(path_value, "event ingress config", must_exist=True)
+    value = _load_json_file(config_path)
+    expected = {
+        "version",
+        "producer_id",
+        "tenant_id",
+        "site_id",
+        "device_id",
+        "modality",
+        "severity",
+        "config_version",
+        "bell_url",
+        "key_id",
+        "key_file",
+        "outbox_path",
+    }
+    if not isinstance(value, dict) or set(value) != expected or value.get("version") != 1:
+        raise ValueError("invalid event ingress configuration shape")
+    producer_id = value["producer_id"]
+    key_id = value["key_id"]
+    config_version = value["config_version"]
+    if not isinstance(producer_id, str) or not _ID.fullmatch(producer_id):
+        raise ValueError("invalid producer_id")
+    if not isinstance(key_id, str) or not _ID.fullmatch(key_id):
+        raise ValueError("invalid key_id")
+    if not isinstance(config_version, str) or not 1 <= len(config_version) <= 128:
+        raise ValueError("config_version must contain 1 to 128 characters")
+    if value["modality"] != "video":
+        raise ValueError("T-019 Brain ingress supports only video primary sensors")
+    if value["severity"] not in {"low", "medium", "high", "critical"}:
+        raise ValueError("invalid severity")
+    key_file = _external_absolute_path(value["key_file"], "key_file", must_exist=True)
+    outbox_path = _external_absolute_path(value["outbox_path"], "outbox_path", must_exist=False)
+    if not outbox_path.parent.is_dir():
+        raise ValueError("outbox_path parent directory must already exist")
+    config = IngressConfig(
+        producer_id=producer_id,
+        tenant_id=_positive_int(value["tenant_id"], "tenant_id"),
+        site_id=_positive_int(value["site_id"], "site_id"),
+        device_id=_positive_int(value["device_id"], "device_id"),
+        modality="video",
+        severity=value["severity"],
+        config_version=config_version,
+        bell_url=_validate_bell_url(value["bell_url"]),
+        key_id=key_id,
+        key_file=key_file,
+        outbox_path=outbox_path,
+    )
+    document = _load_json_file(key_file)
+    if not isinstance(document, dict) or set(document) != {"version", "keys"} or document.get("version") != 1:
+        raise ValueError("invalid event ingress key document")
+    keys = document.get("keys")
+    if not isinstance(keys, list) or not keys:
+        raise ValueError("event ingress key document has no keys")
+    selected: KeyMaterial | None = None
+    seen: set[str] = set()
+    for item in keys:
+        if not isinstance(item, dict) or set(item) != {"key_id", "producer_id", "secret_base64url"}:
+            raise ValueError("invalid event ingress key entry")
+        item_key = item["key_id"]
+        item_producer = item["producer_id"]
+        encoded = item["secret_base64url"]
+        if not isinstance(item_key, str) or not _ID.fullmatch(item_key) or item_key in seen:
+            raise ValueError("invalid or duplicate event ingress key ID")
+        if not isinstance(item_producer, str) or not _ID.fullmatch(item_producer) or not isinstance(encoded, str):
+            raise ValueError("invalid event ingress key entry")
+        seen.add(item_key)
+        try:
+            secret = base64.b64decode(encoded + "=" * (-len(encoded) % 4), altchars=b"-_", validate=True)
+        except (ValueError, binascii.Error) as exc:
+            raise ValueError("invalid event ingress secret") from exc
+        if len(secret) < 32:
+            raise ValueError("event ingress secret must contain at least 32 bytes")
+        if item_key == key_id:
+            selected = KeyMaterial(item_key, item_producer, secret)
+    if selected is None or selected.producer_id != producer_id:
+        raise ValueError("selected key is not bound to the configured producer")
+    return config, selected
+
+
+def map_candidate(value: EventCandidate, config: IngressConfig) -> bytes:
+    if not _SOURCE_ID.fullmatch(value.source_event_id):
+        raise ValueError("invalid source_event_id")
+    payload = {
+        "schema_version": "0.1",
+        "source_event_id": value.source_event_id,
+        "tenant_id": config.tenant_id,
+        "site_id": config.site_id,
+        "device_id": config.device_id,
+        "sensors": [{"device_id": config.device_id, "modality": config.modality, "role": "primary"}],
+        "kind": value.kind,
+        "severity": config.severity,
+        "confidence": None,
+        "occurred_at": value.occurred_at,
+        "detected_at": value.occurred_at,
+        "latency_seconds": 0.0,
+        "config_version": config.config_version,
+        "rule": None,
+        "subject": {
+            "class": "person",
+            "track_id": value.track_id,
+            "attributes": {},
+            "anon_id": None,
+            "identity": None,
+            "identity_status": "not_enabled",
+        },
+        "observation": {
+            "zone": value.zone_id,
+            "dwell_sec": 0.0,
+            "bbox_seq_uri": None,
+            "keypoint_seq_uri": None,
+            "signal_seq_uri": None,
+        },
+        "evidence": {"snapshot_uris": [], "clip_uri": None, "clip_range": None},
+        "dedup_key": None,
+        "aggregated_into": None,
+        "outcome": "test" if value.fixture else "unknown",
+        "outcome_source": "auto" if value.fixture else None,
+        "outcome_reason": None,
+        "diagnostics": None,
+        "ext": {"brain_candidate_version": "brain-demo-v1", "zone_version": value.zone_version},
+    }
+    encoded = json.dumps(payload, ensure_ascii=False, sort_keys=True, separators=(",", ":")).encode("utf-8")
+    if len(encoded) > MAX_PAYLOAD_BYTES:
+        raise ValueError("event candidate exceeds 1 MiB")
+    return encoded
+
+
+class EventOutbox:
+    def __init__(self, path: Path, *, now: Callable[[], float] = time.time) -> None:
+        if not path.is_absolute() or _is_within(path.resolve(), _REPO_ROOT):
+            raise ValueError("outbox path must be absolute and external")
+        self._now = now
+        self._lock = threading.RLock()
+        self._connection = sqlite3.connect(str(path), timeout=5.0, isolation_level=None, check_same_thread=False)
+        self._connection.row_factory = sqlite3.Row
+        self._connection.execute("PRAGMA journal_mode=WAL")
+        self._connection.execute("PRAGMA synchronous=FULL")
+        self._connection.execute("PRAGMA foreign_keys=ON")
+        self._connection.executescript(
+            """
+            CREATE TABLE IF NOT EXISTS event_outbox (
+                source_event_id TEXT PRIMARY KEY,
+                candidate_hash BLOB NOT NULL,
+                payload BLOB NOT NULL,
+                state TEXT NOT NULL CHECK(state IN ('queued','delivering','delivered','dead_letter')),
+                attempt_count INTEGER NOT NULL DEFAULT 0 CHECK(attempt_count BETWEEN 0 AND 100),
+                available_at REAL NOT NULL,
+                lease_until REAL,
+                bell_event_id TEXT,
+                last_error_code TEXT,
+                created_at REAL NOT NULL,
+                updated_at REAL NOT NULL,
+                delivered_at REAL,
+                dead_lettered_at REAL,
+                CHECK(length(candidate_hash)=32),
+                CHECK(length(payload)<=1048576),
+                CHECK((state='delivering')=(lease_until IS NOT NULL)),
+                CHECK(delivered_at IS NULL OR dead_lettered_at IS NULL)
+            );
+            CREATE INDEX IF NOT EXISTS event_outbox_due_idx
+                ON event_outbox(available_at, created_at, source_event_id)
+                WHERE state='queued';
+            CREATE TABLE IF NOT EXISTS event_outbox_identity (
+                singleton INTEGER PRIMARY KEY CHECK(singleton=1),
+                producer_id TEXT NOT NULL,
+                tenant_id INTEGER NOT NULL CHECK(tenant_id>=1),
+                site_id INTEGER NOT NULL CHECK(site_id>=1),
+                device_id INTEGER NOT NULL CHECK(device_id>=1)
+            );
+            """
+        )
+
+    def bind_identity(self, config: IngressConfig) -> None:
+        identity = (config.producer_id, config.tenant_id, config.site_id, config.device_id)
+        with self._lock:
+            self._connection.execute("BEGIN IMMEDIATE")
+            try:
+                row = self._connection.execute(
+                    "SELECT producer_id,tenant_id,site_id,device_id FROM event_outbox_identity WHERE singleton=1"
+                ).fetchone()
+                if row is None:
+                    self._connection.execute(
+                        """INSERT INTO event_outbox_identity(
+                           singleton,producer_id,tenant_id,site_id,device_id
+                           ) VALUES (1,?,?,?,?)""",
+                        identity,
+                    )
+                elif tuple(row) != identity:
+                    raise ValueError("event outbox is bound to a different producer or device identity")
+                self._connection.execute("COMMIT")
+            except Exception:
+                self._connection.execute("ROLLBACK")
+                raise
+
+    def enqueue(self, payload: bytes) -> bool:
+        if not 0 < len(payload) <= MAX_PAYLOAD_BYTES:
+            raise ValueError("event candidate payload must contain at most 1 MiB")
+        try:
+            candidate = json.loads(payload)
+            source_event_id = candidate["source_event_id"]
+        except (UnicodeError, json.JSONDecodeError, KeyError, TypeError) as exc:
+            raise ValueError("invalid event candidate payload") from exc
+        if not isinstance(source_event_id, str) or not _SOURCE_ID.fullmatch(source_event_id):
+            raise ValueError("invalid source_event_id")
+        digest = hashlib.sha256(payload).digest()
+        now = self._now()
+        with self._lock:
+            self._connection.execute("BEGIN IMMEDIATE")
+            try:
+                existing = self._connection.execute(
+                    "SELECT candidate_hash FROM event_outbox WHERE source_event_id=?", (source_event_id,)
+                ).fetchone()
+                if existing is not None:
+                    if not hmac.compare_digest(existing["candidate_hash"], digest):
+                        raise ValueError("source_event_id already has a different candidate")
+                    self._connection.execute("COMMIT")
+                    return False
+                active = self._connection.execute(
+                    "SELECT count(*) FROM event_outbox WHERE state IN ('queued','delivering')"
+                ).fetchone()[0]
+                if active >= MAX_QUEUED:
+                    raise RuntimeError("event outbox capacity exceeded")
+                self._connection.execute(
+                    """INSERT INTO event_outbox(
+                        source_event_id,candidate_hash,payload,state,available_at,created_at,updated_at
+                    ) VALUES (?,?,?,'queued',?,?,?)""",
+                    (source_event_id, digest, payload, now, now, now),
+                )
+                self._connection.execute("COMMIT")
+                return True
+            except Exception:
+                self._connection.execute("ROLLBACK")
+                raise
+
+    def lease_one(self, lease_seconds: float = 30.0) -> LeasedEvent | None:
+        now = self._now()
+        with self._lock:
+            self._connection.execute("BEGIN IMMEDIATE")
+            try:
+                self._connection.execute(
+                    """UPDATE event_outbox SET state='dead_letter', lease_until=NULL,
+                       last_error_code='retry_exhausted', dead_lettered_at=?, updated_at=?
+                       WHERE attempt_count>=? AND (
+                         state='queued' OR (state='delivering' AND lease_until<=?)
+                       )""",
+                    (now, now, MAX_ATTEMPTS, now),
+                )
+                self._connection.execute(
+                    """UPDATE event_outbox SET state='queued', lease_until=NULL,
+                       available_at=?, last_error_code='lease_expired', updated_at=?
+                       WHERE state='delivering' AND lease_until<=? AND attempt_count<?""",
+                    (now, now, now, MAX_ATTEMPTS),
+                )
+                row = self._connection.execute(
+                    """SELECT source_event_id,payload,attempt_count FROM event_outbox
+                       WHERE state='queued' AND available_at<=? AND attempt_count<?
+                       ORDER BY available_at,created_at,source_event_id LIMIT 1""",
+                    (now, MAX_ATTEMPTS),
+                ).fetchone()
+                if row is None:
+                    self._connection.execute("COMMIT")
+                    return None
+                attempt = row["attempt_count"] + 1
+                self._connection.execute(
+                    """UPDATE event_outbox SET state='delivering',attempt_count=?,lease_until=?,updated_at=?
+                       WHERE source_event_id=? AND state='queued'""",
+                    (attempt, now + lease_seconds, now, row["source_event_id"]),
+                )
+                self._connection.execute("COMMIT")
+                return LeasedEvent(row["source_event_id"], bytes(row["payload"]), attempt)
+            except Exception:
+                self._connection.execute("ROLLBACK")
+                raise
+
+    def mark_delivered(self, item: LeasedEvent, result: DeliveryResult) -> None:
+        now = self._now()
+        with self._lock:
+            changed = self._connection.execute(
+                """UPDATE event_outbox SET state='delivered',lease_until=NULL,bell_event_id=?,
+                   last_error_code=NULL,delivered_at=?,updated_at=?
+                   WHERE source_event_id=? AND state='delivering' AND attempt_count=?""",
+                (result.event_id, now, now, item.source_event_id, item.attempt_count),
+            ).rowcount
+        if changed != 1:
+            raise RuntimeError("event outbox delivery lease was lost")
+
+    def mark_retry(self, item: LeasedEvent, code: str) -> None:
+        now = self._now()
+        if item.attempt_count >= MAX_ATTEMPTS:
+            self.mark_dead(item, "retry_exhausted")
+            return
+        delay = min(300.0, float(2 ** min(item.attempt_count - 1, 9)))
+        with self._lock:
+            changed = self._connection.execute(
+                """UPDATE event_outbox SET state='queued',lease_until=NULL,available_at=?,
+                   last_error_code=?,updated_at=?
+                   WHERE source_event_id=? AND state='delivering' AND attempt_count=?""",
+                (now + delay, _safe_error(code), now, item.source_event_id, item.attempt_count),
+            ).rowcount
+        if changed != 1:
+            raise RuntimeError("event outbox retry lease was lost")
+
+    def mark_dead(self, item: LeasedEvent, code: str) -> None:
+        now = self._now()
+        with self._lock:
+            changed = self._connection.execute(
+                """UPDATE event_outbox SET state='dead_letter',lease_until=NULL,
+                   last_error_code=?,dead_lettered_at=?,updated_at=?
+                   WHERE source_event_id=? AND state='delivering' AND attempt_count=?""",
+                (_safe_error(code), now, now, item.source_event_id, item.attempt_count),
+            ).rowcount
+        if changed != 1:
+            raise RuntimeError("event outbox dead-letter lease was lost")
+
+    def status(self) -> dict[str, object]:
+        with self._lock:
+            counts = {row["state"]: row["count"] for row in self._connection.execute(
+                "SELECT state,count(*) AS count FROM event_outbox GROUP BY state"
+            )}
+            error = self._connection.execute(
+                """SELECT last_error_code FROM event_outbox WHERE last_error_code IS NOT NULL
+                   ORDER BY updated_at DESC LIMIT 1"""
+            ).fetchone()
+        return {
+            "enabled": True,
+            "queued": counts.get("queued", 0),
+            "delivering": counts.get("delivering", 0),
+            "delivered": counts.get("delivered", 0),
+            "dead_letter": counts.get("dead_letter", 0),
+            "last_error_code": None if error is None else error["last_error_code"],
+        }
+
+    def close(self) -> None:
+        with self._lock:
+            self._connection.close()
+
+
+class EventIngressClient:
+    def __init__(self, config: IngressConfig, key: KeyMaterial, *, now: Callable[[], float] = time.time) -> None:
+        self._config = config
+        self._key = key
+        self._now = now
+        # Internal event payloads must never be redirected through ambient
+        # HTTP(S)_PROXY settings.
+        self._opener = build_opener(ProxyHandler({}), _NoRedirect())
+
+    def deliver(self, candidate: bytes) -> DeliveryResult:
+        try:
+            candidate_object = json.loads(candidate)
+        except (UnicodeError, json.JSONDecodeError) as exc:
+            raise PermanentDelivery("candidate_invalid") from exc
+        body = json.dumps(
+            {"schema_version": 1, "producer_id": self._config.producer_id, "candidate": candidate_object},
+            ensure_ascii=False,
+            sort_keys=True,
+            separators=(",", ":"),
+        ).encode("utf-8")
+        if len(body) > MAX_PAYLOAD_BYTES:
+            raise PermanentDelivery("payload_too_large")
+        timestamp = str(int(self._now()))
+        nonce = base64.urlsafe_b64encode(secrets.token_bytes(16)).rstrip(b"=").decode("ascii")
+        digest = hashlib.sha256(body).hexdigest()
+        canonical = "\n".join(("POST", INGRESS_PATH, timestamp, nonce, digest)).encode("utf-8")
+        signature_value = base64.urlsafe_b64encode(hmac.new(self._key.secret, canonical, hashlib.sha256).digest()).rstrip(b"=").decode("ascii")
+        request = Request(self._config.bell_url, data=body, method="POST")
+        request.add_header("Content-Type", "application/json")
+        request.add_header("X-YoVision-Key-Id", self._key.key_id)
+        request.add_header("X-YoVision-Timestamp", timestamp)
+        request.add_header("X-YoVision-Nonce", nonce)
+        request.add_header("X-YoVision-Signature", signature_value)
+        try:
+            with self._opener.open(request, timeout=HTTP_TIMEOUT_SECONDS) as response:
+                status = response.status
+                response_body = response.read(64 << 10)
+        except HTTPError as exc:
+            status = exc.code
+            response_body = exc.read(64 << 10)
+        except (URLError, TimeoutError, OSError) as exc:
+            raise RetryableDelivery("network_error") from exc
+        if status in {200, 201}:
+            try:
+                value = json.loads(response_body)
+                response_status = value["status"]
+                event_id = value["event_id"]
+                if (
+                    value["schema_version"] != 1
+                    or value["producer_id"] != self._config.producer_id
+                    or value["source_event_id"] != candidate_object["source_event_id"]
+                    or response_status not in {"accepted", "duplicate"}
+                    or not isinstance(event_id, str)
+                    or not _EVENT_ID.fullmatch(event_id)
+                ):
+                    raise ValueError
+            except (KeyError, TypeError, ValueError, json.JSONDecodeError) as exc:
+                raise RetryableDelivery("invalid_response") from exc
+            return DeliveryResult(response_status, event_id)
+        code = "http_error"
+        try:
+            error_value = json.loads(response_body)
+            if isinstance(error_value, dict) and isinstance(error_value.get("error"), str):
+                code = error_value["error"]
+        except (UnicodeError, json.JSONDecodeError):
+            pass
+        if status == 401 or status >= 500:
+            raise RetryableDelivery(code)
+        raise PermanentDelivery(code)
+
+
+class EventRelayWorker:
+    def __init__(self, outbox: EventOutbox, client: EventIngressClient) -> None:
+        self._outbox = outbox
+        self._client = client
+        self._stop = threading.Event()
+        self._thread: threading.Thread | None = None
+        self._last_error_code: str | None = None
+
+    def run_once(self) -> bool:
+        item = self._outbox.lease_one()
+        if item is None:
+            return False
+        try:
+            result = self._client.deliver(item.payload)
+        except PermanentDelivery as exc:
+            self._outbox.mark_dead(item, exc.code)
+        except RetryableDelivery as exc:
+            self._outbox.mark_retry(item, exc.code)
+        except Exception:
+            self._outbox.mark_retry(item, "client_error")
+        else:
+            self._outbox.mark_delivered(item, result)
+        return True
+
+    def start(self) -> None:
+        if self._thread is not None:
+            return
+        self._thread = threading.Thread(target=self._run, name="brain-event-relay", daemon=True)
+        self._thread.start()
+
+    def _run(self) -> None:
+        while not self._stop.is_set():
+            try:
+                worked = self.run_once()
+                self._last_error_code = None
+            except Exception:
+                self._last_error_code = "event_outbox_unavailable"
+                self._stop.wait(1.0)
+                continue
+            if not worked:
+                self._stop.wait(0.25)
+
+    def stop(self) -> None:
+        self._stop.set()
+        if self._thread is not None:
+            self._thread.join(timeout=HTTP_TIMEOUT_SECONDS + 2.0)
+            self._thread = None
+
+    def last_error_code(self) -> str | None:
+        return self._last_error_code
+
+
+class BrainEventIngress:
+    def __init__(self, config: IngressConfig, key: KeyMaterial) -> None:
+        self._config = config
+        self._outbox = EventOutbox(config.outbox_path)
+        self._outbox.bind_identity(config)
+        self._worker = EventRelayWorker(self._outbox, EventIngressClient(config, key))
+
+    @classmethod
+    def from_file(cls, path: str) -> "BrainEventIngress":
+        config, key = load_config(path)
+        return cls(config, key)
+
+    def submit(self, value: EventCandidate) -> None:
+        self._outbox.enqueue(map_candidate(value, self._config))
+
+    def start(self) -> None:
+        self._worker.start()
+
+    def stop(self) -> None:
+        self._worker.stop()
+        self._outbox.close()
+
+    def status(self) -> dict[str, object]:
+        value = self._outbox.status()
+        if self._worker.last_error_code() is not None:
+            value["last_error_code"] = self._worker.last_error_code()
+        return value
+
+
+def _safe_error(value: str) -> str:
+    if not isinstance(value, str) or not _ERROR_CODE.fullmatch(value):
+        return "unknown_error"
+    return value

Brain/yovision_brain/runtime.py

@@ -0,0 +1,195 @@
+from __future__ import annotations
+
+import math
+import threading
+import time
+from collections import deque
+from datetime import datetime, timezone
+from typing import Any
+
+from .domain import Detection, Point, Zone, ZoneEntryEvaluator, zone_from_payload
+from .source import CentroidTracker, HOGPersonDetector, require_opencv
+
+try:
+    import cv2  # type: ignore
+except ImportError:  # pragma: no cover
+    cv2 = None
+
+
+DEFAULT_ZONE = Zone(
+    "zone-demo-01",
+    "楼梯口危险区",
+    1,
+    (Point(0.55, 0.30), Point(0.90, 0.30), Point(0.90, 0.88), Point(0.55, 0.88)),
+)
+
+
+class EventIngressUnavailable(RuntimeError):
+    pass
+
+
+class DemoEngine:
+    def __init__(self, source: Any, fps: float = 2.0, event_limit: int = 100, event_ingress: Any | None = None) -> None:
+        if not math.isfinite(fps) or fps <= 0.0 or fps > 30.0:
+            raise ValueError("fps must be within (0, 30]")
+        if not 1 <= event_limit <= 100:
+            raise ValueError("event_limit must be within [1, 100]")
+        require_opencv()
+        self._source = source
+        self._fps = fps
+        self._detector = None if source.fixture else HOGPersonDetector()
+        self._tracker = CentroidTracker()
+        self._evaluator = ZoneEntryEvaluator(source.source_ref, source.fixture)
+        self._event_ingress = event_ingress
+        self._zone = DEFAULT_ZONE
+        self._events: deque[dict[str, object]] = deque(maxlen=event_limit)
+        self._lock = threading.RLock()
+        self._stop = threading.Event()
+        self._thread: threading.Thread | None = None
+        self._sequence = 0
+        self._frame_jpeg: bytes | None = None
+        self._frame_width = 0
+        self._frame_height = 0
+        self._captured_at: str | None = None
+        self._detections: list[dict[str, object]] = []
+        self._latency_ms: float | None = None
+        self._connected = False
+        self._last_error_code: str | None = None
+
+    def start(self) -> None:
+        if self._thread is not None:
+            return
+        if self._event_ingress is not None:
+            self._event_ingress.start()
+        self._thread = threading.Thread(target=self._run, name="brain-demo", daemon=True)
+        self._thread.start()
+
+    def stop(self) -> None:
+        self._stop.set()
+        if self._thread is not None:
+            self._thread.join(timeout=3.0)
+            self._thread = None
+        if self._event_ingress is not None:
+            self._event_ingress.stop()
+        self._source.close()
+
+    def _run(self) -> None:
+        interval = 1.0 / self._fps
+        while not self._stop.is_set():
+            started = time.perf_counter()
+            try:
+                self.step()
+            except EventIngressUnavailable:
+                with self._lock:
+                    self._last_error_code = "event_outbox_unavailable"
+            except RuntimeError:
+                with self._lock:
+                    self._connected = False
+                    self._last_error_code = "source_unavailable"
+            elapsed = time.perf_counter() - started
+            self._stop.wait(max(0.0, interval - elapsed))
+
+    def step(self) -> None:
+        started = time.perf_counter()
+        packet = self._source.read()
+        self._sequence += 1
+        if packet.scripted_detections is not None:
+            detections = list(packet.scripted_detections)
+        else:
+            raw_boxes = self._detector.detect(packet.frame) if self._detector is not None else []
+            detections = self._tracker.update(raw_boxes, self._sequence)
+        with self._lock:
+            zone = self._zone
+        new_events, inside_by_track = self._evaluator.evaluate(self._sequence, packet.captured_at, zone, detections)
+        if self._event_ingress is not None:
+            try:
+                for item in new_events:
+                    self._event_ingress.submit(item)
+            except Exception as exc:
+                raise EventIngressUnavailable("persist event candidate") from exc
+        ok, encoded = cv2.imencode(".jpg", packet.frame, [int(cv2.IMWRITE_JPEG_QUALITY), 82])
+        if not ok:
+            raise RuntimeError("frame encoding failed")
+        height, width = packet.frame.shape[:2]
+        serialized_detections = [self._serialize_detection(item, inside_by_track.get(item.track_id, False)) for item in detections]
+        with self._lock:
+            for event in new_events:
+                serialized_event = event.as_dict()
+                if self._event_ingress is not None:
+                    # This is an immutable handoff fact, not a live delivery
+                    # status. Current counts live under event_ingress.
+                    serialized_event["delivery_status"] = "outbox_persisted"
+                self._events.appendleft(serialized_event)
+            self._frame_jpeg = encoded.tobytes()
+            self._frame_width = int(width)
+            self._frame_height = int(height)
+            self._captured_at = packet.captured_at.astimezone(timezone.utc).isoformat().replace("+00:00", "Z")
+            self._detections = serialized_detections
+            self._latency_ms = round((time.perf_counter() - started) * 1000.0, 1)
+            self._connected = True
+            self._last_error_code = None
+
+    @staticmethod
+    def _serialize_detection(detection: Detection, inside: bool) -> dict[str, object]:
+        return {
+            "track_id": detection.track_id,
+            "class": detection.class_name,
+            "bbox": [detection.box.x1, detection.box.y1, detection.box.x2, detection.box.y2],
+            "detector_score": detection.detector_score,
+            "inside_zone": inside,
+        }
+
+    def update_zone(self, payload: object) -> Zone:
+        with self._lock:
+            updated = zone_from_payload(payload, self._zone)
+            self._zone = updated
+            self._evaluator.reset()
+            return updated
+
+    def frame_jpeg(self) -> bytes | None:
+        with self._lock:
+            return self._frame_jpeg
+
+    def state(self) -> dict[str, object]:
+        with self._lock:
+            zone = self._zone
+            if self._event_ingress is None:
+                ingress_status: dict[str, object] = {"enabled": False}
+            else:
+                try:
+                    ingress_status = self._event_ingress.status()
+                except Exception:
+                    ingress_status = {"enabled": True, "last_error_code": "event_outbox_unavailable"}
+            return {
+                "prototype": True,
+                "notice": "工程原型；合成回放不是模型输出，HOG 适配器不是生产检测模型。",
+                "source": {
+                    "mode": self._source.mode,
+                    "label": self._source.label,
+                    "fixture": self._source.fixture,
+                    "connected": self._connected,
+                    "ref": self._source.source_ref,
+                },
+                "detector": {
+                    "name": "scripted_fixture" if self._source.fixture else self._detector.name,
+                    "production_ready": False,
+                },
+                "frame": {
+                    "sequence": self._sequence,
+                    "width": self._frame_width,
+                    "height": self._frame_height,
+                    "captured_at": self._captured_at,
+                },
+                "inference": {"target_fps": self._fps, "latency_ms": self._latency_ms},
+                "zone": {
+                    "id": zone.zone_id,
+                    "name": zone.name,
+                    "version": zone.version,
+                    "points": [{"x": point.x, "y": point.y} for point in zone.points],
+                },
+                "detections": list(self._detections),
+                "events": list(self._events),
+                "event_ingress": ingress_status,
+                "last_error_code": self._last_error_code,
+                "generated_at": datetime.now(timezone.utc).isoformat().replace("+00:00", "Z"),
+            }

Brain/yovision_brain/server.py

@@ -0,0 +1,141 @@
+from __future__ import annotations
+
+import hmac
+import json
+import secrets
+from http import HTTPStatus
+from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
+from pathlib import Path
+from typing import Any
+from urllib.parse import urlsplit
+
+from .domain import Zone
+
+
+MAX_BODY_BYTES = 64 * 1024
+
+
+def parse_bind(value: str) -> tuple[str, int]:
+    parsed = urlsplit(f"//{value}")
+    host = parsed.hostname
+    try:
+        port = parsed.port
+    except ValueError as exc:
+        raise ValueError("invalid demo bind address") from exc
+    if host not in {"127.0.0.1", "localhost", "::1"} or port is None or not 1 <= port <= 65535:
+        raise ValueError("Brain demo must bind to an explicit loopback address and valid port")
+    return host, port
+
+
+def index_path() -> Path:
+    return Path(__file__).resolve().parents[2] / "docs" / "design" / "brain" / "index.html"
+
+
+class DemoHTTPServer(ThreadingHTTPServer):
+    daemon_threads = True
+
+    def __init__(self, address: tuple[str, int], engine: Any, token: str, html: str) -> None:
+        self.engine = engine
+        self.demo_token = token
+        self.html = html
+        super().__init__(address, DemoHandler)
+
+
+class DemoHandler(BaseHTTPRequestHandler):
+    server: DemoHTTPServer
+
+    def log_message(self, _format: str, *_args: object) -> None:
+        # Do not echo request paths or headers; URL credentials never reach HTTP paths.
+        return
+
+    def _security_headers(self) -> None:
+        self.send_header("X-Content-Type-Options", "nosniff")
+        self.send_header("X-Frame-Options", "DENY")
+        self.send_header("Referrer-Policy", "no-referrer")
+        self.send_header("Cache-Control", "no-store")
+        self.send_header(
+            "Content-Security-Policy",
+            "default-src 'self'; style-src 'unsafe-inline'; script-src 'unsafe-inline'; "
+            "img-src 'self' data: blob:; connect-src 'self'; base-uri 'none'; frame-ancestors 'none'",
+        )
+
+    def _send_bytes(self, status: int, content_type: str, body: bytes) -> None:
+        self.send_response(status)
+        self.send_header("Content-Type", content_type)
+        self.send_header("Content-Length", str(len(body)))
+        self._security_headers()
+        self.end_headers()
+        self.wfile.write(body)
+
+    def _send_json(self, status: int, payload: object) -> None:
+        body = json.dumps(payload, ensure_ascii=False, separators=(",", ":")).encode("utf-8")
+        self._send_bytes(status, "application/json; charset=utf-8", body)
+
+    def do_GET(self) -> None:  # noqa: N802
+        path = urlsplit(self.path).path
+        if path in {"/", "/brain-demo"}:
+            body = self.server.html.replace("__BRAIN_DEMO_TOKEN__", self.server.demo_token).encode("utf-8")
+            self._send_bytes(HTTPStatus.OK, "text/html; charset=utf-8", body)
+            return
+        if path == "/healthz":
+            self._send_json(HTTPStatus.OK, {"status": "ok"})
+            return
+        if path == "/api/v1/state":
+            self._send_json(HTTPStatus.OK, self.server.engine.state())
+            return
+        if path == "/api/v1/frame.jpg":
+            frame = self.server.engine.frame_jpeg()
+            if frame is None:
+                self._send_json(HTTPStatus.SERVICE_UNAVAILABLE, {"code": "frame_not_ready"})
+                return
+            self._send_bytes(HTTPStatus.OK, "image/jpeg", frame)
+            return
+        self._send_json(HTTPStatus.NOT_FOUND, {"code": "not_found"})
+
+    def do_PUT(self) -> None:  # noqa: N802
+        if urlsplit(self.path).path != "/api/v1/zones/active":
+            self._send_json(HTTPStatus.NOT_FOUND, {"code": "not_found"})
+            return
+        raw_length = self.headers.get("Content-Length")
+        try:
+            length = int(raw_length or "-1")
+        except ValueError:
+            length = -1
+        if length < 0 or length > MAX_BODY_BYTES:
+            self._send_json(HTTPStatus.REQUEST_ENTITY_TOO_LARGE, {"code": "body_too_large"})
+            return
+        body = self.rfile.read(length)
+        supplied = self.headers.get("X-Brain-Demo-Token", "")
+        if not hmac.compare_digest(supplied, self.server.demo_token):
+            self._send_json(HTTPStatus.FORBIDDEN, {"code": "forbidden"})
+            return
+        try:
+            payload = json.loads(body.decode("utf-8"))
+            zone: Zone = self.server.engine.update_zone(payload)
+        except (UnicodeError, json.JSONDecodeError, ValueError):
+            self._send_json(HTTPStatus.BAD_REQUEST, {"code": "invalid_zone"})
+            return
+        self._send_json(
+            HTTPStatus.OK,
+            {
+                "id": zone.zone_id,
+                "name": zone.name,
+                "version": zone.version,
+                "points": [{"x": point.x, "y": point.y} for point in zone.points],
+            },
+        )
+
+
+def build_server(engine: Any, bind: str = "127.0.0.1:8090", token: str | None = None) -> DemoHTTPServer:
+    html = index_path().read_text(encoding="utf-8")
+    return DemoHTTPServer(parse_bind(bind), engine, token or secrets.token_urlsafe(32), html)
+
+
+def serve(engine: Any, bind: str) -> None:
+    server = build_server(engine, bind)
+    engine.start()
+    try:
+        server.serve_forever(poll_interval=0.25)
+    finally:
+        server.server_close()
+        engine.stop()

Brain/yovision_brain/source.py

@@ -0,0 +1,201 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+from datetime import datetime, timezone
+from pathlib import Path
+from typing import Any, Iterable
+from urllib.parse import urlsplit
+
+from .domain import Box, Detection
+
+try:
+    import cv2  # type: ignore
+    import numpy as np  # type: ignore
+except ImportError:  # pragma: no cover - exercised by the startup failure path
+    cv2 = None
+    np = None
+
+
+@dataclass(frozen=True)
+class FramePacket:
+    frame: Any
+    captured_at: datetime
+    scripted_detections: tuple[Detection, ...] | None
+
+
+def require_opencv() -> None:
+    if cv2 is None or np is None:
+        raise RuntimeError("Brain demo requires the pinned NumPy and OpenCV packages")
+
+
+def read_stream_url(path_value: str) -> str:
+    path = Path(path_value)
+    if not path.is_absolute():
+        raise ValueError("stream URL file must be an absolute external path")
+    try:
+        resolved = path.resolve(strict=True)
+    except OSError as exc:
+        raise ValueError("stream URL file does not exist") from exc
+    if not resolved.is_file():
+        raise ValueError("stream URL file does not exist")
+    repository_root = Path(__file__).resolve().parents[2]
+    try:
+        resolved.relative_to(repository_root)
+    except ValueError:
+        pass
+    else:
+        raise ValueError("stream URL file must be outside the repository")
+    try:
+        with resolved.open("rb") as stream:
+            raw = stream.read(4097)
+    except OSError as exc:
+        raise ValueError("stream URL file cannot be read") from exc
+    if len(raw) > 4096:
+        raise ValueError("stream URL file exceeds 4096 bytes")
+    try:
+        lines = raw.decode("utf-8").splitlines()
+    except UnicodeError as exc:
+        raise ValueError("stream URL file must be UTF-8") from exc
+    values = [line.strip() for line in lines if line.strip()]
+    if len(values) != 1:
+        raise ValueError("stream URL file must contain exactly one non-empty line")
+    parsed = urlsplit(values[0])
+    if parsed.scheme not in {"rtsp", "rtsps"} or not parsed.hostname:
+        raise ValueError("stream URL must be an RTSP URL")
+    return values[0]
+
+
+class SyntheticSource:
+    mode = "synthetic"
+    label = "合成回放"
+    fixture = True
+    source_ref = "demo-camera-01"
+
+    def __init__(self, width: int = 960, height: int = 540) -> None:
+        require_opencv()
+        self.width = width
+        self.height = height
+        self._sequence = 0
+
+    def read(self) -> FramePacket:
+        self._sequence += 1
+        frame = np.zeros((self.height, self.width, 3), dtype=np.uint8)
+        frame[:] = (20, 28, 42)
+        cv2.rectangle(frame, (0, int(self.height * 0.72)), (self.width, self.height), (31, 42, 58), -1)
+        for x in range(0, self.width, 80):
+            cv2.line(frame, (x, int(self.height * 0.72)), (x + 80, self.height), (43, 57, 75), 1)
+        cv2.putText(frame, "SYNTHETIC FIXTURE - NOT MODEL OUTPUT", (24, 38), cv2.FONT_HERSHEY_SIMPLEX, 0.72, (82, 190, 245), 2)
+
+        phase = ((self._sequence - 1) % 160) / 159.0
+        center_x = -0.04 + phase * 1.08
+        x1 = max(0.0, center_x - 0.04)
+        x2 = min(1.0, center_x + 0.04)
+        detections: tuple[Detection, ...] = ()
+        if x2 - x1 > 0.01:
+            box = Box(x1, 0.34, x2, 0.82)
+            detections = (Detection("P-DEMO-001", "person", box, None),)
+            px = int(center_x * self.width)
+            head_y = int(self.height * 0.40)
+            cv2.circle(frame, (px, head_y), 17, (195, 210, 225), -1)
+            cv2.line(frame, (px, head_y + 18), (px, int(self.height * 0.65)), (195, 210, 225), 12)
+            cv2.line(frame, (px, int(self.height * 0.52)), (px - 30, int(self.height * 0.60)), (195, 210, 225), 8)
+            cv2.line(frame, (px, int(self.height * 0.52)), (px + 30, int(self.height * 0.60)), (195, 210, 225), 8)
+            cv2.line(frame, (px, int(self.height * 0.65)), (px - 24, int(self.height * 0.79)), (195, 210, 225), 9)
+            cv2.line(frame, (px, int(self.height * 0.65)), (px + 24, int(self.height * 0.79)), (195, 210, 225), 9)
+        return FramePacket(frame, datetime.now(timezone.utc), detections)
+
+    def close(self) -> None:
+        return
+
+
+class StreamSource:
+    mode = "stream"
+    label = "外部 MediaMTX / RTSP"
+    fixture = False
+    source_ref = "configured-video-source"
+
+    def __init__(self, stream_url: str) -> None:
+        require_opencv()
+        self._stream_url = stream_url
+        self._capture: Any = None
+
+    def _open(self) -> None:
+        if self._capture is not None:
+            self._capture.release()
+        self._capture = cv2.VideoCapture(self._stream_url)
+        self._capture.set(cv2.CAP_PROP_BUFFERSIZE, 1)
+
+    def read(self) -> FramePacket:
+        if self._capture is None or not self._capture.isOpened():
+            self._open()
+        ok, frame = self._capture.read()
+        if not ok or frame is None:
+            self._open()
+            raise RuntimeError("stream frame unavailable")
+        return FramePacket(frame, datetime.now(timezone.utc), None)
+
+    def close(self) -> None:
+        if self._capture is not None:
+            self._capture.release()
+            self._capture = None
+
+
+class HOGPersonDetector:
+    name = "opencv_hog_person_demo"
+    production_ready = False
+
+    def __init__(self) -> None:
+        require_opencv()
+        self._hog = cv2.HOGDescriptor()
+        self._hog.setSVMDetector(cv2.HOGDescriptor_getDefaultPeopleDetector())
+
+    def detect(self, frame: Any) -> list[tuple[Box, float]]:
+        height, width = frame.shape[:2]
+        scale = min(1.0, 960.0 / max(width, 1))
+        working = frame if scale == 1.0 else cv2.resize(frame, (int(width * scale), int(height * scale)))
+        boxes, weights = self._hog.detectMultiScale(working, winStride=(8, 8), padding=(8, 8), scale=1.05)
+        result: list[tuple[Box, float]] = []
+        work_height, work_width = working.shape[:2]
+        for raw_box, weight in zip(boxes, weights):
+            x, y, box_width, box_height = (int(value) for value in raw_box)
+            x1 = max(0.0, min(1.0, x / work_width))
+            y1 = max(0.0, min(1.0, y / work_height))
+            x2 = max(0.0, min(1.0, (x + box_width) / work_width))
+            y2 = max(0.0, min(1.0, (y + box_height) / work_height))
+            if x2 > x1 and y2 > y1:
+                result.append((Box(x1, y1, x2, y2), float(weight)))
+        return result
+
+
+class CentroidTracker:
+    def __init__(self, max_distance: float = 0.18, ttl_frames: int = 8) -> None:
+        self._max_distance = max_distance
+        self._ttl_frames = ttl_frames
+        self._next_id = 1
+        self._tracks: dict[str, tuple[Box, int]] = {}
+
+    def update(self, boxes: Iterable[tuple[Box, float]], sequence: int) -> list[Detection]:
+        incoming = list(boxes)
+        available = set(self._tracks)
+        detections: list[Detection] = []
+        for box, score in incoming:
+            center = box.center
+            selected: str | None = None
+            selected_distance = self._max_distance
+            for track_id in available:
+                old_center = self._tracks[track_id][0].center
+                distance = ((center.x - old_center.x) ** 2 + (center.y - old_center.y) ** 2) ** 0.5
+                if distance < selected_distance:
+                    selected = track_id
+                    selected_distance = distance
+            if selected is None:
+                selected = f"P-{self._next_id:04d}"
+                self._next_id += 1
+            else:
+                available.remove(selected)
+            self._tracks[selected] = (box, sequence)
+            detections.append(Detection(selected, "person", box, score))
+        for track_id, (_, last_seen) in list(self._tracks.items()):
+            if sequence - last_seen > self._ttl_frames:
+                del self._tracks[track_id]
+        return detections

Sense/README.md

@@ -1,6 +1,6 @@
 # Sense M1/M2 接入骨架
 
-本目录是 YoVision Sense 的 M1/M2 接入骨架。数据库保存期望态，ONVIF 和 MediaMTX 通过端口隔离；M1 默认使用 SQLite，T-009～T-011 增加 PostgreSQL 双 schema、Area 准入、本地审计 Outbox 和 Control API v1。默认关闭真实 ONVIF 与公共业务路由；T-006 的真实样机结论仅覆盖已批准的精确海康基线，不能据此宣称多品牌兼容。
+本目录是 YoVision Sense 的接入与 NVR 管理面。数据库保存期望态，ONVIF 和 MediaMTX 通过端口隔离；M1 默认使用 SQLite，T-009～T-016 增加 PostgreSQL 双 schema、Area 准入、本地审计 Outbox、Control API v1、多实例调和 fencing、孤儿受控处置和到 Bell 的审计 relay。T-018 增加默认关闭的回环工程控制台，用于展示设备、配额、收敛状态和最多 4 路按需 MediaMTX WebRTC 预览；它不包含录像/回放，也不是生产公网入口。默认关闭真实 ONVIF、公共业务路由、控制台和 relay；T-006 的真实样机结论仅覆盖已批准的精确海康基线，不能据此宣称多品牌兼容。
 
 ## 常用命令
 
@@ -14,7 +14,7 @@ go build -o bin/sense-api.exe ./cmd/sense-api
 go run ./cmd/sense-api
 ```
 
-Unix 将构建产物改为 `bin/sense-api`。服务默认监听 `127.0.0.1:8080`，SQLite 默认写入 `Sense/data/sense.db`，MediaMTX 控制 API 默认是 `http://127.0.0.1:9997`。默认运行只暴露 `/healthz` 与 `/readyz`；只有显式选择 PostgreSQL 并完成安全配置后才注册 7 个 `/api/v1` Control API 路由。
+Unix 将构建产物改为 `bin/sense-api`。服务默认监听 `127.0.0.1:8080`，SQLite 默认写入 `Sense/data/sense.db`，MediaMTX 控制 API 默认是 `http://127.0.0.1:9997`。默认运行暴露 `/healthz`、`/readyz` 和不含租户/设备标签的 `/metrics`；只有显式选择 PostgreSQL 并完成安全配置后才注册 7 个 `/api/v1` Control API 路由，`/sense-console/` 还需独立显式开启。
 
 常用环境变量：
 
@@ -26,7 +26,13 @@ Unix 将构建产物改为 `bin/sense-api`。服务默认监听 `127.0.0.1:8080`
 | `SENSE_DB_DSN` | `file:data/sense.db` | 所选 driver 的私有 DSN；不得写入日志、文档或仓库，PostgreSQL 密码优先由 `PGPASSFILE`/环境密钥提供 |
 | `SENSE_MEDIAMTX_URL` | `http://127.0.0.1:9997` | MediaMTX 控制 API；不得包含 userinfo |
 | `SENSE_RECONCILE_INTERVAL` | `5s` | 对账周期 |
+| `SENSE_RECONCILE_LEASE_DURATION` | `30s` | PostgreSQL due-row 租期；最大 5 分钟 |
+| `SENSE_RECONCILE_OPERATION_TIMEOUT` | `20s` | 单项 ONVIF/MediaMTX deadline；必须严格短于租期 |
 | `SENSE_PROBE_INTERVAL` | `10s` | path 探活周期 |
+| `SENSE_INSTANCE_ID` | 随进程随机生成 | 最多 64 位低基数字符串；多实例部署建议显式注入唯一实例 ID |
+| `SENSE_METRICS_ENABLED` | `true` | 是否注册低基数 Prometheus 文本 `/metrics` |
+| `SENSE_ORPHAN_SCAN_ENABLED` | PostgreSQL 为 `true`，SQLite 为 `false` | 周期执行只读 MediaMTX Path 差异报告；从不自动删除 |
+| `SENSE_ORPHAN_SCAN_INTERVAL` | `1m` | 孤儿只读扫描周期，最短 10 秒 |
 | `SENSE_ONVIF_MODE` | `disabled` | `disabled` 或 `standard`；默认不访问真实摄像头 |
 | `SENSE_ONVIF_RTSP_REWRITE_HOST` | 空 | NAT 或故障代理场景下重写 ONVIF 返回的 RTSP 主机 |
 | `SENSE_ONVIF_RTSP_REWRITE_PORT` | `0` | 非零时重写 ONVIF 返回的 RTSP 端口 |
@@ -36,6 +42,13 @@ Unix 将构建产物改为 `bin/sense-api`。服务默认监听 `127.0.0.1:8080`
 | `SENSE_CONTROL_AUTH_FILE` | 空 | 仓库外绝对路径；version 1 JSON 只保存 token SHA-256、主体、tenant、Site scope 和权限 |
 | `SENSE_CONTROL_CURSOR_KEY_FILE` | 空 | 仓库外绝对路径；内容为至少 32 字节随机值的无填充 base64url |
 | `SENSE_CONTROL_ALLOW_INSECURE_HTTP` | `false` | Control API 非回环明文监听的独立风险接受；正常部署应保持回环并在受控代理终止 TLS |
+| `SENSE_CONSOLE_ENABLED` | `false` | 显式开启 `/sense-console/`；T-018 只允许与回环 Control API 一起使用 |
+| `SENSE_CONSOLE_WEBRTC_BASE_URL` | `http://127.0.0.1:8889` | MediaMTX WebRTC 浏览器入口基地址；必须为无 userinfo/path/query/fragment 的显式回环 HTTP(S) URL |
+| `SENSE_AUDIT_RELAY_ENABLED` | `false` | 显式开启 PostgreSQL Outbox → Bell relay；SQLite 不支持 |
+| `SENSE_AUDIT_RELAY_URL` | 空 | 精确指向 Bell `/internal/v1/audit-events:batch`；非回环必须 HTTPS |
+| `SENSE_AUDIT_RELAY_KEY_FILE` | 空 | 仓库外绝对路径 version 1 JSON key 文件，secret 至少 32 字节 |
+| `SENSE_AUDIT_RELAY_KEY_ID` | 空 | 本实例用于签名的 key ID |
+| `SENSE_AUDIT_RELAY_INTERVAL` | `1s` | 队列轮询间隔，最短 1 秒 |
 
 设备台账只保存 `env://<key>` 凭据引用。真实适配器从进程环境读取以下变量，不把秘密写入 SQLite、日志或 MediaMTX 错误：
 
@@ -50,11 +63,11 @@ SENSE_CREDENTIAL_<KEY>_RTSP_PASSWORD
 
 MediaMTX `v1.19.3` 应作为独立二进制启动并只在可信网络开放 API。获取与 SHA-256 校验值见 `docs/03-tech-stack.md`。生成客户端使用固定版本工具和 vendored 官方 OpenAPI；`internal/mtx/generated/client.gen.go` 不可手改。
 
-## T-009～T-011 PostgreSQL 17.10
+## T-009～T-012 PostgreSQL 17.10
 
-初始化与增量 SQL 位于 `deploy/postgres/`，由高权限部署步骤按文件名前缀执行；Sense 进程不会自动创建角色、schema 或 Bell 对象。`bell_app` 拥有 Site/Area、配额、`capture_policy` 及两个版本化视图，`sense_app` 只能读取两个视图，不能读取或写入 Bell 源表。T-011 的 v4 schema 另有资源版本、24 小时幂等收据和 batch operation 表；收据只保存 scope/body 摘要与脱敏响应快照。应用登录角色和密码由部署环境创建，不进入仓库。
+初始化与增量 SQL 位于 `deploy/postgres/`，由高权限部署步骤按文件名前缀执行；Sense 进程不会自动创建角色、schema 或 Bell 对象。`bell_app` 拥有 Site/Area、配额、`capture_policy` 及两个版本化视图，`sense_app` 只能读取两个视图，不能读取或写入 Bell 源表。T-011 的 v4 schema 增加资源版本、24 小时幂等收据和 batch operation；T-012 的 v5 schema 增加数据库时钟租约、Path 历史归属及脱敏孤儿报告/处置结果。表中不保存 MediaMTX source URI。应用登录角色和密码由部署环境创建，不进入仓库。
 
-PostgreSQL 新建设备必须携带匹配 tenant/Site 的 `area_id`。具有 `video_capture` 能力的设备在创建、移动 Area 和从 disabled 切到 enabled 时执行 Area 准入；`non_imaging_only` 拒绝成像设备但允许非成像设备。投影缺失、非法或版本回退只拒绝新变更，不关闭已有流。创建、配置修改和期望态受理都与对应脱敏 Outbox 事实同事务；停用后调和器只删除该设备的精确 MediaMTX path 并收敛为 offline，不枚举未知 path。Bell relay 尚未实现。
+PostgreSQL 新建设备必须携带匹配 tenant/Site 的 `area_id`。具有 `video_capture` 能力的设备在创建、移动 Area 和从 disabled 切到 enabled 时执行 Area 准入；`non_imaging_only` 拒绝成像设备但允许非成像设备。投影缺失、非法或版本回退只拒绝新变更，不关闭已有流。创建、配置修改和期望态受理都与对应脱敏 Outbox 事实同事务；停用后调和器只删除该设备的精确 MediaMTX path 并收敛为 offline，不枚举未知 path。开启 relay 后，Sense 用数据库 lease/fencing 批量投递，成功、重试和 dead letter 均保留本地事实；Sense 不访问 Bell schema。
 
 Windows 本机集成测试从仓库根目录执行：
 
@@ -72,7 +85,18 @@ $env:SENSE_DB_DSN = '由部署环境私下设置'
 go run ./cmd/sense-api
 ```
 
-PostgreSQL 启动会检查 Sense migration 版本及当前角色对两个 Bell 投影视图的最小权限；权限过宽、视图不可读或 schema 未安装时 readiness 初始化失败。默认 SQLite 路径和 `cmd/sense-lab` 保持不变，但 SQLite 不实现生产 Area/Outbox 一致性，Control API feature flag 在 SQLite 下会直接拒绝启动。
+PostgreSQL 基础启动会检查 Sense v5 migration、当前角色对两个 Bell 投影视图和本地控制/对账表的最小权限；启用 relay 时额外要求 v6 和本地 Outbox 权限，并确认当前 Sense 登录不能访问 Bell 全局审计表。默认 SQLite 路径和 `cmd/sense-lab` 保持不变，但 SQLite 不实现生产 Area/Outbox、多实例租约、孤儿处置或 relay 语义，Control API、孤儿扫描与 relay 在 SQLite 下不会启动。
+
+### 孤儿报告与受控处置
+
+`sense-api` 的 PostgreSQL 模式默认每分钟只读枚举一次 MediaMTX 配置 Path，并持久化汇总。`unowned` 表示没有 Sense 历史归属证据，永远不会由 Sense 删除；只有 `owned_stale` 可以进入处置候选。需要人工处置时从 `Sense/` 执行：
+
+```powershell
+go run ./cmd/sense-orphan -mode report
+go run ./cmd/sense-orphan -mode apply -scan-id scan_... -actor operator-id -confirm "DELETE scan_..."
+```
+
+`report` 输出不含 source URI 的 JSON 摘要。`apply` 会再次读取数据库和 MediaMTX，只处理仍属于原快照的 `owned_stale`，并要求快照不超过 15 分钟、候选不超过 128 且候选占当前全部配置 Path 不超过 10%；任何门禁失败均为零删除，没有 `force`。完整流程与恢复方法见 [`../docs/runbooks/sense-reconciliation.md`](../docs/runbooks/sense-reconciliation.md)。
 
 ### 开启 Control API
 
@@ -100,6 +124,20 @@ go run ./cmd/sense-api
 
 业务响应使用 `Cache-Control: no-store`；ETag 是写并发令牌，cursor 与认证 tenant/Site/筛选绑定。静态摘要文件只是首版私有部署适配器；公网/TLS、Bell 会话、JWT/OIDC 与热加载需后续任务，不能靠设置 `SENSE_CONTROL_ALLOW_INSECURE_HTTP=true` 冒充完成。
 
+### 开启 T-018 回环控制台
+
+先按上一节完成 PostgreSQL、Control API、仓库外 auth/cursor 文件和 MediaMTX 启动，再增加：
+
+```powershell
+$env:SENSE_CONSOLE_ENABLED = 'true'
+$env:SENSE_CONSOLE_WEBRTC_BASE_URL = 'http://127.0.0.1:8889'
+go run ./cmd/sense-api
+```
+
+浏览器打开 `http://127.0.0.1:8080/sense-console/`，输入已授权的 Site ID 和原始 Bearer token。token 只保留在当前页面 JavaScript 内存，输入框随即清空，刷新页面后必须重新输入；不得把 token 放进 URL、截图、命令历史或文档。设备列表默认每页 16 项，只有 `video_capture + enabled + online + converged` 的设备可选择，最多同时启动 4 路预览。
+
+播放使用 MediaMTX v1.19.3 自带浏览器 WebRTC 页面，Sense 不代理媒体字节，也不复制播放器源码。浏览器是否能解码取决于摄像头编码；首选已验收的低码率 H.264 子码流，H.265 或带 B-frame 的 H.264 不能因“Path 在线”就宣称浏览器可播放。本版 Sense 和播放端都必须显式回环；非回环 HTTPS、正式会话认证和 MediaMTX 外部鉴权需另立任务。控制台不会实现或暗示常态录像、录像计划和回放。
+
 Windows 本地准备 MediaMTX（从仓库根目录执行）：
 
 ```powershell
@@ -121,3 +159,19 @@ Linux amd64 使用同版 `mediamtx_v1.19.3_linux_amd64.tar.gz`，SHA-256 为 `a7
 ```
 
 `ip_camera.env` 必须保持在 Git 忽略范围内。调试时可把 `-ObservationMinutes` 降为 1；正式 T-006 证据必须使用默认 30 分钟，且最终 `maximum_unconverged`、`final_unconverged` 都为 0。
+
+## T-014 本地 16 路容量基线
+
+T-014 不访问摄像头或客户网络。脚本使用隔离 PostgreSQL v5、真实 Control API、两套 MediaMTX 和 16 个独立的 FFmpeg `-c copy` 合成 publisher，验证 17 路配额拒绝、三轮批量启停、`16 → 0 → 16` Path 收敛、固定四路故障隔离/恢复，以及 30 分钟稳定性和资源观测。
+
+从仓库根目录执行预检、短窗口调试和正式验收：
+
+```powershell
+./Sense/scripts/t014-capacity.ps1 -PgRoot D:\pgsql17 -PreflightOnly
+./Sense/scripts/t014-capacity.ps1 -PgRoot D:\pgsql17 -ObservationMinutes 1 -OutputPath (Join-Path $env:TEMP 'yovision-t014-smoke.json')
+./Sense/scripts/t014-capacity.ps1 -PgRoot D:\pgsql17 -OutputPath (Join-Path $env:TEMP 'yovision-t014-formal.json')
+```
+
+只有默认不少于 30 分钟且输出 `formal_eligible=true` 的单次完整运行可作正式证据；调试窗口固定标记为 false。脚本要求 PostgreSQL 17.10、MediaMTX v1.19.3、FFmpeg 8.1.2 和 `Sense/` 模块的 Go 1.26.5，只使用随机回环端口，运行后清理临时媒体、二进制、PGDATA 和秘密文件。结果 JSON 不含 token、DSN、端口、设备 ID 或流地址。
+
+2026-08-10 正式结果为 `1800.1 s / 180` 个 10 秒样本，最大/最终 `unconverged=0`、最终在线 Path 16、帧错误 0；完整版本、资源数据、失败记录和适用边界见 [`../docs/research/sense-16-stream-capacity.md`](../docs/research/sense-16-stream-capacity.md)。该结果只是本机低码率合成负载的软件基线，不代表真实 16 摄像头、客户网络、录像、AI/GPU、64/128 路或生产 SLA。

Sense/cmd/sense-api/main.go

@@ -12,11 +12,15 @@ import (
 	"syscall"
 	"time"
 
+	"yovision/sense/internal/auditrelay"
 	"yovision/sense/internal/auth"
 	"yovision/sense/internal/config"
+	"yovision/sense/internal/console"
 	"yovision/sense/internal/controlapi"
+	"yovision/sense/internal/metrics"
 	"yovision/sense/internal/mtx"
 	"yovision/sense/internal/onvif"
+	"yovision/sense/internal/orphan"
 	"yovision/sense/internal/probe"
 	"yovision/sense/internal/reconcile"
 	"yovision/sense/internal/store"
@@ -37,6 +41,14 @@ func run(logger *slog.Logger) error {
 	if err != nil {
 		return fmt.Errorf("load configuration: %w", err)
 	}
+	instanceID := cfg.InstanceID
+	if instanceID == "" {
+		instanceID, err = metrics.GenerateInstanceID()
+		if err != nil {
+			return err
+		}
+	}
+	registry := metrics.New(instanceID, version)
 	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
 	defer stop()
 
@@ -45,6 +57,28 @@ func run(logger *slog.Logger) error {
 		return err
 	}
 	defer repository.Close()
+	var auditWorker *auditrelay.Worker
+	if cfg.AuditRelayEnabled {
+		relayStore, ok := repository.(auditrelay.Repository)
+		if !ok {
+			return errors.New("selected repository does not support audit relay")
+		}
+		if err := relayStore.AuditRelayReady(ctx); err != nil {
+			return err
+		}
+		secret, err := auditrelay.LoadKey(cfg.AuditRelayKeyFile, cfg.AuditRelayKeyID)
+		if err != nil {
+			return err
+		}
+		client, err := auditrelay.NewClient(cfg.AuditRelayURL, cfg.AuditRelayKeyID, secret, nil)
+		if err != nil {
+			return err
+		}
+		auditWorker, err = auditrelay.NewWorker(relayStore, client, instanceID)
+		if err != nil {
+			return err
+		}
+	}
 	var controlHandler http.Handler
 	if cfg.ControlAPIEnabled {
 		controlStore, ok := repository.(store.ControlRepository)
@@ -76,22 +110,39 @@ func run(logger *slog.Logger) error {
 		})
 	}
 	discovery := onvif.NewRouter(cameraAdapter, credentials)
-	reconciler := reconcile.New(repository, discovery, mediaClient)
+	reconciler := reconcile.NewWithOptions(repository, discovery, mediaClient, reconcile.Options{
+		InstanceID: instanceID, LeaseDuration: cfg.ReconcileLeaseDuration,
+		OperationTimeout: cfg.ReconcileOperationTimeout, Metrics: registry,
+	})
 	checker := probe.New(repository, mediaClient)
+	var orphanScanner *orphan.Manager
+	if cfg.OrphanScanEnabled {
+		orphanStore, ok := repository.(store.OrphanRepository)
+		if !ok {
+			return errors.New("selected repository does not support orphan scanning")
+		}
+		orphanScanner = orphan.New(orphanStore, mediaClient, instanceID, registry)
+	}
 	report := func(err error) {
 		// Domain and MediaMTX errors intentionally omit stream URIs and credentials.
 		logger.Warn("background convergence error", "error", err)
 	}
 	var background sync.WaitGroup
-	background.Add(2)
+	startBackground := func(run func()) {
+		background.Add(1)
 		go func() {
 			defer background.Done()
-		reconciler.Run(ctx, cfg.ReconcileInterval, report)
-	}()
-	go func() {
-		defer background.Done()
-		checker.Run(ctx, cfg.ProbeInterval, report)
+			run()
 		}()
+	}
+	startBackground(func() { reconciler.Run(ctx, cfg.ReconcileInterval, report) })
+	startBackground(func() { checker.Run(ctx, cfg.ProbeInterval, report) })
+	if orphanScanner != nil {
+		startBackground(func() { orphanScanner.Run(ctx, cfg.OrphanScanInterval, report) })
+	}
+	if auditWorker != nil {
+		startBackground(func() { auditWorker.Run(ctx, cfg.AuditRelayInterval, report) })
+	}
 
 	mux := http.NewServeMux()
 	mux.HandleFunc("GET /healthz", func(writer http.ResponseWriter, _ *http.Request) {
@@ -104,9 +155,23 @@ func run(logger *slog.Logger) error {
 		writer.WriteHeader(http.StatusOK)
 		_, _ = writer.Write([]byte(`{"status":"ready"}`))
 	})
+	if cfg.MetricsEnabled {
+		mux.Handle("GET /metrics", registry.Handler())
+	}
 	if cfg.ControlAPIEnabled {
 		mux.Handle("/api/v1/", controlHandler)
 	}
+	if cfg.ConsoleEnabled {
+		consoleHandler, err := console.NewHandler(cfg.ConsoleWebRTCBaseURL)
+		if err != nil {
+			return err
+		}
+		mux.Handle("/sense-console/", consoleHandler)
+		mux.HandleFunc("GET /sense-console", func(writer http.ResponseWriter, request *http.Request) {
+			writer.Header().Set("Cache-Control", "no-store")
+			http.Redirect(writer, request, "/sense-console/", http.StatusTemporaryRedirect)
+		})
+	}
 
 	server := &http.Server{
 		Addr: cfg.HTTPAddress, Handler: mux,
@@ -118,7 +183,10 @@ func run(logger *slog.Logger) error {
 	serverErrors := make(chan error, 1)
 	go func() {
 		logger.Info("Sense listening", "address", cfg.HTTPAddress, "version", version,
-			"control_api_enabled", cfg.ControlAPIEnabled)
+			"instance_id", instanceID,
+			"control_api_enabled", cfg.ControlAPIEnabled,
+			"console_enabled", cfg.ConsoleEnabled,
+			"audit_relay_enabled", cfg.AuditRelayEnabled)
 		serverErrors <- server.ListenAndServe()
 	}()
 

Sense/cmd/sense-orphan/main.go

@@ -0,0 +1,94 @@
+// sense-orphan is a local, PostgreSQL-backed operational command. Report is
+// read-only; apply requires a fresh scan ID, actor and exact confirmation.
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"flag"
+	"fmt"
+	"net/http"
+	"os"
+	"os/signal"
+	"strings"
+	"syscall"
+
+	"yovision/sense/internal/config"
+	"yovision/sense/internal/metrics"
+	"yovision/sense/internal/mtx"
+	"yovision/sense/internal/orphan"
+	"yovision/sense/internal/store"
+)
+
+func main() {
+	if err := run(); err != nil {
+		_, _ = fmt.Fprintln(os.Stderr, "sense-orphan failed:", err)
+		os.Exit(1)
+	}
+}
+
+func run() error {
+	mode := flag.String("mode", "report", "report or apply")
+	scanID := flag.String("scan-id", "", "fresh scan ID required by apply")
+	actor := flag.String("actor", "", "operator identifier required by apply")
+	confirm := flag.String("confirm", "", "exact confirmation: DELETE <scan-id>")
+	flag.Parse()
+
+	cfg, err := config.Load()
+	if err != nil {
+		return err
+	}
+	if !strings.EqualFold(strings.TrimSpace(cfg.DatabaseDriver), store.DriverPostgres) {
+		return errors.New("sense-orphan requires SENSE_DB_DRIVER=postgres")
+	}
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+	repository, err := store.OpenPostgres(ctx, cfg.DatabaseDSN)
+	if err != nil {
+		return err
+	}
+	defer repository.Close()
+	media, err := mtx.NewClient(cfg.MediaMTXURL, &http.Client{Timeout: cfg.ReconcileOperationTimeout})
+	if err != nil {
+		return err
+	}
+	instanceID := cfg.InstanceID
+	if instanceID == "" {
+		instanceID, err = metrics.GenerateInstanceID()
+		if err != nil {
+			return err
+		}
+	}
+	manager := orphan.New(repository, media, instanceID, metrics.New(instanceID, "operator"))
+	encoder := json.NewEncoder(os.Stdout)
+	switch *mode {
+	case "report":
+		scan, err := manager.Report(ctx)
+		if err != nil {
+			return err
+		}
+		return encoder.Encode(struct {
+			ScanID        string `json:"scan_id"`
+			Observed      int    `json:"observed"`
+			OwnedStale    int    `json:"owned_stale"`
+			Unowned       int    `json:"unowned"`
+			SafetyAllowed bool   `json:"safety_allowed"`
+			SafetyReason  string `json:"safety_reason"`
+			ExpiresAt     string `json:"expires_at"`
+		}{
+			ScanID: scan.ID, Observed: scan.ObservedCount,
+			OwnedStale: scan.OwnedStaleCount, Unowned: scan.UnownedCount,
+			SafetyAllowed: scan.SafetyAllowed, SafetyReason: scan.SafetyReason,
+			ExpiresAt: scan.ExpiresAt.UTC().Format("2006-01-02T15:04:05Z07:00"),
+		})
+	case "apply":
+		result, err := manager.Apply(ctx, *scanID, *actor, *confirm)
+		if encodeErr := encoder.Encode(result); encodeErr != nil {
+			return encodeErr
+		}
+		return err
+	default:
+		return errors.New("mode must be report or apply")
+	}
+}

Sense/internal/auditrelay/auditrelay_test.go

@@ -0,0 +1,132 @@
+package auditrelay
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+func testEnvelope(id string) Envelope {
+	return Envelope{SchemaVersion: 1, Event: Event{
+		EventID: id, EventType: "device.created", TenantID: "tenant", SiteID: "site", DeviceID: "camera-1",
+		Actor: Actor{Type: "system", ID: "sense"}, AggregateGeneration: 1,
+		ProjectionVersions: ProjectionVersions{}, Data: json.RawMessage(`{"kind":"device_created"}`), OccurredAt: time.Unix(1, 0).UTC(),
+	}}
+}
+
+func TestClientSignsCanonicalRequest(t *testing.T) {
+	secret := bytesOf(32, 7)
+	server := httptest.NewServer(http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
+		body := make([]byte, request.ContentLength)
+		_, _ = request.Body.Read(body)
+		canonical := CanonicalString(request.Method, request.URL.Path, request.Header.Get(HeaderTimestamp), request.Header.Get(HeaderNonce), body)
+		if request.Header.Get(HeaderSignature) != Signature(secret, canonical) {
+			t.Error("request signature did not match canonical vector")
+		}
+		_ = json.NewEncoder(writer).Encode(BatchResponse{Results: []Result{{EventID: "audit_00000000000000000000000000000001", Status: "accepted"}}})
+	}))
+	defer server.Close()
+	client, err := NewClient(server.URL+RelayPath, "sense-a", secret, server.Client())
+	if err != nil {
+		t.Fatal(err)
+	}
+	client.now = func() time.Time { return time.Unix(1_800_000_000, 0) }
+	client.nonce = func() (string, error) { return "AAAAAAAAAAAAAAAAAAAAAA", nil }
+	results, err := client.Send(context.Background(), []Envelope{testEnvelope("audit_00000000000000000000000000000001")})
+	if err != nil || len(results) != 1 || results[0].Status != "accepted" {
+		t.Fatalf("unexpected relay result: %+v, %v", results, err)
+	}
+}
+
+func TestEndpointAndKeySecurity(t *testing.T) {
+	if _, err := ValidateEndpoint("http://example.com" + RelayPath); err == nil {
+		t.Fatal("remote plaintext relay URL was accepted")
+	}
+	if _, err := ValidateEndpoint("https://example.com" + RelayPath + "?secret=x"); err == nil {
+		t.Fatal("relay URL query was accepted")
+	}
+	secret := bytesOf(32, 9)
+	path := filepath.Join(t.TempDir(), "keys.json")
+	document := map[string]any{"version": 1, "keys": []any{map[string]any{"key_id": "sense-a", "secret_base64url": base64.RawURLEncoding.EncodeToString(secret)}}}
+	raw, _ := json.Marshal(document)
+	if err := os.WriteFile(path, raw, 0o600); err != nil {
+		t.Fatal(err)
+	}
+	loaded, err := LoadKey(path, "sense-a")
+	if err != nil || sha256.Sum256(loaded) != sha256.Sum256(secret) {
+		t.Fatalf("external key was not loaded: %v", err)
+	}
+}
+
+type fakeRepository struct {
+	queued    []QueuedEvent
+	completed []Completion
+}
+
+func (*fakeRepository) AuditRelayReady(context.Context) error { return nil }
+func (f *fakeRepository) ClaimAuditRelayBatch(context.Context, string, int, time.Duration) ([]QueuedEvent, error) {
+	return f.queued, nil
+}
+func (f *fakeRepository) CompleteAuditRelayBatch(_ context.Context, _ string, values []Completion) error {
+	f.completed = append([]Completion(nil), values...)
+	return nil
+}
+
+type fakeSender struct {
+	results []Result
+	err     error
+}
+
+func (f fakeSender) Send(context.Context, []Envelope) ([]Result, error) { return f.results, f.err }
+
+func TestWorkerDispositionAndBackoff(t *testing.T) {
+	first := "audit_00000000000000000000000000000001"
+	second := "audit_00000000000000000000000000000002"
+	repository := &fakeRepository{queued: []QueuedEvent{{Envelope: testEnvelope(first), LeaseToken: 1, AttemptCount: 1}, {Envelope: testEnvelope(second), LeaseToken: 2, AttemptCount: 10}}}
+	code := "schema_invalid"
+	worker, _ := NewWorker(repository, fakeSender{results: []Result{{EventID: first, Status: "accepted"}, {EventID: second, Status: "rejected", ErrorCode: &code}}}, "worker")
+	if err := worker.RelayOnce(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+	if repository.completed[0].Disposition != Delivered || repository.completed[1].Disposition != DeadLetter {
+		t.Fatalf("unexpected dispositions: %+v", repository.completed)
+	}
+
+	repository.completed = nil
+	worker.sender = fakeSender{err: errors.New("network")}
+	if err := worker.RelayOnce(context.Background()); err == nil {
+		t.Fatal("network failure was hidden")
+	}
+	if repository.completed[0].RetryAfter != time.Second || repository.completed[1].RetryAfter != 300*time.Second {
+		t.Fatalf("retry bounds drifted: %+v", repository.completed)
+	}
+}
+
+func TestWorkerRetriesWholeBatchForIncompleteResponse(t *testing.T) {
+	first := "audit_00000000000000000000000000000001"
+	second := "audit_00000000000000000000000000000002"
+	repository := &fakeRepository{queued: []QueuedEvent{{Envelope: testEnvelope(first), LeaseToken: 1, AttemptCount: 1}, {Envelope: testEnvelope(second), LeaseToken: 2, AttemptCount: 2}}}
+	worker, _ := NewWorker(repository, fakeSender{results: []Result{{EventID: first, Status: "accepted"}}}, "worker")
+	if err := worker.RelayOnce(context.Background()); err == nil {
+		t.Fatal("incomplete response was accepted")
+	}
+	if len(repository.completed) != 2 || repository.completed[0].Disposition != Retry || repository.completed[1].Disposition != Retry {
+		t.Fatalf("incomplete response partially completed the batch: %+v", repository.completed)
+	}
+}
+
+func bytesOf(size int, value byte) []byte {
+	result := make([]byte, size)
+	for index := range result {
+		result[index] = value
+	}
+	return result
+}

Sense/internal/auditrelay/client.go

@@ -0,0 +1,131 @@
+package auditrelay
+
+import (
+	"bytes"
+	"context"
+	"crypto/hmac"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const (
+	HeaderKeyID     = "X-YoVision-Key-Id"
+	HeaderTimestamp = "X-YoVision-Timestamp"
+	HeaderNonce     = "X-YoVision-Nonce"
+	HeaderSignature = "X-YoVision-Signature"
+	RelayPath       = "/internal/v1/audit-events:batch"
+)
+
+type Client struct {
+	endpoint   *url.URL
+	keyID      string
+	secret     []byte
+	httpClient *http.Client
+	now        func() time.Time
+	nonce      func() (string, error)
+}
+
+func NewClient(rawURL, keyID string, secret []byte, client *http.Client) (*Client, error) {
+	endpoint, err := ValidateEndpoint(rawURL)
+	if err != nil {
+		return nil, err
+	}
+	if keyID == "" || len(secret) < 32 {
+		return nil, errors.New("audit relay key ID and 32-byte secret are required")
+	}
+	if client == nil {
+		client = &http.Client{Timeout: 10 * time.Second}
+	}
+	return &Client{endpoint: endpoint, keyID: keyID, secret: append([]byte(nil), secret...), httpClient: client, now: time.Now, nonce: randomNonce}, nil
+}
+
+func ValidateEndpoint(rawURL string) (*url.URL, error) {
+	parsed, err := url.Parse(rawURL)
+	if err != nil || parsed.Host == "" || parsed.Path != RelayPath || parsed.RawQuery != "" || parsed.Fragment != "" || parsed.User != nil {
+		return nil, errors.New("invalid Bell audit relay URL")
+	}
+	host := parsed.Hostname()
+	ip := net.ParseIP(host)
+	loopback := strings.EqualFold(host, "localhost") || (ip != nil && ip.IsLoopback())
+	if parsed.Scheme != "https" && !(parsed.Scheme == "http" && loopback) {
+		return nil, errors.New("Bell audit relay URL requires HTTPS outside loopback")
+	}
+	return parsed, nil
+}
+
+func CanonicalString(method, path, timestamp, nonce string, body []byte) string {
+	digest := sha256.Sum256(body)
+	return strings.Join([]string{method, path, timestamp, nonce, hex.EncodeToString(digest[:])}, "\n")
+}
+
+func Signature(secret []byte, canonical string) string {
+	mac := hmac.New(sha256.New, secret)
+	_, _ = mac.Write([]byte(canonical))
+	return base64.RawURLEncoding.EncodeToString(mac.Sum(nil))
+}
+
+func randomNonce() (string, error) {
+	value := make([]byte, 16)
+	if _, err := rand.Read(value); err != nil {
+		return "", err
+	}
+	return base64.RawURLEncoding.EncodeToString(value), nil
+}
+
+func (c *Client) Send(ctx context.Context, events []Envelope) ([]Result, error) {
+	if len(events) < 1 || len(events) > MaxBatchSize {
+		return nil, errors.New("audit relay batch must contain 1 to 100 events")
+	}
+	body, err := json.Marshal(BatchRequest{Events: events})
+	if err != nil || len(body) > MaxBodyBytes {
+		return nil, errors.New("encode audit relay batch")
+	}
+	requestContext, cancel := context.WithTimeout(ctx, 10*time.Second)
+	defer cancel()
+	timestamp := strconv.FormatInt(c.now().UTC().Unix(), 10)
+	nonce, err := c.nonce()
+	if err != nil {
+		return nil, errors.New("generate audit relay nonce")
+	}
+	request, err := http.NewRequestWithContext(requestContext, http.MethodPost, c.endpoint.String(), bytes.NewReader(body))
+	if err != nil {
+		return nil, errors.New("create audit relay request")
+	}
+	request.Header.Set("Content-Type", "application/json")
+	request.Header.Set(HeaderKeyID, c.keyID)
+	request.Header.Set(HeaderTimestamp, timestamp)
+	request.Header.Set(HeaderNonce, nonce)
+	request.Header.Set(HeaderSignature, Signature(c.secret, CanonicalString(http.MethodPost, RelayPath, timestamp, nonce, body)))
+	response, err := c.httpClient.Do(request)
+	if err != nil {
+		return nil, errors.New("send audit relay request")
+	}
+	defer response.Body.Close()
+	if response.StatusCode != http.StatusOK {
+		_, _ = io.Copy(io.Discard, io.LimitReader(response.Body, 4096))
+		return nil, fmt.Errorf("Bell audit relay returned HTTP %d", response.StatusCode)
+	}
+	decoder := json.NewDecoder(io.LimitReader(response.Body, MaxBodyBytes+1))
+	decoder.DisallowUnknownFields()
+	var decoded BatchResponse
+	if err := decoder.Decode(&decoded); err != nil {
+		return nil, errors.New("decode audit relay response")
+	}
+	var trailing any
+	if err := decoder.Decode(&trailing); !errors.Is(err, io.EOF) {
+		return nil, errors.New("audit relay response contains trailing data")
+	}
+	return decoded.Results, nil
+}

Sense/internal/auditrelay/key.go

@@ -0,0 +1,53 @@
+package auditrelay
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"io"
+	"os"
+	"regexp"
+)
+
+var keyIDPattern = regexp.MustCompile(`^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$`)
+
+type keyFile struct {
+	Version int `json:"version"`
+	Keys    []struct {
+		KeyID  string `json:"key_id"`
+		Secret string `json:"secret_base64url"`
+	} `json:"keys"`
+}
+
+func LoadKey(path, keyID string) ([]byte, error) {
+	raw, err := os.ReadFile(path)
+	if err != nil {
+		return nil, errors.New("read audit relay key file")
+	}
+	var document keyFile
+	decoder := json.NewDecoder(bytes.NewReader(raw))
+	decoder.DisallowUnknownFields()
+	if err := decoder.Decode(&document); err != nil || document.Version != 1 || len(document.Keys) == 0 {
+		return nil, errors.New("invalid audit relay key file")
+	}
+	var trailing any
+	if err := decoder.Decode(&trailing); !errors.Is(err, io.EOF) {
+		return nil, errors.New("invalid audit relay key file")
+	}
+	values := make(map[string][]byte, len(document.Keys))
+	for _, candidate := range document.Keys {
+		secret, err := base64.RawURLEncoding.DecodeString(candidate.Secret)
+		if err != nil || !keyIDPattern.MatchString(candidate.KeyID) || len(secret) < 32 {
+			return nil, errors.New("invalid audit relay secret")
+		}
+		if _, duplicate := values[candidate.KeyID]; duplicate {
+			return nil, errors.New("duplicate audit relay key ID")
+		}
+		values[candidate.KeyID] = secret
+	}
+	if secret, exists := values[keyID]; exists {
+		return secret, nil
+	}
+	return nil, errors.New("audit relay key ID not found")
+}

Sense/internal/auditrelay/model.go

@@ -0,0 +1,89 @@
+// Package auditrelay delivers Sense-owned audit facts to Bell without sharing databases.
+package auditrelay
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"time"
+)
+
+const (
+	MaxBatchSize  = 100
+	MaxBodyBytes  = 1 << 20
+	LeaseDuration = 30 * time.Second
+)
+
+type Actor struct {
+	Type string `json:"type"`
+	ID   string `json:"id"`
+}
+
+type ProjectionVersions struct {
+	QuotaSourceVersion      *int64 `json:"quota_source_version"`
+	AreaPolicySourceVersion *int64 `json:"area_policy_source_version"`
+}
+
+type Event struct {
+	EventID             string             `json:"event_id"`
+	EventType           string             `json:"event_type"`
+	TenantID            string             `json:"tenant_id"`
+	SiteID              string             `json:"site_id"`
+	DeviceID            string             `json:"device_id"`
+	Actor               Actor              `json:"actor"`
+	Reason              *string            `json:"reason"`
+	TraceID             *string            `json:"trace_id"`
+	AggregateGeneration int64              `json:"aggregate_generation"`
+	ProjectionVersions  ProjectionVersions `json:"projection_versions"`
+	Data                json.RawMessage    `json:"data"`
+	OccurredAt          time.Time          `json:"occurred_at"`
+}
+
+type Envelope struct {
+	SchemaVersion int   `json:"schema_version"`
+	Event         Event `json:"event"`
+}
+
+type BatchRequest struct {
+	Events []Envelope `json:"events"`
+}
+
+type Result struct {
+	EventID   string  `json:"event_id"`
+	Status    string  `json:"status"`
+	ErrorCode *string `json:"error_code,omitempty"`
+}
+
+type BatchResponse struct {
+	Results []Result `json:"results"`
+}
+
+type QueuedEvent struct {
+	Envelope
+	LeaseToken   int64
+	AttemptCount int
+}
+
+type Disposition string
+
+const (
+	Delivered  Disposition = "delivered"
+	DeadLetter Disposition = "dead_letter"
+	Retry      Disposition = "retry"
+)
+
+type Completion struct {
+	EventID     string
+	LeaseToken  int64
+	Disposition Disposition
+	ErrorCode   string
+	RetryAfter  time.Duration
+}
+
+var ErrLeaseLost = errors.New("audit relay lease lost")
+
+type Repository interface {
+	AuditRelayReady(context.Context) error
+	ClaimAuditRelayBatch(context.Context, string, int, time.Duration) ([]QueuedEvent, error)
+	CompleteAuditRelayBatch(context.Context, string, []Completion) error
+}

Sense/internal/auditrelay/worker.go

@@ -0,0 +1,126 @@
+package auditrelay
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"regexp"
+	"time"
+)
+
+var stableErrorCode = regexp.MustCompile(`^[a-z][a-z0-9_]{0,63}$`)
+
+type Sender interface {
+	Send(context.Context, []Envelope) ([]Result, error)
+}
+
+type Worker struct {
+	repository Repository
+	sender     Sender
+	owner      string
+}
+
+func NewWorker(repository Repository, sender Sender, owner string) (*Worker, error) {
+	if repository == nil || sender == nil || owner == "" {
+		return nil, errors.New("audit relay worker dependencies are required")
+	}
+	return &Worker{repository: repository, sender: sender, owner: owner}, nil
+}
+
+func RetryDelay(attempt int) time.Duration {
+	if attempt < 1 {
+		attempt = 1
+	}
+	if attempt > 9 {
+		return 300 * time.Second
+	}
+	delay := time.Second << (attempt - 1)
+	if delay > 300*time.Second {
+		return 300 * time.Second
+	}
+	return delay
+}
+
+func (w *Worker) RelayOnce(ctx context.Context) error {
+	queued, err := w.repository.ClaimAuditRelayBatch(ctx, w.owner, MaxBatchSize, LeaseDuration)
+	if err != nil || len(queued) == 0 {
+		return err
+	}
+	events := make([]Envelope, len(queued))
+	for index := range queued {
+		events[index] = queued[index].Envelope
+	}
+	results, sendErr := w.sender.Send(ctx, events)
+	if sendErr != nil {
+		completions := make([]Completion, len(queued))
+		for index, value := range queued {
+			completions[index] = Completion{EventID: value.Event.EventID, LeaseToken: value.LeaseToken, Disposition: Retry, ErrorCode: "delivery_failed", RetryAfter: RetryDelay(value.AttemptCount)}
+		}
+		if err := w.repository.CompleteAuditRelayBatch(ctx, w.owner, completions); err != nil {
+			return err
+		}
+		return sendErr
+	}
+	if len(results) != len(queued) {
+		return w.retryAll(ctx, queued, "invalid_response")
+	}
+	expected := make(map[string]bool, len(queued))
+	for _, value := range queued {
+		expected[value.Event.EventID] = true
+	}
+	byID := make(map[string]Result, len(results))
+	for _, result := range results {
+		validStatus := ((result.Status == "accepted" || result.Status == "duplicate") && result.ErrorCode == nil) ||
+			(result.Status == "rejected" && result.ErrorCode != nil && stableErrorCode.MatchString(*result.ErrorCode))
+		if !expected[result.EventID] || !validStatus {
+			return w.retryAll(ctx, queued, "invalid_response")
+		}
+		if _, duplicate := byID[result.EventID]; duplicate {
+			return w.retryAll(ctx, queued, "invalid_response")
+		}
+		byID[result.EventID] = result
+	}
+	completions := make([]Completion, 0, len(queued))
+	for _, value := range queued {
+		result, ok := byID[value.Event.EventID]
+		if !ok {
+			return w.retryAll(ctx, queued, "invalid_response")
+		}
+		switch result.Status {
+		case "accepted", "duplicate":
+			completions = append(completions, Completion{EventID: value.Event.EventID, LeaseToken: value.LeaseToken, Disposition: Delivered})
+		case "rejected":
+			completions = append(completions, Completion{EventID: value.Event.EventID, LeaseToken: value.LeaseToken, Disposition: DeadLetter, ErrorCode: *result.ErrorCode})
+		}
+	}
+	return w.repository.CompleteAuditRelayBatch(ctx, w.owner, completions)
+}
+
+func (w *Worker) retryAll(ctx context.Context, queued []QueuedEvent, code string) error {
+	values := make([]Completion, len(queued))
+	for index, value := range queued {
+		values[index] = Completion{EventID: value.Event.EventID, LeaseToken: value.LeaseToken, Disposition: Retry, ErrorCode: code, RetryAfter: RetryDelay(value.AttemptCount)}
+	}
+	if err := w.repository.CompleteAuditRelayBatch(ctx, w.owner, values); err != nil {
+		return err
+	}
+	return fmt.Errorf("audit relay %s", code)
+}
+
+func (w *Worker) Run(ctx context.Context, interval time.Duration, report func(error)) {
+	if interval <= 0 {
+		interval = time.Second
+	}
+	for {
+		if err := w.RelayOnce(ctx); err != nil && ctx.Err() == nil && report != nil {
+			report(err)
+		}
+		timer := time.NewTimer(interval)
+		select {
+		case <-ctx.Done():
+			timer.Stop()
+			return
+		case <-timer.C:
+		}
+	}
+}

Sense/internal/config/config.go

@@ -7,6 +7,7 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
+	"regexp"
 	"strconv"
 	"strings"
 	"time"
@@ -15,14 +16,22 @@ import (
 const (
 	defaultHTTPAddress      = "127.0.0.1:8080"
 	defaultDatabaseDriver   = "sqlite"
+	postgresDatabaseDriver  = "postgres"
 	defaultDatabaseDSN      = "file:data/sense.db"
 	defaultMediaMTXURL      = "http://127.0.0.1:9997"
 	defaultReconcilePeriod  = 5 * time.Second
+	defaultReconcileLease   = 30 * time.Second
+	defaultOperationTimeout = 20 * time.Second
 	defaultProbePeriod      = 10 * time.Second
+	defaultOrphanScanPeriod = time.Minute
 	defaultONVIFMode        = "disabled"
 	defaultControlAuthMode  = "static-sha256"
+	defaultAuditRelayPeriod = time.Second
+	defaultConsoleWebRTCURL = "http://127.0.0.1:8889"
 )
 
+var instanceIDPattern = regexp.MustCompile(`^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$`)
+
 type Config struct {
 	HTTPAddress               string
 	AllowNonLoopback          bool
@@ -30,7 +39,13 @@ type Config struct {
 	DatabaseDSN               string
 	MediaMTXURL               string
 	ReconcileInterval         time.Duration
+	ReconcileLeaseDuration    time.Duration
+	ReconcileOperationTimeout time.Duration
 	ProbeInterval             time.Duration
+	InstanceID                string
+	MetricsEnabled            bool
+	OrphanScanEnabled         bool
+	OrphanScanInterval        time.Duration
 	ONVIFMode                 string
 	RTSPRewriteHost           string
 	RTSPRewritePort           int
@@ -40,6 +55,13 @@ type Config struct {
 	ControlAuthFile           string
 	ControlCursorKeyFile      string
 	ControlAllowInsecureHTTP  bool
+	ConsoleEnabled            bool
+	ConsoleWebRTCBaseURL      string
+	AuditRelayEnabled         bool
+	AuditRelayURL             string
+	AuditRelayKeyFile         string
+	AuditRelayKeyID           string
+	AuditRelayInterval        time.Duration
 }
 
 func Load() (Config, error) {
@@ -51,6 +73,14 @@ func Load() (Config, error) {
 	if err != nil {
 		return Config{}, err
 	}
+	reconcileLease, err := durationEnv("SENSE_RECONCILE_LEASE_DURATION", defaultReconcileLease)
+	if err != nil {
+		return Config{}, err
+	}
+	operationTimeout, err := durationEnv("SENSE_RECONCILE_OPERATION_TIMEOUT", defaultOperationTimeout)
+	if err != nil {
+		return Config{}, err
+	}
 	probePeriod, err := durationEnv("SENSE_PROBE_INTERVAL", defaultProbePeriod)
 	if err != nil {
 		return Config{}, err
@@ -71,15 +101,47 @@ func Load() (Config, error) {
 	if err != nil {
 		return Config{}, err
 	}
+	consoleEnabled, err := boolEnv("SENSE_CONSOLE_ENABLED", false)
+	if err != nil {
+		return Config{}, err
+	}
+	auditRelayEnabled, err := boolEnv("SENSE_AUDIT_RELAY_ENABLED", false)
+	if err != nil {
+		return Config{}, err
+	}
+	auditRelayInterval, err := durationEnv("SENSE_AUDIT_RELAY_INTERVAL", defaultAuditRelayPeriod)
+	if err != nil {
+		return Config{}, err
+	}
+	metricsEnabled, err := boolEnv("SENSE_METRICS_ENABLED", true)
+	if err != nil {
+		return Config{}, err
+	}
+	databaseDriver := stringEnv("SENSE_DB_DRIVER", defaultDatabaseDriver)
+	orphanDefault := strings.EqualFold(strings.TrimSpace(databaseDriver), postgresDatabaseDriver)
+	orphanEnabled, err := boolEnv("SENSE_ORPHAN_SCAN_ENABLED", orphanDefault)
+	if err != nil {
+		return Config{}, err
+	}
+	orphanPeriod, err := durationEnv("SENSE_ORPHAN_SCAN_INTERVAL", defaultOrphanScanPeriod)
+	if err != nil {
+		return Config{}, err
+	}
 
 	cfg := Config{
 		HTTPAddress:               stringEnv("SENSE_HTTP_ADDR", defaultHTTPAddress),
 		AllowNonLoopback:          allow,
-		DatabaseDriver:           stringEnv("SENSE_DB_DRIVER", defaultDatabaseDriver),
+		DatabaseDriver:            databaseDriver,
 		DatabaseDSN:               stringEnv("SENSE_DB_DSN", defaultDatabaseDSN),
 		MediaMTXURL:               stringEnv("SENSE_MEDIAMTX_URL", defaultMediaMTXURL),
 		ReconcileInterval:         reconcilePeriod,
+		ReconcileLeaseDuration:    reconcileLease,
+		ReconcileOperationTimeout: operationTimeout,
 		ProbeInterval:             probePeriod,
+		InstanceID:                stringEnv("SENSE_INSTANCE_ID", ""),
+		MetricsEnabled:            metricsEnabled,
+		OrphanScanEnabled:         orphanEnabled,
+		OrphanScanInterval:        orphanPeriod,
 		ONVIFMode:                 stringEnv("SENSE_ONVIF_MODE", defaultONVIFMode),
 		RTSPRewriteHost:           stringEnv("SENSE_ONVIF_RTSP_REWRITE_HOST", ""),
 		RTSPRewritePort:           rewritePort,
@@ -89,6 +151,13 @@ func Load() (Config, error) {
 		ControlAuthFile:           stringEnv("SENSE_CONTROL_AUTH_FILE", ""),
 		ControlCursorKeyFile:      stringEnv("SENSE_CONTROL_CURSOR_KEY_FILE", ""),
 		ControlAllowInsecureHTTP:  controlAllowInsecure,
+		ConsoleEnabled:            consoleEnabled,
+		ConsoleWebRTCBaseURL:      stringEnv("SENSE_CONSOLE_WEBRTC_BASE_URL", defaultConsoleWebRTCURL),
+		AuditRelayEnabled:         auditRelayEnabled,
+		AuditRelayURL:             stringEnv("SENSE_AUDIT_RELAY_URL", ""),
+		AuditRelayKeyFile:         stringEnv("SENSE_AUDIT_RELAY_KEY_FILE", ""),
+		AuditRelayKeyID:           stringEnv("SENSE_AUDIT_RELAY_KEY_ID", ""),
+		AuditRelayInterval:        auditRelayInterval,
 	}
 	if err := cfg.Validate(); err != nil {
 		return Config{}, err
@@ -129,6 +198,35 @@ func (c Config) Validate() error {
 	if c.ReconcileInterval <= 0 || c.ProbeInterval <= 0 {
 		return fmt.Errorf("loop intervals must be positive")
 	}
+	leaseDuration := c.ReconcileLeaseDuration
+	if leaseDuration == 0 {
+		leaseDuration = defaultReconcileLease
+	}
+	operationTimeout := c.ReconcileOperationTimeout
+	if operationTimeout == 0 {
+		operationTimeout = defaultOperationTimeout
+	}
+	if leaseDuration <= 0 || leaseDuration > 5*time.Minute {
+		return fmt.Errorf("SENSE_RECONCILE_LEASE_DURATION must be positive and at most 5m")
+	}
+	if operationTimeout <= 0 || operationTimeout >= leaseDuration {
+		return fmt.Errorf("SENSE_RECONCILE_OPERATION_TIMEOUT must be positive and shorter than the lease")
+	}
+	if c.InstanceID != "" && !instanceIDPattern.MatchString(c.InstanceID) {
+		return fmt.Errorf("invalid SENSE_INSTANCE_ID")
+	}
+	if c.OrphanScanEnabled {
+		if databaseDriver != postgresDatabaseDriver {
+			return fmt.Errorf("orphan scanning requires SENSE_DB_DRIVER=postgres")
+		}
+		orphanInterval := c.OrphanScanInterval
+		if orphanInterval == 0 {
+			orphanInterval = defaultOrphanScanPeriod
+		}
+		if orphanInterval < 10*time.Second {
+			return fmt.Errorf("SENSE_ORPHAN_SCAN_INTERVAL must be at least 10s")
+		}
+	}
 	if c.ONVIFMode != "" && c.ONVIFMode != "disabled" && c.ONVIFMode != "standard" {
 		return fmt.Errorf("SENSE_ONVIF_MODE must be disabled or standard")
 	}
@@ -158,6 +256,51 @@ func (c Config) Validate() error {
 			return fmt.Errorf("non-loopback Control API requires SENSE_CONTROL_ALLOW_INSECURE_HTTP=true")
 		}
 	}
+	if c.ConsoleEnabled {
+		if !c.ControlAPIEnabled {
+			return fmt.Errorf("Sense console requires SENSE_CONTROL_API_ENABLED=true")
+		}
+		if !isLoopback {
+			return fmt.Errorf("Sense console requires an explicit loopback SENSE_HTTP_ADDR")
+		}
+		previewURL, err := url.Parse(c.ConsoleWebRTCBaseURL)
+		if err != nil || previewURL.Host == "" ||
+			(previewURL.Scheme != "http" && previewURL.Scheme != "https") ||
+			previewURL.User != nil || previewURL.RawQuery != "" || previewURL.Fragment != "" ||
+			(previewURL.Path != "" && previewURL.Path != "/") {
+			return fmt.Errorf("invalid SENSE_CONSOLE_WEBRTC_BASE_URL")
+		}
+		previewHost := previewURL.Hostname()
+		previewIP := net.ParseIP(previewHost)
+		if previewHost != "localhost" && (previewIP == nil || !previewIP.IsLoopback()) {
+			return fmt.Errorf("SENSE_CONSOLE_WEBRTC_BASE_URL must use an explicit loopback host")
+		}
+	}
+	if c.AuditRelayEnabled {
+		if databaseDriver != postgresDatabaseDriver {
+			return fmt.Errorf("Sense audit relay requires SENSE_DB_DRIVER=postgres")
+		}
+		if c.AuditRelayKeyFile == "" || !filepath.IsAbs(c.AuditRelayKeyFile) {
+			return fmt.Errorf("SENSE_AUDIT_RELAY_KEY_FILE must be an absolute external path")
+		}
+		if !instanceIDPattern.MatchString(c.AuditRelayKeyID) {
+			return fmt.Errorf("invalid SENSE_AUDIT_RELAY_KEY_ID")
+		}
+		if c.AuditRelayInterval < time.Second {
+			return fmt.Errorf("SENSE_AUDIT_RELAY_INTERVAL must be at least 1s")
+		}
+		relayURL, err := url.Parse(c.AuditRelayURL)
+		if err != nil || relayURL.Host == "" || relayURL.Path != "/internal/v1/audit-events:batch" ||
+			relayURL.RawQuery != "" || relayURL.Fragment != "" || relayURL.User != nil {
+			return fmt.Errorf("invalid SENSE_AUDIT_RELAY_URL")
+		}
+		relayHost := relayURL.Hostname()
+		relayIP := net.ParseIP(relayHost)
+		relayLoopback := relayHost == "localhost" || (relayIP != nil && relayIP.IsLoopback())
+		if relayURL.Scheme != "https" && !(relayURL.Scheme == "http" && relayLoopback) {
+			return fmt.Errorf("SENSE_AUDIT_RELAY_URL requires HTTPS outside loopback")
+		}
+	}
 	return nil
 }
 

Sense/internal/config/config_test.go

@@ -3,6 +3,7 @@ package config
 import (
 	"path/filepath"
 	"testing"
+	"time"
 )
 
 func TestValidateRejectsNonLoopbackByDefault(t *testing.T) {
@@ -23,6 +24,35 @@ func TestValidateRejectsNonLoopbackByDefault(t *testing.T) {
 	}
 }
 
+func TestValidateReconcileLeaseAndOrphanProductionBoundary(t *testing.T) {
+	base := Config{
+		HTTPAddress: "127.0.0.1:8080", DatabaseDriver: "postgres",
+		DatabaseDSN: "postgres://sense-runtime@127.0.0.1/yovision?sslmode=disable",
+		MediaMTXURL: "http://127.0.0.1:9997", ReconcileInterval: time.Second,
+		ProbeInterval: time.Second, ReconcileLeaseDuration: 30 * time.Second,
+		ReconcileOperationTimeout: 20 * time.Second, OrphanScanEnabled: true,
+		OrphanScanInterval: time.Minute, InstanceID: "ins_edge-01",
+	}
+	if err := base.Validate(); err != nil {
+		t.Fatalf("valid multi-instance configuration failed: %v", err)
+	}
+	invalidTimeout := base
+	invalidTimeout.ReconcileOperationTimeout = invalidTimeout.ReconcileLeaseDuration
+	if err := invalidTimeout.Validate(); err == nil {
+		t.Fatal("operation timeout equal to the lease was accepted")
+	}
+	invalidInstance := base
+	invalidInstance.InstanceID = "tenant/site"
+	if err := invalidInstance.Validate(); err == nil {
+		t.Fatal("unbounded instance label was accepted")
+	}
+	sqlite := base
+	sqlite.DatabaseDriver, sqlite.DatabaseDSN = "sqlite", "file:test.db"
+	if err := sqlite.Validate(); err == nil {
+		t.Fatal("orphan scanner was accepted on SQLite")
+	}
+}
+
 func TestValidateRejectsCredentialsInMediaMTXURL(t *testing.T) {
 	t.Parallel()
 	cfg := Config{
@@ -136,3 +166,67 @@ func TestValidateControlAPINonLoopbackNeedsSeparateRiskAcceptance(t *testing.T)
 		t.Fatalf("explicit non-loopback Control API risk acceptance failed: %v", err)
 	}
 }
+
+func TestValidateSenseConsoleSecurityBoundary(t *testing.T) {
+	base := Config{
+		HTTPAddress: "127.0.0.1:8080", DatabaseDriver: "postgres",
+		DatabaseDSN: "postgres://sense-runtime@127.0.0.1/yovision?sslmode=disable",
+		MediaMTXURL: "http://127.0.0.1:9997", ReconcileInterval: time.Second, ProbeInterval: time.Second,
+		ControlAPIEnabled: true, ControlAuthMode: "static-sha256",
+		ControlAuthFile:      filepath.Join(t.TempDir(), "sense-auth.json"),
+		ControlCursorKeyFile: filepath.Join(t.TempDir(), "sense-cursor.key"),
+		ConsoleEnabled:       true, ConsoleWebRTCBaseURL: "http://127.0.0.1:8889",
+	}
+	if err := base.Validate(); err != nil {
+		t.Fatalf("valid loopback console rejected: %v", err)
+	}
+	withoutControl := base
+	withoutControl.ControlAPIEnabled = false
+	if err := withoutControl.Validate(); err == nil {
+		t.Fatal("console without Control API was accepted")
+	}
+	remoteBind := base
+	remoteBind.HTTPAddress, remoteBind.AllowNonLoopback = "0.0.0.0:8080", true
+	remoteBind.ControlAllowInsecureHTTP = true
+	if err := remoteBind.Validate(); err == nil {
+		t.Fatal("console on non-loopback Sense listener was accepted")
+	}
+	for _, invalidURL := range []string{
+		"http://media.example:8889", "ftp://127.0.0.1:8889", "http://127.0.0.1:8889/path",
+		"http://127.0.0.1:8889?token=hidden", "http://user@127.0.0.1:8889",
+	} {
+		candidate := base
+		candidate.ConsoleWebRTCBaseURL = invalidURL
+		if err := candidate.Validate(); err == nil {
+			t.Fatalf("invalid console WebRTC URL was accepted: %s", invalidURL)
+		}
+	}
+}
+
+func TestValidateAuditRelaySecurityBoundary(t *testing.T) {
+	base := Config{
+		HTTPAddress: "127.0.0.1:8080", DatabaseDriver: "postgres",
+		DatabaseDSN: "postgres://sense-runtime@127.0.0.1/yovision?sslmode=disable",
+		MediaMTXURL: "http://127.0.0.1:9997", ReconcileInterval: time.Second, ProbeInterval: time.Second,
+		AuditRelayEnabled: true, AuditRelayURL: "http://127.0.0.1:8081/internal/v1/audit-events:batch",
+		AuditRelayKeyFile: filepath.Join(t.TempDir(), "relay-keys.json"), AuditRelayKeyID: "sense-a", AuditRelayInterval: time.Second,
+	}
+	if err := base.Validate(); err != nil {
+		t.Fatalf("valid loopback relay rejected: %v", err)
+	}
+	remoteHTTP := base
+	remoteHTTP.AuditRelayURL = "http://bell.example/internal/v1/audit-events:batch"
+	if err := remoteHTTP.Validate(); err == nil {
+		t.Fatal("remote plaintext relay was accepted")
+	}
+	sqlite := base
+	sqlite.DatabaseDriver, sqlite.DatabaseDSN = "sqlite", "file:test.db"
+	if err := sqlite.Validate(); err == nil {
+		t.Fatal("SQLite audit relay was accepted")
+	}
+	relativeKey := base
+	relativeKey.AuditRelayKeyFile = "relay-keys.json"
+	if err := relativeKey.Validate(); err == nil {
+		t.Fatal("repository-relative relay key was accepted")
+	}
+}

Sense/internal/console/assets/app.css

@@ -0,0 +1,227 @@
+:root {
+  color-scheme: dark;
+  --bg: #06111f;
+  --sidebar: #071522;
+  --surface: #0d2033;
+  --surface-2: #112a40;
+  --surface-3: #16344d;
+  --border: #294762;
+  --text: #f5f9fc;
+  --muted: #a8bbcb;
+  --accent: #55dcc7;
+  --accent-strong: #2bbca9;
+  --accent-ink: #03231f;
+  --info: #6fc6ff;
+  --success: #71e19c;
+  --warning: #ffd16a;
+  --danger: #ff8a95;
+  --focus: #8bdcff;
+  --shadow: 0 18px 48px rgba(0, 0, 0, .26);
+  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
+  line-height: 1.5;
+}
+
+* { box-sizing: border-box; }
+html { background: var(--bg); }
+body { margin: 0; min-width: 320px; min-height: 100dvh; background: radial-gradient(circle at 75% -10%, #103150 0, transparent 32rem), var(--bg); color: var(--text); }
+button, input, select { font: inherit; }
+button, a, input, select { touch-action: manipulation; }
+button, a { -webkit-tap-highlight-color: transparent; }
+button { color: inherit; }
+a { color: var(--info); }
+[hidden] { display: none !important; }
+:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
+
+.skip-link { position: fixed; left: 12px; top: -80px; z-index: 1000; padding: 10px 14px; border-radius: 8px; background: var(--text); color: var(--bg); font-weight: 700; }
+.skip-link:focus { top: 8px; }
+.engineering-banner { min-height: 30px; display: grid; place-items: center; padding: 4px 16px; background: #f5c95b; color: #1e1705; font-size: 12px; font-weight: 800; letter-spacing: .04em; text-align: center; }
+.shell { display: grid; grid-template-columns: 240px minmax(0, 1fr); min-height: calc(100dvh - 30px); }
+
+.sidebar { position: sticky; top: 0; height: calc(100dvh - 30px); display: flex; flex-direction: column; padding: 28px 14px 18px; border-right: 1px solid var(--border); background: color-mix(in srgb, var(--sidebar) 95%, transparent); }
+.brand { display: flex; align-items: center; gap: 12px; padding: 8px 8px 28px; }
+.brand strong, .brand small { display: block; }
+.brand strong { font-size: 17px; }
+.brand small { color: var(--muted); font-size: 12px; }
+.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; background: linear-gradient(135deg, var(--accent), #58a9ff); color: #06222a; font-weight: 900; box-shadow: 0 9px 24px rgba(85, 220, 199, .2); }
+.primary-nav { display: grid; gap: 6px; }
+.primary-nav button, .mobile-nav button { border: 0; cursor: pointer; }
+.primary-nav button { min-height: 48px; display: grid; grid-template-columns: 24px 1fr auto; align-items: center; gap: 8px; padding: 0 12px; border-radius: 12px; background: transparent; color: var(--muted); text-align: left; transition: background-color .18s ease, color .18s ease; }
+.primary-nav button:hover { background: var(--surface); color: var(--text); }
+.primary-nav button[aria-current="page"] { background: #123d3a; color: var(--text); box-shadow: inset 3px 0 var(--accent); }
+.nav-count { min-width: 24px; padding: 2px 7px; border-radius: 999px; background: var(--surface-3); color: #d6e5ef; font-size: 11px; text-align: center; font-variant-numeric: tabular-nums; }
+.sidebar-foot { margin-top: auto; display: flex; align-items: center; gap: 9px; padding: 13px; border: 1px solid var(--border); border-radius: 12px; color: var(--muted); font-size: 12px; }
+.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #73879a; box-shadow: 0 0 0 4px rgba(115, 135, 154, .13); }
+.sidebar-foot.connected .status-dot { background: var(--success); box-shadow: 0 0 0 4px rgba(113, 225, 156, .13); }
+
+.workspace { min-width: 0; }
+.topbar { min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 16px 28px; border-bottom: 1px solid var(--border); background: rgba(8, 24, 39, .78); backdrop-filter: blur(18px); }
+.topbar strong, .topbar .eyebrow { display: block; }
+.topbar strong { margin-top: 2px; }
+.topbar-actions, .heading-actions { display: flex; align-items: center; gap: 10px; }
+.eyebrow { color: var(--info); font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
+.connection-pill { display: inline-flex; align-items: center; gap: 8px; min-height: 38px; padding: 0 12px; border: 1px solid var(--border); border-radius: 999px; color: var(--muted); font-size: 13px; }
+.connection-pill > .connection-dot { width: 7px; height: 7px; border-radius: 50%; background: #718497; }
+.connection-pill.connected { color: var(--success); border-color: rgba(113, 225, 156, .35); background: rgba(113, 225, 156, .08); }
+.connection-pill.connected > .connection-dot { background: var(--success); }
+
+.degraded-banner { display: flex; align-items: center; gap: 12px; padding: 12px 28px; border-bottom: 1px solid rgba(255, 138, 149, .38); background: rgba(96, 26, 39, .82); color: #ffe7ea; }
+.degraded-banner span { flex: 1; color: #ffc4ca; }
+main { padding: 32px clamp(18px, 3vw, 42px) 80px; }
+.view { max-width: 1440px; margin: 0 auto; }
+.page-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 22px; margin-bottom: 24px; }
+h1, h2, p { margin-top: 0; }
+h1 { margin-bottom: 4px; font-size: clamp(26px, 3vw, 36px); line-height: 1.2; letter-spacing: -.025em; }
+h2 { margin-bottom: 4px; font-size: 17px; }
+.page-heading p, .panel-heading p { margin-bottom: 0; color: var(--muted); }
+
+.button { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 0 14px; border: 1px solid transparent; border-radius: 10px; cursor: pointer; text-decoration: none; font-weight: 700; font-size: 13px; transition: background-color .18s ease, border-color .18s ease, opacity .18s ease; }
+.button.primary { background: var(--accent); color: var(--accent-ink); }
+.button.primary:hover { background: #7ae7d5; }
+.button.secondary { border-color: var(--border); background: var(--surface); color: var(--text); }
+.button.secondary:hover, .button.ghost:hover { border-color: #48708f; background: var(--surface-2); }
+.button.ghost { border-color: transparent; background: transparent; color: var(--info); }
+.button:disabled { cursor: not-allowed; opacity: .42; }
+
+.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 18px; }
+.metric-card, .panel { border: 1px solid var(--border); border-radius: 15px; background: linear-gradient(145deg, rgba(17, 42, 64, .82), rgba(10, 29, 47, .9)); box-shadow: var(--shadow); }
+.metric-card { min-height: 140px; display: flex; flex-direction: column; justify-content: center; padding: 20px; }
+.metric-card > span { color: var(--muted); font-size: 13px; }
+.metric-card strong { margin: 7px 0 2px; font-size: 30px; font-variant-numeric: tabular-nums; }
+.metric-card small { color: var(--muted); }
+.metric-card.warning strong { color: var(--warning); }
+.content-grid, .operations-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(300px, .8fr); gap: 18px; }
+.panel { padding: 18px; }
+.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
+.health-list { display: grid; gap: 8px; }
+.health-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 12px; padding: 12px 13px; border: 1px solid rgba(74, 111, 140, .56); border-radius: 11px; background: rgba(4, 17, 29, .35); }
+.health-item strong, .health-item small { display: block; }
+.health-item small { margin-top: 2px; color: var(--muted); }
+.health-item .value { color: var(--warning); font-weight: 800; font-variant-numeric: tabular-nums; }
+.empty-compact { min-height: 100px; display: grid; place-items: center; padding: 18px; border: 1px dashed var(--border); border-radius: 11px; color: var(--muted); text-align: center; }
+.boundary-card { position: relative; overflow: hidden; }
+.boundary-card::after { content: ""; position: absolute; right: -45px; top: -45px; width: 130px; height: 130px; border-radius: 50%; background: rgba(85, 220, 199, .09); }
+.boundary-label, .feature-state { display: inline-flex; padding: 4px 8px; border-radius: 999px; background: rgba(85, 220, 199, .12); color: var(--accent); font-size: 11px; font-weight: 800; letter-spacing: .05em; }
+.boundary-card h2 { margin-top: 14px; }
+.boundary-card p, .boundary-card li { color: var(--muted); }
+.boundary-card ul { padding-left: 18px; margin-bottom: 0; }
+
+.monitor-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
+.monitor-toolbar strong, .monitor-toolbar span { display: block; }
+.monitor-toolbar span { color: var(--muted); font-size: 13px; }
+.preview-grid { min-height: 500px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
+.preview-empty { grid-column: 1 / -1; min-height: 500px; display: grid; align-content: center; justify-items: center; padding: 30px; border: 1px dashed var(--border); border-radius: 15px; background: rgba(7, 20, 33, .55); color: var(--muted); text-align: center; }
+.preview-empty > span { width: 58px; height: 58px; display: grid; place-items: center; margin-bottom: 14px; border: 1px solid var(--border); border-radius: 50%; color: var(--accent); font-size: 24px; }
+.preview-empty strong { color: var(--text); font-size: 18px; }
+.preview-empty p { margin: 4px 0 0; }
+.preview-card { overflow: hidden; border: 1px solid var(--border); border-radius: 15px; background: #02070b; box-shadow: var(--shadow); }
+.preview-frame { position: relative; aspect-ratio: 16 / 9; background: #02070b; }
+.preview-frame iframe { width: 100%; height: 100%; display: block; border: 0; }
+.preview-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 14px; background: var(--surface); }
+.preview-meta strong, .preview-meta small { display: block; }
+.preview-meta small { color: var(--muted); }
+
+.filter-panel { display: grid; grid-template-columns: minmax(220px, 1.4fr) repeat(3, minmax(140px, .7fr)) auto; align-items: end; gap: 12px; margin-bottom: 14px; }
+label > span { display: block; margin-bottom: 6px; color: var(--muted); font-size: 12px; font-weight: 700; }
+input, select { width: 100%; min-height: 44px; padding: 0 12px; border: 1px solid var(--border); border-radius: 9px; background: #081927; color: var(--text); }
+input::placeholder { color: #72899c; }
+select { cursor: pointer; }
+.table-panel { padding: 0; overflow: hidden; }
+.table-status { padding: 12px 16px; border-bottom: 1px solid var(--border); color: var(--muted); font-size: 13px; }
+.device-table-wrap { overflow-x: auto; }
+table { width: 100%; border-collapse: collapse; min-width: 900px; }
+th, td { padding: 13px 14px; border-bottom: 1px solid rgba(41, 71, 98, .75); text-align: left; vertical-align: middle; }
+th { color: var(--muted); font-size: 11px; letter-spacing: .04em; }
+td { font-size: 13px; }
+td strong, td small { display: block; }
+td small { margin-top: 2px; color: var(--muted); }
+tbody tr:hover { background: rgba(34, 66, 92, .34); }
+.select-preview { width: 44px; height: 44px; display: grid; place-items: center; border: 0; }
+.select-preview input { width: 18px; min-height: auto; height: 18px; accent-color: var(--accent); }
+.status-badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 8px; border: 1px solid var(--border); border-radius: 999px; color: var(--muted); font-size: 11px; font-weight: 800; white-space: nowrap; }
+.status-badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
+.status-badge.success { color: var(--success); border-color: rgba(113, 225, 156, .35); background: rgba(113, 225, 156, .08); }
+.status-badge.warning { color: var(--warning); border-color: rgba(255, 209, 106, .35); background: rgba(255, 209, 106, .08); }
+.status-badge.danger { color: var(--danger); border-color: rgba(255, 138, 149, .35); background: rgba(255, 138, 149, .08); }
+.device-cards { display: none; }
+.pagination { min-height: 66px; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 10px 14px; }
+.pagination > span { color: var(--muted); font-size: 13px; }
+.pagination > div { display: flex; gap: 8px; }
+
+.honest-empty { max-width: 820px; min-height: 340px; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; padding: clamp(28px, 5vw, 60px); }
+.honest-empty h2 { margin: 18px 0 8px; font-size: 24px; }
+.honest-empty > p { max-width: 70ch; color: var(--muted); }
+.next-list { width: 100%; display: grid; gap: 8px; margin-top: 14px; }
+.next-list span { padding: 12px; border: 1px solid var(--border); border-radius: 10px; color: var(--muted); }
+.next-list strong { margin-right: 10px; color: var(--text); }
+
+dialog { width: min(520px, calc(100% - 28px)); padding: 0; border: 1px solid var(--border); border-radius: 16px; background: var(--surface); color: var(--text); box-shadow: 0 30px 90px rgba(0, 0, 0, .6); }
+dialog::backdrop { background: rgba(0, 7, 13, .72); backdrop-filter: blur(4px); }
+dialog form { padding: 22px; }
+.dialog-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
+.dialog-heading h2 { margin-top: 5px; font-size: 22px; }
+.icon-button { min-width: 44px; min-height: 44px; border: 1px solid var(--border); border-radius: 10px; background: transparent; cursor: pointer; font-size: 20px; }
+dialog p { color: var(--muted); }
+dialog label { display: block; margin-top: 14px; }
+.form-error { margin-top: 12px; padding: 10px 12px; border: 1px solid rgba(255, 138, 149, .5); border-radius: 9px; background: rgba(120, 28, 43, .28); color: #ffdce0; }
+.dialog-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 22px; }
+.toast { position: fixed; right: 20px; bottom: 24px; z-index: 200; max-width: min(420px, calc(100% - 40px)); padding: 13px 16px; border: 1px solid var(--border); border-radius: 11px; background: #173148; color: var(--text); box-shadow: var(--shadow); }
+.mobile-nav { display: none; }
+
+@media (max-width: 1080px) {
+  .metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
+  .content-grid, .operations-grid { grid-template-columns: 1fr; }
+  .filter-panel { grid-template-columns: repeat(2, minmax(0, 1fr)); }
+}
+
+@media (max-width: 760px) {
+  .engineering-banner { min-height: 38px; }
+  .shell { display: block; min-height: calc(100dvh - 38px); }
+  .sidebar { display: none; }
+  .topbar { min-height: 72px; padding: 12px 16px; }
+  .connection-pill { display: none; }
+  .topbar-actions .button { min-height: 44px; }
+  .degraded-banner { align-items: flex-start; flex-wrap: wrap; padding: 12px 16px; }
+  .degraded-banner span { flex-basis: calc(100% - 10px); }
+  main { padding: 24px 14px 92px; }
+  .page-heading { align-items: stretch; flex-direction: column; }
+  .page-heading .button, .heading-actions { width: 100%; }
+  .heading-actions .button { flex: 1; }
+  .metric-grid { grid-template-columns: 1fr 1fr; gap: 9px; }
+  .metric-card { min-height: 126px; padding: 15px; }
+  .metric-card strong { font-size: 25px; }
+  .panel { padding: 15px; }
+  .panel-heading, .monitor-toolbar { align-items: stretch; flex-direction: column; }
+  .preview-grid { grid-template-columns: 1fr; min-height: 420px; }
+  .preview-empty { min-height: 420px; }
+  .filter-panel { grid-template-columns: 1fr; }
+  input, select { min-height: 46px; font-size: 16px; }
+  .device-table-wrap { display: none; }
+  .device-cards { display: grid; gap: 10px; padding: 12px; }
+  .device-card { padding: 14px; border: 1px solid var(--border); border-radius: 12px; background: rgba(5, 18, 30, .45); }
+  .device-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
+  .device-card strong, .device-card small { display: block; }
+  .device-card small { color: var(--muted); }
+  .device-card dl { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 14px 0 0; }
+  .device-card dt { color: var(--muted); font-size: 11px; }
+  .device-card dd { margin: 2px 0 0; font-size: 13px; }
+  .pagination { align-items: stretch; flex-direction: column; }
+  .pagination > div { display: grid; grid-template-columns: 1fr 1fr; }
+  .pagination .button { min-height: 44px; }
+  .mobile-nav { position: fixed; left: 8px; right: 8px; bottom: 8px; z-index: 100; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); padding: 6px; border: 1px solid var(--border); border-radius: 15px; background: rgba(8, 24, 39, .96); box-shadow: 0 15px 40px rgba(0, 0, 0, .5); backdrop-filter: blur(18px); }
+  .mobile-nav button { min-height: 48px; border-radius: 10px; background: transparent; color: var(--muted); font-size: 12px; }
+  .mobile-nav button[aria-current="page"] { background: #153c3a; color: var(--accent); font-weight: 800; }
+  dialog form { padding: 18px; }
+  .dialog-actions { display: grid; grid-template-columns: 1fr 1fr; }
+  .dialog-actions .button { min-height: 46px; }
+  .toast { left: 14px; right: 14px; bottom: 78px; max-width: none; }
+}
+
+@media (max-width: 420px) {
+  .metric-grid { grid-template-columns: 1fr; }
+  .topbar { gap: 8px; }
+  .topbar strong { max-width: 170px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
+}

Sense/internal/console/assets/app.js

@@ -0,0 +1,594 @@
+"use strict";
+
+const state = {
+  token: "",
+  siteId: "",
+  config: { page_size: 16, max_active_previews: 4, webrtc_base_url: "" },
+  items: [],
+  quota: null,
+  cursors: [null],
+  pageIndex: 0,
+  nextCursor: null,
+  selected: new Map(),
+  previewing: new Set(),
+  loading: false,
+};
+
+const $ = (selector) => document.querySelector(selector);
+const $$ = (selector) => Array.from(document.querySelectorAll(selector));
+
+const labels = {
+  modality: { video: "视频", radar: "雷达", contact: "门磁", button: "按钮", wearable: "可穿戴", other: "其他" },
+  desired: { enabled: "启用", disabled: "停用" },
+  actual: { online: "在线", offline: "离线", failed: "失败", pending: "收敛中" },
+  adapter: { ready: "适配器就绪", pending: "适配器处理中", adapter_not_ready: "适配器未交付", authentication_failed: "认证失败", unavailable: "适配器不可用" },
+  capability: { video_capture: "成像", audio_capture: "音频", spatial_rule: "空间配置", telemetry: "遥测" },
+};
+
+function showToast(message) {
+  const toast = $("#toast");
+  toast.textContent = message;
+  toast.hidden = false;
+  window.clearTimeout(showToast.timer);
+  showToast.timer = window.setTimeout(() => { toast.hidden = true; }, 4200);
+}
+
+function setText(selector, value) {
+  const target = $(selector);
+  if (target) target.textContent = String(value);
+}
+
+function formatTime(value) {
+  if (!value) return "—";
+  const date = new Date(value);
+  if (Number.isNaN(date.getTime())) return "—";
+  return new Intl.DateTimeFormat("zh-CN", {
+    month: "2-digit", day: "2-digit", hour: "2-digit", minute: "2-digit", second: "2-digit",
+    hour12: false,
+  }).format(date);
+}
+
+function isPreviewEligible(device) {
+  return Array.isArray(device.capabilities) && device.capabilities.includes("video_capture") &&
+    device.desired_state === "enabled" && device.actual_state === "online" && device.converged === true;
+}
+
+function attentionNeeded(device) {
+  return device.converged !== true || device.actual_state === "offline" || device.actual_state === "failed" ||
+    device.adapter_status === "authentication_failed" || device.adapter_status === "unavailable";
+}
+
+function statusFor(device) {
+  if (device.actual_state === "online" && device.converged) return { text: "在线 · 已收敛", tone: "success" };
+  if (device.actual_state === "failed" || device.adapter_status === "authentication_failed") return { text: labels.adapter[device.adapter_status] || "失败", tone: "danger" };
+  if (device.actual_state === "offline") return { text: "离线", tone: "danger" };
+  return { text: device.converged ? (labels.actual[device.actual_state] || "未知") : "等待收敛", tone: "warning" };
+}
+
+function createStatusBadge(device) {
+  const value = statusFor(device);
+  const badge = document.createElement("span");
+  badge.className = `status-badge ${value.tone}`;
+  badge.textContent = value.text;
+  return badge;
+}
+
+function setConnected(connected) {
+  const pill = $("#connectionPill");
+  const foot = $(".sidebar-foot");
+  pill.classList.toggle("connected", connected);
+  foot.classList.toggle("connected", connected);
+  setText("#connectionText", connected ? "已连接" : "未连接");
+  setText("#sessionState", connected ? "会话仅驻留当前页面" : "尚未建立会话");
+}
+
+function setLoading(loading) {
+  state.loading = loading;
+  $("#refreshDevices").disabled = loading || !state.token;
+  $("#refreshOperations").disabled = loading || !state.token;
+  $("#retryLoad").disabled = loading || !state.token;
+  $("#prevPage").disabled = loading || state.pageIndex === 0;
+  $("#nextPage").disabled = loading || !state.nextCursor;
+  setText("#deviceTableStatus", loading ? "正在读取最新状态…" : state.token ? "已读取当前页真实设备状态。" : "请先建立会话。");
+}
+
+function showDegraded(title, message) {
+  setText("#degradedTitle", title);
+  setText("#degradedMessage", message);
+  $("#degradedBanner").hidden = false;
+}
+
+function clearDegraded() {
+  $("#degradedBanner").hidden = true;
+}
+
+async function apiFetch(path) {
+  const response = await fetch(path, {
+    headers: { Authorization: `Bearer ${state.token}`, Accept: "application/json" },
+    cache: "no-store",
+  });
+  let payload = null;
+  try { payload = await response.json(); } catch (_) { payload = null; }
+  if (!response.ok) {
+    const error = new Error(payload && payload.code ? payload.code : `http_${response.status}`);
+    error.status = response.status;
+    error.payload = payload;
+    throw error;
+  }
+  return payload;
+}
+
+function buildDevicePath(cursor) {
+  const params = new URLSearchParams();
+  params.set("limit", String(state.config.page_size));
+  const modality = $("#modalityFilter").value;
+  const desired = $("#desiredFilter").value;
+  const actual = $("#actualFilter").value;
+  if (modality) params.set("modality", modality);
+  if (desired) params.set("desired_state", desired);
+  if (actual) params.set("actual_state", actual);
+  if (cursor) params.set("cursor", cursor);
+  return `/api/v1/sites/${encodeURIComponent(state.siteId)}/devices?${params.toString()}`;
+}
+
+async function loadDevices(options = {}) {
+  if (!state.token || state.loading) return;
+  const cursor = state.cursors[state.pageIndex] || null;
+  setLoading(true);
+  clearDegraded();
+  try {
+    const payload = await apiFetch(buildDevicePath(cursor));
+    state.items = Array.isArray(payload.items) ? payload.items : [];
+    state.quota = payload.quota || null;
+    state.nextCursor = payload.page && payload.page.has_more ? payload.page.next_cursor : null;
+    for (const device of state.items) {
+      if (state.selected.has(device.id)) {
+        if (isPreviewEligible(device)) state.selected.set(device.id, device);
+        else state.selected.delete(device.id);
+      }
+    }
+    setConnected(true);
+    renderAll();
+    if (options.announce !== false) showToast(`已刷新第 ${state.pageIndex + 1} 页，共 ${state.items.length} 台设备`);
+    return true;
+  } catch (error) {
+    handleLoadError(error);
+    throw error;
+  } finally {
+    setLoading(false);
+  }
+}
+
+function handleLoadError(error) {
+  let title = "无法读取最新状态";
+  let message = "未知不会显示为在线。请检查 Sense 进程、网络和依赖后重试。";
+  if (error.status === 401) {
+    state.token = "";
+    setConnected(false);
+    title = "会话无效或已过期";
+    message = "Bearer token 已从页面内存清除，请重新建立会话。";
+  } else if (error.status === 403) {
+    title = "当前角色没有设备读取权限";
+    message = "页面不会尝试绕过权限；请使用具备 devices:read 的会话。";
+  } else if (error.status === 404) {
+    title = "无法访问该站点";
+    message = "目标不存在或当前会话无权访问，页面不会区分这两种情况。";
+  } else if (error.payload && ["quota_projection_unavailable", "area_policy_unavailable"].includes(error.payload.code)) {
+    title = "策略投影暂时不可用";
+    message = "已有链路不会因此被静默停用；相关新写入应保持禁用。";
+  }
+  showDegraded(title, message);
+  state.items = [];
+  state.quota = null;
+  renderAll();
+}
+
+function visibleItems() {
+  const query = $("#deviceSearch").value.trim().toLocaleLowerCase("zh-CN");
+  if (!query) return state.items;
+  return state.items.filter((device) => `${device.name} ${device.serial_number}`.toLocaleLowerCase("zh-CN").includes(query));
+}
+
+function renderAll() {
+  renderDevices();
+  renderMetrics();
+  renderHealth();
+  renderOperations();
+  renderSelection();
+}
+
+function renderMetrics() {
+  const used = state.quota && Number.isInteger(state.quota.used_video_channels) ? state.quota.used_video_channels : null;
+  const max = state.quota && Number.isInteger(state.quota.max_video_channels) ? state.quota.max_video_channels : null;
+  setText("#quotaMetric", used === null || max === null ? "—" : `${used} / ${max}`);
+  setText("#quotaHint", state.quota ? `投影状态：${state.quota.status || "未知"}` : "连接后读取 Bell 投影");
+  setText("#pageMetric", state.items.length);
+  setText("#convergedMetric", state.items.filter((device) => device.converged === true).length);
+  const attention = state.items.filter(attentionNeeded).length;
+  setText("#attentionMetric", attention);
+  setText("#deviceCount", state.items.length);
+  setText("#issueCount", attention);
+}
+
+function addTextCell(row, primary, secondary) {
+  const cell = document.createElement("td");
+  const strong = document.createElement("strong");
+  strong.textContent = primary || "—";
+  cell.appendChild(strong);
+  if (secondary) {
+    const small = document.createElement("small");
+    small.textContent = secondary;
+    cell.appendChild(small);
+  }
+  row.appendChild(cell);
+}
+
+function createPreviewCheckbox(device) {
+  const label = document.createElement("label");
+  label.className = "select-preview";
+  const checkbox = document.createElement("input");
+  checkbox.type = "checkbox";
+  checkbox.checked = state.selected.has(device.id);
+  checkbox.disabled = !isPreviewEligible(device);
+  checkbox.setAttribute("aria-label", checkbox.disabled ? `${device.name} 当前不可预览` : `选择 ${device.name} 进行预览`);
+  checkbox.addEventListener("change", () => toggleSelection(device, checkbox));
+  label.appendChild(checkbox);
+  return label;
+}
+
+function renderDevices() {
+  const rows = $("#deviceRows");
+  const cards = $("#deviceCards");
+  rows.replaceChildren();
+  cards.replaceChildren();
+  const items = visibleItems();
+  for (const device of items) {
+    const row = document.createElement("tr");
+    const selectCell = document.createElement("td");
+    selectCell.appendChild(createPreviewCheckbox(device));
+    row.appendChild(selectCell);
+    addTextCell(row, device.name, device.serial_number);
+    addTextCell(row, labels.modality[device.modality] || device.modality, (device.capabilities || []).map((value) => labels.capability[value] || value).join(" / "));
+    const statusCell = document.createElement("td");
+    statusCell.appendChild(createStatusBadge(device));
+    row.appendChild(statusCell);
+    addTextCell(row, labels.desired[device.desired_state] || device.desired_state, labels.actual[device.actual_state] || device.actual_state);
+    addTextCell(row, device.area_id || "—", device.projection_versions && device.projection_versions.area_policy_source_version ? `策略 v${device.projection_versions.area_policy_source_version}` : "策略版本未知");
+    addTextCell(row, formatTime(device.updated_at), device.next_attempt_at ? `重试 ${formatTime(device.next_attempt_at)}` : "");
+    rows.appendChild(row);
+
+    const card = document.createElement("article");
+    card.className = "device-card";
+    const cardHead = document.createElement("div");
+    cardHead.className = "device-card-head";
+    const identity = document.createElement("div");
+    const name = document.createElement("strong");
+    const serial = document.createElement("small");
+    name.textContent = device.name;
+    serial.textContent = device.serial_number;
+    identity.append(name, serial);
+    cardHead.append(identity, createPreviewCheckbox(device));
+    const status = createStatusBadge(device);
+    const details = document.createElement("dl");
+    const pairs = [
+      ["状态", "", status],
+      ["模态", labels.modality[device.modality] || device.modality],
+      ["期望 / 实际", `${labels.desired[device.desired_state] || device.desired_state} / ${labels.actual[device.actual_state] || device.actual_state}`],
+      ["Area", device.area_id || "—"],
+    ];
+    for (const [term, value, node] of pairs) {
+      const wrapper = document.createElement("div");
+      const dt = document.createElement("dt");
+      const dd = document.createElement("dd");
+      dt.textContent = term;
+      if (node) dd.appendChild(node); else dd.textContent = value;
+      wrapper.append(dt, dd);
+      details.appendChild(wrapper);
+    }
+    card.append(cardHead, details);
+    cards.appendChild(card);
+  }
+  if (items.length === 0) {
+    const empty = document.createElement("div");
+    empty.className = "empty-compact";
+    empty.textContent = state.token ? "当前页没有符合条件的设备。" : "请先建立会话。";
+    cards.appendChild(empty.cloneNode(true));
+    const cell = document.createElement("td");
+    cell.colSpan = 7;
+    cell.appendChild(empty);
+    const row = document.createElement("tr");
+    row.appendChild(cell);
+    rows.appendChild(row);
+  }
+  setText("#pageLabel", `第 ${state.pageIndex + 1} 页 · 每页 ${state.config.page_size} · 当前显示 ${items.length} 项`);
+  $("#prevPage").disabled = state.loading || state.pageIndex === 0;
+  $("#nextPage").disabled = state.loading || !state.nextCursor;
+}
+
+function toggleSelection(device, checkbox) {
+  if (checkbox.checked) {
+    if (!isPreviewEligible(device)) {
+      checkbox.checked = false;
+      showToast("只有在线、已启用且已收敛的视频设备可以预览");
+      return;
+    }
+    if (!state.selected.has(device.id) && state.selected.size >= state.config.max_active_previews) {
+      checkbox.checked = false;
+      showToast(`最多同时选择 ${state.config.max_active_previews} 路预览`);
+      return;
+    }
+    state.selected.set(device.id, device);
+  } else {
+    state.selected.delete(device.id);
+    if (state.previewing.has(device.id)) stopPreview(device.id);
+  }
+  renderSelection();
+  renderDevices();
+}
+
+function renderSelection() {
+  setText("#selectionCount", state.selected.size);
+  setText("#previewCount", `${state.previewing.size}/${state.config.max_active_previews}`);
+  $("#startPreview").disabled = state.selected.size === 0;
+  $("#stopAll").disabled = state.previewing.size === 0;
+}
+
+function previewURL(deviceID) {
+  const url = new URL(`${state.config.webrtc_base_url}/devices/${encodeURIComponent(deviceID)}`);
+  url.searchParams.set("controls", "true");
+  url.searchParams.set("muted", "true");
+  url.searchParams.set("autoplay", "true");
+  url.searchParams.set("playsInline", "true");
+  return url.toString();
+}
+
+function startSelectedPreviews() {
+  if (state.selected.size === 0) return;
+  state.previewing = new Set(state.selected.keys());
+  const grid = $("#previewGrid");
+  grid.replaceChildren();
+  for (const device of state.selected.values()) {
+    const card = document.createElement("article");
+    card.className = "preview-card";
+    card.dataset.deviceId = device.id;
+    const frame = document.createElement("div");
+    frame.className = "preview-frame";
+    const iframe = document.createElement("iframe");
+    iframe.title = `${device.name} 实时预览`;
+    iframe.loading = "eager";
+    iframe.allow = "autoplay; fullscreen";
+    iframe.sandbox = "allow-scripts allow-same-origin";
+    iframe.referrerPolicy = "no-referrer";
+    iframe.src = previewURL(device.id);
+    frame.appendChild(iframe);
+    const meta = document.createElement("div");
+    meta.className = "preview-meta";
+    const identity = document.createElement("div");
+    const name = document.createElement("strong");
+    const note = document.createElement("small");
+    name.textContent = device.name;
+    note.textContent = "MediaMTX WebRTC · 按需读取";
+    identity.append(name, note);
+    const stop = document.createElement("button");
+    stop.type = "button";
+    stop.className = "button secondary";
+    stop.textContent = "停止";
+    stop.addEventListener("click", () => stopPreview(device.id));
+    meta.append(identity, stop);
+    card.append(frame, meta);
+    grid.appendChild(card);
+  }
+  switchView("monitor");
+  renderSelection();
+  showToast(`已按需启动 ${state.previewing.size} 路预览`);
+}
+
+function stopPreview(deviceID) {
+  state.previewing.delete(deviceID);
+  const card = $(`[data-device-id="${CSS.escape(deviceID)}"]`);
+  if (card) {
+    const iframe = card.querySelector("iframe");
+    if (iframe) iframe.removeAttribute("src");
+    card.remove();
+  }
+  if (state.previewing.size === 0) renderPreviewEmpty();
+  renderSelection();
+}
+
+function stopAllPreviews() {
+  for (const iframe of $$("#previewGrid iframe")) iframe.removeAttribute("src");
+  state.previewing.clear();
+  renderPreviewEmpty();
+  renderSelection();
+  showToast("全部预览已停止");
+}
+
+function renderPreviewEmpty() {
+  const grid = $("#previewGrid");
+  grid.replaceChildren();
+  const empty = document.createElement("div");
+  empty.className = "preview-empty";
+  const mark = document.createElement("span");
+  mark.setAttribute("aria-hidden", "true");
+  mark.textContent = "▷";
+  const title = document.createElement("strong");
+  title.textContent = "尚未启动预览";
+  const note = document.createElement("p");
+  note.textContent = "前往设备页选择最多 4 路运行中的视频设备。";
+  empty.append(mark, title, note);
+  grid.appendChild(empty);
+}
+
+function renderHealth() {
+  const container = $("#overviewHealth");
+  container.replaceChildren();
+  if (!state.token || state.items.length === 0) {
+    const empty = document.createElement("div");
+    empty.className = "empty-compact";
+    empty.textContent = state.token ? "当前页没有设备事实。" : "建立会话后显示真实状态。";
+    container.appendChild(empty);
+    return;
+  }
+  const groups = [
+    ["在线且已收敛", state.items.filter((device) => device.actual_state === "online" && device.converged).length, "设备可用于按需预览"],
+    ["等待收敛", state.items.filter((device) => !device.converged).length, "期望 generation 尚未被完整观察"],
+    ["离线或失败", state.items.filter((device) => ["offline", "failed"].includes(device.actual_state)).length, "查看重试时间和稳定错误码"],
+  ];
+  for (const [title, count, note] of groups) container.appendChild(createHealthItem(title, count, note));
+}
+
+function createHealthItem(title, count, note) {
+  const item = document.createElement("div");
+  item.className = "health-item";
+  const text = document.createElement("div");
+  const strong = document.createElement("strong");
+  const small = document.createElement("small");
+  strong.textContent = title;
+  small.textContent = note;
+  text.append(strong, small);
+  const value = document.createElement("span");
+  value.className = "value";
+  value.textContent = String(count);
+  item.append(text, value);
+  return item;
+}
+
+function renderOperations() {
+  const container = $("#operationIssues");
+  container.replaceChildren();
+  const issues = state.items.filter(attentionNeeded);
+  if (issues.length === 0) {
+    const empty = document.createElement("div");
+    empty.className = "empty-compact";
+    empty.textContent = state.token ? "当前页没有已知对账差异；这不代表未加载设备或其他基础设施正常。" : "建立会话后显示。";
+    container.appendChild(empty);
+    return;
+  }
+  for (const device of issues) {
+    const message = device.last_error_code ? `错误 ${device.last_error_code}` : `generation ${device.observed_generation || 0} / ${device.generation || 0}`;
+    container.appendChild(createHealthItem(device.name, device.failure_count || 0, device.next_attempt_at ? `${message} · 下次 ${formatTime(device.next_attempt_at)}` : message));
+  }
+}
+
+function switchView(name) {
+  $$(".view").forEach((view) => {
+    const active = view.dataset.page === name;
+    view.hidden = !active;
+    view.classList.toggle("active", active);
+  });
+  $$('[data-view]').forEach((button) => {
+    const active = button.dataset.view === name;
+    button.toggleAttribute("aria-current", active);
+  });
+  $("#main-content").focus({ preventScroll: true });
+  window.scrollTo({ top: 0, behavior: "auto" });
+}
+
+function resetPaging() {
+  state.cursors = [null];
+  state.pageIndex = 0;
+  state.nextCursor = null;
+}
+
+async function connect(event) {
+  event.preventDefault();
+  const siteInput = $("#siteInput");
+  const tokenInput = $("#tokenInput");
+  const site = siteInput.value.trim();
+  const token = tokenInput.value;
+  const errorBox = $("#contextError");
+  errorBox.hidden = true;
+  if (!/^[A-Za-z0-9][A-Za-z0-9._:-]{0,63}$/.test(site)) {
+    errorBox.textContent = "Site ID 格式无效：只能使用 1～64 位字母、数字、点、下划线、冒号或连字符。";
+    errorBox.hidden = false;
+    siteInput.focus();
+    return;
+  }
+  if (!token || token.length > 4096) {
+    errorBox.textContent = "请输入有效的 Bearer token。";
+    errorBox.hidden = false;
+    tokenInput.focus();
+    return;
+  }
+  state.siteId = site;
+  state.token = token;
+  tokenInput.value = "";
+  setText("#siteContext", site);
+  resetPaging();
+  try {
+    await loadDevices({ announce: false });
+    $("#contextDialog").close();
+    showToast("会话已建立；token 仅驻留当前页面内存");
+  } catch (error) {
+    errorBox.textContent = error.status === 401 ? "认证失败，请检查 token 后重试。" : "无法读取该站点，请按页面提示检查权限或服务状态。";
+    errorBox.hidden = false;
+    $("#contextDialog").showModal();
+  }
+}
+
+async function initialize() {
+  try {
+    const response = await fetch("/sense-console/config", { cache: "no-store" });
+    if (!response.ok) throw new Error("config unavailable");
+    state.config = await response.json();
+    if (state.config.page_size !== 16 || state.config.max_active_previews !== 4 || state.config.recording_and_playback !== false) {
+      throw new Error("unsafe console bounds");
+    }
+  } catch (_) {
+    showDegraded("控制台配置不可用", "页面保持只读且不会尝试连接视频，请检查 Sense 启动配置。");
+    $$("button, input, select").forEach((control) => { control.disabled = true; });
+    return;
+  }
+  setConnected(false);
+  renderAll();
+  $("#contextDialog").showModal();
+}
+
+$$('[data-view]').forEach((button) => button.addEventListener("click", () => switchView(button.dataset.view)));
+$$('[data-view-target]').forEach((button) => button.addEventListener("click", () => switchView(button.dataset.viewTarget)));
+$("#changeContext").addEventListener("click", () => $("#contextDialog").showModal());
+$("#closeContext").addEventListener("click", () => $("#contextDialog").close());
+$("#cancelContext").addEventListener("click", () => $("#contextDialog").close());
+$("#contextForm").addEventListener("submit", connect);
+$("#refreshDevices").addEventListener("click", () => loadDevices());
+$("#refreshOperations").addEventListener("click", () => loadDevices());
+$("#retryLoad").addEventListener("click", () => state.token ? loadDevices() : $("#contextDialog").showModal());
+$("#startPreview").addEventListener("click", startSelectedPreviews);
+$("#stopAll").addEventListener("click", stopAllPreviews);
+$("#deviceSearch").addEventListener("input", renderDevices);
+
+for (const selector of ["#modalityFilter", "#desiredFilter", "#actualFilter"]) {
+  $(selector).addEventListener("change", () => {
+    resetPaging();
+    if (state.token) loadDevices();
+  });
+}
+
+$("#clearFilters").addEventListener("click", () => {
+  $("#deviceSearch").value = "";
+  $("#modalityFilter").value = "";
+  $("#desiredFilter").value = "";
+  $("#actualFilter").value = "";
+  resetPaging();
+  if (state.token) loadDevices(); else renderDevices();
+});
+
+$("#nextPage").addEventListener("click", async () => {
+  if (!state.nextCursor) return;
+  state.cursors[state.pageIndex + 1] = state.nextCursor;
+  state.pageIndex += 1;
+  try { await loadDevices(); } catch (_) { state.pageIndex -= 1; }
+});
+
+$("#prevPage").addEventListener("click", async () => {
+  if (state.pageIndex === 0) return;
+  state.pageIndex -= 1;
+  try { await loadDevices(); } catch (_) { state.pageIndex += 1; }
+});
+
+window.addEventListener("beforeunload", () => {
+  state.token = "";
+  for (const iframe of $$("#previewGrid iframe")) iframe.removeAttribute("src");
+});
+
+initialize();

Sense/internal/console/assets/index.html

@@ -0,0 +1,158 @@
+<!doctype html>
+<html lang="zh-CN">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <meta name="color-scheme" content="dark">
+  <title>YoVision Sense · 接入运维工作台</title>
+  <link rel="stylesheet" href="/sense-console/app.css">
+  <script defer src="/sense-console/app.js"></script>
+</head>
+<body>
+  <a class="skip-link" href="#main-content">跳到主要内容</a>
+  <div class="engineering-banner" role="note">
+    回环工程控制台 · 非录像/回放 · 不代表生产公网入口
+  </div>
+  <div class="shell">
+    <aside class="sidebar" aria-label="Sense 主导航">
+      <div class="brand">
+        <span class="brand-mark" aria-hidden="true">S</span>
+        <span><strong>YoVision Sense</strong><small>接入运维工作台</small></span>
+      </div>
+      <nav class="primary-nav">
+        <button type="button" data-view="overview" aria-current="page"><span aria-hidden="true">◫</span>运行总览</button>
+        <button type="button" data-view="monitor"><span aria-hidden="true">▷</span>实时监控 <span class="nav-count" id="previewCount">0/4</span></button>
+        <button type="button" data-view="devices"><span aria-hidden="true">▣</span>设备 <span class="nav-count" id="deviceCount">0</span></button>
+        <button type="button" data-view="onboarding"><span aria-hidden="true">⇧</span>接入任务</button>
+        <button type="button" data-view="operations"><span aria-hidden="true">⌁</span>运维中心 <span class="nav-count" id="issueCount">0</span></button>
+      </nav>
+      <div class="sidebar-foot">
+        <span class="status-dot" aria-hidden="true"></span>
+        <span id="sessionState">尚未建立会话</span>
+      </div>
+    </aside>
+
+    <div class="workspace">
+      <header class="topbar">
+        <div>
+          <span class="eyebrow">当前站点</span>
+          <strong id="siteContext">未选择</strong>
+        </div>
+        <div class="topbar-actions">
+          <span class="connection-pill" id="connectionPill"><span class="connection-dot" aria-hidden="true"></span><span id="connectionText">未连接</span></span>
+          <button type="button" class="button secondary" id="changeContext">连接设置</button>
+        </div>
+      </header>
+
+      <div class="degraded-banner" id="degradedBanner" role="status" hidden>
+        <strong id="degradedTitle">无法读取最新状态</strong>
+        <span id="degradedMessage">未知不会显示为在线，请检查会话后重试。</span>
+        <button type="button" class="button ghost" id="retryLoad">重试</button>
+      </div>
+
+      <main id="main-content" tabindex="-1">
+        <section class="view active" data-page="overview" aria-labelledby="overviewTitle">
+          <div class="page-heading">
+            <div><span class="eyebrow">SENSE / OVERVIEW</span><h1 id="overviewTitle">运行总览</h1><p>先看已加载事实，再进入设备或运维中心处理。</p></div>
+            <button type="button" class="button primary" data-view-target="devices">查看设备</button>
+          </div>
+          <div class="metric-grid" aria-label="当前页运行指标">
+            <article class="metric-card"><span>视频配额</span><strong id="quotaMetric">—</strong><small id="quotaHint">连接后读取 Bell 投影</small></article>
+            <article class="metric-card"><span>当前页设备</span><strong id="pageMetric">0</strong><small>默认每页 16，不代表站点总数</small></article>
+            <article class="metric-card"><span>当前页已收敛</span><strong id="convergedMetric">0</strong><small>期望态与实际态分开计算</small></article>
+            <article class="metric-card warning"><span>当前页需关注</span><strong id="attentionMetric">0</strong><small>失败、离线或尚未收敛</small></article>
+          </div>
+          <div class="content-grid">
+            <article class="panel">
+              <div class="panel-heading"><div><h2>接入健康</h2><p>只汇总当前设备页，不推断未加载设备。</p></div><button type="button" class="button ghost" data-view-target="operations">进入运维中心</button></div>
+              <div class="health-list" id="overviewHealth"><div class="empty-compact">建立会话后显示真实状态。</div></div>
+            </article>
+            <article class="panel boundary-card">
+              <span class="boundary-label">本纵切边界</span>
+              <h2>实时监看，不替代客户 NVR</h2>
+              <p>常态录像仍留在客户现有 NVR；当前仅验证 Sense 设备管理面和 MediaMTX 按需播放。录像计划、录像索引与回放未实现。</p>
+              <ul><li>同时最多 4 路预览</li><li>刷新后 Bearer token 自动丢失</li><li>Sense 与播放端均限回环地址</li></ul>
+            </article>
+          </div>
+        </section>
+
+        <section class="view" data-page="monitor" aria-labelledby="monitorTitle" hidden>
+          <div class="page-heading">
+            <div><span class="eyebrow">SENSE / LIVE</span><h1 id="monitorTitle">实时监控</h1><p>从当前页设备中选择，只有明确在线且已收敛的视频设备可预览。</p></div>
+            <div class="heading-actions"><button type="button" class="button secondary" id="stopAll">停止全部</button><button type="button" class="button primary" id="startPreview">开始预览</button></div>
+          </div>
+          <div class="monitor-toolbar panel">
+            <div><strong>已选择 <span id="selectionCount">0</span> / 4</strong><span>默认不自动播放，不加载未选择设备。</span></div>
+            <button type="button" class="button ghost" data-view-target="devices">选择设备</button>
+          </div>
+          <div class="preview-grid" id="previewGrid" aria-live="polite">
+            <div class="preview-empty"><span aria-hidden="true">▷</span><strong>尚未启动预览</strong><p>前往设备页选择最多 4 路运行中的视频设备。</p></div>
+          </div>
+        </section>
+
+        <section class="view" data-page="devices" aria-labelledby="devicesTitle" hidden>
+          <div class="page-heading">
+            <div><span class="eyebrow">SENSE / DEVICES</span><h1 id="devicesTitle">设备</h1><p>统一台账按模态与能力展示；列表只读取脱敏 Control API 字段。</p></div>
+            <button type="button" class="button primary" id="refreshDevices">刷新状态</button>
+          </div>
+          <section class="panel filter-panel" aria-label="设备筛选">
+            <label><span>当前页搜索</span><input type="search" id="deviceSearch" placeholder="名称 / 序列号" autocomplete="off"></label>
+            <label><span>模态</span><select id="modalityFilter"><option value="">全部模态</option><option value="video">视频</option><option value="radar">雷达</option><option value="contact">门磁</option><option value="button">按钮</option><option value="wearable">可穿戴</option><option value="other">其他</option></select></label>
+            <label><span>期望态</span><select id="desiredFilter"><option value="">全部期望态</option><option value="enabled">启用</option><option value="disabled">停用</option></select></label>
+            <label><span>实际态</span><select id="actualFilter"><option value="">全部实际态</option><option value="online">在线</option><option value="offline">离线</option><option value="failed">失败</option><option value="pending">收敛中</option></select></label>
+            <button type="button" class="button secondary" id="clearFilters">清除筛选</button>
+          </section>
+          <div class="table-panel panel">
+            <div class="table-status" id="deviceTableStatus" role="status">请先建立会话。</div>
+            <div class="device-table-wrap">
+              <table>
+                <thead><tr><th scope="col">预览</th><th scope="col">设备</th><th scope="col">模态 / 能力</th><th scope="col">状态</th><th scope="col">期望 / 实际</th><th scope="col">Area</th><th scope="col">最后变化</th></tr></thead>
+                <tbody id="deviceRows"></tbody>
+              </table>
+            </div>
+            <div class="device-cards" id="deviceCards"></div>
+            <div class="pagination"><span id="pageLabel">第 1 页 · 每页 16</span><div><button type="button" class="button secondary" id="prevPage" disabled>上一页</button><button type="button" class="button secondary" id="nextPage" disabled>下一页</button></div></div>
+          </div>
+        </section>
+
+        <section class="view" data-page="onboarding" aria-labelledby="onboardingTitle" hidden>
+          <div class="page-heading"><div><span class="eyebrow">SENSE / ONBOARDING</span><h1 id="onboardingTitle">接入任务</h1><p>批量导入仍是已确认需求，但不属于本次设备与实时监看纵切。</p></div></div>
+          <article class="panel honest-empty">
+            <span class="feature-state">尚未实现</span><h2>批量导入与逐项激活将在独立任务完成</h2>
+            <p>当前 Control API 支持单设备创建和最多 128 项的批量启停，但没有冻结批量 CSV 创建契约。本页不会用假上传或假成功伪装交付。</p>
+            <div class="next-list"><span><strong>已具备</strong>设备查询、期望态修改、批量启停与结果查询</span><span><strong>后续补齐</strong>模板下载、逐行校验、只重试失败项和任务历史</span></div>
+          </article>
+        </section>
+
+        <section class="view" data-page="operations" aria-labelledby="operationsTitle" hidden>
+          <div class="page-heading">
+            <div><span class="eyebrow">SENSE / OPERATIONS</span><h1 id="operationsTitle">运维中心</h1><p>仅展示接入控制面的事实，不混入 Bell 业务预警。</p></div>
+            <a class="button secondary" href="/metrics" target="_blank" rel="noreferrer">打开低基数指标</a>
+          </div>
+          <div class="operations-grid">
+            <article class="panel"><div class="panel-heading"><div><h2>当前页对账差异</h2><p>失败、退避与尚未观察到当前 generation。</p></div><button type="button" class="button ghost" id="refreshOperations">刷新</button></div><div id="operationIssues" class="health-list"><div class="empty-compact">建立会话后显示。</div></div></article>
+            <article class="panel boundary-card"><span class="boundary-label">数据边界</span><h2>完整运维 API 尚未冻结</h2><p>分片、边缘隧道、补传、孤儿扫描和运维告警已经有后端能力或设计，但本纵切只消费设备 Control API；未取到的数据不会显示为正常。</p></article>
+          </div>
+        </section>
+      </main>
+    </div>
+  </div>
+
+  <nav class="mobile-nav" aria-label="移动端主导航">
+    <button type="button" data-view="overview" aria-current="page">总览</button><button type="button" data-view="monitor">监控</button><button type="button" data-view="devices">设备</button><button type="button" data-view="onboarding">接入</button><button type="button" data-view="operations">运维</button>
+  </nav>
+
+  <dialog id="contextDialog" aria-labelledby="contextTitle">
+    <form method="dialog" id="contextForm">
+      <div class="dialog-heading"><div><span class="eyebrow">LOOPBACK SESSION</span><h2 id="contextTitle">连接 Sense Control API</h2></div><button type="button" class="icon-button" id="closeContext" aria-label="关闭连接设置">×</button></div>
+      <p>Site ID 只用于当前页面上下文；Bearer token 仅保存在内存，刷新页面后自动丢失。</p>
+      <label><span>Site ID</span><input id="siteInput" name="site" required maxlength="128" autocomplete="off" placeholder="例如 school-main"></label>
+      <label><span>Bearer token</span><input id="tokenInput" name="token" type="password" required autocomplete="off" placeholder="不会保存或回显"></label>
+      <div class="form-error" id="contextError" role="alert" hidden></div>
+      <div class="dialog-actions"><button type="button" class="button secondary" id="cancelContext">取消</button><button type="submit" class="button primary" id="connectButton">连接并读取</button></div>
+    </form>
+  </dialog>
+
+  <div class="toast" id="toast" role="status" aria-live="polite" hidden></div>
+</body>
+</html>

Sense/internal/console/handler.go

@@ -0,0 +1,100 @@
+// Package console serves the loopback-only Sense engineering console.
+package console
+
+import (
+	"embed"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net"
+	"net/http"
+	"net/url"
+	"strings"
+)
+
+//go:embed assets/index.html assets/app.css assets/app.js
+var assets embed.FS
+
+type handler struct {
+	previewBaseURL string
+	previewOrigin  string
+}
+
+// NewHandler builds the self-contained console handler. Config validation also
+// enforces this boundary; validating here keeps the package safe in isolation.
+func NewHandler(previewBaseURL string) (http.Handler, error) {
+	parsed, err := url.Parse(previewBaseURL)
+	if err != nil || parsed.Host == "" ||
+		(parsed.Scheme != "http" && parsed.Scheme != "https") ||
+		parsed.User != nil || parsed.RawQuery != "" || parsed.Fragment != "" ||
+		(parsed.Path != "" && parsed.Path != "/") {
+		return nil, errors.New("invalid Sense console WebRTC base URL")
+	}
+	host := parsed.Hostname()
+	ip := net.ParseIP(host)
+	if host != "localhost" && (ip == nil || !ip.IsLoopback()) {
+		return nil, errors.New("Sense console WebRTC base URL is not loopback")
+	}
+	base := strings.TrimRight(parsed.String(), "/")
+	return &handler{
+		previewBaseURL: base,
+		previewOrigin:  parsed.Scheme + "://" + parsed.Host,
+	}, nil
+}
+
+func (h *handler) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
+	h.securityHeaders(writer)
+	if request.Method != http.MethodGet && request.Method != http.MethodHead {
+		writer.Header().Set("Allow", "GET, HEAD")
+		http.Error(writer, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+	switch request.URL.Path {
+	case "/sense-console/":
+		h.serveAsset(writer, request, "assets/index.html", "text/html; charset=utf-8")
+	case "/sense-console/app.css":
+		h.serveAsset(writer, request, "assets/app.css", "text/css; charset=utf-8")
+	case "/sense-console/app.js":
+		h.serveAsset(writer, request, "assets/app.js", "text/javascript; charset=utf-8")
+	case "/sense-console/config":
+		writer.Header().Set("Content-Type", "application/json")
+		if request.Method == http.MethodHead {
+			writer.WriteHeader(http.StatusOK)
+			return
+		}
+		_ = json.NewEncoder(writer).Encode(map[string]any{
+			"webrtc_base_url":        h.previewBaseURL,
+			"page_size":              16,
+			"max_active_previews":    4,
+			"recording_and_playback": false,
+		})
+	default:
+		http.NotFound(writer, request)
+	}
+}
+
+func (h *handler) securityHeaders(writer http.ResponseWriter) {
+	writer.Header().Set("Cache-Control", "no-store")
+	writer.Header().Set("Content-Security-Policy", fmt.Sprintf(
+		"default-src 'none'; script-src 'self'; style-src 'self'; connect-src 'self'; frame-src %s; img-src 'self' data:; font-src 'none'; base-uri 'none'; form-action 'self'; frame-ancestors 'none'",
+		h.previewOrigin,
+	))
+	writer.Header().Set("Permissions-Policy", "camera=(), microphone=(), geolocation=(), payment=(), usb=()")
+	writer.Header().Set("Referrer-Policy", "no-referrer")
+	writer.Header().Set("X-Content-Type-Options", "nosniff")
+	writer.Header().Set("X-Frame-Options", "DENY")
+}
+
+func (h *handler) serveAsset(writer http.ResponseWriter, request *http.Request, path, contentType string) {
+	contents, err := assets.ReadFile(path)
+	if err != nil {
+		http.Error(writer, "asset unavailable", http.StatusInternalServerError)
+		return
+	}
+	writer.Header().Set("Content-Type", contentType)
+	writer.Header().Set("Content-Length", fmt.Sprintf("%d", len(contents)))
+	writer.WriteHeader(http.StatusOK)
+	if request.Method == http.MethodGet {
+		_, _ = writer.Write(contents)
+	}
+}

Sense/internal/console/handler_test.go

@@ -0,0 +1,95 @@
+package console
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+func TestHandlerServesSelfContainedConsoleWithSecurityHeaders(t *testing.T) {
+	handler, err := NewHandler("http://127.0.0.1:8889/")
+	if err != nil {
+		t.Fatal(err)
+	}
+	request := httptest.NewRequest(http.MethodGet, "/sense-console/", nil)
+	response := httptest.NewRecorder()
+	handler.ServeHTTP(response, request)
+	if response.Code != http.StatusOK {
+		t.Fatalf("unexpected status: %d", response.Code)
+	}
+	body := response.Body.String()
+	for _, required := range []string{"YoVision Sense", "/sense-console/app.css", "/sense-console/app.js"} {
+		if !strings.Contains(body, required) {
+			t.Fatalf("console HTML lacks %q", required)
+		}
+	}
+	for _, forbidden := range []string{"http://", "https://", "<script>", "<style>"} {
+		if strings.Contains(body, forbidden) {
+			t.Fatalf("console HTML contains forbidden inline/external marker %q", forbidden)
+		}
+	}
+	csp := response.Header().Get("Content-Security-Policy")
+	if !strings.Contains(csp, "frame-src http://127.0.0.1:8889") ||
+		!strings.Contains(csp, "frame-ancestors 'none'") {
+		t.Fatalf("unexpected CSP: %s", csp)
+	}
+	if response.Header().Get("Cache-Control") != "no-store" ||
+		response.Header().Get("X-Content-Type-Options") != "nosniff" {
+		t.Fatal("security headers are incomplete")
+	}
+}
+
+func TestHandlerReturnsBoundedRuntimeConfig(t *testing.T) {
+	handler, err := NewHandler("http://localhost:8889")
+	if err != nil {
+		t.Fatal(err)
+	}
+	response := httptest.NewRecorder()
+	handler.ServeHTTP(response, httptest.NewRequest(http.MethodGet, "/sense-console/config", nil))
+	var payload struct {
+		WebRTCBaseURL        string `json:"webrtc_base_url"`
+		PageSize             int    `json:"page_size"`
+		MaxActivePreviews    int    `json:"max_active_previews"`
+		RecordingAndPlayback bool   `json:"recording_and_playback"`
+	}
+	if err := json.Unmarshal(response.Body.Bytes(), &payload); err != nil {
+		t.Fatal(err)
+	}
+	if payload.WebRTCBaseURL != "http://localhost:8889" || payload.PageSize != 16 ||
+		payload.MaxActivePreviews != 4 || payload.RecordingAndPlayback {
+		t.Fatalf("unexpected runtime config: %+v", payload)
+	}
+}
+
+func TestHandlerRejectsRemoteOrCredentialedPreviewBase(t *testing.T) {
+	for _, value := range []string{
+		"https://media.example", "http://user@127.0.0.1:8889", "http://127.0.0.1:8889/path",
+	} {
+		if _, err := NewHandler(value); err == nil {
+			t.Fatalf("invalid preview base was accepted: %s", value)
+		}
+	}
+}
+
+func TestHandlerRejectsWritesAndUnknownAssets(t *testing.T) {
+	handler, err := NewHandler("http://127.0.0.1:8889")
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, test := range []struct {
+		method string
+		path   string
+		want   int
+	}{
+		{http.MethodPost, "/sense-console/", http.StatusMethodNotAllowed},
+		{http.MethodGet, "/sense-console/missing", http.StatusNotFound},
+	} {
+		response := httptest.NewRecorder()
+		handler.ServeHTTP(response, httptest.NewRequest(test.method, test.path, nil))
+		if response.Code != test.want {
+			t.Fatalf("%s %s: got %d, want %d", test.method, test.path, response.Code, test.want)
+		}
+	}
+}

Sense/internal/metrics/metrics.go

@@ -0,0 +1,189 @@
+// Package metrics exposes a deliberately small, low-cardinality Prometheus
+// surface without adding a runtime dependency. Tenant, Site, device and Path
+// identifiers never become labels.
+package metrics
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"sync/atomic"
+	"time"
+)
+
+func GenerateInstanceID() (string, error) {
+	value := make([]byte, 12)
+	if _, err := rand.Read(value); err != nil {
+		return "", errors.New("generate Sense instance identifier")
+	}
+	return "ins_" + hex.EncodeToString(value), nil
+}
+
+type Registry struct {
+	instanceID string
+	version    string
+
+	reconcileRunOK       atomic.Uint64
+	reconcileRunError    atomic.Uint64
+	reconcileItemOK      atomic.Uint64
+	reconcileItemError   atomic.Uint64
+	reconcileItemLost    atomic.Uint64
+	reconcileDurationNS  atomic.Uint64
+	reconcileTotal       atomic.Int64
+	reconcileUnconverged atomic.Int64
+
+	orphanScanOK       atomic.Uint64
+	orphanScanError    atomic.Uint64
+	orphanObserved     atomic.Int64
+	orphanOwnedStale   atomic.Int64
+	orphanUnowned      atomic.Int64
+	orphanBlockedRatio atomic.Uint64
+	orphanBlockedAge   atomic.Uint64
+	orphanBlockedScope atomic.Uint64
+	orphanDeleted      atomic.Uint64
+	orphanDeleteFailed atomic.Uint64
+}
+
+func New(instanceID, version string) *Registry {
+	return &Registry{instanceID: instanceID, version: version}
+}
+
+func (r *Registry) ObserveReconcileRun(err error, duration time.Duration) {
+	if err == nil {
+		r.reconcileRunOK.Add(1)
+	} else {
+		r.reconcileRunError.Add(1)
+	}
+	if duration < 0 {
+		duration = 0
+	}
+	r.reconcileDurationNS.Store(uint64(duration))
+}
+
+func (r *Registry) ObserveReconcileItem(result string) {
+	switch result {
+	case "success":
+		r.reconcileItemOK.Add(1)
+	case "lease_lost":
+		r.reconcileItemLost.Add(1)
+	default:
+		r.reconcileItemError.Add(1)
+	}
+}
+
+func (r *Registry) SetConvergence(total, unconverged int) {
+	r.reconcileTotal.Store(int64(total))
+	r.reconcileUnconverged.Store(int64(unconverged))
+}
+
+func (r *Registry) ObserveOrphanScan(observed, ownedStale, unowned int, err error) {
+	if err == nil {
+		r.orphanScanOK.Add(1)
+		r.orphanObserved.Store(int64(observed))
+		r.orphanOwnedStale.Store(int64(ownedStale))
+		r.orphanUnowned.Store(int64(unowned))
+	} else {
+		r.orphanScanError.Add(1)
+	}
+}
+
+func (r *Registry) ObserveOrphanCleanupBlocked(reason string) {
+	switch reason {
+	case "snapshot_expired":
+		r.orphanBlockedAge.Add(1)
+	case "ratio_exceeded":
+		r.orphanBlockedRatio.Add(1)
+	default:
+		r.orphanBlockedScope.Add(1)
+	}
+}
+
+func (r *Registry) ObserveOrphanCleanup(deleted, failed int) {
+	if deleted > 0 {
+		r.orphanDeleted.Add(uint64(deleted))
+	}
+	if failed > 0 {
+		r.orphanDeleteFailed.Add(uint64(failed))
+	}
+}
+
+func (r *Registry) Handler() http.Handler {
+	return http.HandlerFunc(func(writer http.ResponseWriter, _ *http.Request) {
+		writer.Header().Set("Content-Type", "text/plain; version=0.0.4; charset=utf-8")
+		writer.Header().Set("Cache-Control", "no-store")
+		_, _ = writer.Write([]byte(r.render()))
+	})
+}
+
+func (r *Registry) render() string {
+	var output strings.Builder
+	writeMetric(&output, "sense_build_info", "Sense process build and instance information.",
+		fmt.Sprintf("{instance_id=%s,version=%s}", quoteLabel(r.instanceID), quoteLabel(r.version)), 1)
+	writeMetric(&output, "sense_reconcile_runs_total", "Reconciliation runs by result.",
+		`{result="success"}`, r.reconcileRunOK.Load())
+	writeSample(&output, "sense_reconcile_runs_total", `{result="error"}`, r.reconcileRunError.Load())
+	writeMetric(&output, "sense_reconcile_items_total", "Reconciliation items by fixed result.",
+		`{result="success"}`, r.reconcileItemOK.Load())
+	writeSample(&output, "sense_reconcile_items_total", `{result="error"}`, r.reconcileItemError.Load())
+	writeSample(&output, "sense_reconcile_items_total", `{result="lease_lost"}`, r.reconcileItemLost.Load())
+	writeMetric(&output, "sense_reconcile_last_duration_seconds", "Duration of the last reconciliation run.",
+		"", float64(r.reconcileDurationNS.Load())/float64(time.Second))
+	writeMetric(&output, "sense_reconcile_devices", "Enabled video devices by convergence state.",
+		`{state="total"}`, r.reconcileTotal.Load())
+	writeSample(&output, "sense_reconcile_devices", `{state="unconverged"}`, r.reconcileUnconverged.Load())
+	writeMetric(&output, "sense_orphan_scan_runs_total", "MediaMTX orphan scans by result.",
+		`{result="success"}`, r.orphanScanOK.Load())
+	writeSample(&output, "sense_orphan_scan_runs_total", `{result="error"}`, r.orphanScanError.Load())
+	writeMetric(&output, "sense_orphan_paths", "Path counts from the last successful orphan scan.",
+		`{classification="observed"}`, r.orphanObserved.Load())
+	writeSample(&output, "sense_orphan_paths", `{classification="owned_stale"}`, r.orphanOwnedStale.Load())
+	writeSample(&output, "sense_orphan_paths", `{classification="unowned"}`, r.orphanUnowned.Load())
+	writeMetric(&output, "sense_orphan_cleanup_blocked_total", "Orphan cleanups blocked by a fixed safety reason.",
+		`{reason="ratio_exceeded"}`, r.orphanBlockedRatio.Load())
+	writeSample(&output, "sense_orphan_cleanup_blocked_total", `{reason="snapshot_expired"}`, r.orphanBlockedAge.Load())
+	writeSample(&output, "sense_orphan_cleanup_blocked_total", `{reason="scope_changed"}`, r.orphanBlockedScope.Load())
+	writeMetric(&output, "sense_orphan_cleanup_items_total", "Owned stale path cleanup results.",
+		`{result="deleted"}`, r.orphanDeleted.Load())
+	writeSample(&output, "sense_orphan_cleanup_items_total", `{result="failed"}`, r.orphanDeleteFailed.Load())
+	return output.String()
+}
+
+func writeMetric(builder *strings.Builder, name, help, labels string, value any) {
+	metricType := "gauge"
+	if strings.HasSuffix(name, "_total") {
+		metricType = "counter"
+	}
+	builder.WriteString("# HELP ")
+	builder.WriteString(name)
+	builder.WriteByte(' ')
+	builder.WriteString(help)
+	builder.WriteByte('\n')
+	builder.WriteString("# TYPE ")
+	builder.WriteString(name)
+	builder.WriteByte(' ')
+	builder.WriteString(metricType)
+	builder.WriteByte('\n')
+	writeSample(builder, name, labels, value)
+}
+
+func writeSample(builder *strings.Builder, name, labels string, value any) {
+	builder.WriteString(name)
+	builder.WriteString(labels)
+	builder.WriteByte(' ')
+	switch typed := value.(type) {
+	case float64:
+		builder.WriteString(strconv.FormatFloat(typed, 'f', 6, 64))
+	default:
+		builder.WriteString(fmt.Sprint(typed))
+	}
+	builder.WriteByte('\n')
+}
+
+func quoteLabel(value string) string {
+	replacer := strings.NewReplacer(`\`, `\\`, "\n", `\n`, `"`, `\"`)
+	return `"` + replacer.Replace(value) + `"`
+}

Sense/internal/metrics/metrics_test.go

@@ -0,0 +1,84 @@
+package metrics
+
+import (
+	"net/http/httptest"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+)
+
+func TestHandlerUsesOnlyFixedLowCardinalityLabels(t *testing.T) {
+	t.Parallel()
+	registry := New("ins_test-1", "v-test")
+	registry.ObserveReconcileRun(nil, 1500*time.Millisecond)
+	registry.ObserveReconcileItem("success")
+	registry.ObserveReconcileItem("lease_lost")
+	registry.SetConvergence(16, 2)
+	registry.ObserveOrphanScan(20, 1, 3, nil)
+	registry.ObserveOrphanCleanupBlocked("ratio_exceeded")
+	registry.ObserveOrphanCleanup(1, 1)
+
+	request := httptest.NewRequest("GET", "/metrics", nil)
+	response := httptest.NewRecorder()
+	registry.Handler().ServeHTTP(response, request)
+	body := response.Body.String()
+	for _, expected := range []string{
+		`sense_build_info{instance_id="ins_test-1",version="v-test"} 1`,
+		`sense_reconcile_items_total{result="lease_lost"} 1`,
+		`sense_reconcile_devices{state="unconverged"} 2`,
+		`sense_orphan_paths{classification="owned_stale"} 1`,
+		`sense_orphan_cleanup_blocked_total{reason="ratio_exceeded"} 1`,
+	} {
+		if !strings.Contains(body, expected) {
+			t.Fatalf("metrics output lacks %q:\n%s", expected, body)
+		}
+	}
+	for _, forbidden := range []string{
+		"tenant_id", "site_id", "device_id", "path_name", "rtsp://", "credential",
+	} {
+		if strings.Contains(body, forbidden) {
+			t.Fatalf("high-cardinality or secret-bearing label appeared: %q", forbidden)
+		}
+	}
+	if response.Header().Get("Cache-Control") != "no-store" {
+		t.Fatal("metrics responses must not be cached")
+	}
+}
+
+func TestRegistryIsSafeForConcurrentObservers(t *testing.T) {
+	t.Parallel()
+	registry := New("ins_concurrent", "dev")
+	var wait sync.WaitGroup
+	for index := 0; index < 32; index++ {
+		wait.Add(1)
+		go func() {
+			defer wait.Done()
+			for count := 0; count < 100; count++ {
+				registry.ObserveReconcileItem("success")
+				registry.SetConvergence(128, count%17)
+			}
+		}()
+	}
+	wait.Wait()
+	response := httptest.NewRecorder()
+	registry.Handler().ServeHTTP(response, httptest.NewRequest("GET", "/metrics", nil))
+	if !strings.Contains(response.Body.String(), `sense_reconcile_items_total{result="success"} 3200`) {
+		t.Fatalf("concurrent counter lost updates: %s", response.Body.String())
+	}
+}
+
+func TestGenerateInstanceIDShape(t *testing.T) {
+	t.Parallel()
+	first, err := GenerateInstanceID()
+	if err != nil {
+		t.Fatal(err)
+	}
+	second, err := GenerateInstanceID()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(first) != 28 || !strings.HasPrefix(first, "ins_") || first == second {
+		t.Fatalf("unexpected instance identifiers: %q %q", first, second)
+	}
+}

Sense/internal/mtx/client.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
+	"sort"
 	"strings"
 
 	mediamtxapi "yovision/sense/internal/mtx/generated"
@@ -31,9 +32,63 @@ type pathAPI interface {
 	ConfigPathsGetWithResponse(context.Context, string, ...mediamtxapi.RequestEditorFn) (*mediamtxapi.ConfigPathsGetResponse, error)
 	ConfigPathsPatchWithResponse(context.Context, string, mediamtxapi.ConfigPathsPatchJSONRequestBody, ...mediamtxapi.RequestEditorFn) (*mediamtxapi.ConfigPathsPatchResponse, error)
 	ConfigPathsDeleteWithResponse(context.Context, string, ...mediamtxapi.RequestEditorFn) (*mediamtxapi.ConfigPathsDeleteResponse, error)
+	ConfigPathsListWithResponse(context.Context, *mediamtxapi.ConfigPathsListParams, ...mediamtxapi.RequestEditorFn) (*mediamtxapi.ConfigPathsListResponse, error)
 	PathsGetWithResponse(context.Context, string, ...mediamtxapi.RequestEditorFn) (*mediamtxapi.PathsGetResponse, error)
 }
 
+// ListPathNames enumerates only configuration names. Sources are deliberately
+// discarded so inventory and orphan reports cannot expose stream URIs.
+func (c *Client) ListPathNames(ctx context.Context) ([]string, error) {
+	const (
+		itemsPerPage = 100
+		maxPages     = 1000
+	)
+	result := make(map[string]struct{})
+	seenPages := make(map[string]struct{})
+	for page := 0; page < maxPages; page++ {
+		pageValue, limitValue := page, itemsPerPage
+		response, err := c.api.ConfigPathsListWithResponse(ctx, &mediamtxapi.ConfigPathsListParams{
+			Page: &pageValue, ItemsPerPage: &limitValue,
+		})
+		if err != nil {
+			return nil, fmt.Errorf("MediaMTX list paths transport: %w", err)
+		}
+		if response.StatusCode() != http.StatusOK || response.JSON200 == nil ||
+			response.JSON200.PageCount == nil || response.JSON200.Items == nil {
+			return nil, &APIError{Operation: "list paths", StatusCode: response.StatusCode()}
+		}
+		pageCount := *response.JSON200.PageCount
+		if pageCount < 0 || pageCount > maxPages {
+			return nil, &APIError{Operation: "list paths pagination", StatusCode: response.StatusCode()}
+		}
+		pageNames := make([]string, 0, len(*response.JSON200.Items))
+		for _, item := range *response.JSON200.Items {
+			if item.Name == nil || strings.TrimSpace(*item.Name) == "" {
+				return nil, &APIError{Operation: "list paths response", StatusCode: response.StatusCode()}
+			}
+			pageNames = append(pageNames, *item.Name)
+			result[*item.Name] = struct{}{}
+		}
+		sort.Strings(pageNames)
+		signature := strings.Join(pageNames, "\x00")
+		if page > 0 && signature != "" {
+			if _, duplicate := seenPages[signature]; duplicate {
+				return nil, &APIError{Operation: "list paths repeated page", StatusCode: response.StatusCode()}
+			}
+		}
+		seenPages[signature] = struct{}{}
+		if int64(page+1) >= pageCount {
+			values := make([]string, 0, len(result))
+			for name := range result {
+				values = append(values, name)
+			}
+			sort.Strings(values)
+			return values, nil
+		}
+	}
+	return nil, &APIError{Operation: "list paths page limit", StatusCode: http.StatusOK}
+}
+
 type Client struct {
 	api pathAPI
 }

Sense/internal/mtx/client_test.go

@@ -6,6 +6,8 @@ import (
 	"fmt"
 	"net/http"
 	"net/http/httptest"
+	"sort"
+	"strconv"
 	"strings"
 	"sync"
 	"testing"
@@ -21,6 +23,38 @@ func (f *fakeMediaMTX) ServeHTTP(writer http.ResponseWriter, request *http.Reque
 	f.mu.Lock()
 	defer f.mu.Unlock()
 	writer.Header().Set("Content-Type", "application/json")
+	if request.URL.Path == "/v3/config/paths/list" {
+		page, _ := strconv.Atoi(request.URL.Query().Get("page"))
+		limit, _ := strconv.Atoi(request.URL.Query().Get("itemsPerPage"))
+		if limit <= 0 {
+			limit = 100
+		}
+		names := make([]string, 0, len(f.paths))
+		for name := range f.paths {
+			names = append(names, name)
+		}
+		sort.Strings(names)
+		start := page * limit
+		if start > len(names) {
+			start = len(names)
+		}
+		end := start + limit
+		if end > len(names) {
+			end = len(names)
+		}
+		items := make([]map[string]any, 0, end-start)
+		for _, name := range names[start:end] {
+			items = append(items, map[string]any{"name": name})
+		}
+		pageCount := 0
+		if len(names) > 0 {
+			pageCount = (len(names) + limit - 1) / limit
+		}
+		_ = json.NewEncoder(writer).Encode(map[string]any{
+			"itemCount": len(names), "pageCount": pageCount, "items": items,
+		})
+		return
+	}
 	prefixes := map[string]string{
 		"/v3/config/paths/get/":    "get",
 		"/v3/config/paths/add/":    "add",
@@ -72,6 +106,54 @@ func (f *fakeMediaMTX) ServeHTTP(writer http.ResponseWriter, request *http.Reque
 	http.NotFound(writer, request)
 }
 
+func TestListPathNamesUsesPaginationAndDoesNotReturnSources(t *testing.T) {
+	t.Parallel()
+	paths := make(map[string]string)
+	for index := 0; index < 205; index++ {
+		paths[fmt.Sprintf("camera-%03d", index)] = fmt.Sprintf("rtsp://secret.invalid/%d", index)
+	}
+	fake := &fakeMediaMTX{paths: paths}
+	server := httptest.NewServer(fake)
+	defer server.Close()
+	client, err := NewClient(server.URL, server.Client())
+	if err != nil {
+		t.Fatal(err)
+	}
+	values, err := client.ListPathNames(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(values) != 205 || values[0] != "camera-000" || values[204] != "camera-204" {
+		t.Fatalf("unexpected path inventory: len=%d first=%q last=%q", len(values), values[0], values[len(values)-1])
+	}
+	for _, value := range values {
+		if strings.Contains(value, "rtsp") || strings.Contains(value, "secret") {
+			t.Fatalf("source leaked from path inventory: %q", value)
+		}
+	}
+}
+
+func TestListPathNamesRejectsRepeatedPage(t *testing.T) {
+	t.Parallel()
+	server := httptest.NewServer(http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
+		writer.Header().Set("Content-Type", "application/json")
+		if request.URL.Path != "/v3/config/paths/list" {
+			http.NotFound(writer, request)
+			return
+		}
+		_, _ = writer.Write([]byte(`{"itemCount":2,"pageCount":2,"items":[{"name":"same"}]}`))
+	}))
+	defer server.Close()
+	client, err := NewClient(server.URL, server.Client())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := client.ListPathNames(context.Background()); err == nil ||
+		!strings.Contains(err.Error(), "repeated page") {
+		t.Fatalf("repeated pagination was accepted: %v", err)
+	}
+}
+
 func TestGeneratedClientCreateReadDeleteMapping(t *testing.T) {
 	t.Parallel()
 	fake := &fakeMediaMTX{paths: make(map[string]string)}

Sense/internal/orphan/orphan.go

@@ -0,0 +1,400 @@
+// Package orphan reports MediaMTX configuration paths that do not match the
+// current Sense ledger. Only paths with durable Sense ownership evidence can
+// ever enter the controlled cleanup set.
+package orphan
+
+import (
+	"context"
+	"crypto/rand"
+	"errors"
+	"fmt"
+	"math/big"
+	"regexp"
+	"sort"
+	"strings"
+	"time"
+
+	"yovision/sense/internal/metrics"
+	"yovision/sense/internal/store"
+)
+
+const (
+	defaultLeaseDuration    = 30 * time.Second
+	defaultOperationTimeout = 20 * time.Second
+	reportTTL               = 15 * time.Minute
+	maxCleanupItems         = 128
+	crockford               = "0123456789ABCDEFGHJKMNPQRSTVWXYZ"
+)
+
+var (
+	ErrLeaseHeld       = errors.New("orphan operation lease held")
+	ErrConfirmation    = errors.New("orphan cleanup confirmation invalid")
+	ErrSnapshotExpired = errors.New("orphan scan snapshot expired")
+	ErrSafetyBlocked   = errors.New("orphan cleanup safety gate blocked")
+	operatorIDPattern  = regexp.MustCompile(`^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$`)
+)
+
+type Runtime interface {
+	ListPathNames(context.Context) ([]string, error)
+	DeletePath(context.Context, string) error
+}
+
+type Manager struct {
+	repository       store.OrphanRepository
+	runtime          Runtime
+	instanceID       string
+	metrics          *metrics.Registry
+	now              func() time.Time
+	leaseDuration    time.Duration
+	operationTimeout time.Duration
+}
+
+type CleanupResult struct {
+	ScanID  string `json:"scan_id"`
+	Deleted int    `json:"deleted"`
+	Failed  int    `json:"failed"`
+}
+
+func New(
+	repository store.OrphanRepository,
+	runtime Runtime,
+	instanceID string,
+	registry *metrics.Registry,
+) *Manager {
+	return &Manager{
+		repository: repository, runtime: runtime, instanceID: instanceID, metrics: registry,
+		now: time.Now, leaseDuration: defaultLeaseDuration, operationTimeout: defaultOperationTimeout,
+	}
+}
+
+func (m *Manager) Report(ctx context.Context) (store.OrphanScan, error) {
+	now := m.now().UTC()
+	token, err := randomToken()
+	if err != nil {
+		return store.OrphanScan{}, err
+	}
+	acquired, err := m.repository.AcquireOperationalLease(
+		ctx, store.OperationalLeaseOrphanScan, m.instanceID, token, now, m.leaseDuration,
+	)
+	if err != nil {
+		m.observeScan(0, 0, 0, err)
+		return store.OrphanScan{}, err
+	}
+	if !acquired {
+		return store.OrphanScan{}, ErrLeaseHeld
+	}
+	saved := false
+	defer func() {
+		if saved {
+			return
+		}
+		releaseCtx, cancel := context.WithTimeout(context.Background(), time.Second)
+		defer cancel()
+		_ = m.repository.ReleaseOperationalLease(
+			releaseCtx, store.OperationalLeaseOrphanScan, m.instanceID, token, m.now().UTC(),
+		)
+	}()
+
+	operationCtx, cancel := context.WithTimeout(ctx, m.operationTimeout)
+	paths, err := m.runtime.ListPathNames(operationCtx)
+	cancel()
+	if err != nil {
+		m.observeScan(0, 0, 0, err)
+		return store.OrphanScan{}, fmt.Errorf("list MediaMTX paths: %w", err)
+	}
+	ownership, err := m.repository.ListMediaPathOwnership(ctx)
+	if err != nil {
+		m.observeScan(0, 0, 0, err)
+		return store.OrphanScan{}, err
+	}
+	findings, stale, unowned := classify(paths, ownership)
+	allowed, reason := safetyGate(stale, len(paths))
+	completedAt := m.now().UTC()
+	acquired, err = m.repository.AcquireOperationalLease(
+		ctx, store.OperationalLeaseOrphanScan, m.instanceID, token, completedAt, m.leaseDuration,
+	)
+	if err != nil || !acquired {
+		if err == nil {
+			err = store.ErrOperationalLeaseLost
+		}
+		m.observeScan(len(paths), stale, unowned, err)
+		return store.OrphanScan{}, err
+	}
+	id, err := newScanID(completedAt)
+	if err != nil {
+		m.observeScan(0, 0, 0, err)
+		return store.OrphanScan{}, err
+	}
+	scan := store.OrphanScan{
+		ID: id, InstanceID: m.instanceID, ObservedCount: len(paths),
+		OwnedStaleCount: stale, UnownedCount: unowned,
+		SafetyAllowed: allowed, SafetyReason: reason,
+		CompletedAt: completedAt, ExpiresAt: completedAt.Add(reportTTL), Findings: findings,
+	}
+	if err := m.repository.SaveOrphanScan(ctx, scan, m.instanceID, token); err != nil {
+		m.observeScan(len(paths), stale, unowned, err)
+		return store.OrphanScan{}, err
+	}
+	saved = true
+	m.observeScan(len(paths), stale, unowned, nil)
+	return scan, nil
+}
+
+func classify(
+	paths []string,
+	ownership []store.MediaPathOwnership,
+) ([]store.OrphanFinding, int, int) {
+	history := make(map[string]store.MediaPathOwnership, len(ownership))
+	for _, value := range ownership {
+		history[value.PathName] = value
+	}
+	unique := make(map[string]struct{}, len(paths))
+	for _, path := range paths {
+		unique[path] = struct{}{}
+	}
+	ordered := make([]string, 0, len(unique))
+	for path := range unique {
+		ordered = append(ordered, path)
+	}
+	sort.Strings(ordered)
+	findings := make([]store.OrphanFinding, 0)
+	stale, unowned := 0, 0
+	for _, path := range ordered {
+		value, known := history[path]
+		switch {
+		case known && value.CurrentClaim:
+			continue
+		case known:
+			stale++
+			findings = append(findings, store.OrphanFinding{
+				PathName: path, Classification: store.OrphanOwnedStale, DeviceID: value.DeviceID,
+			})
+		default:
+			unowned++
+			findings = append(findings, store.OrphanFinding{
+				PathName: path, Classification: store.OrphanUnowned,
+			})
+		}
+	}
+	return findings, stale, unowned
+}
+
+func safetyGate(candidates, observed int) (bool, string) {
+	switch {
+	case candidates <= 0:
+		return false, "no_candidates"
+	case observed <= 0:
+		return false, "empty_inventory"
+	case candidates > maxCleanupItems:
+		return false, "scope_exceeded"
+	case candidates*100 > observed*10:
+		return false, "ratio_exceeded"
+	default:
+		return true, "allowed"
+	}
+}
+
+func (m *Manager) Apply(
+	ctx context.Context,
+	scanID, actorID, confirmation string,
+) (CleanupResult, error) {
+	result := CleanupResult{ScanID: scanID}
+	if !operatorIDPattern.MatchString(actorID) || confirmation != "DELETE "+scanID {
+		m.blocked("scope_changed")
+		return result, ErrConfirmation
+	}
+	now := m.now().UTC()
+	token, err := randomToken()
+	if err != nil {
+		return result, err
+	}
+	acquired, err := m.repository.AcquireOperationalLease(
+		ctx, store.OperationalLeaseOrphanCleanup, m.instanceID, token, now, m.leaseDuration,
+	)
+	if err != nil {
+		return result, err
+	}
+	if !acquired {
+		return result, ErrLeaseHeld
+	}
+	defer func() {
+		releaseCtx, cancel := context.WithTimeout(context.Background(), time.Second)
+		defer cancel()
+		_ = m.repository.ReleaseOperationalLease(
+			releaseCtx, store.OperationalLeaseOrphanCleanup, m.instanceID, token, m.now().UTC(),
+		)
+	}()
+
+	scan, err := m.repository.GetOrphanScan(ctx, scanID)
+	if err != nil {
+		m.blocked("scope_changed")
+		return result, err
+	}
+	if !scan.ExpiresAt.After(now) {
+		m.blocked("snapshot_expired")
+		return result, ErrSnapshotExpired
+	}
+	if !scan.SafetyAllowed {
+		m.blocked(scan.SafetyReason)
+		return result, fmt.Errorf("%w: %s", ErrSafetyBlocked, scan.SafetyReason)
+	}
+	operationCtx, cancel := context.WithTimeout(ctx, m.operationTimeout)
+	paths, err := m.runtime.ListPathNames(operationCtx)
+	cancel()
+	if err != nil {
+		return result, fmt.Errorf("refresh MediaMTX path inventory: %w", err)
+	}
+	ownership, err := m.repository.ListMediaPathOwnership(ctx)
+	if err != nil {
+		return result, err
+	}
+	candidates := cleanupCandidates(scan, paths, ownership)
+	if len(candidates) == 0 {
+		return result, nil
+	}
+	allowed, reason := safetyGate(len(candidates), len(uniqueNames(paths)))
+	if !allowed {
+		m.blocked(reason)
+		return result, fmt.Errorf("%w: %s", ErrSafetyBlocked, reason)
+	}
+	var failures []error
+	for _, path := range candidates {
+		now = m.now().UTC()
+		acquired, err = m.repository.AcquireOperationalLease(
+			ctx, store.OperationalLeaseOrphanCleanup, m.instanceID, token, now, m.leaseDuration,
+		)
+		if err != nil || !acquired {
+			if err == nil {
+				err = ErrLeaseHeld
+			}
+			failures = append(failures, err)
+			break
+		}
+		itemCtx, itemCancel := context.WithTimeout(ctx, m.operationTimeout)
+		deleteErr := m.runtime.DeletePath(itemCtx, path)
+		itemCancel()
+		status, code := "deleted", ""
+		if deleteErr != nil {
+			status, code = "failed", "media_error"
+			result.Failed++
+			failures = append(failures, fmt.Errorf("delete owned stale path: %w", deleteErr))
+		} else {
+			result.Deleted++
+		}
+		if err := m.repository.RecordOrphanCleanup(
+			ctx, scanID, path, actorID, status, code, m.now().UTC(),
+		); err != nil {
+			failures = append(failures, err)
+			break
+		}
+	}
+	if m.metrics != nil {
+		m.metrics.ObserveOrphanCleanup(result.Deleted, result.Failed)
+	}
+	return result, errors.Join(failures...)
+}
+
+func cleanupCandidates(
+	scan store.OrphanScan,
+	paths []string,
+	ownership []store.MediaPathOwnership,
+) []string {
+	runtime := uniqueNames(paths)
+	history := make(map[string]store.MediaPathOwnership, len(ownership))
+	for _, value := range ownership {
+		history[value.PathName] = value
+	}
+	values := make([]string, 0)
+	for _, finding := range scan.Findings {
+		if finding.Classification != store.OrphanOwnedStale || finding.Deleted {
+			continue
+		}
+		_, present := runtime[finding.PathName]
+		owner, known := history[finding.PathName]
+		if present && known && !owner.CurrentClaim && owner.DeviceID == finding.DeviceID {
+			values = append(values, finding.PathName)
+		}
+	}
+	sort.Strings(values)
+	return values
+}
+
+func uniqueNames(values []string) map[string]struct{} {
+	result := make(map[string]struct{}, len(values))
+	for _, value := range values {
+		result[value] = struct{}{}
+	}
+	return result
+}
+
+func (m *Manager) Run(ctx context.Context, interval time.Duration, report func(error)) {
+	run := func() {
+		_, err := m.Report(ctx)
+		if err != nil && !errors.Is(err, ErrLeaseHeld) && ctx.Err() == nil && report != nil {
+			report(err)
+		}
+	}
+	run()
+	ticker := time.NewTicker(interval)
+	defer ticker.Stop()
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-ticker.C:
+			run()
+		}
+	}
+}
+
+func (m *Manager) observeScan(observed, stale, unowned int, err error) {
+	if m.metrics != nil {
+		m.metrics.ObserveOrphanScan(observed, stale, unowned, err)
+	}
+}
+
+func (m *Manager) blocked(reason string) {
+	if m.metrics != nil {
+		m.metrics.ObserveOrphanCleanupBlocked(reason)
+	}
+}
+
+func randomToken() (string, error) {
+	value := make([]byte, 16)
+	if _, err := rand.Read(value); err != nil {
+		return "", errors.New("generate fencing token")
+	}
+	const alphabet = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	result := make([]byte, 22)
+	number := new(big.Int).SetBytes(value)
+	base := big.NewInt(int64(len(alphabet)))
+	remainder := new(big.Int)
+	for index := len(result) - 1; index >= 0; index-- {
+		number.QuoRem(number, base, remainder)
+		result[index] = alphabet[remainder.Int64()]
+	}
+	return string(result), nil
+}
+
+func newScanID(now time.Time) (string, error) {
+	value := make([]byte, 16)
+	milliseconds := uint64(now.UTC().UnixMilli())
+	value[0], value[1], value[2] = byte(milliseconds>>40), byte(milliseconds>>32), byte(milliseconds>>24)
+	value[3], value[4], value[5] = byte(milliseconds>>16), byte(milliseconds>>8), byte(milliseconds)
+	if _, err := rand.Read(value[6:]); err != nil {
+		return "", errors.New("generate orphan scan identifier")
+	}
+	number := new(big.Int).SetBytes(value)
+	base := big.NewInt(32)
+	remainder := new(big.Int)
+	encoded := make([]byte, 26)
+	for index := len(encoded) - 1; index >= 0; index-- {
+		number.QuoRem(number, base, remainder)
+		encoded[index] = crockford[remainder.Int64()]
+	}
+	return "scan_" + string(encoded), nil
+}
+
+func Confirmation(scanID string) string {
+	return strings.Join([]string{"DELETE", scanID}, " ")
+}

Sense/internal/orphan/orphan_test.go

@@ -0,0 +1,272 @@
+package orphan
+
+import (
+	"context"
+	"errors"
+	"sort"
+	"sync"
+	"testing"
+	"time"
+
+	"yovision/sense/internal/store"
+)
+
+type fakeLease struct {
+	owner, token string
+	expires      time.Time
+}
+
+type fakeRepository struct {
+	mu        sync.Mutex
+	leases    map[string]fakeLease
+	ownership []store.MediaPathOwnership
+	scans     map[string]store.OrphanScan
+	deleted   map[string]map[string]bool
+}
+
+func newFakeRepository() *fakeRepository {
+	return &fakeRepository{
+		leases: make(map[string]fakeLease), scans: make(map[string]store.OrphanScan),
+		deleted: make(map[string]map[string]bool),
+	}
+}
+
+func (f *fakeRepository) AcquireOperationalLease(
+	_ context.Context,
+	name, owner, token string,
+	now time.Time,
+	duration time.Duration,
+) (bool, error) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	current, exists := f.leases[name]
+	if exists && current.expires.After(now) && (current.owner != owner || current.token != token) {
+		return false, nil
+	}
+	f.leases[name] = fakeLease{owner: owner, token: token, expires: now.Add(duration)}
+	return true, nil
+}
+
+func (f *fakeRepository) ReleaseOperationalLease(
+	_ context.Context,
+	name, owner, token string,
+	now time.Time,
+) error {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	current := f.leases[name]
+	if current.owner == owner && current.token == token {
+		current.expires = now
+		f.leases[name] = current
+	}
+	return nil
+}
+
+func (f *fakeRepository) ListMediaPathOwnership(context.Context) ([]store.MediaPathOwnership, error) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	return append([]store.MediaPathOwnership(nil), f.ownership...), nil
+}
+
+func (f *fakeRepository) SaveOrphanScan(
+	_ context.Context,
+	scan store.OrphanScan,
+	owner, token string,
+) error {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	lease := f.leases[store.OperationalLeaseOrphanScan]
+	if lease.owner != owner || lease.token != token || !lease.expires.After(scan.CompletedAt) {
+		return store.ErrOperationalLeaseLost
+	}
+	f.scans[scan.ID] = cloneScan(scan)
+	lease.expires = scan.CompletedAt
+	f.leases[store.OperationalLeaseOrphanScan] = lease
+	return nil
+}
+
+func (f *fakeRepository) GetOrphanScan(_ context.Context, id string) (store.OrphanScan, error) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	scan, exists := f.scans[id]
+	if !exists {
+		return store.OrphanScan{}, store.ErrOrphanScanNotFound
+	}
+	result := cloneScan(scan)
+	for index := range result.Findings {
+		result.Findings[index].Deleted = f.deleted[id][result.Findings[index].PathName]
+	}
+	return result, nil
+}
+
+func (f *fakeRepository) RecordOrphanCleanup(
+	_ context.Context,
+	scanID, pathName, _, status, _ string,
+	_ time.Time,
+) error {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	if f.deleted[scanID] == nil {
+		f.deleted[scanID] = make(map[string]bool)
+	}
+	if status == "deleted" {
+		f.deleted[scanID][pathName] = true
+	}
+	return nil
+}
+
+func cloneScan(value store.OrphanScan) store.OrphanScan {
+	value.Findings = append([]store.OrphanFinding(nil), value.Findings...)
+	return value
+}
+
+type fakeRuntime struct {
+	paths   map[string]bool
+	fail    map[string]bool
+	deleted []string
+}
+
+func (f *fakeRuntime) ListPathNames(context.Context) ([]string, error) {
+	values := make([]string, 0, len(f.paths))
+	for path, present := range f.paths {
+		if present {
+			values = append(values, path)
+		}
+	}
+	sort.Strings(values)
+	return values, nil
+}
+
+func (f *fakeRuntime) DeletePath(_ context.Context, path string) error {
+	if f.fail[path] {
+		return errors.New("redacted media failure")
+	}
+	delete(f.paths, path)
+	f.deleted = append(f.deleted, path)
+	return nil
+}
+
+func TestSafetyGateUsesExactTenPercentBoundary(t *testing.T) {
+	t.Parallel()
+	if allowed, reason := safetyGate(1, 10); !allowed || reason != "allowed" {
+		t.Fatalf("exact 10%% boundary was rejected: %v %s", allowed, reason)
+	}
+	if allowed, reason := safetyGate(1, 9); allowed || reason != "ratio_exceeded" {
+		t.Fatalf("more than 10%% was accepted: %v %s", allowed, reason)
+	}
+	if allowed, reason := safetyGate(129, 2000); allowed || reason != "scope_exceeded" {
+		t.Fatalf("129-item scope was accepted: %v %s", allowed, reason)
+	}
+}
+
+func TestReportClassifiesOwnershipAndApplyNeverDeletesUnowned(t *testing.T) {
+	repository := newFakeRepository()
+	repository.ownership = []store.MediaPathOwnership{
+		{PathName: "owned-stale", DeviceID: "old-device"},
+		{PathName: "owned-current", DeviceID: "live-device", CurrentClaim: true},
+	}
+	runtime := &fakeRuntime{paths: map[string]bool{
+		"owned-stale": true, "owned-current": true,
+		"unowned-1": true, "unowned-2": true, "unowned-3": true, "unowned-4": true,
+		"unowned-5": true, "unowned-6": true, "unowned-7": true, "unowned-8": true,
+	}, fail: make(map[string]bool)}
+	now := time.Date(2026, 8, 7, 0, 0, 0, 0, time.UTC)
+	manager := New(repository, runtime, "ins_test", nil)
+	manager.now = func() time.Time { return now }
+	scan, err := manager.Report(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if scan.ObservedCount != 10 || scan.OwnedStaleCount != 1 || scan.UnownedCount != 8 || !scan.SafetyAllowed {
+		t.Fatalf("unexpected report: %+v", scan)
+	}
+	result, err := manager.Apply(
+		context.Background(), scan.ID, "operator-1", Confirmation(scan.ID),
+	)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if result.Deleted != 1 || len(runtime.deleted) != 1 || runtime.deleted[0] != "owned-stale" {
+		t.Fatalf("cleanup escaped owned stale set: result=%+v deleted=%v", result, runtime.deleted)
+	}
+	for _, path := range []string{"owned-current", "unowned-1", "unowned-8"} {
+		if !runtime.paths[path] {
+			t.Fatalf("cleanup deleted protected path %q", path)
+		}
+	}
+}
+
+func TestApplyBlocksExpiredOrOversizedSnapshotBeforeDelete(t *testing.T) {
+	repository := newFakeRepository()
+	repository.ownership = []store.MediaPathOwnership{{PathName: "stale", DeviceID: "old"}}
+	runtime := &fakeRuntime{paths: map[string]bool{"stale": true}, fail: make(map[string]bool)}
+	now := time.Date(2026, 8, 7, 0, 0, 0, 0, time.UTC)
+	manager := New(repository, runtime, "ins_test", nil)
+	manager.now = func() time.Time { return now }
+	scan, err := manager.Report(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if scan.SafetyAllowed || scan.SafetyReason != "ratio_exceeded" {
+		t.Fatalf("single-path 100%% cleanup was not blocked: %+v", scan)
+	}
+	if _, err := manager.Apply(context.Background(), scan.ID, "operator", Confirmation(scan.ID)); !errors.Is(err, ErrSafetyBlocked) {
+		t.Fatalf("expected ratio gate, got %v", err)
+	}
+	if len(runtime.deleted) != 0 {
+		t.Fatal("ratio-blocked cleanup mutated MediaMTX")
+	}
+
+	for index := 0; index < 9; index++ {
+		runtime.paths[string(rune('a'+index))] = true
+	}
+	scan, err = manager.Report(context.Background())
+	if err != nil || !scan.SafetyAllowed {
+		t.Fatalf("expected a fresh 1/10 executable report: %+v %v", scan, err)
+	}
+	now = now.Add(reportTTL)
+	if _, err := manager.Apply(context.Background(), scan.ID, "operator", Confirmation(scan.ID)); !errors.Is(err, ErrSnapshotExpired) {
+		t.Fatalf("expected expired snapshot, got %v", err)
+	}
+	if len(runtime.deleted) != 0 {
+		t.Fatal("expired cleanup mutated MediaMTX")
+	}
+}
+
+func TestApplyIsRetryableAndCannotExpandBeyondSnapshot(t *testing.T) {
+	repository := newFakeRepository()
+	repository.ownership = []store.MediaPathOwnership{
+		{PathName: "stale-a", DeviceID: "old-a"},
+		{PathName: "stale-b", DeviceID: "old-b"},
+	}
+	runtime := &fakeRuntime{paths: make(map[string]bool), fail: map[string]bool{"stale-b": true}}
+	runtime.paths["stale-a"], runtime.paths["stale-b"] = true, true
+	for index := 0; index < 18; index++ {
+		runtime.paths[string(rune(0x100+index))] = true
+	}
+	now := time.Date(2026, 8, 7, 0, 0, 0, 0, time.UTC)
+	manager := New(repository, runtime, "ins_test", nil)
+	manager.now = func() time.Time { return now }
+	scan, err := manager.Report(context.Background())
+	if err != nil || !scan.SafetyAllowed {
+		t.Fatalf("expected 2/20 report: %+v %v", scan, err)
+	}
+	repository.ownership = append(repository.ownership,
+		store.MediaPathOwnership{PathName: "new-stale", DeviceID: "new-old"})
+	runtime.paths["new-stale"] = true
+	result, err := manager.Apply(context.Background(), scan.ID, "operator", Confirmation(scan.ID))
+	if err == nil || result.Deleted != 1 || result.Failed != 1 {
+		t.Fatalf("expected one partial failure: %+v %v", result, err)
+	}
+	if !runtime.paths["new-stale"] {
+		t.Fatal("cleanup expanded beyond the approved snapshot")
+	}
+	runtime.fail["stale-b"] = false
+	result, err = manager.Apply(context.Background(), scan.ID, "operator", Confirmation(scan.ID))
+	if err != nil || result.Deleted != 1 || result.Failed != 0 {
+		t.Fatalf("failed item was not retryable: %+v %v", result, err)
+	}
+	if !runtime.paths["new-stale"] {
+		t.Fatal("retry expanded beyond the approved snapshot")
+	}
+}

Sense/internal/reconcile/reconciler.go

@@ -3,12 +3,15 @@ package reconcile
 
 import (
 	"context"
+	"crypto/rand"
+	"encoding/base64"
 	"errors"
 	"fmt"
 	"net/url"
 	"time"
 
 	"yovision/sense/internal/device"
+	"yovision/sense/internal/metrics"
 	"yovision/sense/internal/onvif"
 	"yovision/sense/internal/store"
 )
@@ -16,9 +19,11 @@ import (
 const defaultBatchSize = 128
 
 type Repository interface {
-	ListDueReconcile(ctx context.Context, now time.Time, limit int) ([]store.ReconcileCandidate, error)
-	MarkReconciled(ctx context.Context, id string, generation int64, now time.Time) error
-	MarkReconcileFailure(ctx context.Context, id string, failureCount int, nextAttempt time.Time, errorCode string, now time.Time) error
+	ClaimDueReconcile(context.Context, store.ReconcileClaim) ([]store.ReconcileCandidate, error)
+	RenewReconcileLease(context.Context, string, string, string, time.Time, time.Duration) (bool, error)
+	CompleteReconcile(context.Context, string, int64, string, string, time.Time) error
+	FailReconcile(context.Context, string, int, time.Time, string, string, string, time.Time) error
+	ConvergenceSnapshot(context.Context) (store.ConvergenceSnapshot, error)
 }
 
 type MediaPaths interface {
@@ -34,41 +39,127 @@ type Reconciler struct {
 	baseBackoff      time.Duration
 	maxBackoff       time.Duration
 	batchSize        int
+	instanceID       string
+	leaseDuration    time.Duration
+	operationTimeout time.Duration
+	metrics          *metrics.Registry
+}
+
+type Options struct {
+	InstanceID       string
+	LeaseDuration    time.Duration
+	OperationTimeout time.Duration
+	Metrics          *metrics.Registry
 }
 
 func New(repository Repository, discovery onvif.Adapter, media MediaPaths) *Reconciler {
+	return NewWithOptions(repository, discovery, media, Options{})
+}
+
+func NewWithOptions(
+	repository Repository,
+	discovery onvif.Adapter,
+	media MediaPaths,
+	options Options,
+) *Reconciler {
+	if options.InstanceID == "" {
+		options.InstanceID = "single"
+	}
+	if options.LeaseDuration <= 0 {
+		options.LeaseDuration = 30 * time.Second
+	}
+	if options.OperationTimeout <= 0 {
+		options.OperationTimeout = 20 * time.Second
+	}
+	if options.OperationTimeout >= options.LeaseDuration {
+		options.OperationTimeout = options.LeaseDuration / 2
+	}
 	return &Reconciler{
 		repository: repository, discovery: discovery, media: media,
 		now: time.Now, baseBackoff: time.Second, maxBackoff: time.Minute, batchSize: defaultBatchSize,
+		instanceID: options.InstanceID, leaseDuration: options.LeaseDuration,
+		operationTimeout: options.OperationTimeout, metrics: options.Metrics,
 	}
 }
 
-func (r *Reconciler) RunOnce(ctx context.Context) error {
+func (r *Reconciler) RunOnce(ctx context.Context) (runErr error) {
+	started := time.Now()
+	defer func() {
+		if r.metrics != nil {
+			r.metrics.ObserveReconcileRun(runErr, time.Since(started))
+		}
+	}()
 	now := r.now().UTC()
-	candidates, err := r.repository.ListDueReconcile(ctx, now, r.batchSize)
+	token, err := newClaimToken()
 	if err != nil {
-		return fmt.Errorf("list reconciliation candidates: %w", err)
+		return err
+	}
+	candidates, err := r.repository.ClaimDueReconcile(ctx, store.ReconcileClaim{
+		Owner: r.instanceID, Token: token, Now: now,
+		LeaseDuration: r.leaseDuration, Limit: r.batchSize,
+	})
+	if err != nil {
+		return fmt.Errorf("claim reconciliation candidates: %w", err)
 	}
 	var runErrors []error
 	for _, candidate := range candidates {
 		if err := ctx.Err(); err != nil {
 			return err
 		}
-		if err := r.reconcileOne(ctx, candidate, now); err != nil {
+		itemNow := r.now().UTC()
+		renewed, err := r.repository.RenewReconcileLease(
+			ctx, candidate.Device.ID, r.instanceID, token, itemNow, r.leaseDuration,
+		)
+		if err != nil {
+			r.observeItem("error")
+			runErrors = append(runErrors, fmt.Errorf("renew reconcile device lease: %w", err))
+			continue
+		}
+		if !renewed {
+			r.observeItem("lease_lost")
+			continue
+		}
+		itemCtx, cancel := context.WithTimeout(ctx, r.operationTimeout)
+		err = r.reconcileOne(itemCtx, ctx, candidate, itemNow, r.instanceID, token)
+		cancel()
+		if errors.Is(err, store.ErrReconcileLeaseLost) {
+			r.observeItem("lease_lost")
+			continue
+		}
+		if err != nil {
+			r.observeItem("error")
 			runErrors = append(runErrors, fmt.Errorf("reconcile device %s: %w", candidate.Device.ID, err))
+		} else {
+			r.observeItem("success")
+		}
+	}
+	if r.metrics != nil {
+		snapshot, err := r.repository.ConvergenceSnapshot(ctx)
+		if err != nil {
+			runErrors = append(runErrors, fmt.Errorf("read convergence metrics: %w", err))
+		} else {
+			r.metrics.SetConvergence(snapshot.Total, snapshot.Unconverged)
 		}
 	}
 	return errors.Join(runErrors...)
 }
 
-func (r *Reconciler) reconcileOne(ctx context.Context, candidate store.ReconcileCandidate, now time.Time) error {
+func (r *Reconciler) reconcileOne(
+	ctx context.Context,
+	persistCtx context.Context,
+	candidate store.ReconcileCandidate,
+	now time.Time,
+	owner, token string,
+) error {
 	if candidate.Device.DesiredState == device.DesiredDisabled {
 		if err := r.media.DeletePath(ctx, candidate.Device.PathName); err == nil {
-			return r.repository.MarkReconciled(ctx, candidate.Device.ID, candidate.Device.Generation, now)
-		} else if ctx.Err() != nil {
-			return ctx.Err()
+			return r.repository.CompleteReconcile(
+				persistCtx, candidate.Device.ID, candidate.Device.Generation, owner, token, now,
+			)
+		} else if persistCtx.Err() != nil {
+			return persistCtx.Err()
 		} else {
-			return r.persistFailure(ctx, candidate, now, err)
+			return r.persistFailure(persistCtx, candidate, now, owner, token, err)
 		}
 	}
 	result, err := r.discovery.Probe(ctx, onvif.Target{
@@ -81,16 +172,22 @@ func (r *Reconciler) reconcileOne(ctx context.Context, candidate store.Reconcile
 		_, err = r.media.EnsurePath(ctx, candidate.Device.PathName, result.StreamURI)
 	}
 	if err == nil {
-		return r.repository.MarkReconciled(ctx, candidate.Device.ID, candidate.Device.Generation, now)
+		return r.repository.CompleteReconcile(
+			persistCtx, candidate.Device.ID, candidate.Device.Generation, owner, token, now,
+		)
 	}
-	if ctx.Err() != nil {
-		return ctx.Err()
+	if persistCtx.Err() != nil {
+		return persistCtx.Err()
 	}
-	return r.persistFailure(ctx, candidate, now, err)
+	return r.persistFailure(persistCtx, candidate, now, owner, token, err)
 }
 
 func (r *Reconciler) persistFailure(
-	ctx context.Context, candidate store.ReconcileCandidate, now time.Time, err error,
+	ctx context.Context,
+	candidate store.ReconcileCandidate,
+	now time.Time,
+	owner, token string,
+	err error,
 ) error {
 	failureCount := candidate.FailureCount + 1
 	nextAttempt := now.Add(r.backoff(failureCount))
@@ -99,14 +196,28 @@ func (r *Reconciler) persistFailure(
 	if !errors.As(err, &onvifError) {
 		errorCode = "media_error"
 	}
-	if markErr := r.repository.MarkReconcileFailure(
-		ctx, candidate.Device.ID, failureCount, nextAttempt, errorCode, now,
+	if markErr := r.repository.FailReconcile(
+		ctx, candidate.Device.ID, failureCount, nextAttempt, errorCode, owner, token, now,
 	); markErr != nil {
 		return errors.Join(err, fmt.Errorf("persist reconcile failure: %w", markErr))
 	}
 	return err
 }
 
+func (r *Reconciler) observeItem(result string) {
+	if r.metrics != nil {
+		r.metrics.ObserveReconcileItem(result)
+	}
+}
+
+func newClaimToken() (string, error) {
+	value := make([]byte, 18)
+	if _, err := rand.Read(value); err != nil {
+		return "", errors.New("generate reconcile claim token")
+	}
+	return base64.RawURLEncoding.EncodeToString(value), nil
+}
+
 func validateStreamURI(value string) error {
 	parsed, err := url.Parse(value)
 	if err != nil || parsed.Host == "" || (parsed.Scheme != "rtsp" && parsed.Scheme != "rtsps") {

Sense/internal/reconcile/reconciler_test.go

@@ -162,6 +162,86 @@ func TestDisabledDeviceDeletesOnlyItsExactPath(t *testing.T) {
 	}
 }
 
+type lostLeaseRepository struct {
+	completed bool
+	failed    bool
+}
+
+func (r *lostLeaseRepository) ClaimDueReconcile(
+	context.Context,
+	store.ReconcileClaim,
+) ([]store.ReconcileCandidate, error) {
+	return []store.ReconcileCandidate{{Device: device.Device{
+		ID: "camera-lost", DesiredState: device.DesiredEnabled,
+		EndpointRef: "onvif://camera-lost", PathName: "camera-lost", Generation: 1,
+	}}}, nil
+}
+
+func (r *lostLeaseRepository) RenewReconcileLease(
+	context.Context, string, string, string, time.Time, time.Duration,
+) (bool, error) {
+	return false, nil
+}
+
+func (r *lostLeaseRepository) CompleteReconcile(
+	context.Context, string, int64, string, string, time.Time,
+) error {
+	r.completed = true
+	return nil
+}
+
+func (r *lostLeaseRepository) FailReconcile(
+	context.Context, string, int, time.Time, string, string, string, time.Time,
+) error {
+	r.failed = true
+	return nil
+}
+
+func (r *lostLeaseRepository) ConvergenceSnapshot(context.Context) (store.ConvergenceSnapshot, error) {
+	return store.ConvergenceSnapshot{}, nil
+}
+
+func TestLostLeaseSkipsAllExternalAndStoreMutations(t *testing.T) {
+	t.Parallel()
+	repository := &lostLeaseRepository{}
+	media := &recordingMedia{}
+	reconciler := New(repository, onvif.NewFake(nil), media)
+	if err := reconciler.RunOnce(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+	if media.calls != 0 || repository.completed || repository.failed {
+		t.Fatalf("lost lease performed a side effect: media=%d completed=%v failed=%v",
+			media.calls, repository.completed, repository.failed)
+	}
+}
+
+func TestPerItemTimeoutPersistsRetryWhenParentIsAlive(t *testing.T) {
+	t.Parallel()
+	repository := openRepository(t, filepath.Join(t.TempDir(), "sense.db"))
+	createReconcileDevice(t, repository)
+	discovery := onvif.NewFake(map[string]onvif.FakeScenario{
+		"onvif://camera-1": {
+			DelayMillis: 100,
+			Result:      onvif.ProbeResult{StreamURI: "rtsp://media.invalid/camera-1"},
+		},
+	})
+	reconciler := NewWithOptions(repository, discovery, &recordingMedia{}, Options{
+		InstanceID: "ins_test", LeaseDuration: time.Second, OperationTimeout: 5 * time.Millisecond,
+	})
+	now := time.Date(2026, 8, 7, 0, 0, 0, 0, time.UTC)
+	reconciler.now = func() time.Time { return now }
+	if err := reconciler.RunOnce(context.Background()); err == nil {
+		t.Fatal("expected bounded operation timeout")
+	}
+	candidates, err := repository.ListDueReconcile(context.Background(), now.Add(time.Hour), 1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(candidates) != 1 || candidates[0].FailureCount != 1 {
+		t.Fatalf("operation timeout did not persist retry state: %+v", candidates)
+	}
+}
+
 func openRepository(t *testing.T, path string) *store.SQLite {
 	t.Helper()
 	repository, err := store.OpenSQLite(context.Background(), "file:"+filepath.ToSlash(path))

Sense/internal/store/audit_relay_postgres.go

@@ -0,0 +1,176 @@
+package store
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"regexp"
+	"strings"
+	"time"
+
+	"yovision/sense/internal/auditrelay"
+)
+
+var relayErrorCode = regexp.MustCompile(`^[a-z][a-z0-9_]{0,63}$`)
+
+func (s *Postgres) AuditRelayReady(ctx context.Context) error {
+	var version int64
+	if err := s.db.QueryRowContext(ctx, `SELECT COALESCE(MAX(version), 0) FROM sense.schema_migrations`).Scan(&version); err != nil || version < 6 {
+		return errors.New("postgres Sense schema migration v6 is required for audit relay")
+	}
+	var canUseOutbox, canReadBell, canWriteBell bool
+	if err := s.db.QueryRowContext(ctx, `SELECT
+		has_table_privilege(current_user, 'sense.device_operation_outbox', 'SELECT,INSERT,UPDATE,DELETE'),
+		has_table_privilege(current_user, 'bell.audit_events', 'SELECT'),
+		has_table_privilege(current_user, 'bell.audit_events', 'INSERT,UPDATE,DELETE')`).Scan(
+		&canUseOutbox, &canReadBell, &canWriteBell,
+	); err != nil {
+		return errors.New("verify audit relay privileges")
+	}
+	if !canUseOutbox || canReadBell || canWriteBell {
+		return errors.New("Sense audit relay violates schema ownership boundary")
+	}
+	return nil
+}
+
+func (s *Postgres) ClaimAuditRelayBatch(
+	ctx context.Context,
+	owner string,
+	limit int,
+	lease time.Duration,
+) ([]auditrelay.QueuedEvent, error) {
+	if strings.TrimSpace(owner) == "" || limit < 1 || limit > auditrelay.MaxBatchSize || lease <= 0 {
+		return nil, errors.New("invalid audit relay claim")
+	}
+	rows, err := s.db.QueryContext(ctx, `WITH due AS (
+		SELECT event_id FROM sense.device_operation_outbox
+		WHERE delivered_at IS NULL AND dead_lettered_at IS NULL
+			AND COALESCE(next_attempt_at, available_at) <= clock_timestamp()
+			AND (relay_lease_until IS NULL OR relay_lease_until <= clock_timestamp())
+		ORDER BY COALESCE(next_attempt_at, available_at), event_id
+		FOR UPDATE SKIP LOCKED LIMIT $1
+	)
+	UPDATE sense.device_operation_outbox AS outbox SET
+		relay_lease_owner = $2,
+		relay_lease_token = outbox.relay_lease_token + 1,
+		relay_lease_until = clock_timestamp() + ($3 * interval '1 second'),
+		attempt_count = outbox.attempt_count + 1,
+		last_error_code = NULL
+	FROM due WHERE outbox.event_id = due.event_id
+	RETURNING outbox.event_id, outbox.event_type, outbox.tenant_id,
+		outbox.site_id, outbox.device_id, outbox.actor_type, outbox.actor_id,
+		outbox.reason, outbox.trace_id, outbox.aggregate_generation,
+		outbox.quota_source_version, outbox.area_policy_source_version,
+		outbox.payload, outbox.occurred_at, outbox.relay_lease_token,
+		outbox.attempt_count`, limit, owner, lease.Seconds())
+	if err != nil {
+		return nil, errors.New("claim audit relay batch")
+	}
+	defer rows.Close()
+	values := make([]auditrelay.QueuedEvent, 0)
+	for rows.Next() {
+		var value auditrelay.QueuedEvent
+		var reason, trace sql.NullString
+		var quota, area sql.NullInt64
+		var payload []byte
+		if err := rows.Scan(
+			&value.Event.EventID, &value.Event.EventType, &value.Event.TenantID,
+			&value.Event.SiteID, &value.Event.DeviceID, &value.Event.Actor.Type,
+			&value.Event.Actor.ID, &reason, &trace, &value.Event.AggregateGeneration,
+			&quota, &area, &payload, &value.Event.OccurredAt, &value.LeaseToken,
+			&value.AttemptCount,
+		); err != nil {
+			return nil, errors.New("scan audit relay claim")
+		}
+		if reason.Valid {
+			value.Event.Reason = &reason.String
+		}
+		if trace.Valid {
+			value.Event.TraceID = &trace.String
+		}
+		if quota.Valid {
+			value.Event.ProjectionVersions.QuotaSourceVersion = &quota.Int64
+		}
+		if area.Valid {
+			value.Event.ProjectionVersions.AreaPolicySourceVersion = &area.Int64
+		}
+		if !json.Valid(payload) {
+			return nil, errors.New("invalid audit payload in outbox")
+		}
+		value.Event.Data = append(json.RawMessage(nil), payload...)
+		value.SchemaVersion = 1
+		if value.Event.EventType == "device.configuration.accepted" {
+			value.SchemaVersion = 2
+		}
+		values = append(values, value)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, errors.New("iterate audit relay claims")
+	}
+	return values, nil
+}
+
+func (s *Postgres) CompleteAuditRelayBatch(
+	ctx context.Context,
+	owner string,
+	values []auditrelay.Completion,
+) error {
+	if strings.TrimSpace(owner) == "" || len(values) == 0 || len(values) > auditrelay.MaxBatchSize {
+		return errors.New("invalid audit relay completion")
+	}
+	tx, err := s.db.BeginTx(ctx, nil)
+	if err != nil {
+		return errors.New("begin audit relay completion")
+	}
+	defer tx.Rollback()
+	for _, value := range values {
+		code := value.ErrorCode
+		if code != "" && !relayErrorCode.MatchString(code) {
+			code = "invalid_response"
+		}
+		var result sql.Result
+		switch value.Disposition {
+		case auditrelay.Delivered:
+			result, err = tx.ExecContext(ctx, `UPDATE sense.device_operation_outbox SET
+				delivered_at = clock_timestamp(), last_error_code = NULL,
+				relay_lease_owner = NULL, relay_lease_until = NULL
+			WHERE event_id = $1 AND relay_lease_owner = $2 AND relay_lease_token = $3
+				AND relay_lease_until > clock_timestamp()`, value.EventID, owner, value.LeaseToken)
+		case auditrelay.DeadLetter:
+			if code == "" {
+				return errors.New("dead-letter completion requires an error code")
+			}
+			result, err = tx.ExecContext(ctx, `UPDATE sense.device_operation_outbox SET
+				dead_lettered_at = clock_timestamp(), last_error_code = $4,
+				relay_lease_owner = NULL, relay_lease_until = NULL
+			WHERE event_id = $1 AND relay_lease_owner = $2 AND relay_lease_token = $3
+				AND relay_lease_until > clock_timestamp()`, value.EventID, owner, value.LeaseToken, code)
+		case auditrelay.Retry:
+			if code == "" || value.RetryAfter < time.Second || value.RetryAfter > 300*time.Second {
+				return errors.New("invalid audit relay retry completion")
+			}
+			result, err = tx.ExecContext(ctx, `UPDATE sense.device_operation_outbox SET
+				next_attempt_at = clock_timestamp() + ($4 * interval '1 second'),
+				last_error_code = $5, relay_lease_owner = NULL, relay_lease_until = NULL
+			WHERE event_id = $1 AND relay_lease_owner = $2 AND relay_lease_token = $3
+				AND relay_lease_until > clock_timestamp()`, value.EventID, owner, value.LeaseToken, value.RetryAfter.Seconds(), code)
+		default:
+			return errors.New("invalid audit relay disposition")
+		}
+		if err != nil {
+			return errors.New("persist audit relay completion")
+		}
+		affected, err := result.RowsAffected()
+		if err != nil {
+			return errors.New("read audit relay completion")
+		}
+		if affected != 1 {
+			return auditrelay.ErrLeaseLost
+		}
+	}
+	if err := tx.Commit(); err != nil {
+		return errors.New("commit audit relay completion")
+	}
+	return nil
+}

Sense/internal/store/audit_relay_postgres_test.go

@@ -0,0 +1,45 @@
+package store
+
+import (
+	"context"
+	"errors"
+	"testing"
+	"time"
+
+	"yovision/sense/internal/auditrelay"
+)
+
+func TestPostgresAuditRelayClaimUsesFencing(t *testing.T) {
+	repository, admin := openPostgresTestStore(t)
+	ctx := context.Background()
+	if err := repository.AuditRelayReady(ctx); err != nil {
+		t.Fatal(err)
+	}
+	insertBellSite(t, admin, "relay-tenant", "relay-site", 1)
+	device := videoDevice(9001, "relay-tenant", "relay-site")
+	if err := repository.CreateDevice(ctx, device); err != nil {
+		t.Fatal(err)
+	}
+	first, err := repository.ClaimAuditRelayBatch(ctx, "worker-a", 100, 30*time.Second)
+	if err != nil || len(first) != 1 || first[0].SchemaVersion != 1 || first[0].AttemptCount != 1 {
+		t.Fatalf("first claim: %+v %v", first, err)
+	}
+	if _, err := admin.ExecContext(ctx, `UPDATE sense.device_operation_outbox SET relay_lease_until=clock_timestamp()-interval '1 second' WHERE event_id=$1`, first[0].Event.EventID); err != nil {
+		t.Fatal(err)
+	}
+	second, err := repository.ClaimAuditRelayBatch(ctx, "worker-b", 100, 30*time.Second)
+	if err != nil || len(second) != 1 || second[0].LeaseToken <= first[0].LeaseToken {
+		t.Fatalf("reclaim: %+v %v", second, err)
+	}
+	err = repository.CompleteAuditRelayBatch(ctx, "worker-a", []auditrelay.Completion{{EventID: first[0].Event.EventID, LeaseToken: first[0].LeaseToken, Disposition: auditrelay.Delivered}})
+	if !errors.Is(err, auditrelay.ErrLeaseLost) {
+		t.Fatalf("stale worker completion returned %v", err)
+	}
+	if err := repository.CompleteAuditRelayBatch(ctx, "worker-b", []auditrelay.Completion{{EventID: second[0].Event.EventID, LeaseToken: second[0].LeaseToken, Disposition: auditrelay.Delivered}}); err != nil {
+		t.Fatal(err)
+	}
+	var delivered bool
+	if err := admin.QueryRowContext(ctx, `SELECT delivered_at IS NOT NULL FROM sense.device_operation_outbox WHERE event_id=$1`, first[0].Event.EventID).Scan(&delivered); err != nil || !delivered {
+		t.Fatalf("delivered=%v err=%v", delivered, err)
+	}
+}

Sense/internal/store/control_postgres.go

@@ -514,6 +514,7 @@ func (s *Postgres) PatchControlDevice(
 		if reconcileChanged {
 			if _, err := tx.ExecContext(ctx, `UPDATE sense.reconcile_state SET
 				failure_count = 0, next_attempt_at = NULL, last_error_code = NULL,
+				lease_owner = NULL, lease_token = NULL, lease_until = NULL,
 				updated_at = $1 WHERE device_id = $2`, now, deviceID); err != nil {
 				return ControlMutationResult{}, errors.New("reset postgres Control API reconcile state")
 			}
@@ -631,6 +632,7 @@ func setControlDesiredStateTx(
 		}
 		if _, err := tx.ExecContext(ctx, `UPDATE sense.reconcile_state SET
 			failure_count = 0, next_attempt_at = NULL, last_error_code = NULL,
+			lease_owner = NULL, lease_token = NULL, lease_until = NULL,
 			updated_at = $1 WHERE device_id = $2`, now, deviceID); err != nil {
 			return ControlDevice{}, errors.New("reset postgres Control API desired-state reconciliation")
 		}

Sense/internal/store/orphan.go

@@ -0,0 +1,58 @@
+package store
+
+import (
+	"context"
+	"errors"
+	"time"
+)
+
+const (
+	OperationalLeaseOrphanScan    = "mediamtx-orphan-scan"
+	OperationalLeaseOrphanCleanup = "mediamtx-orphan-cleanup"
+
+	OrphanOwnedStale = "owned_stale"
+	OrphanUnowned    = "unowned"
+)
+
+var ErrOrphanScanNotFound = errors.New("orphan scan not found")
+
+type MediaPathOwnership struct {
+	PathName     string
+	DeviceID     string
+	CurrentClaim bool
+}
+
+type OrphanFinding struct {
+	PathName       string
+	Classification string
+	DeviceID       string
+	Deleted        bool
+}
+
+type OrphanScan struct {
+	ID              string
+	InstanceID      string
+	ObservedCount   int
+	OwnedStaleCount int
+	UnownedCount    int
+	SafetyAllowed   bool
+	SafetyReason    string
+	CompletedAt     time.Time
+	ExpiresAt       time.Time
+	Findings        []OrphanFinding
+}
+
+type OrphanRepository interface {
+	AcquireOperationalLease(
+		context.Context, string, string, string, time.Time, time.Duration,
+	) (bool, error)
+	ReleaseOperationalLease(context.Context, string, string, string, time.Time) error
+	ListMediaPathOwnership(context.Context) ([]MediaPathOwnership, error)
+	SaveOrphanScan(context.Context, OrphanScan, string, string) error
+	GetOrphanScan(context.Context, string) (OrphanScan, error)
+	RecordOrphanCleanup(
+		context.Context, string, string, string, string, string, time.Time,
+	) error
+}
+
+var _ OrphanRepository = (*Postgres)(nil)

Sense/internal/store/orphan_postgres.go

@@ -0,0 +1,268 @@
+package store
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+	"strings"
+	"time"
+)
+
+const orphanReportRetention = 7 * 24 * time.Hour
+
+func (s *Postgres) AcquireOperationalLease(
+	ctx context.Context,
+	name, owner, token string,
+	_ time.Time,
+	duration time.Duration,
+) (bool, error) {
+	if strings.TrimSpace(name) == "" || strings.TrimSpace(owner) == "" ||
+		strings.TrimSpace(token) == "" || duration <= 0 {
+		return false, errors.New("invalid operational lease")
+	}
+	var acquired int
+	err := s.db.QueryRowContext(ctx, `INSERT INTO sense.operational_leases(
+		lease_name, owner_id, fencing_token, lease_until, updated_at
+	) VALUES (
+		$1, $2, $3,
+		clock_timestamp() + ($4 * interval '1 second'), clock_timestamp()
+	)
+	ON CONFLICT (lease_name) DO UPDATE SET
+		owner_id = EXCLUDED.owner_id,
+		fencing_token = EXCLUDED.fencing_token,
+		lease_until = EXCLUDED.lease_until,
+		updated_at = EXCLUDED.updated_at
+	WHERE sense.operational_leases.lease_until <= clock_timestamp()
+		OR (sense.operational_leases.owner_id = $2
+			AND sense.operational_leases.fencing_token = $3)
+	RETURNING 1`, name, owner, token, duration.Seconds()).Scan(&acquired)
+	if errors.Is(err, sql.ErrNoRows) {
+		return false, nil
+	}
+	if err != nil {
+		return false, errors.New("acquire postgres operational lease")
+	}
+	return acquired == 1, nil
+}
+
+func (s *Postgres) ReleaseOperationalLease(
+	ctx context.Context,
+	name, owner, token string,
+	_ time.Time,
+) error {
+	_, err := s.db.ExecContext(ctx, `UPDATE sense.operational_leases
+		SET lease_until = clock_timestamp(), updated_at = clock_timestamp()
+		WHERE lease_name = $1 AND owner_id = $2 AND fencing_token = $3`,
+		name, owner, token)
+	if err != nil {
+		return errors.New("release postgres operational lease")
+	}
+	return nil
+}
+
+func (s *Postgres) ListMediaPathOwnership(ctx context.Context) ([]MediaPathOwnership, error) {
+	rows, err := s.db.QueryContext(ctx, `SELECT
+		o.path_name, o.device_id,
+		EXISTS (
+			SELECT 1 FROM sense.devices d
+			WHERE d.id = o.device_id AND d.path_name = o.path_name
+				AND EXISTS (
+					SELECT 1 FROM sense.device_capabilities c
+					WHERE c.device_id = d.id AND c.capability = 'video_capture'
+				)
+		) AS current_claim
+		FROM sense.media_path_ownership o
+		ORDER BY o.path_name`)
+	if err != nil {
+		return nil, errors.New("list postgres MediaMTX path ownership")
+	}
+	defer rows.Close()
+	values := make([]MediaPathOwnership, 0)
+	for rows.Next() {
+		var value MediaPathOwnership
+		if err := rows.Scan(&value.PathName, &value.DeviceID, &value.CurrentClaim); err != nil {
+			return nil, errors.New("scan postgres MediaMTX path ownership")
+		}
+		values = append(values, value)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, errors.New("iterate postgres MediaMTX path ownership")
+	}
+	return values, nil
+}
+
+func (s *Postgres) SaveOrphanScan(
+	ctx context.Context,
+	scan OrphanScan,
+	owner, token string,
+) error {
+	if err := validateOrphanScan(scan); err != nil {
+		return err
+	}
+	tx, err := s.db.BeginTx(ctx, nil)
+	if err != nil {
+		return errors.New("begin postgres orphan scan save")
+	}
+	defer tx.Rollback()
+	var lease int
+	err = tx.QueryRowContext(ctx, `SELECT 1 FROM sense.operational_leases
+		WHERE lease_name = $1 AND owner_id = $2 AND fencing_token = $3
+			AND lease_until > clock_timestamp()
+		FOR UPDATE`, OperationalLeaseOrphanScan, owner, token).Scan(&lease)
+	if errors.Is(err, sql.ErrNoRows) {
+		return ErrOperationalLeaseLost
+	}
+	if err != nil {
+		return errors.New("verify postgres orphan scan lease")
+	}
+	if _, err := tx.ExecContext(ctx, `INSERT INTO sense.orphan_scan_runs(
+		id, instance_id, observed_count, owned_stale_count, unowned_count,
+		safety_allowed, safety_reason, completed_at, expires_at
+	) VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9)`,
+		scan.ID, scan.InstanceID, scan.ObservedCount, scan.OwnedStaleCount, scan.UnownedCount,
+		scan.SafetyAllowed, scan.SafetyReason, scan.CompletedAt, scan.ExpiresAt,
+	); err != nil {
+		return errors.New("insert postgres orphan scan")
+	}
+	for _, finding := range scan.Findings {
+		var deviceID any
+		if finding.DeviceID != "" {
+			deviceID = finding.DeviceID
+		}
+		if _, err := tx.ExecContext(ctx, `INSERT INTO sense.orphan_scan_findings(
+			scan_id, path_name, classification, device_id
+		) VALUES ($1,$2,$3,$4)`, scan.ID, finding.PathName, finding.Classification, deviceID); err != nil {
+			return errors.New("insert postgres orphan scan finding")
+		}
+	}
+	if _, err := tx.ExecContext(ctx, `UPDATE sense.operational_leases
+		SET lease_until = clock_timestamp(), updated_at = clock_timestamp()
+		WHERE lease_name = $1 AND owner_id = $2 AND fencing_token = $3`,
+		OperationalLeaseOrphanScan, owner, token); err != nil {
+		return errors.New("release postgres orphan scan lease")
+	}
+	if _, err := tx.ExecContext(ctx, `DELETE FROM sense.orphan_scan_runs r
+		WHERE r.completed_at < $1
+			AND NOT EXISTS (
+				SELECT 1 FROM sense.orphan_cleanup_actions a WHERE a.scan_id = r.id
+			)`, scan.CompletedAt.Add(-orphanReportRetention)); err != nil {
+		return errors.New("expire postgres orphan scan reports")
+	}
+	if err := tx.Commit(); err != nil {
+		return errors.New("commit postgres orphan scan")
+	}
+	return nil
+}
+
+func validateOrphanScan(scan OrphanScan) error {
+	if strings.TrimSpace(scan.ID) == "" || strings.TrimSpace(scan.InstanceID) == "" ||
+		scan.ObservedCount < 0 || scan.OwnedStaleCount < 0 || scan.UnownedCount < 0 ||
+		scan.OwnedStaleCount+scan.UnownedCount > scan.ObservedCount ||
+		strings.TrimSpace(scan.SafetyReason) == "" || !scan.ExpiresAt.After(scan.CompletedAt) {
+		return errors.New("invalid orphan scan")
+	}
+	seen := make(map[string]struct{}, len(scan.Findings))
+	staleCount, unownedCount := 0, 0
+	for _, finding := range scan.Findings {
+		if strings.TrimSpace(finding.PathName) == "" {
+			return errors.New("invalid orphan finding path")
+		}
+		if _, duplicate := seen[finding.PathName]; duplicate {
+			return errors.New("duplicate orphan finding path")
+		}
+		seen[finding.PathName] = struct{}{}
+		switch finding.Classification {
+		case OrphanOwnedStale:
+			staleCount++
+			if strings.TrimSpace(finding.DeviceID) == "" {
+				return errors.New("owned stale finding lacks device")
+			}
+		case OrphanUnowned:
+			unownedCount++
+			if finding.DeviceID != "" {
+				return errors.New("unowned finding has device")
+			}
+		default:
+			return fmt.Errorf("invalid orphan finding classification %q", finding.Classification)
+		}
+	}
+	if staleCount != scan.OwnedStaleCount || unownedCount != scan.UnownedCount {
+		return errors.New("orphan scan counts do not match findings")
+	}
+	return nil
+}
+
+func (s *Postgres) GetOrphanScan(ctx context.Context, id string) (OrphanScan, error) {
+	var scan OrphanScan
+	err := s.db.QueryRowContext(ctx, `SELECT
+		id, instance_id, observed_count, owned_stale_count, unowned_count,
+		safety_allowed, safety_reason, completed_at, expires_at
+		FROM sense.orphan_scan_runs WHERE id = $1`, id).Scan(
+		&scan.ID, &scan.InstanceID, &scan.ObservedCount, &scan.OwnedStaleCount,
+		&scan.UnownedCount, &scan.SafetyAllowed, &scan.SafetyReason,
+		&scan.CompletedAt, &scan.ExpiresAt,
+	)
+	if errors.Is(err, sql.ErrNoRows) {
+		return OrphanScan{}, ErrOrphanScanNotFound
+	}
+	if err != nil {
+		return OrphanScan{}, errors.New("read postgres orphan scan")
+	}
+	rows, err := s.db.QueryContext(ctx, `SELECT
+		f.path_name, f.classification, COALESCE(f.device_id, ''),
+		COALESCE(a.status = 'deleted', false)
+		FROM sense.orphan_scan_findings f
+		LEFT JOIN sense.orphan_cleanup_actions a
+			ON a.scan_id = f.scan_id AND a.path_name = f.path_name
+		WHERE f.scan_id = $1 ORDER BY f.path_name`, id)
+	if err != nil {
+		return OrphanScan{}, errors.New("list postgres orphan scan findings")
+	}
+	defer rows.Close()
+	scan.Findings = make([]OrphanFinding, 0)
+	for rows.Next() {
+		var finding OrphanFinding
+		if err := rows.Scan(
+			&finding.PathName, &finding.Classification, &finding.DeviceID, &finding.Deleted,
+		); err != nil {
+			return OrphanScan{}, errors.New("scan postgres orphan finding")
+		}
+		scan.Findings = append(scan.Findings, finding)
+	}
+	if err := rows.Err(); err != nil {
+		return OrphanScan{}, errors.New("iterate postgres orphan findings")
+	}
+	return scan, nil
+}
+
+func (s *Postgres) RecordOrphanCleanup(
+	ctx context.Context,
+	scanID, pathName, actorID, status, errorCode string,
+	now time.Time,
+) error {
+	if status != "deleted" && status != "failed" {
+		return errors.New("invalid orphan cleanup status")
+	}
+	var storedError any
+	if status == "failed" {
+		if strings.TrimSpace(errorCode) == "" {
+			return errors.New("failed orphan cleanup requires an error code")
+		}
+		storedError = errorCode
+	}
+	_, err := s.db.ExecContext(ctx, `INSERT INTO sense.orphan_cleanup_actions(
+		scan_id, path_name, classification, actor_id, status, error_code, attempted_at
+	) VALUES ($1,$2,'owned_stale',$3,$4,$5,$6)
+	ON CONFLICT (scan_id, path_name) DO UPDATE SET
+		actor_id = EXCLUDED.actor_id,
+		status = EXCLUDED.status,
+		error_code = EXCLUDED.error_code,
+		attempted_at = EXCLUDED.attempted_at
+	WHERE sense.orphan_cleanup_actions.status <> 'deleted'`,
+		scanID, pathName, actorID, status, storedError, now)
+	if err != nil {
+		return errors.New("record postgres orphan cleanup result")
+	}
+	return nil
+}

Sense/internal/store/postgres.go

@@ -53,8 +53,8 @@ func (s *Postgres) Close() error {
 func (s *Postgres) verifySchemaAndPrivileges(ctx context.Context) error {
 	var version sql.NullInt64
 	if err := s.db.QueryRowContext(ctx,
-		`SELECT MAX(version) FROM sense.schema_migrations`).Scan(&version); err != nil || !version.Valid || version.Int64 < 4 {
-		return errors.New("postgres sense schema migration v4 is required")
+		`SELECT MAX(version) FROM sense.schema_migrations`).Scan(&version); err != nil || !version.Valid || version.Int64 < 5 {
+		return errors.New("postgres sense schema migration v5 is required")
 	}
 	var canReadQuotaView, canWriteQuotaView, canReadSiteSource, canWriteSiteSource bool
 	var canReadAreaView, canWriteAreaView, canReadAreaSource, canWriteAreaSource bool
@@ -95,6 +95,28 @@ func (s *Postgres) verifySchemaAndPrivileges(ctx context.Context) error {
 		publicReceipts || publicOperations || publicOperationItems {
 		return errors.New("postgres role violates Control API state privilege boundary")
 	}
+	var canUseOwnership, canUseLeases, canUseScans, canUseFindings, canUseActions bool
+	var publicOwnership, publicLeases, publicScans, publicFindings, publicActions bool
+	if err := s.db.QueryRowContext(ctx, `SELECT
+		has_table_privilege(current_user, 'sense.media_path_ownership', 'SELECT,INSERT,UPDATE,DELETE'),
+		has_table_privilege(current_user, 'sense.operational_leases', 'SELECT,INSERT,UPDATE,DELETE'),
+		has_table_privilege(current_user, 'sense.orphan_scan_runs', 'SELECT,INSERT,UPDATE,DELETE'),
+		has_table_privilege(current_user, 'sense.orphan_scan_findings', 'SELECT,INSERT,UPDATE,DELETE'),
+		has_table_privilege(current_user, 'sense.orphan_cleanup_actions', 'SELECT,INSERT,UPDATE,DELETE'),
+		has_table_privilege('public', 'sense.media_path_ownership', 'SELECT,INSERT,UPDATE,DELETE'),
+		has_table_privilege('public', 'sense.operational_leases', 'SELECT,INSERT,UPDATE,DELETE'),
+		has_table_privilege('public', 'sense.orphan_scan_runs', 'SELECT,INSERT,UPDATE,DELETE'),
+		has_table_privilege('public', 'sense.orphan_scan_findings', 'SELECT,INSERT,UPDATE,DELETE'),
+		has_table_privilege('public', 'sense.orphan_cleanup_actions', 'SELECT,INSERT,UPDATE,DELETE')`).Scan(
+		&canUseOwnership, &canUseLeases, &canUseScans, &canUseFindings, &canUseActions,
+		&publicOwnership, &publicLeases, &publicScans, &publicFindings, &publicActions,
+	); err != nil {
+		return errors.New("verify postgres reconciliation safety privileges")
+	}
+	if !canUseOwnership || !canUseLeases || !canUseScans || !canUseFindings || !canUseActions ||
+		publicOwnership || publicLeases || publicScans || publicFindings || publicActions {
+		return errors.New("postgres role violates reconciliation safety privilege boundary")
+	}
 	return nil
 }
 
@@ -391,7 +413,8 @@ func (s *Postgres) SetDesiredState(ctx context.Context, id string, desired devic
 		return errors.New("update postgres desired state")
 	}
 	if _, err := tx.ExecContext(ctx, `UPDATE sense.reconcile_state SET
-		failure_count = 0, next_attempt_at = NULL, last_error_code = NULL, updated_at = $1
+		failure_count = 0, next_attempt_at = NULL, last_error_code = NULL,
+		lease_owner = NULL, lease_token = NULL, lease_until = NULL, updated_at = $1
 		WHERE device_id = $2`, now, id); err != nil {
 		return errors.New("reset postgres reconcile state")
 	}
@@ -486,6 +509,217 @@ func (s *Postgres) ListDueReconcile(ctx context.Context, now time.Time, limit in
 	return values, nil
 }
 
+func (s *Postgres) ClaimDueReconcile(
+	ctx context.Context,
+	claim ReconcileClaim,
+) ([]ReconcileCandidate, error) {
+	if claim.Limit <= 0 {
+		return nil, nil
+	}
+	if strings.TrimSpace(claim.Owner) == "" || strings.TrimSpace(claim.Token) == "" ||
+		claim.LeaseDuration <= 0 {
+		return nil, errors.New("invalid postgres reconcile claim")
+	}
+	tx, err := s.db.BeginTx(ctx, nil)
+	if err != nil {
+		return nil, errors.New("begin postgres reconcile claim")
+	}
+	defer tx.Rollback()
+	rows, err := tx.QueryContext(ctx, `SELECT `+postgresDeviceColumns+`, r.failure_count, r.next_attempt_at
+		FROM sense.devices d
+		JOIN sense.reconcile_state r ON r.device_id = d.id
+		WHERE EXISTS (SELECT 1 FROM sense.device_capabilities c
+				WHERE c.device_id = d.id AND c.capability = 'video_capture')
+			AND (r.observed_generation < d.generation
+				OR (d.desired_state = 'enabled' AND r.failure_count > 0))
+			AND (r.next_attempt_at IS NULL OR r.next_attempt_at <= clock_timestamp())
+			AND (r.lease_until IS NULL OR r.lease_until <= clock_timestamp())
+		ORDER BY d.updated_at, d.id
+		FOR UPDATE OF r SKIP LOCKED
+		LIMIT $1`, claim.Limit)
+	if err != nil {
+		return nil, errors.New("select postgres reconcile claims")
+	}
+	values := make([]ReconcileCandidate, 0)
+	for rows.Next() {
+		var candidate ReconcileCandidate
+		var areaID sql.NullString
+		var quotaVersion, areaVersion sql.NullInt64
+		var nextAttempt sql.NullTime
+		if err := rows.Scan(
+			&candidate.Device.ID, &candidate.Device.TenantID, &candidate.Device.SiteID,
+			&areaID, &candidate.Device.SerialNumber, &candidate.Device.Name, &candidate.Device.Modality,
+			&candidate.Device.DesiredState, &candidate.Device.ActualState,
+			&candidate.Device.EndpointRef, &candidate.Device.CredentialRef,
+			&candidate.Device.ProfileToken, &candidate.Device.PathName,
+			&candidate.Device.Generation, &candidate.Device.ResourceVersion,
+			&quotaVersion, &areaVersion,
+			&candidate.Device.CreatedAt, &candidate.Device.UpdatedAt,
+			&candidate.FailureCount, &nextAttempt,
+		); err != nil {
+			rows.Close()
+			return nil, errors.New("scan postgres reconcile claim")
+		}
+		candidate.Device.AreaID = areaID.String
+		candidate.Device.QuotaSourceVersion = quotaVersion.Int64
+		candidate.Device.AreaPolicySourceVersion = areaVersion.Int64
+		if nextAttempt.Valid {
+			value := nextAttempt.Time
+			candidate.NextAttempt = &value
+		}
+		values = append(values, candidate)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, errors.New("close postgres reconcile claims")
+	}
+	if err := rows.Err(); err != nil {
+		return nil, errors.New("iterate postgres reconcile claims")
+	}
+	for _, candidate := range values {
+		if _, err := tx.ExecContext(ctx, `UPDATE sense.reconcile_state SET
+			lease_owner = $1, lease_token = $2,
+			lease_until = clock_timestamp() + ($3 * interval '1 second'),
+			updated_at = clock_timestamp()
+			WHERE device_id = $4`,
+			claim.Owner, claim.Token, claim.LeaseDuration.Seconds(), candidate.Device.ID,
+		); err != nil {
+			return nil, errors.New("persist postgres reconcile claim")
+		}
+	}
+	if err := tx.Commit(); err != nil {
+		return nil, errors.New("commit postgres reconcile claim")
+	}
+	for index := range values {
+		values[index].Device.Capabilities, err = s.capabilities(ctx, values[index].Device.ID)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return values, nil
+}
+
+func (s *Postgres) RenewReconcileLease(
+	ctx context.Context,
+	id, owner, token string,
+	now time.Time,
+	duration time.Duration,
+) (bool, error) {
+	if strings.TrimSpace(owner) == "" || strings.TrimSpace(token) == "" || duration <= 0 {
+		return false, errors.New("invalid postgres reconcile lease renewal")
+	}
+	result, err := s.db.ExecContext(ctx, `UPDATE sense.reconcile_state SET
+		lease_until = clock_timestamp() + ($1 * interval '1 second'),
+		updated_at = clock_timestamp()
+		WHERE device_id = $2 AND lease_owner = $3 AND lease_token = $4
+			AND lease_until > clock_timestamp()`, duration.Seconds(), id, owner, token)
+	if err != nil {
+		return false, errors.New("renew postgres reconcile lease")
+	}
+	affected, err := result.RowsAffected()
+	if err != nil {
+		return false, errors.New("read postgres reconcile lease renewal")
+	}
+	return affected == 1, nil
+}
+
+func (s *Postgres) CompleteReconcile(
+	ctx context.Context,
+	id string,
+	generation int64,
+	owner, token string,
+	now time.Time,
+) error {
+	tx, err := s.db.BeginTx(ctx, nil)
+	if err != nil {
+		return errors.New("begin postgres fenced reconciliation completion")
+	}
+	defer tx.Rollback()
+	result, err := tx.ExecContext(ctx, `UPDATE sense.reconcile_state SET
+		failure_count = 0, next_attempt_at = NULL, last_error_code = NULL,
+		observed_generation = $1, lease_owner = NULL, lease_token = NULL,
+		lease_until = NULL, updated_at = $2
+		WHERE device_id = $3 AND lease_owner = $4 AND lease_token = $5
+			AND lease_until > clock_timestamp()`, generation, now, id, owner, token)
+	if err != nil {
+		return errors.New("complete postgres fenced reconciliation")
+	}
+	affected, err := result.RowsAffected()
+	if err != nil {
+		return errors.New("read postgres fenced reconciliation completion")
+	}
+	if affected != 1 {
+		return ErrReconcileLeaseLost
+	}
+	if _, err := tx.ExecContext(ctx, `INSERT INTO sense.media_path_ownership(
+		path_name, device_id, tenant_id, site_id, first_claimed_at, last_confirmed_at
+	)
+	SELECT path_name, id, tenant_id, site_id, $1, $1
+	FROM sense.devices
+	WHERE id = $2 AND desired_state = 'enabled' AND btrim(path_name) <> ''
+	ON CONFLICT (path_name) DO UPDATE SET
+		device_id = EXCLUDED.device_id,
+		tenant_id = EXCLUDED.tenant_id,
+		site_id = EXCLUDED.site_id,
+		last_confirmed_at = EXCLUDED.last_confirmed_at`, now, id); err != nil {
+		return errors.New("record postgres MediaMTX path ownership")
+	}
+	result, err = tx.ExecContext(ctx, `UPDATE sense.devices
+		SET actual_state = CASE WHEN desired_state = 'disabled' THEN 'offline' ELSE 'pending' END,
+		updated_at = $1 WHERE id = $2`, now, id)
+	if err != nil {
+		return errors.New("mark postgres fenced device state")
+	}
+	if affected, _ := result.RowsAffected(); affected != 1 {
+		return ErrNotFound
+	}
+	if err := tx.Commit(); err != nil {
+		return errors.New("commit postgres fenced reconciliation completion")
+	}
+	return nil
+}
+
+func (s *Postgres) FailReconcile(
+	ctx context.Context,
+	id string,
+	failureCount int,
+	nextAttempt time.Time,
+	errorCode, owner, token string,
+	now time.Time,
+) error {
+	tx, err := s.db.BeginTx(ctx, nil)
+	if err != nil {
+		return errors.New("begin postgres fenced reconciliation failure")
+	}
+	defer tx.Rollback()
+	result, err := tx.ExecContext(ctx, `UPDATE sense.reconcile_state SET
+		failure_count = $1, next_attempt_at = $2, last_error_code = $3,
+		lease_owner = NULL, lease_token = NULL, lease_until = NULL, updated_at = $4
+		WHERE device_id = $5 AND lease_owner = $6 AND lease_token = $7
+			AND lease_until > clock_timestamp()`, failureCount, nextAttempt, errorCode, now, id, owner, token)
+	if err != nil {
+		return errors.New("persist postgres fenced reconciliation failure")
+	}
+	affected, err := result.RowsAffected()
+	if err != nil {
+		return errors.New("read postgres fenced reconciliation failure")
+	}
+	if affected != 1 {
+		return ErrReconcileLeaseLost
+	}
+	result, err = tx.ExecContext(ctx, `UPDATE sense.devices
+		SET actual_state = 'failed', updated_at = $1 WHERE id = $2`, now, id)
+	if err != nil {
+		return errors.New("mark postgres fenced failed device")
+	}
+	if affected, _ := result.RowsAffected(); affected != 1 {
+		return ErrNotFound
+	}
+	if err := tx.Commit(); err != nil {
+		return errors.New("commit postgres fenced reconciliation failure")
+	}
+	return nil
+}
+
 func (s *Postgres) ListEnabledVideoDevices(ctx context.Context, limit int) ([]device.Device, error) {
 	if limit <= 0 {
 		return nil, nil

Sense/internal/store/postgres_test.go

@@ -287,12 +287,12 @@ func TestPostgresOpenRejectsOverprivilegedRuntimeRole(t *testing.T) {
 	_, admin := openPostgresTestStore(t)
 	ctx := context.Background()
 	if _, err := admin.ExecContext(ctx,
-		`GRANT UPDATE ON bell.site_quota_v1 TO yovision_t011_sense`); err != nil {
+		`GRANT UPDATE ON bell.site_quota_v1 TO yovision_t012_sense`); err != nil {
 		t.Fatal(err)
 	}
 	defer func() {
 		_, _ = admin.ExecContext(context.Background(),
-			`REVOKE UPDATE ON bell.site_quota_v1 FROM yovision_t011_sense`)
+			`REVOKE UPDATE ON bell.site_quota_v1 FROM yovision_t012_sense`)
 	}()
 	value, err := OpenPostgres(ctx, os.Getenv(postgresTestDSNEnv))
 	if value != nil {
@@ -304,6 +304,27 @@ func TestPostgresOpenRejectsOverprivilegedRuntimeRole(t *testing.T) {
 	}
 }
 
+func TestPostgresOpenRejectsPublicReconciliationStatePrivilege(t *testing.T) {
+	_, admin := openPostgresTestStore(t)
+	ctx := context.Background()
+	if _, err := admin.ExecContext(ctx,
+		`GRANT SELECT ON sense.orphan_scan_runs TO PUBLIC`); err != nil {
+		t.Fatal(err)
+	}
+	defer func() {
+		_, _ = admin.ExecContext(context.Background(),
+			`REVOKE SELECT ON sense.orphan_scan_runs FROM PUBLIC`)
+	}()
+	value, err := OpenPostgres(ctx, os.Getenv(postgresTestDSNEnv))
+	if value != nil {
+		_ = value.Close()
+		t.Fatal("PUBLIC reconciliation state privilege was accepted")
+	}
+	if err == nil || !strings.Contains(err.Error(), "reconciliation safety privilege boundary") {
+		t.Fatalf("expected reconciliation privilege-boundary error, got %v", err)
+	}
+}
+
 func TestPostgresAreaPolicyAllowsNonImagingAndDeniesImagingCreate(t *testing.T) {
 	store, admin := openPostgresTestStore(t)
 	ctx := context.Background()
@@ -597,12 +618,12 @@ func TestPostgresOpenRejectsAreaSourcePrivilege(t *testing.T) {
 	_, admin := openPostgresTestStore(t)
 	ctx := context.Background()
 	if _, err := admin.ExecContext(ctx,
-		`GRANT SELECT ON bell.areas TO yovision_t011_sense`); err != nil {
+		`GRANT SELECT ON bell.areas TO yovision_t012_sense`); err != nil {
 		t.Fatal(err)
 	}
 	defer func() {
 		_, _ = admin.ExecContext(context.Background(),
-			`REVOKE SELECT ON bell.areas FROM yovision_t011_sense`)
+			`REVOKE SELECT ON bell.areas FROM yovision_t012_sense`)
 	}()
 	value, err := OpenPostgres(ctx, os.Getenv(postgresTestDSNEnv))
 	if value != nil {
@@ -969,6 +990,180 @@ func TestPostgresConcurrentControlBatchesUseStableDeviceLockOrder(t *testing.T)
 	}
 }
 
+func TestPostgresConcurrentReconcileClaimHasOneWinner(t *testing.T) {
+	first, admin := openPostgresTestStore(t)
+	insertBellSite(t, admin, "tenant", "site", 2)
+	if err := first.CreateDevice(context.Background(), videoDevice(1, "tenant", "site")); err != nil {
+		t.Fatal(err)
+	}
+	second, err := OpenPostgres(context.Background(), os.Getenv(postgresTestDSNEnv))
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { _ = second.Close() })
+	now := time.Date(2026, 8, 7, 0, 0, 0, 0, time.UTC)
+	start := make(chan struct{})
+	counts := make(chan int, 2)
+	errorsFound := make(chan error, 2)
+	var wait sync.WaitGroup
+	for index, repository := range []*Postgres{first, second} {
+		wait.Add(1)
+		go func(index int, repository *Postgres) {
+			defer wait.Done()
+			<-start
+			values, err := repository.ClaimDueReconcile(context.Background(), ReconcileClaim{
+				Owner: fmt.Sprintf("ins-%d", index), Token: fmt.Sprintf("token-%d", index),
+				Now: now, LeaseDuration: 30 * time.Second, Limit: 1,
+			})
+			if err != nil {
+				errorsFound <- err
+				return
+			}
+			counts <- len(values)
+		}(index, repository)
+	}
+	close(start)
+	wait.Wait()
+	close(counts)
+	close(errorsFound)
+	for err := range errorsFound {
+		t.Fatal(err)
+	}
+	total, winners := 0, 0
+	for count := range counts {
+		total += count
+		if count == 1 {
+			winners++
+		}
+	}
+	if total != 1 || winners != 1 {
+		t.Fatalf("due row was not exclusively claimed: total=%d winners=%d", total, winners)
+	}
+}
+
+func TestPostgresExpiredReconcileLeaseFencesOldWorkerAndRecordsOwnership(t *testing.T) {
+	postgres, admin := openPostgresTestStore(t)
+	insertBellSite(t, admin, "tenant", "site", 2)
+	value := videoDevice(1, "tenant", "site")
+	if err := postgres.CreateDevice(context.Background(), value); err != nil {
+		t.Fatal(err)
+	}
+	now := time.Date(2026, 8, 7, 0, 0, 0, 0, time.UTC)
+	first, err := postgres.ClaimDueReconcile(context.Background(), ReconcileClaim{
+		Owner: "ins-a", Token: "token-a", Now: now, LeaseDuration: 30 * time.Second, Limit: 1,
+	})
+	if err != nil || len(first) != 1 {
+		t.Fatalf("first claim failed: %+v %v", first, err)
+	}
+	early, err := postgres.ClaimDueReconcile(context.Background(), ReconcileClaim{
+		Owner: "ins-b", Token: "token-b", Now: now.Add(10 * time.Second),
+		LeaseDuration: 30 * time.Second, Limit: 1,
+	})
+	if err != nil || len(early) != 0 {
+		t.Fatalf("live lease was stolen: %+v %v", early, err)
+	}
+	if _, err := admin.Exec(`UPDATE sense.reconcile_state
+		SET lease_until = clock_timestamp() - interval '1 second'
+		WHERE device_id = $1`, value.ID); err != nil {
+		t.Fatal(err)
+	}
+	second, err := postgres.ClaimDueReconcile(context.Background(), ReconcileClaim{
+		Owner: "ins-b", Token: "token-b", Now: now.Add(31 * time.Second),
+		LeaseDuration: 30 * time.Second, Limit: 1,
+	})
+	if err != nil || len(second) != 1 {
+		t.Fatalf("expired lease was not recoverable: %+v %v", second, err)
+	}
+	if err := postgres.CompleteReconcile(
+		context.Background(), value.ID, value.Generation, "ins-a", "token-a", now.Add(32*time.Second),
+	); !errors.Is(err, ErrReconcileLeaseLost) {
+		t.Fatalf("old worker was not fenced: %v", err)
+	}
+	if err := postgres.CompleteReconcile(
+		context.Background(), value.ID, value.Generation, "ins-b", "token-b", now.Add(32*time.Second),
+	); err != nil {
+		t.Fatal(err)
+	}
+	var ownershipDevice string
+	if err := admin.QueryRow(`SELECT device_id FROM sense.media_path_ownership WHERE path_name = $1`,
+		value.PathName).Scan(&ownershipDevice); err != nil {
+		t.Fatal(err)
+	}
+	if ownershipDevice != value.ID {
+		t.Fatalf("wrong ownership was recorded: %q", ownershipDevice)
+	}
+	var leaseToken sql.NullString
+	if err := admin.QueryRow(`SELECT lease_token FROM sense.reconcile_state WHERE device_id = $1`,
+		value.ID).Scan(&leaseToken); err != nil {
+		t.Fatal(err)
+	}
+	if leaseToken.Valid {
+		t.Fatal("completion did not release the reconcile lease")
+	}
+}
+
+func TestPostgresOrphanReportLeaseAndCleanupAuditAreFencedAndIdempotent(t *testing.T) {
+	postgres, _ := openPostgresTestStore(t)
+	ctx := context.Background()
+	now := time.Date(2026, 8, 7, 0, 0, 0, 0, time.UTC)
+	acquired, err := postgres.AcquireOperationalLease(
+		ctx, OperationalLeaseOrphanScan, "ins-a", "scan-token-a", now, 30*time.Second,
+	)
+	if err != nil || !acquired {
+		t.Fatalf("scan lease failed: %v %v", acquired, err)
+	}
+	scan := OrphanScan{
+		ID: "scan_" + strings.Repeat("0", 26), InstanceID: "ins-a",
+		ObservedCount: 10, OwnedStaleCount: 1, UnownedCount: 1,
+		SafetyAllowed: true, SafetyReason: "allowed",
+		CompletedAt: now.Add(time.Second), ExpiresAt: now.Add(15 * time.Minute),
+		Findings: []OrphanFinding{
+			{PathName: "stale", Classification: OrphanOwnedStale, DeviceID: "old-device"},
+			{PathName: "unknown", Classification: OrphanUnowned},
+		},
+	}
+	if err := postgres.SaveOrphanScan(ctx, scan, "ins-a", "scan-token-a"); err != nil {
+		t.Fatal(err)
+	}
+	loaded, err := postgres.GetOrphanScan(ctx, scan.ID)
+	if err != nil || len(loaded.Findings) != 2 || !loaded.SafetyAllowed {
+		t.Fatalf("stored scan mismatch: %+v %v", loaded, err)
+	}
+	if err := postgres.RecordOrphanCleanup(
+		ctx, scan.ID, "stale", "operator", "deleted", "", now.Add(2*time.Second),
+	); err != nil {
+		t.Fatal(err)
+	}
+	if err := postgres.RecordOrphanCleanup(
+		ctx, scan.ID, "unknown", "operator", "deleted", "", now.Add(2*time.Second),
+	); err == nil {
+		t.Fatal("unowned path accepted a cleanup audit record")
+	}
+	if err := postgres.RecordOrphanCleanup(
+		ctx, scan.ID, "stale", "operator-2", "failed", "media_error", now.Add(3*time.Second),
+	); err != nil {
+		t.Fatal(err)
+	}
+	loaded, err = postgres.GetOrphanScan(ctx, scan.ID)
+	if err != nil || !loaded.Findings[0].Deleted {
+		t.Fatalf("successful cleanup was downgraded: %+v %v", loaded, err)
+	}
+
+	acquired, err = postgres.AcquireOperationalLease(
+		ctx, OperationalLeaseOrphanScan, "ins-b", "scan-token-b", now.Add(31*time.Second), 30*time.Second,
+	)
+	if err != nil || !acquired {
+		t.Fatalf("expired scan lease was not recoverable: %v %v", acquired, err)
+	}
+	staleScan := scan
+	staleScan.ID = "scan_" + strings.Repeat("1", 26)
+	staleScan.CompletedAt = now.Add(32 * time.Second)
+	staleScan.ExpiresAt = staleScan.CompletedAt.Add(15 * time.Minute)
+	if err := postgres.SaveOrphanScan(ctx, staleScan, "ins-a", "scan-token-a"); !errors.Is(err, ErrOperationalLeaseLost) {
+		t.Fatalf("stale scan worker was not fenced: %v", err)
+	}
+}
+
 func openPostgresTestStore(t *testing.T) (*Postgres, *sql.DB) {
 	t.Helper()
 	dsn := os.Getenv(postgresTestDSNEnv)
@@ -985,6 +1180,11 @@ func openPostgresTestStore(t *testing.T) (*Postgres, *sql.DB) {
 		t.Fatal("connect PostgreSQL test administrator")
 	}
 	if _, err := admin.ExecContext(context.Background(), `TRUNCATE
+		sense.orphan_cleanup_actions,
+		sense.orphan_scan_findings,
+		sense.orphan_scan_runs,
+		sense.operational_leases,
+		sense.media_path_ownership,
 		sense.control_idempotency_receipts,
 		sense.batch_operation_items,
 		sense.batch_operations,

Sense/internal/store/repository.go

@@ -21,6 +21,8 @@ var (
 	ErrAreaPolicyUnavailable      = errors.New("area policy unavailable")
 	ErrAreaPolicyInvalid          = errors.New("area policy invalid")
 	ErrAreaPolicyDenied           = errors.New("area policy denies imaging device")
+	ErrReconcileLeaseLost         = errors.New("reconcile lease lost")
+	ErrOperationalLeaseLost       = errors.New("operational lease lost")
 )
 
 // Repository is the storage boundary used by the Sense process. SQLite stays
@@ -31,6 +33,10 @@ type Repository interface {
 	SetDesiredState(context.Context, string, device.DesiredState) error
 	GetDevice(context.Context, string) (device.Device, error)
 	ListDueReconcile(context.Context, time.Time, int) ([]ReconcileCandidate, error)
+	ClaimDueReconcile(context.Context, ReconcileClaim) ([]ReconcileCandidate, error)
+	RenewReconcileLease(context.Context, string, string, string, time.Time, time.Duration) (bool, error)
+	CompleteReconcile(context.Context, string, int64, string, string, time.Time) error
+	FailReconcile(context.Context, string, int, time.Time, string, string, string, time.Time) error
 	ListEnabledVideoDevices(context.Context, int) ([]device.Device, error)
 	MarkReconciled(context.Context, string, int64, time.Time) error
 	MarkReconcileFailure(context.Context, string, int, time.Time, string, time.Time) error
@@ -39,6 +45,17 @@ type Repository interface {
 	ConvergenceSnapshot(context.Context) (ConvergenceSnapshot, error)
 }
 
+// ReconcileClaim identifies one short-lived batch claim. Token is unique per
+// run and fences a worker whose lease expired and was acquired by another
+// process. SQLite accepts the shape but remains explicitly single-process.
+type ReconcileClaim struct {
+	Owner         string
+	Token         string
+	Now           time.Time
+	LeaseDuration time.Duration
+	Limit         int
+}
+
 func OpenRepository(ctx context.Context, driver, dsn string) (Repository, error) {
 	switch strings.ToLower(strings.TrimSpace(driver)) {
 	case "", DriverSQLite:

Sense/internal/store/sqlite.go

@@ -430,6 +430,24 @@ func (s *SQLite) ListDueReconcile(ctx context.Context, now time.Time, limit int)
 	return candidates, nil
 }
 
+func (s *SQLite) ClaimDueReconcile(ctx context.Context, claim ReconcileClaim) ([]ReconcileCandidate, error) {
+	// SQLite is retained for one-process M1 development. It deliberately does
+	// not claim cross-process leases; PostgreSQL is the production M2 boundary.
+	return s.ListDueReconcile(ctx, claim.Now, claim.Limit)
+}
+
+func (s *SQLite) RenewReconcileLease(
+	ctx context.Context,
+	_, _, _ string,
+	_ time.Time,
+	_ time.Duration,
+) (bool, error) {
+	if err := ctx.Err(); err != nil {
+		return false, err
+	}
+	return true, nil
+}
+
 func (s *SQLite) ListEnabledVideoDevices(ctx context.Context, limit int) ([]device.Device, error) {
 	if limit <= 0 {
 		return nil, nil
@@ -499,6 +517,16 @@ func (s *SQLite) MarkReconciled(ctx context.Context, id string, generation int64
 	return nil
 }
 
+func (s *SQLite) CompleteReconcile(
+	ctx context.Context,
+	id string,
+	generation int64,
+	_, _ string,
+	now time.Time,
+) error {
+	return s.MarkReconciled(ctx, id, generation, now)
+}
+
 func (s *SQLite) MarkReconcileFailure(ctx context.Context, id string, failureCount int, nextAttempt time.Time, errorCode string, now time.Time) error {
 	tx, err := s.db.BeginTx(ctx, nil)
 	if err != nil {
@@ -526,6 +554,17 @@ func (s *SQLite) MarkReconcileFailure(ctx context.Context, id string, failureCou
 	return nil
 }
 
+func (s *SQLite) FailReconcile(
+	ctx context.Context,
+	id string,
+	failureCount int,
+	nextAttempt time.Time,
+	errorCode, _, _ string,
+	now time.Time,
+) error {
+	return s.MarkReconcileFailure(ctx, id, failureCount, nextAttempt, errorCode, now)
+}
+
 func (s *SQLite) UpdateActualState(ctx context.Context, id string, state device.ActualState, now time.Time) error {
 	if state != device.ActualPending && state != device.ActualOnline && state != device.ActualOffline && state != device.ActualFailed {
 		return fmt.Errorf("invalid actual state %q", state)

Sense/scripts/t014-capacity.ps1

@@ -0,0 +1,973 @@
+[CmdletBinding()]
+param(
+    [string]$PgRoot = 'D:\pgsql17',
+    [string]$RuntimeRoot = (Join-Path ([IO.Path]::GetTempPath()) 'yovision-t014'),
+    [ValidateRange(1, 1440)]
+    [int]$ObservationMinutes = 30,
+    [string]$OutputPath = '',
+    [switch]$PreflightOnly
+)
+
+$ErrorActionPreference = 'Stop'
+$ProgressPreference = 'SilentlyContinue'
+Set-StrictMode -Version Latest
+
+$sourceCount = 16
+$faultIndexes = @(5, 6, 7, 8)
+$sampleSeconds = 10
+$mediaMTXVersion = 'v1.19.3'
+$mediaMTXSHA256 = '5d82148d1032a6a190d9909a2997d9989457aaadf49af87dd02cd4512d31bebe'
+$mediaMTXExecutableSHA256 = '1cda85249312cb9463f9f94c5a712b9f160c9af3fd9490f0d4723911d7880e05'
+$migrationNames = @(
+    '002_bell.sql',
+    '003_sense.sql',
+    '004_privileges.sql',
+    '005_area_policy.sql',
+    '006_device_operation_outbox.sql',
+    '007_privileges_area_audit.sql',
+    '008_control_api.sql',
+    '009_privileges_control_api.sql',
+    '010_reconcile_safety.sql',
+    '011_privileges_reconcile_safety.sql'
+)
+
+function ConvertTo-Base64Url([byte[]]$Bytes) {
+    return [Convert]::ToBase64String($Bytes).TrimEnd('=').Replace('+', '-').Replace('/', '_')
+}
+
+function New-RandomBytes([int]$Count) {
+    $bytes = [byte[]]::new($Count)
+    [Security.Cryptography.RandomNumberGenerator]::Fill($bytes)
+    return $bytes
+}
+
+function New-SecretToken {
+    return ConvertTo-Base64Url (New-RandomBytes 32)
+}
+
+function Get-SHA256Hex([string]$Value) {
+    $bytes = [Text.Encoding]::UTF8.GetBytes($Value)
+    $digest = [Security.Cryptography.SHA256]::HashData($bytes)
+    return ([Convert]::ToHexString($digest)).ToLowerInvariant()
+}
+
+function Get-FreeTcpPort([Collections.Generic.HashSet[int]]$Reserved) {
+    while ($true) {
+        $listener = [Net.Sockets.TcpListener]::new([Net.IPAddress]::Loopback, 0)
+        $listener.Start()
+        $port = ([Net.IPEndPoint]$listener.LocalEndpoint).Port
+        $listener.Stop()
+        if ($Reserved.Add($port)) {
+            return $port
+        }
+    }
+}
+
+function Wait-Port([int]$Port, [int]$TimeoutSeconds = 30) {
+    $watch = [Diagnostics.Stopwatch]::StartNew()
+    while ($watch.Elapsed.TotalSeconds -lt $TimeoutSeconds) {
+        $client = [Net.Sockets.TcpClient]::new()
+        try {
+            $task = $client.ConnectAsync('127.0.0.1', $Port)
+            if ($task.Wait(500) -and $client.Connected) {
+                return
+            }
+        }
+        catch {
+        }
+        finally {
+            $client.Dispose()
+        }
+        Start-Sleep -Milliseconds 250
+    }
+    throw "local process did not listen before timeout"
+}
+
+function Start-ManagedProcess(
+    [string]$Name,
+    [string]$FilePath,
+    [string[]]$Arguments,
+    [hashtable]$Environment = @{}
+) {
+    $start = [Diagnostics.ProcessStartInfo]::new()
+    $start.FileName = $FilePath
+    $start.WorkingDirectory = $script:session
+    $start.UseShellExecute = $false
+    $start.CreateNoWindow = $true
+    $start.RedirectStandardOutput = $true
+    $start.RedirectStandardError = $true
+    foreach ($argument in $Arguments) {
+        $start.ArgumentList.Add($argument)
+    }
+    foreach ($entry in $Environment.GetEnumerator()) {
+        $start.Environment[$entry.Key] = [string]$entry.Value
+    }
+    $process = [Diagnostics.Process]::new()
+    $process.StartInfo = $start
+    if (-not $process.Start()) {
+        throw "failed to start required process: $Name"
+    }
+    return [pscustomobject]@{
+        Name = $Name
+        Process = $process
+        Stdout = $process.StandardOutput.ReadToEndAsync()
+        Stderr = $process.StandardError.ReadToEndAsync()
+    }
+}
+
+function Stop-ManagedProcess($Managed) {
+    if ($null -eq $Managed -or $null -eq $Managed.Process) {
+        return
+    }
+    if (-not $Managed.Process.HasExited) {
+        $Managed.Process.Kill()
+        $Managed.Process.WaitForExit(10000) | Out-Null
+    }
+}
+
+function Stop-AllManagedProcesses($Items) {
+    $processes = @($Items | Where-Object { $null -ne $_ -and $null -ne $_.Process })
+    foreach ($item in $processes) {
+        try {
+            if (-not $item.Process.HasExited) {
+                $item.Process.Kill()
+            }
+        }
+        catch {
+            if (-not $item.Process.HasExited) { throw }
+        }
+    }
+    $cleanupWatch = [Diagnostics.Stopwatch]::StartNew()
+    while ($cleanupWatch.Elapsed.TotalSeconds -lt 10 -and
+        @($processes | Where-Object { -not $_.Process.HasExited }).Count -gt 0) {
+        Start-Sleep -Milliseconds 100
+    }
+    $remaining = @($processes | Where-Object { -not $_.Process.HasExited })
+    if ($remaining.Count -gt 0) {
+        Write-Warning "managed processes did not exit within the shared cleanup deadline: $($remaining.Count)"
+    }
+    foreach ($item in $processes) {
+        if ($item.Process.HasExited) {
+            $item.Stdout.Wait(2000) | Out-Null
+            $item.Stderr.Wait(2000) | Out-Null
+            $item.Process.Dispose()
+        }
+    }
+}
+
+function Remove-SessionDirectory([string]$Path) {
+    Get-ChildItem -LiteralPath $Path -Recurse -Force -ErrorAction SilentlyContinue |
+        ForEach-Object { $_.Attributes = 'Normal' }
+    (Get-Item -LiteralPath $Path -Force).Attributes = 'Directory'
+    $deleteWatch = [Diagnostics.Stopwatch]::StartNew()
+    while (Test-Path -LiteralPath $Path) {
+        try {
+            Remove-Item -LiteralPath $Path -Recurse -Force -ErrorAction Stop
+        }
+        catch {
+            if ($deleteWatch.Elapsed.TotalSeconds -ge 10) { throw }
+            Start-Sleep -Milliseconds 200
+        }
+    }
+}
+
+function Assert-Alive($Managed) {
+    if ($null -eq $Managed -or $Managed.Process.HasExited) {
+        $code = if ($null -eq $Managed) { 'not-started' } else { $Managed.Process.ExitCode }
+        throw "required process exited: $($Managed.Name), code=$code"
+    }
+}
+
+function Invoke-Checked {
+    param(
+        [Parameter(Mandatory)] [string]$FilePath,
+        [Parameter(ValueFromRemainingArguments)] [string[]]$Arguments
+    )
+    & $FilePath @Arguments 2>&1 | Out-Null
+    if ($LASTEXITCODE -ne 0) {
+        throw "required command failed with exit code $LASTEXITCODE"
+    }
+}
+
+function Invoke-ControlRequest(
+    [string]$Method,
+    [string]$Path,
+    [int[]]$ExpectedStatus,
+    $Body = $null,
+    [hashtable]$ExtraHeaders = @{}
+) {
+    $headers = @{
+        Authorization = "Bearer $script:controlToken"
+        Accept = 'application/json'
+    }
+    foreach ($entry in $ExtraHeaders.GetEnumerator()) {
+        $headers[$entry.Key] = $entry.Value
+    }
+    $parameters = @{
+        Method = $Method
+        Uri = "http://127.0.0.1:$script:senseHTTPPort$Path"
+        Headers = $headers
+        TimeoutSec = 15
+        NoProxy = $true
+        SkipHttpErrorCheck = $true
+    }
+    if ($null -ne $Body) {
+        $parameters.ContentType = 'application/json'
+        $parameters.Body = ($Body | ConvertTo-Json -Depth 10 -Compress)
+    }
+    $response = Invoke-WebRequest @parameters
+    $statusCode = [int]$response.StatusCode
+    $statusMatches = $false
+    foreach ($expected in $ExpectedStatus) {
+        if ([int]$expected -eq $statusCode) {
+            $statusMatches = $true
+            break
+        }
+    }
+    if (-not $statusMatches) {
+        $code = 'unknown'
+        try {
+            $code = ((Get-ResponseText $response) | ConvertFrom-Json).code
+        }
+        catch {
+        }
+        throw "Control API returned unexpected status $statusCode, expected=$($ExpectedStatus -join ','), code=$code"
+    }
+    return $response
+}
+
+function Get-ResponseText($Response) {
+    if ($Response.Content -is [byte[]]) {
+        return [Text.Encoding]::UTF8.GetString($Response.Content)
+    }
+    return [string]$Response.Content
+}
+
+function Convert-ResponseJSON($Response) {
+    return ((Get-ResponseText $Response) | ConvertFrom-Json)
+}
+
+function Get-ResponseETag($Response) {
+    $value = [string]$Response.Headers.ETag
+    if ([string]::IsNullOrWhiteSpace($value)) {
+        throw 'Control API response did not contain ETag'
+    }
+    return $value
+}
+
+function Get-DevicePage {
+    $response = Invoke-ControlRequest 'GET' '/api/v1/sites/site-t014/devices?limit=100' @(200)
+    return Convert-ResponseJSON $response
+}
+
+function Get-DeviceEntries([string[]]$DeviceIDs) {
+    $entries = [Collections.Generic.List[object]]::new()
+    foreach ($id in $DeviceIDs) {
+        $response = Invoke-ControlRequest 'GET' "/api/v1/sites/site-t014/devices/$id" @(200)
+        $entries.Add([pscustomobject]@{
+            DeviceID = $id
+            ETag = Get-ResponseETag $response
+        })
+    }
+    return @($entries)
+}
+
+function Invoke-BatchDesiredState(
+    [string]$DesiredState,
+    [object[]]$Entries,
+    [string]$KeySuffix
+) {
+    $items = @($Entries | ForEach-Object {
+        [ordered]@{
+            device_id = $_.DeviceID
+            etag = $_.ETag
+            desired_state = $DesiredState
+        }
+    })
+    $watch = [Diagnostics.Stopwatch]::StartNew()
+    $response = Invoke-ControlRequest 'POST' '/api/v1/sites/site-t014/devices:batchDesiredState' @(202) ([ordered]@{
+        items = $items
+        reason = "T-014 laboratory $DesiredState baseline"
+    }) @{ 'Idempotency-Key' = "t014-batch-$KeySuffix-$script:runNonce" }
+    $operation = Convert-ResponseJSON $response
+    $results = @($operation.results)
+    if ($operation.status -ne 'succeeded' -or $results.Count -ne $sourceCount -or
+        @($results | Where-Object { $_.status -ne 'succeeded' }).Count -ne 0) {
+        $statusCounts = @($results | Group-Object status | Sort-Object Name |
+            ForEach-Object { "$($_.Name):$($_.Count)" }) -join ','
+        $errorCounts = @($results | Where-Object { $_.error_code } | Group-Object error_code | Sort-Object Name |
+            ForEach-Object { "$($_.Name):$($_.Count)" }) -join ','
+        throw "batch desired-state operation was not fully successful: operation=$($operation.status), items=$($results.Count), statuses=$statusCounts, errors=$errorCounts"
+    }
+    return [ordered]@{
+        status = [string]$operation.status
+        item_count = $results.Count
+        request_seconds = [Math]::Round($watch.Elapsed.TotalSeconds, 3)
+    }
+}
+
+function Get-MediaInventory([int]$APIPort) {
+    $config = Invoke-RestMethod -Method Get -Uri "http://127.0.0.1:$APIPort/v3/config/paths/list?page=0&itemsPerPage=100" -TimeoutSec 5 -NoProxy
+    $runtime = Invoke-RestMethod -Method Get -Uri "http://127.0.0.1:$APIPort/v3/paths/list?page=0&itemsPerPage=100" -TimeoutSec 5 -NoProxy
+    $items = @($runtime.items)
+    [UInt64]$inboundBytes = 0
+    [UInt64]$frameErrors = 0
+    foreach ($item in $items) {
+        if ($null -ne $item.inboundBytes) {
+            $inboundBytes += [UInt64]$item.inboundBytes
+        }
+        if ($null -ne $item.inboundFramesInError) {
+            $frameErrors += [UInt64]$item.inboundFramesInError
+        }
+    }
+    return [pscustomobject]@{
+        Configured = [int]$config.itemCount
+        Runtime = [int]$runtime.itemCount
+        Online = @($items | Where-Object { $_.online -eq $true -and $_.available -eq $true }).Count
+        InboundBytes = $inboundBytes
+        FrameErrors = $frameErrors
+    }
+}
+
+function Get-SenseMetric([string]$Name, [string]$Labels) {
+    $response = Invoke-WebRequest -Method Get -Uri "http://127.0.0.1:$script:senseHTTPPort/metrics" -TimeoutSec 5 -NoProxy
+    $prefix = [Regex]::Escape($Name + $Labels)
+    $match = [Regex]::Match((Get-ResponseText $response), "(?m)^$prefix\s+([-+0-9.eE]+)$")
+    if (-not $match.Success) {
+        throw "required Sense metric was not found: $Name"
+    }
+    return [double]::Parse($match.Groups[1].Value, [Globalization.CultureInfo]::InvariantCulture)
+}
+
+function Wait-SenseHealth($Managed, [int]$TimeoutSeconds = 45) {
+    $watch = [Diagnostics.Stopwatch]::StartNew()
+    while ($watch.Elapsed.TotalSeconds -lt $TimeoutSeconds) {
+        Assert-Alive $Managed
+        try {
+            $ready = Invoke-RestMethod -Method Get -Uri "http://127.0.0.1:$script:senseHTTPPort/readyz" -TimeoutSec 2 -NoProxy
+            if ($ready.status -eq 'ready') {
+                return
+            }
+        }
+        catch {
+        }
+        Start-Sleep -Milliseconds 500
+    }
+    throw 'Sense readiness endpoint did not become ready'
+}
+
+function Wait-SourcePublishers([int]$TimeoutSeconds = 90) {
+    $watch = [Diagnostics.Stopwatch]::StartNew()
+    while ($watch.Elapsed.TotalSeconds -lt $TimeoutSeconds) {
+        foreach ($publisher in $script:publishers.Values) {
+            Assert-Alive $publisher
+        }
+        try {
+            $inventory = Get-MediaInventory $script:sourceAPIPort
+            if ($inventory.Runtime -eq $sourceCount -and $inventory.Online -eq $sourceCount) {
+                return [Math]::Round($watch.Elapsed.TotalSeconds, 1)
+            }
+        }
+        catch {
+        }
+        Start-Sleep -Seconds 1
+    }
+    throw 'independent source publishers did not all become online'
+}
+
+function Wait-Convergence([ValidateSet('enabled', 'disabled')] [string]$DesiredState, [int]$TimeoutSeconds = 300) {
+    $watch = [Diagnostics.Stopwatch]::StartNew()
+    $last = 'no observation'
+    while ($watch.Elapsed.TotalSeconds -lt $TimeoutSeconds) {
+        try {
+            $page = Get-DevicePage
+            $devices = @($page.items)
+            $inventory = Get-MediaInventory $script:productionAPIPort
+            $totalMetric = Get-SenseMetric 'sense_reconcile_devices' '{state="total"}'
+            $unconvergedMetric = Get-SenseMetric 'sense_reconcile_devices' '{state="unconverged"}'
+            if ($DesiredState -eq 'enabled') {
+                $stateOK = $devices.Count -eq $sourceCount -and
+                    @($devices | Where-Object {
+                        $_.desired_state -ne 'enabled' -or $_.actual_state -ne 'online' -or -not $_.converged
+                    }).Count -eq 0
+                $mediaOK = $inventory.Configured -eq $sourceCount -and
+                    $inventory.Runtime -eq $sourceCount -and $inventory.Online -eq $sourceCount
+                $metricsOK = $totalMetric -eq $sourceCount -and $unconvergedMetric -eq 0
+            }
+            else {
+                $stateOK = $devices.Count -eq $sourceCount -and
+                    @($devices | Where-Object {
+                        $_.desired_state -ne 'disabled' -or $_.actual_state -ne 'offline' -or -not $_.converged
+                    }).Count -eq 0
+                $mediaOK = $inventory.Configured -eq 0 -and $inventory.Runtime -eq 0
+                $metricsOK = $totalMetric -eq 0 -and $unconvergedMetric -eq 0
+            }
+            $last = "devices=$($devices.Count), configured=$($inventory.Configured), runtime=$($inventory.Runtime), online=$($inventory.Online), unconverged=$unconvergedMetric"
+            if ($stateOK -and $mediaOK -and $metricsOK) {
+                return [Math]::Round($watch.Elapsed.TotalSeconds, 1)
+            }
+        }
+        catch {
+            $last = $_.Exception.Message
+        }
+        Start-Sleep -Seconds 1
+    }
+    throw "devices did not reach $DesiredState convergence: $last"
+}
+
+function Wait-PartialFault([int]$TimeoutSeconds = 120) {
+    $watch = [Diagnostics.Stopwatch]::StartNew()
+    while ($watch.Elapsed.TotalSeconds -lt $TimeoutSeconds) {
+        try {
+            $page = Get-DevicePage
+            $devices = @($page.items)
+            $online = @($devices | Where-Object { $_.actual_state -eq 'online' }).Count
+            $notOnline = $devices.Count - $online
+            if ($devices.Count -eq $sourceCount -and $online -eq ($sourceCount - $faultIndexes.Count) -and
+                $notOnline -eq $faultIndexes.Count) {
+                return [ordered]@{
+                    detection_seconds = [Math]::Round($watch.Elapsed.TotalSeconds, 1)
+                    affected = $notOnline
+                    unaffected_online = $online
+                }
+            }
+        }
+        catch {
+        }
+        Start-Sleep -Seconds 1
+    }
+    throw 'four-source fault was not isolated to exactly four devices'
+}
+
+function Start-Publisher([int]$Index) {
+    $name = 'synthetic-{0:D2}' -f $Index
+    return Start-ManagedProcess "publisher-$Index" $script:ffmpeg @(
+        '-hide_banner', '-loglevel', 'warning', '-re', '-stream_loop', '-1',
+        '-i', $script:fixturePath, '-map', '0:v:0', '-c', 'copy', '-an',
+        '-f', 'rtsp', '-rtsp_transport', 'tcp',
+        "rtsp://127.0.0.1:$script:sourceRTSPPort/$name"
+    )
+}
+
+function Get-ProcessResourceSample($Managed, [double]$PreviousCPU, [double]$ElapsedSeconds) {
+    Assert-Alive $Managed
+    $Managed.Process.Refresh()
+    $totalCPU = $Managed.Process.TotalProcessorTime.TotalSeconds
+    $normalizedCPU = 0.0
+    if ($ElapsedSeconds -gt 0) {
+        $normalizedCPU = (($totalCPU - $PreviousCPU) / $ElapsedSeconds / [Environment]::ProcessorCount) * 100
+    }
+    return [pscustomobject]@{
+        TotalCPU = $totalCPU
+        CPUPercent = [Math]::Max(0, $normalizedCPU)
+        WorkingSetMiB = $Managed.Process.WorkingSet64 / 1MB
+        PrivateMiB = $Managed.Process.PrivateMemorySize64 / 1MB
+        Handles = $Managed.Process.HandleCount
+    }
+}
+
+function Get-Average([Collections.Generic.List[double]]$Values) {
+    if ($Values.Count -eq 0) { return 0.0 }
+    return ($Values | Measure-Object -Average).Average
+}
+
+function Get-Maximum([Collections.Generic.List[double]]$Values) {
+    if ($Values.Count -eq 0) { return 0.0 }
+    return ($Values | Measure-Object -Maximum).Maximum
+}
+
+function Get-PostgresScalar([string]$Query) {
+    $value = & $script:psql -X -A -t -v ON_ERROR_STOP=1 -d $script:adminDatabaseDSN -c $Query
+    if ($LASTEXITCODE -ne 0) {
+        throw 'PostgreSQL observation query failed'
+    }
+    return (($value | Out-String).Trim())
+}
+
+function Write-Result([string]$JSON) {
+    if (-not [string]::IsNullOrWhiteSpace($OutputPath)) {
+        $resolvedOutput = [IO.Path]::GetFullPath($OutputPath)
+        $repoPrefix = $script:repoRoot.TrimEnd('\') + '\'
+        if ($resolvedOutput.StartsWith($repoPrefix, [StringComparison]::OrdinalIgnoreCase)) {
+            throw 'capacity result output must stay outside the repository'
+        }
+        $parent = Split-Path -Parent $resolvedOutput
+        if (-not (Test-Path -LiteralPath $parent -PathType Container)) {
+            throw 'capacity result output directory does not exist'
+        }
+        [IO.File]::WriteAllText($resolvedOutput, $JSON + [Environment]::NewLine, [Text.UTF8Encoding]::new($false))
+    }
+    Write-Output $JSON
+}
+
+$script:repoRoot = (Resolve-Path -LiteralPath (Join-Path $PSScriptRoot '..\..')).Path
+$pgRootResolved = (Resolve-Path -LiteralPath $PgRoot).Path
+$pgBin = Join-Path $pgRootResolved 'bin'
+$script:initdb = Join-Path $pgBin 'initdb.exe'
+$script:pgCtl = Join-Path $pgBin 'pg_ctl.exe'
+$script:psql = Join-Path $pgBin 'psql.exe'
+$script:createdb = Join-Path $pgBin 'createdb.exe'
+$postgres = Join-Path $pgBin 'postgres.exe'
+foreach ($required in @($script:initdb, $script:pgCtl, $script:psql, $script:createdb, $postgres)) {
+    if (-not (Test-Path -LiteralPath $required -PathType Leaf)) {
+        throw 'PostgreSQL executable is missing under the selected PgRoot'
+    }
+}
+$postgresVersion = (& $postgres --version 2>&1 | Out-String).Trim()
+if ($LASTEXITCODE -ne 0 -or $postgresVersion -notmatch 'PostgreSQL\) 17\.10$') {
+    throw 'T-014 requires the frozen PostgreSQL 17.10 binaries'
+}
+$script:ffmpeg = (Get-Command ffmpeg -ErrorAction Stop).Source
+$ffmpegVersion = (& $script:ffmpeg -version 2>&1 | Select-Object -First 1)
+if ($ffmpegVersion -notmatch '^ffmpeg version 8\.1\.2') {
+    throw 'T-014 requires the frozen FFmpeg 8.1.2 build'
+}
+$senseDirectory = Join-Path $script:repoRoot 'Sense'
+$goVersion = (& go '-C' $senseDirectory 'version' 2>&1 | Out-String).Trim()
+if ($LASTEXITCODE -ne 0 -or $goVersion -notmatch '^go version go1\.26\.5 ') {
+    throw 'T-014 requires the frozen Sense Go 1.26.5 toolchain'
+}
+
+$systemTemp = [IO.Path]::GetFullPath([IO.Path]::GetTempPath()).TrimEnd('\')
+$runtimeResolved = [IO.Path]::GetFullPath($RuntimeRoot).TrimEnd('\')
+$runtimePrefix = $systemTemp + '\'
+if (-not $runtimeResolved.StartsWith($runtimePrefix, [StringComparison]::OrdinalIgnoreCase) -or
+    [IO.Path]::GetFileName($runtimeResolved) -notlike 'yovision-t014*') {
+    throw 'RuntimeRoot must be a yovision-t014 directory under the system temporary directory'
+}
+
+$mediaDirectory = Join-Path $runtimeResolved 'mediamtx-v1.19.3'
+$mediaMTX = Join-Path $mediaDirectory 'mediamtx.exe'
+if ($PreflightOnly) {
+    $memoryGiB = 0.0
+    try { $memoryGiB = (Get-CimInstance Win32_ComputerSystem).TotalPhysicalMemory / 1GB } catch {}
+    Write-Result (([ordered]@{
+        success = $true
+        preflight_only = $true
+        source_count = $sourceCount
+        observation_minutes = $ObservationMinutes
+        formal_eligible = $ObservationMinutes -ge 30
+        mediamtx_cached = Test-Path -LiteralPath $mediaMTX -PathType Leaf
+        postgres_version = $postgresVersion
+        ffmpeg_version = [string]$ffmpegVersion
+        go_version = $goVersion
+        logical_processors = [Environment]::ProcessorCount
+        total_memory_gib = [Math]::Round($memoryGiB, 2)
+    } | ConvertTo-Json -Depth 5))
+    exit 0
+}
+
+New-Item -ItemType Directory -Path $runtimeResolved -Force | Out-Null
+if (-not (Test-Path -LiteralPath $mediaMTX -PathType Leaf)) {
+    $zip = Join-Path $runtimeResolved 'mediamtx_v1.19.3_windows_amd64.zip'
+    Invoke-WebRequest 'https://github.com/bluenviron/mediamtx/releases/download/v1.19.3/mediamtx_v1.19.3_windows_amd64.zip' -OutFile $zip
+    $actualHash = (Get-FileHash -LiteralPath $zip -Algorithm SHA256).Hash.ToLowerInvariant()
+    if ($actualHash -ne $mediaMTXSHA256) {
+        throw 'MediaMTX checksum mismatch'
+    }
+    New-Item -ItemType Directory -Path $mediaDirectory -Force | Out-Null
+    Expand-Archive -LiteralPath $zip -DestinationPath $mediaDirectory -Force
+}
+if ((Get-FileHash -LiteralPath $mediaMTX -Algorithm SHA256).Hash.ToLowerInvariant() -ne $mediaMTXExecutableSHA256) {
+    throw 'MediaMTX executable checksum mismatch'
+}
+
+$script:runNonce = [Guid]::NewGuid().ToString('N')
+$script:session = Join-Path $runtimeResolved ("session-$script:runNonce")
+New-Item -ItemType Directory -Path $script:session | Out-Null
+$reservedPorts = [Collections.Generic.HashSet[int]]::new()
+$script:sourceRTSPPort = Get-FreeTcpPort $reservedPorts
+$script:sourceAPIPort = Get-FreeTcpPort $reservedPorts
+$productionRTSPPort = Get-FreeTcpPort $reservedPorts
+$script:productionAPIPort = Get-FreeTcpPort $reservedPorts
+$productionMetricsPort = Get-FreeTcpPort $reservedPorts
+$script:senseHTTPPort = Get-FreeTcpPort $reservedPorts
+$postgresPort = Get-FreeTcpPort $reservedPorts
+
+$sourceConfig = Join-Path $script:session 'mediamtx-source.yml'
+$productionConfig = Join-Path $script:session 'mediamtx-production.yml'
+$sourceLines = [Collections.Generic.List[string]]::new()
+@(
+    'logLevel: warn',
+    "rtspAddress: 127.0.0.1:$script:sourceRTSPPort",
+    'rtspTransports: [tcp]',
+    'api: true',
+    "apiAddress: 127.0.0.1:$script:sourceAPIPort",
+    'metrics: false', 'rtmp: false', 'hls: false', 'webrtc: false', 'srt: false', 'moq: false',
+    'paths:'
+) | ForEach-Object { $sourceLines.Add($_) }
+foreach ($index in 1..$sourceCount) {
+    $sourceLines.Add(('  synthetic-{0:D2}:' -f $index))
+    $sourceLines.Add('    source: publisher')
+}
+[IO.File]::WriteAllLines($sourceConfig, $sourceLines, [Text.UTF8Encoding]::new($false))
+[IO.File]::WriteAllLines($productionConfig, @(
+    'logLevel: warn',
+    "rtspAddress: 127.0.0.1:$productionRTSPPort",
+    'rtspTransports: [tcp]',
+    'api: true',
+    "apiAddress: 127.0.0.1:$script:productionAPIPort",
+    'metrics: true',
+    "metricsAddress: 127.0.0.1:$productionMetricsPort",
+    'rtmp: false', 'hls: false', 'webrtc: false', 'srt: false', 'moq: false',
+    'paths: {}'
+), [Text.UTF8Encoding]::new($false))
+
+$script:fixturePath = Join-Path $script:session 'fixture.mp4'
+$senseBinary = Join-Path $script:session 'sense-api.exe'
+$authPath = Join-Path $script:session 'control-auth.json'
+$cursorPath = Join-Path $script:session 'cursor.key'
+$pgData = Join-Path $script:session 'pgdata'
+$pgLog = Join-Path $script:session 'postgres.log'
+$databaseName = 'yovision_t014'
+$adminRootDSN = "postgres://postgres@127.0.0.1:$postgresPort/postgres?sslmode=disable"
+$script:adminDatabaseDSN = "postgres://postgres@127.0.0.1:$postgresPort/${databaseName}?sslmode=disable"
+$senseDSN = "postgres://yovision_t014_sense@127.0.0.1:$postgresPort/${databaseName}?sslmode=disable"
+$existing5432 = @(
+    Get-NetTCPConnection -State Listen -LocalPort 5432 -ErrorAction SilentlyContinue |
+        Select-Object -ExpandProperty OwningProcess -Unique | Sort-Object
+)
+
+$managed = [Collections.Generic.List[object]]::new()
+$script:publishers = @{}
+$postgresStarted = $false
+$postgresStopped = $false
+$success = $false
+$stage = 'preparing fixtures'
+$failure = $null
+$resultJSON = $null
+try {
+    Invoke-Checked $script:ffmpeg '-hide_banner' '-loglevel' 'error' '-f' 'lavfi' '-i' 'testsrc2=size=640x360:rate=10' '-t' '30' '-c:v' 'libx264' '-preset' 'ultrafast' '-tune' 'zerolatency' '-pix_fmt' 'yuv420p' '-g' '10' '-an' '-movflags' '+faststart' '-y' $script:fixturePath
+    Invoke-Checked 'go' '-C' $senseDirectory 'build' '-o' $senseBinary './cmd/sense-api'
+
+    $stage = 'starting isolated PostgreSQL'
+    New-Item -ItemType Directory -Path $pgData | Out-Null
+    Invoke-Checked $script:initdb '-D' $pgData '-U' 'postgres' '-A' 'trust' '--encoding=UTF8' '--no-locale' '--no-sync'
+    $serverOptions = "-h 127.0.0.1 -p $postgresPort -c listen_addresses=127.0.0.1"
+    # Do not pipe pg_ctl start output: postgres can inherit the pipeline handle and
+    # keep PowerShell waiting until the server exits.
+    & $script:pgCtl '-D' $pgData '-l' $pgLog '-o' $serverOptions '-w' 'start'
+    if ($LASTEXITCODE -ne 0) {
+        throw "required command failed with exit code $LASTEXITCODE"
+    }
+    $postgresStarted = $true
+    Invoke-Checked $script:psql '-X' '-v' 'ON_ERROR_STOP=1' '-d' $adminRootDSN '-f' (Join-Path $script:repoRoot 'deploy\postgres\001_roles.sql')
+    Invoke-Checked $script:createdb '-h' '127.0.0.1' '-p' ([string]$postgresPort) '-U' 'postgres' $databaseName
+    foreach ($pass in 1..2) {
+        foreach ($name in $migrationNames) {
+            Invoke-Checked $script:psql '-X' '-v' 'ON_ERROR_STOP=1' '-d' $script:adminDatabaseDSN '-f' (Join-Path $script:repoRoot "deploy\postgres\$name")
+        }
+    }
+    Invoke-Checked $script:psql '-X' '-v' 'ON_ERROR_STOP=1' '-d' $adminRootDSN '-c' 'CREATE ROLE yovision_t014_sense LOGIN IN ROLE sense_app'
+    Invoke-Checked $script:psql '-X' '-v' 'ON_ERROR_STOP=1' '-d' $script:adminDatabaseDSN '-c' "INSERT INTO bell.sites(tenant_id,id,name,max_video_channels) VALUES ('tenant-t014','site-t014','T-014 Lab',16); INSERT INTO bell.areas(tenant_id,site_id,id,name,capture_policy) VALUES ('tenant-t014','site-t014','area-t014','T-014 Area','video_allowed');"
+
+    $stage = 'starting independent publishers'
+    $sourceMedia = Start-ManagedProcess 'mediamtx-source' $mediaMTX @($sourceConfig)
+    $managed.Add($sourceMedia)
+    Wait-Port $script:sourceAPIPort
+    foreach ($index in 1..$sourceCount) {
+        $script:publishers[$index] = Start-Publisher $index
+        $managed.Add($script:publishers[$index])
+    }
+    $publisherReadySeconds = Wait-SourcePublishers
+    $productionMedia = Start-ManagedProcess 'mediamtx-production' $mediaMTX @($productionConfig)
+    $managed.Add($productionMedia)
+    Wait-Port $script:productionAPIPort
+
+    $stage = 'starting Sense Control API'
+    $script:controlToken = New-SecretToken
+    $tokenDigest = Get-SHA256Hex $script:controlToken
+    $cursorKey = ConvertTo-Base64Url (New-RandomBytes 32)
+    $localCredential = New-SecretToken
+    [IO.File]::WriteAllText($authPath, (([ordered]@{
+        version = 1
+        principals = @([ordered]@{
+            token_sha256 = $tokenDigest
+            subject_id = 't014-runner'
+            actor_type = 'service'
+            tenant_id = 'tenant-t014'
+            site_ids = @('site-t014')
+            permissions = @('sense.devices.read', 'sense.devices.write')
+        })
+    } | ConvertTo-Json -Depth 6) + [Environment]::NewLine), [Text.UTF8Encoding]::new($false))
+    [IO.File]::WriteAllText($cursorPath, $cursorKey + [Environment]::NewLine, [Text.UTF8Encoding]::new($false))
+    $senseEnvironment = @{
+        SENSE_HTTP_ADDR = "127.0.0.1:$script:senseHTTPPort"
+        SENSE_DB_DRIVER = 'postgres'
+        SENSE_DB_DSN = $senseDSN
+        SENSE_MEDIAMTX_URL = "http://127.0.0.1:$script:productionAPIPort"
+        SENSE_RECONCILE_INTERVAL = '1s'
+        SENSE_RECONCILE_LEASE_DURATION = '30s'
+        SENSE_RECONCILE_OPERATION_TIMEOUT = '20s'
+        SENSE_PROBE_INTERVAL = '1s'
+        SENSE_INSTANCE_ID = 't014-lab'
+        SENSE_METRICS_ENABLED = 'true'
+        SENSE_ORPHAN_SCAN_ENABLED = 'false'
+        SENSE_ONVIF_MODE = 'disabled'
+        SENSE_CONTROL_API_ENABLED = 'true'
+        SENSE_CONTROL_AUTH_FILE = $authPath
+        SENSE_CONTROL_CURSOR_KEY_FILE = $cursorPath
+        SENSE_CREDENTIAL_SYNTHETIC_ONVIF_USERNAME = 't014-local'
+        SENSE_CREDENTIAL_SYNTHETIC_ONVIF_PASSWORD = $localCredential
+        SENSE_CREDENTIAL_SYNTHETIC_RTSP_USERNAME = 't014-local'
+        SENSE_CREDENTIAL_SYNTHETIC_RTSP_PASSWORD = $localCredential
+    }
+    $sense = Start-ManagedProcess 'sense-api' $senseBinary @() $senseEnvironment
+    $managed.Add($sense)
+    Wait-SenseHealth $sense
+
+    $stage = 'creating 16 disabled devices'
+    $deviceIDs = [Collections.Generic.List[string]]::new()
+    foreach ($index in 1..$sourceCount) {
+        $name = 'synthetic-{0:D2}' -f $index
+        $response = Invoke-ControlRequest 'POST' '/api/v1/sites/site-t014/devices' @(201) ([ordered]@{
+            serial_number = "t014-$name"
+            name = "T-014 source $index"
+            modality = 'video'
+            capabilities = @('video_capture')
+            area_id = 'area-t014'
+            endpoint_ref = "rtsp://127.0.0.1:$script:sourceRTSPPort/$name"
+            credential_ref = 'env://synthetic'
+            desired_state = 'disabled'
+        }) @{ 'Idempotency-Key' = "t014-create-$index-$script:runNonce" }
+        $created = Convert-ResponseJSON $response
+        $deviceIDs.Add([string]$created.id)
+    }
+    $stage = 'batch enabling 16 devices'
+    $firstEnableEntries = Get-DeviceEntries @($deviceIDs)
+    $firstEnableBatch = Invoke-BatchDesiredState 'enabled' $firstEnableEntries 'enable-1'
+    $firstEnableSeconds = Wait-Convergence 'enabled'
+    $firstEnabledInventory = Get-MediaInventory $script:productionAPIPort
+
+    $stage = 'rejecting seventeenth enabled device'
+    $overflowResponse = Invoke-ControlRequest 'POST' '/api/v1/sites/site-t014/devices' @(409) ([ordered]@{
+        serial_number = 't014-overflow-17'
+        name = 'T-014 overflow source'
+        modality = 'video'
+        capabilities = @('video_capture')
+        area_id = 'area-t014'
+        endpoint_ref = "rtsp://127.0.0.1:$script:sourceRTSPPort/synthetic-01"
+        credential_ref = 'env://synthetic'
+        desired_state = 'enabled'
+    }) @{ 'Idempotency-Key' = "t014-overflow-17-$script:runNonce" }
+    $overflowProblem = Convert-ResponseJSON $overflowResponse
+    $overflowCodeProperty = $overflowProblem.PSObject.Properties['code']
+    if ($null -eq $overflowCodeProperty) {
+        $propertyNames = @($overflowProblem.PSObject.Properties.Name) -join ','
+        throw "quota response did not contain a stable code field; properties=$propertyNames"
+    }
+    $overflowCode = [string]$overflowCodeProperty.Value
+    $pageAfterOverflow = Get-DevicePage
+    if ($overflowCode -ne 'quota_exceeded' -or @($pageAfterOverflow.items).Count -ne $sourceCount) {
+        throw 'the seventeenth enabled device did not fail closed at the site quota'
+    }
+
+    $stage = 'batch disabling 16 devices'
+    $disableEntries = Get-DeviceEntries @($deviceIDs)
+    $disableBatch = Invoke-BatchDesiredState 'disabled' $disableEntries 'disable'
+    $disableSeconds = Wait-Convergence 'disabled'
+    $disabledInventory = Get-MediaInventory $script:productionAPIPort
+
+    $stage = 'batch re-enabling 16 devices'
+    $secondEnableEntries = Get-DeviceEntries @($deviceIDs)
+    $secondEnableBatch = Invoke-BatchDesiredState 'enabled' $secondEnableEntries 'enable-2'
+    $secondEnableSeconds = Wait-Convergence 'enabled'
+    $secondEnabledInventory = Get-MediaInventory $script:productionAPIPort
+
+    $stage = 'injecting four-source fault'
+    foreach ($index in $faultIndexes) {
+        Stop-ManagedProcess $script:publishers[$index]
+    }
+    $fault = Wait-PartialFault
+    foreach ($index in $faultIndexes) {
+        $script:publishers[$index] = Start-Publisher $index
+        $managed.Add($script:publishers[$index])
+    }
+    $faultRecoverySeconds = Wait-Convergence 'enabled'
+    $fault.recovery_seconds = $faultRecoverySeconds
+    $fault.final_unconverged = 0
+
+    $stage = 'observing stable 16-stream capacity'
+    $observation = [Diagnostics.Stopwatch]::StartNew()
+    $targetSeconds = $ObservationMinutes * 60
+    $senseCPU = [Collections.Generic.List[double]]::new()
+    $senseWorking = [Collections.Generic.List[double]]::new()
+    $sensePrivate = [Collections.Generic.List[double]]::new()
+    $senseHandles = [Collections.Generic.List[double]]::new()
+    $mediaCPU = [Collections.Generic.List[double]]::new()
+    $mediaWorking = [Collections.Generic.List[double]]::new()
+    $mediaPrivate = [Collections.Generic.List[double]]::new()
+    $mediaHandles = [Collections.Generic.List[double]]::new()
+    $databaseConnections = [Collections.Generic.List[double]]::new()
+    $previousSenseCPU = $sense.Process.TotalProcessorTime.TotalSeconds
+    $previousMediaCPU = $productionMedia.Process.TotalProcessorTime.TotalSeconds
+    $observationSenseCPUStart = $previousSenseCPU
+    $observationMediaCPUStart = $previousMediaCPU
+    $previousSampleAt = 0.0
+    $initialInventory = Get-MediaInventory $script:productionAPIPort
+    $samples = 0
+    $requiredSamples = [int][Math]::Ceiling($targetSeconds / $sampleSeconds)
+    $maximumUnconverged = 0
+    while ($samples -lt $requiredSamples) {
+        $nextSampleAt = ($samples + 1) * $sampleSeconds
+        $delayMilliseconds = [int][Math]::Ceiling(($nextSampleAt - $observation.Elapsed.TotalSeconds) * 1000)
+        if ($delayMilliseconds -gt 0) {
+            Start-Sleep -Milliseconds $delayMilliseconds
+        }
+        Assert-Alive $sourceMedia
+        Assert-Alive $productionMedia
+        Assert-Alive $sense
+        foreach ($publisher in $script:publishers.Values) { Assert-Alive $publisher }
+        $elapsed = $observation.Elapsed.TotalSeconds
+        $delta = $elapsed - $previousSampleAt
+        $senseSample = Get-ProcessResourceSample $sense $previousSenseCPU $delta
+        $mediaSample = Get-ProcessResourceSample $productionMedia $previousMediaCPU $delta
+        $previousSenseCPU = $senseSample.TotalCPU
+        $previousMediaCPU = $mediaSample.TotalCPU
+        $previousSampleAt = $elapsed
+        $senseCPU.Add($senseSample.CPUPercent)
+        $senseWorking.Add($senseSample.WorkingSetMiB)
+        $sensePrivate.Add($senseSample.PrivateMiB)
+        $senseHandles.Add($senseSample.Handles)
+        $mediaCPU.Add($mediaSample.CPUPercent)
+        $mediaWorking.Add($mediaSample.WorkingSetMiB)
+        $mediaPrivate.Add($mediaSample.PrivateMiB)
+        $mediaHandles.Add($mediaSample.Handles)
+        $databaseConnections.Add([double](Get-PostgresScalar "SELECT count(*) FROM pg_stat_activity WHERE datname = '$databaseName'"))
+        $page = Get-DevicePage
+        $inventory = Get-MediaInventory $script:productionAPIPort
+        $unconverged = [int](Get-SenseMetric 'sense_reconcile_devices' '{state="unconverged"}')
+        $maximumUnconverged = [Math]::Max($maximumUnconverged, $unconverged)
+        if (@($page.items).Count -ne $sourceCount -or
+            @($page.items | Where-Object { $_.desired_state -ne 'enabled' -or $_.actual_state -ne 'online' -or -not $_.converged }).Count -ne 0 -or
+            $inventory.Configured -ne $sourceCount -or $inventory.Runtime -ne $sourceCount -or
+            $inventory.Online -ne $sourceCount -or $unconverged -ne 0) {
+            throw 'stability observation detected a non-converged stream'
+        }
+        $samples++
+    }
+    $observationSeconds = [Math]::Round($observation.Elapsed.TotalSeconds, 1)
+    $finalInventory = Get-MediaInventory $script:productionAPIPort
+    $sense.Process.Refresh()
+    $productionMedia.Process.Refresh()
+    $senseCPUTotal = $sense.Process.TotalProcessorTime.TotalSeconds - $observationSenseCPUStart
+    $mediaCPUTotal = $productionMedia.Process.TotalProcessorTime.TotalSeconds - $observationMediaCPUStart
+    $inboundDelta = [UInt64]($finalInventory.InboundBytes - $initialInventory.InboundBytes)
+    $frameErrorDelta = [UInt64]($finalInventory.FrameErrors - $initialInventory.FrameErrors)
+    $inboundMbps = if ($observationSeconds -gt 0) { ($inboundDelta * 8.0) / $observationSeconds / 1000000.0 } else { 0.0 }
+    $databaseSizeBytes = [Int64](Get-PostgresScalar "SELECT pg_database_size('$databaseName')")
+    $finalUnconverged = [int](Get-SenseMetric 'sense_reconcile_devices' '{state="unconverged"}')
+    if ($observationSeconds -lt $targetSeconds -or $finalUnconverged -ne 0 -or
+        $maximumUnconverged -ne 0 -or $samples -lt $requiredSamples) {
+        throw 'formal observation did not satisfy sampling and convergence requirements'
+    }
+
+    $memoryGiB = 0.0
+    try { $memoryGiB = (Get-CimInstance Win32_ComputerSystem).TotalPhysicalMemory / 1GB } catch {}
+    $gitCommit = (& git -C $script:repoRoot rev-parse HEAD | Out-String).Trim()
+    $success = $true
+    $resultJSON = [ordered]@{
+        success = $true
+        formal_eligible = $ObservationMinutes -ge 30
+        scope = 'laboratory_software_baseline'
+        source_count = $sourceCount
+        independent_publishers = $sourceCount
+        fixture = [ordered]@{ width = 640; height = 360; fps = 10; codec = 'H.264'; audio = $false; publish_mode = 'preencoded_copy' }
+        versions = [ordered]@{
+            repository_commit = $gitCommit
+            sense_sha256 = (Get-FileHash -LiteralPath $senseBinary -Algorithm SHA256).Hash.ToLowerInvariant()
+            mediamtx = $mediaMTXVersion
+            mediamtx_package_sha256 = $mediaMTXSHA256
+            mediamtx_executable_sha256 = $mediaMTXExecutableSHA256
+            postgres = $postgresVersion
+            ffmpeg = [string]$ffmpegVersion
+            go = $goVersion
+        }
+        host = [ordered]@{ logical_processors = [Environment]::ProcessorCount; total_memory_gib = [Math]::Round($memoryGiB, 2) }
+        quota = [ordered]@{ configured = 16; accepted_devices = 16; seventeenth_rejected = $true; error_code = 'quota_exceeded' }
+        publishers_ready_seconds = $publisherReadySeconds
+        batch = [ordered]@{
+            enable_first = $firstEnableBatch
+            disable = $disableBatch
+            enable_second = $secondEnableBatch
+        }
+        convergence_seconds = [ordered]@{
+            enable_first = $firstEnableSeconds
+            disable = $disableSeconds
+            enable_second = $secondEnableSeconds
+        }
+        configured_paths = [ordered]@{
+            after_enable_first = $firstEnabledInventory.Configured
+            after_disable = $disabledInventory.Configured
+            after_enable_second = $secondEnabledInventory.Configured
+        }
+        fault_recovery = $fault
+        observation = [ordered]@{
+            requested_minutes = $ObservationMinutes
+            seconds = $observationSeconds
+            sample_interval_seconds = $sampleSeconds
+            samples = $samples
+            maximum_unconverged = $maximumUnconverged
+            final_unconverged = $finalUnconverged
+            final_online_paths = $finalInventory.Online
+            aggregate_inbound_mbps = [Math]::Round($inboundMbps, 3)
+            inbound_frame_errors = $frameErrorDelta
+        }
+        resources = [ordered]@{
+            sense = [ordered]@{
+                cpu_average_percent = [Math]::Round((Get-Average $senseCPU), 3)
+                cpu_peak_percent = [Math]::Round((Get-Maximum $senseCPU), 3)
+                cpu_total_seconds = [Math]::Round($senseCPUTotal, 3)
+                working_set_peak_mib = [Math]::Round((Get-Maximum $senseWorking), 2)
+                private_peak_mib = [Math]::Round((Get-Maximum $sensePrivate), 2)
+                handles_peak = [int](Get-Maximum $senseHandles)
+            }
+            mediamtx = [ordered]@{
+                cpu_average_percent = [Math]::Round((Get-Average $mediaCPU), 3)
+                cpu_peak_percent = [Math]::Round((Get-Maximum $mediaCPU), 3)
+                cpu_total_seconds = [Math]::Round($mediaCPUTotal, 3)
+                working_set_peak_mib = [Math]::Round((Get-Maximum $mediaWorking), 2)
+                private_peak_mib = [Math]::Round((Get-Maximum $mediaPrivate), 2)
+                handles_peak = [int](Get-Maximum $mediaHandles)
+            }
+            postgres_peak_connections = [int](Get-Maximum $databaseConnections)
+            postgres_database_mib = [Math]::Round($databaseSizeBytes / 1MB, 2)
+        }
+        limitations = @('synthetic_sources', 'no_customer_network', 'no_recording', 'no_downstream_readers', 'no_ai_or_gpu', 'not_a_production_sla')
+    } | ConvertTo-Json -Depth 12
+}
+catch {
+    $failure = "T-014 stage '$stage' failed: $($_.Exception.Message)"
+}
+finally {
+    Stop-AllManagedProcesses @($managed)
+    if ($postgresStarted) {
+        & $script:pgCtl '-D' $pgData '-m' 'fast' '-w' 'stop' | Out-Null
+        $postgresStopped = $LASTEXITCODE -eq 0
+    }
+    if (-not $postgresStarted -or $postgresStopped) {
+        $resolvedSession = [IO.Path]::GetFullPath($script:session)
+        $expectedPrefix = $runtimeResolved.TrimEnd('\') + '\'
+        if (-not $resolvedSession.StartsWith($expectedPrefix, [StringComparison]::OrdinalIgnoreCase) -or
+            [IO.Path]::GetFileName($resolvedSession) -notlike 'session-*') {
+            throw 'refusing to clean an unexpected T-014 session path'
+        }
+        if (Test-Path -LiteralPath $resolvedSession) {
+            Remove-SessionDirectory $resolvedSession
+        }
+    }
+    else {
+        Write-Warning 'Temporary PostgreSQL did not stop; the session directory was retained for manual recovery'
+    }
+    $after5432 = @(
+        Get-NetTCPConnection -State Listen -LocalPort 5432 -ErrorAction SilentlyContinue |
+            Select-Object -ExpandProperty OwningProcess -Unique | Sort-Object
+    )
+    if (($existing5432 -join ',') -ne ($after5432 -join ',')) {
+        throw 'the existing PostgreSQL listener on port 5432 changed during T-014'
+    }
+}
+if (-not $success) {
+    throw $failure
+}
+Write-Result $resultJSON

deploy/postgres/010_reconcile_safety.sql

@@ -0,0 +1,147 @@
+-- Add fenced reconciliation claims and durable, secret-free MediaMTX path
+-- ownership/orphan reports. Runtime migrations are installed out of process.
+
+ALTER TABLE sense.reconcile_state
+    ADD COLUMN IF NOT EXISTS lease_owner text,
+    ADD COLUMN IF NOT EXISTS lease_token text,
+    ADD COLUMN IF NOT EXISTS lease_until timestamptz;
+
+DO $constraints$
+BEGIN
+    IF NOT EXISTS (
+        SELECT 1 FROM pg_constraint
+        WHERE conrelid = 'sense.reconcile_state'::regclass
+          AND conname = 'sense_reconcile_lease_all_or_none'
+    ) THEN
+        ALTER TABLE sense.reconcile_state
+            ADD CONSTRAINT sense_reconcile_lease_all_or_none CHECK (
+                (lease_owner IS NULL AND lease_token IS NULL AND lease_until IS NULL)
+                OR (btrim(lease_owner) <> '' AND btrim(lease_token) <> '' AND lease_until IS NOT NULL)
+            );
+    END IF;
+END
+$constraints$;
+
+CREATE INDEX IF NOT EXISTS sense_reconcile_lease_due_idx
+    ON sense.reconcile_state(lease_until, next_attempt_at);
+
+CREATE TABLE IF NOT EXISTS sense.media_path_ownership (
+    path_name text PRIMARY KEY,
+    device_id text NOT NULL,
+    tenant_id text NOT NULL,
+    site_id text NOT NULL,
+    first_claimed_at timestamptz NOT NULL,
+    last_confirmed_at timestamptz NOT NULL,
+    CONSTRAINT sense_media_path_ownership_not_blank CHECK (
+        btrim(path_name) <> '' AND btrim(device_id) <> ''
+        AND btrim(tenant_id) <> '' AND btrim(site_id) <> ''
+    )
+);
+ALTER TABLE sense.media_path_ownership OWNER TO sense_app;
+
+-- Keep the historical row independent from device lifecycle so a later device
+-- deletion cannot erase the evidence needed to classify an owned stale path.
+INSERT INTO sense.media_path_ownership(
+    path_name, device_id, tenant_id, site_id, first_claimed_at, last_confirmed_at
+)
+SELECT d.path_name, d.id, d.tenant_id, d.site_id, d.created_at, d.updated_at
+FROM sense.devices d
+WHERE btrim(d.path_name) <> ''
+  AND EXISTS (
+      SELECT 1 FROM sense.device_capabilities c
+      WHERE c.device_id = d.id AND c.capability = 'video_capture'
+  )
+ON CONFLICT (path_name) DO UPDATE SET
+    device_id = EXCLUDED.device_id,
+    tenant_id = EXCLUDED.tenant_id,
+    site_id = EXCLUDED.site_id,
+    last_confirmed_at = GREATEST(
+        sense.media_path_ownership.last_confirmed_at,
+        EXCLUDED.last_confirmed_at
+    );
+
+CREATE TABLE IF NOT EXISTS sense.operational_leases (
+    lease_name text PRIMARY KEY,
+    owner_id text NOT NULL,
+    fencing_token text NOT NULL,
+    lease_until timestamptz NOT NULL,
+    updated_at timestamptz NOT NULL,
+    CONSTRAINT sense_operational_lease_not_blank CHECK (
+        btrim(lease_name) <> '' AND btrim(owner_id) <> '' AND btrim(fencing_token) <> ''
+    )
+);
+ALTER TABLE sense.operational_leases OWNER TO sense_app;
+
+CREATE TABLE IF NOT EXISTS sense.orphan_scan_runs (
+    id text PRIMARY KEY,
+    instance_id text NOT NULL,
+    observed_count integer NOT NULL,
+    owned_stale_count integer NOT NULL,
+    unowned_count integer NOT NULL,
+    safety_allowed boolean NOT NULL,
+    safety_reason text NOT NULL,
+    completed_at timestamptz NOT NULL,
+    expires_at timestamptz NOT NULL,
+    CONSTRAINT sense_orphan_scan_id CHECK (id ~ '^scan_[0-9A-HJKMNP-TV-Z]{26}$'),
+    CONSTRAINT sense_orphan_scan_counts CHECK (
+        observed_count >= 0 AND owned_stale_count >= 0 AND unowned_count >= 0
+        AND owned_stale_count + unowned_count <= observed_count
+    ),
+    CONSTRAINT sense_orphan_scan_not_blank CHECK (
+        btrim(instance_id) <> '' AND btrim(safety_reason) <> ''
+    ),
+    CONSTRAINT sense_orphan_scan_expiry CHECK (expires_at > completed_at)
+);
+ALTER TABLE sense.orphan_scan_runs OWNER TO sense_app;
+
+CREATE TABLE IF NOT EXISTS sense.orphan_scan_findings (
+    scan_id text NOT NULL REFERENCES sense.orphan_scan_runs(id) ON DELETE CASCADE,
+    path_name text NOT NULL,
+    classification text NOT NULL,
+    device_id text,
+    PRIMARY KEY (scan_id, path_name),
+    UNIQUE (scan_id, path_name, classification),
+    CONSTRAINT sense_orphan_finding_classification CHECK (
+        classification IN ('owned_stale', 'unowned')
+    ),
+    CONSTRAINT sense_orphan_finding_not_blank CHECK (
+        btrim(path_name) <> '' AND (device_id IS NULL OR btrim(device_id) <> '')
+    ),
+    CONSTRAINT sense_orphan_finding_owner_shape CHECK (
+        (classification = 'owned_stale' AND device_id IS NOT NULL)
+        OR (classification = 'unowned' AND device_id IS NULL)
+    )
+);
+ALTER TABLE sense.orphan_scan_findings OWNER TO sense_app;
+
+CREATE TABLE IF NOT EXISTS sense.orphan_cleanup_actions (
+    scan_id text NOT NULL REFERENCES sense.orphan_scan_runs(id),
+    path_name text NOT NULL,
+    classification text NOT NULL DEFAULT 'owned_stale',
+    actor_id text NOT NULL,
+    status text NOT NULL,
+    error_code text,
+    attempted_at timestamptz NOT NULL,
+    PRIMARY KEY (scan_id, path_name),
+    FOREIGN KEY (scan_id, path_name, classification)
+        REFERENCES sense.orphan_scan_findings(scan_id, path_name, classification),
+    CONSTRAINT sense_orphan_cleanup_owned_only CHECK (classification = 'owned_stale'),
+    CONSTRAINT sense_orphan_cleanup_status CHECK (status IN ('deleted', 'failed')),
+    CONSTRAINT sense_orphan_cleanup_not_blank CHECK (
+        btrim(path_name) <> '' AND btrim(actor_id) <> ''
+        AND (error_code IS NULL OR btrim(error_code) <> '')
+    ),
+    CONSTRAINT sense_orphan_cleanup_error_shape CHECK (
+        (status = 'deleted' AND error_code IS NULL)
+        OR (status = 'failed' AND error_code IS NOT NULL)
+    )
+);
+ALTER TABLE sense.orphan_cleanup_actions OWNER TO sense_app;
+
+CREATE INDEX IF NOT EXISTS sense_orphan_scan_completed_idx
+    ON sense.orphan_scan_runs(completed_at);
+CREATE INDEX IF NOT EXISTS sense_orphan_cleanup_status_idx
+    ON sense.orphan_cleanup_actions(scan_id, status);
+
+INSERT INTO sense.schema_migrations(version) VALUES (5)
+ON CONFLICT (version) DO NOTHING;

deploy/postgres/011_privileges_reconcile_safety.sql

@@ -0,0 +1,17 @@
+-- Extend the least-privilege boundary to reconciliation and orphan state.
+
+REVOKE ALL ON TABLE
+    sense.media_path_ownership,
+    sense.operational_leases,
+    sense.orphan_scan_runs,
+    sense.orphan_scan_findings,
+    sense.orphan_cleanup_actions
+FROM PUBLIC;
+
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE
+    sense.media_path_ownership,
+    sense.operational_leases,
+    sense.orphan_scan_runs,
+    sense.orphan_scan_findings,
+    sense.orphan_cleanup_actions
+TO sense_app;

deploy/postgres/012_bell_events.sql

@@ -0,0 +1,115 @@
+-- Bell v3 immutable event facts and append-only outcomes.
+-- bell_app remains the migration/object owner; bell_runtime is a NOLOGIN
+-- least-privilege group for the Bell process.
+
+DO $role$
+DECLARE
+    role_record pg_roles%ROWTYPE;
+BEGIN
+    SELECT * INTO role_record FROM pg_roles WHERE rolname = 'bell_runtime';
+    IF NOT FOUND THEN
+        CREATE ROLE bell_runtime NOLOGIN NOSUPERUSER NOCREATEDB NOCREATEROLE NOREPLICATION;
+    ELSIF role_record.rolcanlogin OR role_record.rolsuper OR role_record.rolcreatedb
+       OR role_record.rolcreaterole OR role_record.rolreplication THEN
+        RAISE EXCEPTION 'existing bell_runtime role has unsafe attributes';
+    END IF;
+    IF pg_has_role('bell_runtime', 'bell_app', 'MEMBER')
+       OR pg_has_role('bell_runtime', 'sense_app', 'MEMBER') THEN
+        RAISE EXCEPTION 'bell_runtime must not inherit migration or Sense roles';
+    END IF;
+END
+$role$;
+
+CREATE OR REPLACE FUNCTION bell.reject_immutable_change()
+RETURNS trigger
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = pg_catalog, bell
+AS $function$
+BEGIN
+    RAISE EXCEPTION 'Bell immutable facts cannot be updated or deleted';
+END
+$function$;
+ALTER FUNCTION bell.reject_immutable_change() OWNER TO bell_app;
+
+CREATE TABLE IF NOT EXISTS bell.events (
+    id text PRIMARY KEY,
+    tenant_id bigint NOT NULL,
+    site_id bigint NOT NULL,
+    device_id bigint NOT NULL,
+    source_event_id text NOT NULL,
+    kind text NOT NULL,
+    severity text NOT NULL,
+    occurred_at timestamptz NOT NULL,
+    detected_at timestamptz NOT NULL,
+    payload_hash bytea NOT NULL,
+    payload jsonb NOT NULL,
+    created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+    CONSTRAINT bell_event_id_format CHECK (id ~ '^evt_[0-9A-HJKMNP-TV-Z]{26}$'),
+    CONSTRAINT bell_event_ids_positive CHECK (tenant_id >= 1 AND site_id >= 1 AND device_id >= 1),
+    CONSTRAINT bell_event_source_id CHECK (source_event_id ~ '^[A-Za-z0-9_-]{1,128}$'),
+    CONSTRAINT bell_event_kind CHECK (kind ~ '^[a-z][a-z0-9_]{2,63}$'),
+    CONSTRAINT bell_event_severity CHECK (severity IN ('low', 'medium', 'high', 'critical')),
+    CONSTRAINT bell_event_time_order CHECK (detected_at >= occurred_at),
+    CONSTRAINT bell_event_hash_length CHECK (octet_length(payload_hash) = 32),
+    CONSTRAINT bell_event_payload_object CHECK (jsonb_typeof(payload) = 'object'),
+    CONSTRAINT bell_event_payload_identity CHECK (
+        payload ->> 'id' = id
+        AND (payload ->> 'tenant_id')::bigint = tenant_id
+        AND (payload ->> 'site_id')::bigint = site_id
+        AND (payload ->> 'device_id')::bigint = device_id
+        AND payload ->> 'source_event_id' = source_event_id
+        AND payload ->> 'kind' = kind
+        AND payload ->> 'severity' = severity
+    )
+);
+ALTER TABLE bell.events OWNER TO bell_app;
+
+DROP TRIGGER IF EXISTS bell_events_immutable ON bell.events;
+CREATE TRIGGER bell_events_immutable
+BEFORE UPDATE OR DELETE ON bell.events
+FOR EACH ROW EXECUTE FUNCTION bell.reject_immutable_change();
+
+CREATE INDEX IF NOT EXISTS bell_events_scope_time_idx
+    ON bell.events(tenant_id, site_id, occurred_at DESC, id DESC);
+CREATE INDEX IF NOT EXISTS bell_events_device_time_idx
+    ON bell.events(tenant_id, site_id, device_id, occurred_at DESC, id DESC);
+CREATE INDEX IF NOT EXISTS bell_events_kind_time_idx
+    ON bell.events(tenant_id, site_id, kind, occurred_at DESC, id DESC);
+CREATE INDEX IF NOT EXISTS bell_events_source_lookup_idx
+    ON bell.events(tenant_id, site_id, device_id, source_event_id);
+
+CREATE TABLE IF NOT EXISTS bell.event_outcomes (
+    id text PRIMARY KEY,
+    event_id text NOT NULL REFERENCES bell.events(id),
+    outcome text NOT NULL,
+    outcome_source text NOT NULL,
+    reason text,
+    actor_type text NOT NULL,
+    actor_id text NOT NULL,
+    occurred_at timestamptz NOT NULL,
+    record_hash bytea NOT NULL,
+    received_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+    CONSTRAINT bell_event_outcome_id_format CHECK (id ~ '^out_[0-9A-HJKMNP-TV-Z]{26}$'),
+    CONSTRAINT bell_event_outcome_value CHECK (
+        outcome IN ('unknown', 'true_positive', 'false_positive', 'subject_recovered', 'duplicate', 'test')
+    ),
+    CONSTRAINT bell_event_outcome_source CHECK (outcome_source IN ('auto', 'manual')),
+    CONSTRAINT bell_event_outcome_actor CHECK (
+        actor_type IN ('user', 'service', 'system') AND btrim(actor_id) <> ''
+    ),
+    CONSTRAINT bell_event_outcome_reason CHECK (reason IS NULL OR char_length(reason) <= 500),
+    CONSTRAINT bell_event_outcome_hash_length CHECK (octet_length(record_hash) = 32)
+);
+ALTER TABLE bell.event_outcomes OWNER TO bell_app;
+
+DROP TRIGGER IF EXISTS bell_event_outcomes_immutable ON bell.event_outcomes;
+CREATE TRIGGER bell_event_outcomes_immutable
+BEFORE UPDATE OR DELETE ON bell.event_outcomes
+FOR EACH ROW EXECUTE FUNCTION bell.reject_immutable_change();
+
+CREATE INDEX IF NOT EXISTS bell_event_outcomes_event_time_idx
+    ON bell.event_outcomes(event_id, occurred_at, id);
+
+INSERT INTO bell.schema_migrations(version) VALUES (3)
+ON CONFLICT (version) DO NOTHING;

deploy/postgres/013_privileges_bell_events.sql

@@ -0,0 +1,15 @@
+-- Runtime Bell can append/read event facts but cannot rewrite, delete or
+-- truncate them. Object ownership stays with the offline migration role.
+
+REVOKE ALL ON FUNCTION bell.reject_immutable_change() FROM PUBLIC;
+REVOKE ALL ON TABLE bell.events, bell.event_outcomes FROM PUBLIC;
+REVOKE ALL ON TABLE bell.events, bell.event_outcomes FROM bell_runtime;
+
+GRANT USAGE ON SCHEMA bell TO bell_runtime;
+GRANT SELECT ON TABLE bell.schema_migrations TO bell_runtime;
+GRANT SELECT, INSERT ON TABLE bell.events, bell.event_outcomes TO bell_runtime;
+
+ALTER DEFAULT PRIVILEGES FOR ROLE bell_app IN SCHEMA bell
+    REVOKE ALL ON TABLES FROM PUBLIC;
+ALTER DEFAULT PRIVILEGES FOR ROLE bell_app IN SCHEMA bell
+    REVOKE ALL ON FUNCTIONS FROM PUBLIC;

deploy/postgres/014_audit_relay.sql

@@ -0,0 +1,130 @@
+-- Sense Outbox relay fencing and Bell global audit facts.
+
+ALTER TABLE sense.device_operation_outbox
+    ADD COLUMN IF NOT EXISTS relay_lease_owner text,
+    ADD COLUMN IF NOT EXISTS relay_lease_token bigint NOT NULL DEFAULT 0,
+    ADD COLUMN IF NOT EXISTS relay_lease_until timestamptz,
+    ADD COLUMN IF NOT EXISTS last_error_code text,
+    ADD COLUMN IF NOT EXISTS dead_lettered_at timestamptz;
+
+ALTER TABLE sense.device_operation_outbox
+    DROP CONSTRAINT IF EXISTS sense_outbox_relay_lease_pair;
+ALTER TABLE sense.device_operation_outbox
+    ADD CONSTRAINT sense_outbox_relay_lease_pair CHECK (
+        (relay_lease_owner IS NULL AND relay_lease_until IS NULL)
+        OR (relay_lease_owner IS NOT NULL AND btrim(relay_lease_owner) <> ''
+            AND relay_lease_until IS NOT NULL)
+    );
+ALTER TABLE sense.device_operation_outbox
+    DROP CONSTRAINT IF EXISTS sense_outbox_relay_token_nonnegative;
+ALTER TABLE sense.device_operation_outbox
+    ADD CONSTRAINT sense_outbox_relay_token_nonnegative CHECK (relay_lease_token >= 0);
+ALTER TABLE sense.device_operation_outbox
+    DROP CONSTRAINT IF EXISTS sense_outbox_relay_error_length;
+ALTER TABLE sense.device_operation_outbox
+    ADD CONSTRAINT sense_outbox_relay_error_length CHECK (
+        last_error_code IS NULL OR (
+            char_length(last_error_code) BETWEEN 1 AND 64
+            AND last_error_code ~ '^[a-z][a-z0-9_]*$'
+        )
+    );
+ALTER TABLE sense.device_operation_outbox
+    DROP CONSTRAINT IF EXISTS sense_outbox_relay_terminal_state;
+ALTER TABLE sense.device_operation_outbox
+    ADD CONSTRAINT sense_outbox_relay_terminal_state CHECK (
+        delivered_at IS NULL OR dead_lettered_at IS NULL
+    );
+
+CREATE INDEX IF NOT EXISTS sense_outbox_relay_due_idx
+    ON sense.device_operation_outbox(
+        COALESCE(next_attempt_at, available_at), event_id
+    )
+    WHERE delivered_at IS NULL AND dead_lettered_at IS NULL;
+
+CREATE TABLE IF NOT EXISTS bell.audit_events (
+    source_system text NOT NULL,
+    event_id text NOT NULL,
+    schema_version smallint NOT NULL,
+    event_type text NOT NULL,
+    tenant_id text NOT NULL,
+    site_id text NOT NULL,
+    device_id text NOT NULL,
+    actor_type text NOT NULL,
+    actor_id text NOT NULL,
+    reason text,
+    trace_id text,
+    aggregate_generation bigint NOT NULL,
+    quota_source_version bigint,
+    area_policy_source_version bigint,
+    payload jsonb NOT NULL,
+    occurred_at timestamptz NOT NULL,
+    received_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+    record_hash bytea NOT NULL,
+    PRIMARY KEY (source_system, event_id),
+    CONSTRAINT bell_audit_source_system CHECK (source_system = 'sense'),
+    CONSTRAINT bell_audit_event_id CHECK (event_id ~ '^audit_[0-9a-f]{32}$'),
+    CONSTRAINT bell_audit_schema_version CHECK (schema_version IN (1, 2)),
+    CONSTRAINT bell_audit_event_type CHECK (event_type IN (
+        'device.created',
+        'device.desired_state.accepted',
+        'device.configuration.accepted'
+    )),
+    CONSTRAINT bell_audit_identity_not_blank CHECK (
+        btrim(tenant_id) <> '' AND btrim(site_id) <> '' AND btrim(device_id) <> ''
+        AND btrim(actor_id) <> ''
+    ),
+    CONSTRAINT bell_audit_actor_type CHECK (actor_type IN ('user', 'service', 'system')),
+    CONSTRAINT bell_audit_generation_positive CHECK (aggregate_generation >= 1),
+    CONSTRAINT bell_audit_projection_versions CHECK (
+        (quota_source_version IS NULL OR quota_source_version >= 1)
+        AND (area_policy_source_version IS NULL OR area_policy_source_version >= 1)
+    ),
+    CONSTRAINT bell_audit_reason_length CHECK (reason IS NULL OR char_length(reason) <= 500),
+    CONSTRAINT bell_audit_trace_length CHECK (trace_id IS NULL OR char_length(trace_id) <= 128),
+    CONSTRAINT bell_audit_payload_object CHECK (jsonb_typeof(payload) = 'object'),
+    CONSTRAINT bell_audit_record_hash_length CHECK (octet_length(record_hash) = 32)
+);
+ALTER TABLE bell.audit_events OWNER TO bell_app;
+
+DROP TRIGGER IF EXISTS bell_audit_events_immutable ON bell.audit_events;
+CREATE TRIGGER bell_audit_events_immutable
+BEFORE UPDATE OR DELETE ON bell.audit_events
+FOR EACH ROW EXECUTE FUNCTION bell.reject_immutable_change();
+
+CREATE INDEX IF NOT EXISTS bell_audit_scope_time_idx
+    ON bell.audit_events(tenant_id, site_id, occurred_at DESC, event_id DESC);
+CREATE INDEX IF NOT EXISTS bell_audit_device_time_idx
+    ON bell.audit_events(tenant_id, site_id, device_id, occurred_at DESC, event_id DESC);
+
+CREATE TABLE IF NOT EXISTS bell.audit_relay_receipts (
+    key_id text NOT NULL,
+    nonce text NOT NULL,
+    request_hash bytea NOT NULL,
+    response_status integer NOT NULL,
+    response_body jsonb NOT NULL,
+    received_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+    expires_at timestamptz NOT NULL,
+    PRIMARY KEY (key_id, nonce),
+    CONSTRAINT bell_audit_receipt_key_id CHECK (
+        char_length(key_id) BETWEEN 1 AND 64 AND key_id ~ '^[A-Za-z0-9][A-Za-z0-9._-]*$'
+    ),
+    CONSTRAINT bell_audit_receipt_nonce CHECK (
+        char_length(nonce) BETWEEN 22 AND 64 AND nonce ~ '^[A-Za-z0-9_-]+$'
+    ),
+    CONSTRAINT bell_audit_receipt_hash_length CHECK (octet_length(request_hash) = 32),
+    CONSTRAINT bell_audit_receipt_status CHECK (response_status = 200),
+    CONSTRAINT bell_audit_receipt_body CHECK (jsonb_typeof(response_body) = 'object'),
+    CONSTRAINT bell_audit_receipt_ttl CHECK (
+        expires_at >= received_at + interval '10 minutes'
+        AND expires_at <= received_at + interval '11 minutes'
+    )
+);
+ALTER TABLE bell.audit_relay_receipts OWNER TO bell_app;
+
+CREATE INDEX IF NOT EXISTS bell_audit_receipt_expiry_idx
+    ON bell.audit_relay_receipts(expires_at, key_id, nonce);
+
+INSERT INTO bell.schema_migrations(version) VALUES (4)
+ON CONFLICT (version) DO NOTHING;
+INSERT INTO sense.schema_migrations(version) VALUES (6)
+ON CONFLICT (version) DO NOTHING;

deploy/postgres/015_privileges_audit_relay.sql

@@ -0,0 +1,11 @@
+-- Bell runtime may append global audit facts and maintain only short-lived
+-- idempotency receipts. Sense keeps ownership of its local Outbox.
+
+REVOKE ALL ON TABLE bell.audit_events, bell.audit_relay_receipts FROM PUBLIC;
+REVOKE ALL ON TABLE bell.audit_events, bell.audit_relay_receipts FROM bell_runtime;
+
+GRANT SELECT, INSERT ON TABLE bell.audit_events TO bell_runtime;
+GRANT SELECT, INSERT, DELETE ON TABLE bell.audit_relay_receipts TO bell_runtime;
+
+REVOKE ALL ON TABLE bell.audit_events, bell.audit_relay_receipts FROM sense_app;
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE sense.device_operation_outbox TO sense_app;

deploy/postgres/016_event_ingress.sql

@@ -0,0 +1,108 @@
+-- Bell v5 Brain event ingress identity bindings and durable receipts.
+
+CREATE TABLE IF NOT EXISTS bell.event_ingress_bindings (
+    producer_id text NOT NULL,
+    tenant_id bigint NOT NULL,
+    site_id bigint NOT NULL,
+    device_id bigint NOT NULL,
+    logical_tenant_id text NOT NULL,
+    logical_site_id text NOT NULL,
+    logical_device_id text NOT NULL,
+    logical_area_id text NOT NULL,
+    modality text NOT NULL,
+    enabled boolean NOT NULL DEFAULT true,
+    created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+    updated_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+    PRIMARY KEY (producer_id, tenant_id, site_id, device_id),
+    CONSTRAINT bell_ingress_binding_site_fk
+        FOREIGN KEY (logical_tenant_id, logical_site_id)
+        REFERENCES bell.sites(tenant_id, id),
+    CONSTRAINT bell_ingress_binding_area_fk
+        FOREIGN KEY (logical_tenant_id, logical_area_id)
+        REFERENCES bell.areas(tenant_id, id),
+    CONSTRAINT bell_ingress_binding_device_fk
+        FOREIGN KEY (logical_tenant_id, logical_site_id, logical_device_id)
+        REFERENCES sense.devices(tenant_id, site_id, id),
+    CONSTRAINT bell_ingress_binding_numeric_ids CHECK (
+        tenant_id >= 1 AND site_id >= 1 AND device_id >= 1
+    ),
+    CONSTRAINT bell_ingress_binding_producer CHECK (
+        char_length(producer_id) BETWEEN 1 AND 64
+        AND producer_id ~ '^[A-Za-z0-9][A-Za-z0-9._-]*$'
+    ),
+    CONSTRAINT bell_ingress_binding_logical_ids CHECK (
+        btrim(logical_tenant_id) <> '' AND btrim(logical_site_id) <> ''
+        AND btrim(logical_device_id) <> '' AND btrim(logical_area_id) <> ''
+    ),
+    CONSTRAINT bell_ingress_binding_modality CHECK (
+        modality IN ('video', 'radar', 'contact', 'button', 'wearable', 'other')
+    )
+);
+ALTER TABLE bell.event_ingress_bindings OWNER TO bell_app;
+
+CREATE INDEX IF NOT EXISTS bell_event_ingress_binding_numeric_idx
+    ON bell.event_ingress_bindings(tenant_id, site_id, device_id)
+    WHERE enabled;
+
+CREATE TABLE IF NOT EXISTS bell.event_ingress_receipts (
+    producer_id text NOT NULL,
+    source_event_id text NOT NULL,
+    candidate_hash bytea NOT NULL,
+    event_id text NOT NULL REFERENCES bell.events(id),
+    received_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+    PRIMARY KEY (producer_id, source_event_id),
+    CONSTRAINT bell_ingress_receipt_producer CHECK (
+        char_length(producer_id) BETWEEN 1 AND 64
+        AND producer_id ~ '^[A-Za-z0-9][A-Za-z0-9._-]*$'
+    ),
+    CONSTRAINT bell_ingress_receipt_source CHECK (
+        source_event_id ~ '^[A-Za-z0-9_-]{1,128}$'
+    ),
+    CONSTRAINT bell_ingress_receipt_hash CHECK (octet_length(candidate_hash) = 32),
+    CONSTRAINT bell_ingress_receipt_event_id CHECK (
+        event_id ~ '^evt_[0-9A-HJKMNP-TV-Z]{26}$'
+    )
+);
+ALTER TABLE bell.event_ingress_receipts OWNER TO bell_app;
+
+DROP TRIGGER IF EXISTS bell_event_ingress_receipts_immutable
+    ON bell.event_ingress_receipts;
+CREATE TRIGGER bell_event_ingress_receipts_immutable
+BEFORE UPDATE OR DELETE ON bell.event_ingress_receipts
+FOR EACH ROW EXECUTE FUNCTION bell.reject_immutable_change();
+
+CREATE INDEX IF NOT EXISTS bell_event_ingress_receipt_event_idx
+    ON bell.event_ingress_receipts(event_id);
+
+CREATE TABLE IF NOT EXISTS bell.event_ingress_nonces (
+    key_id text NOT NULL,
+    nonce text NOT NULL,
+    request_hash bytea NOT NULL,
+    response_status integer NOT NULL,
+    response_body jsonb NOT NULL,
+    received_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+    expires_at timestamptz NOT NULL,
+    PRIMARY KEY (key_id, nonce),
+    CONSTRAINT bell_ingress_nonce_key CHECK (
+        char_length(key_id) BETWEEN 1 AND 64
+        AND key_id ~ '^[A-Za-z0-9][A-Za-z0-9._-]*$'
+    ),
+    CONSTRAINT bell_ingress_nonce_value CHECK (
+        char_length(nonce) BETWEEN 22 AND 64
+        AND nonce ~ '^[A-Za-z0-9_-]+$'
+    ),
+    CONSTRAINT bell_ingress_nonce_hash CHECK (octet_length(request_hash) = 32),
+    CONSTRAINT bell_ingress_nonce_status CHECK (response_status IN (200, 201)),
+    CONSTRAINT bell_ingress_nonce_body CHECK (jsonb_typeof(response_body) = 'object'),
+    CONSTRAINT bell_ingress_nonce_ttl CHECK (
+        expires_at >= received_at + interval '10 minutes'
+        AND expires_at <= received_at + interval '11 minutes'
+    )
+);
+ALTER TABLE bell.event_ingress_nonces OWNER TO bell_app;
+
+CREATE INDEX IF NOT EXISTS bell_event_ingress_nonce_expiry_idx
+    ON bell.event_ingress_nonces(expires_at, key_id, nonce);
+
+INSERT INTO bell.schema_migrations(version) VALUES (5)
+ON CONFLICT (version) DO NOTHING;

deploy/postgres/017_privileges_event_ingress.sql

@@ -0,0 +1,25 @@
+-- Bell runtime may read controlled identity bindings, append events/source
+-- receipts and maintain only short-lived nonce receipts.
+
+REVOKE ALL ON TABLE bell.event_ingress_bindings,
+    bell.event_ingress_receipts, bell.event_ingress_nonces FROM PUBLIC;
+REVOKE ALL ON TABLE bell.event_ingress_bindings,
+    bell.event_ingress_receipts, bell.event_ingress_nonces FROM bell_runtime;
+
+GRANT SELECT ON TABLE bell.event_ingress_bindings TO bell_runtime;
+GRANT SELECT, INSERT ON TABLE bell.event_ingress_receipts TO bell_runtime;
+GRANT SELECT, INSERT, DELETE ON TABLE bell.event_ingress_nonces TO bell_runtime;
+
+-- Column grants deliberately exclude endpoint_ref, credential_ref,
+-- profile_token and path_name.
+GRANT USAGE ON SCHEMA sense TO bell_runtime;
+REVOKE ALL ON TABLE sense.devices FROM bell_runtime;
+GRANT SELECT (id, tenant_id, site_id, area_id, modality)
+    ON TABLE sense.devices TO bell_runtime;
+GRANT SELECT (tenant_id, id, deleted_at)
+    ON TABLE bell.sites TO bell_runtime;
+GRANT SELECT (tenant_id, site_id, id, capture_policy, deleted_at)
+    ON TABLE bell.areas TO bell_runtime;
+
+REVOKE ALL ON TABLE bell.event_ingress_bindings,
+    bell.event_ingress_receipts, bell.event_ingress_nonces FROM sense_app;

deploy/postgres/README.md

@@ -1,6 +1,6 @@
 # YoVision PostgreSQL 初始化
 
-本目录实现 T-009～T-011 的 PostgreSQL `17.10` schema。SQL 必须按文件名前缀顺序执行：`001`～`004` 创建 NOLOGIN 权限角色、Bell/Sense 初始对象和配额权限；`005`～`007` 增量增加 Area 与审计；`008`～`009` 增加 Control API 的资源版本、write-only profile token、24 小时幂等收据、batch operation 和对应最小权限。全部 SQL 可重放。应用登录角色及其密码由部署环境或密钥系统创建，并分别加入 `bell_app`、`sense_app`；仓库不保存登录凭据。
+本目录实现 T-009～T-012、T-015～T-016、T-019 的 PostgreSQL `17.10` schema。SQL 必须按文件名前缀顺序执行：`001`～`004` 创建 NOLOGIN 权限角色、Bell/Sense 初始对象和配额权限；`005`～`007` 增量增加 Area 与本地审计；`008`～`009` 增加 Control API 状态；`010`～`011` 增加调和 fencing、MediaMTX Path 历史归属、孤儿报告/受控处置结果；`012`～`013` 增加 Bell 不可变事件、append-only outcome 和独立 `bell_runtime` 最小权限；`014`～`015` 增加审计 relay；`016`～`017` 增加 Brain 事件身份绑定、永久来源收据、短期 nonce 和最小权限。全部 SQL 可重放。对象 owner/迁移角色为 `bell_app`/`sense_app`；应用登录角色及密码由部署环境或密钥系统创建，Sense 登录加入 `sense_app`，Bell 运行登录只加入 `bell_runtime`，仓库不保存登录凭据。
 
 生产/共享实例必须由管理员先备份并在 YoVision 专用数据库中执行。Sense 进程不会用高权限自动建库或建角色。示例只使用私有环境变量，不把实际 DSN 写入脚本或日志：
 
@@ -20,10 +20,14 @@ Get-ChildItem deploy/postgres/[0-9][0-9][0-9]_*.sql |
 - `bell_app` 拥有 `bell.sites`/`bell.areas`、版本 trigger、`bell.site_quota_v1` 和 `bell.area_policy_v1`。
 - `sense_app` 拥有 `sense` schema，只获得 `bell` schema 的 `USAGE` 和两个投影视图的 `SELECT`。
 - `sense_app` 对 Bell 源表、Bell migration 表和 trigger function 没有权限；启动检查发现权限过宽时拒绝运行。
-- `sense.device_operation_outbox` 是本地持久化审计事实，不是 Bell 全局审计真相；relay 的传输、签名、确认和留存尚未实现。
+- `sense.device_operation_outbox` 是本地持久化队列，Bell 全局审计真相只写入 `bell.audit_events`。Sense 只领取/确认本地行，不获得 Bell 表权限；Bell 只通过签名 HTTP ingress 收取，不读取 Outbox。
+- `bell.audit_events` 与事件事实一样不可更新/删除；`bell.audit_relay_receipts` 只为 10 分钟 nonce 幂等窗口保留，Bell runtime 仅可在这张限定表中查询、插入和清理过期记录。
+- `bell.events` 与 `bell.event_outcomes` 由 `bell_app` 拥有；`bell_runtime` 只获得 `SELECT/INSERT`，没有 owner、`UPDATE`、`DELETE` 或 `TRUNCATE` 权限，数据库 trigger 再拒绝 owner 路径的意外事实改写。
+- `bell.event_ingress_bindings` 由管理员维护并引用当前 Bell Site/Area 和 Sense Device；Bell runtime 只读绑定及 Sense 设备的逻辑 ID/Area/modality 列，不可读取 endpoint、credential、profile token 或 MediaMTX path。`event_ingress_receipts` 永久只追加；只有 `event_ingress_nonces` 可按 10 分钟 TTL 清理。
 - `sense.control_idempotency_receipts` 不保存原始 Idempotency-Key，只保存 scope/request SHA-256 和脱敏响应快照；`batch_operations`/items 只保存逻辑 ID、状态和稳定错误，不保存连接秘密。
+- 调和与孤儿租约使用 PostgreSQL `clock_timestamp()` 和 fencing token；过期 worker 不能提交完成/失败或扫描报告。`media_path_ownership`、扫描和处置表不保存 endpoint、credential 或 source URI；数据库约束禁止为 `unowned` finding 写删除结果。
 - PUBLIC 对两个业务 schema 的表和函数没有权限。
 
 ## 恢复
 
-T-009～T-011 不迁移或删除现有 SQLite 数据，默认运行配置也仍为 SQLite。SQLite 不具备生产 Area/Outbox/Control API 一致性，业务路由不会在 SQLite 上注册。若 PostgreSQL 切换验证失败，先关闭 Control API feature flag；需要实验室回退时停止 PostgreSQL 模式进程并恢复 SQLite DSN，不得误报为生产语义等价。schema 不提供自动 down migration；需要移除时由管理员先备份，再只删除明确确认的 YoVision 专用数据库，禁止对共享实例做模糊或递归清理。
+T-009～T-012 不迁移或删除现有 SQLite 数据，默认运行配置也仍为 SQLite。SQLite 不具备生产 Area/Outbox/Control API、多实例租约或孤儿处置一致性，业务路由不会在 SQLite 上注册。若 PostgreSQL 切换验证失败，先关闭 Control API 和孤儿扫描；需要实验室回退时停止 PostgreSQL 模式进程并恢复 SQLite DSN，不得误报为生产语义等价。schema 不提供自动 down migration；需要移除时由管理员先备份，再只删除明确确认的 YoVision 专用数据库，禁止对共享实例做模糊或递归清理。

deploy/postgres/tests/assertions.sql

@@ -71,11 +71,33 @@ BEGIN
        OR NOT has_table_privilege('sense_app', 'sense.device_operation_outbox', 'DELETE') THEN
         RAISE EXCEPTION 'sense_app lacks access to its local audit Outbox';
     END IF;
-    IF (SELECT max(version) FROM bell.schema_migrations) <> 2
-       OR (SELECT max(version) FROM sense.schema_migrations) <> 4 THEN
+    IF (SELECT max(version) FROM bell.schema_migrations) <> 5
+       OR (SELECT max(version) FROM sense.schema_migrations) <> 6 THEN
         RAISE EXCEPTION 'schema migration version drift';
     END IF;
 
+    IF NOT EXISTS (
+        SELECT 1 FROM pg_roles
+        WHERE rolname = 'bell_runtime' AND NOT rolcanlogin AND NOT rolsuper
+          AND NOT rolcreatedb AND NOT rolcreaterole AND NOT rolreplication
+    ) THEN
+        RAISE EXCEPTION 'bell_runtime role is missing or unsafe';
+    END IF;
+    IF NOT has_table_privilege('yovision_t015_bell', 'bell.events', 'SELECT,INSERT')
+       OR NOT has_table_privilege('yovision_t015_bell', 'bell.event_outcomes', 'SELECT,INSERT')
+       OR has_table_privilege('yovision_t015_bell', 'bell.events', 'UPDATE')
+       OR has_table_privilege('yovision_t015_bell', 'bell.events', 'DELETE')
+       OR has_table_privilege('yovision_t015_bell', 'bell.events', 'TRUNCATE')
+       OR has_table_privilege('yovision_t015_bell', 'bell.event_outcomes', 'UPDATE')
+       OR has_table_privilege('yovision_t015_bell', 'bell.event_outcomes', 'DELETE')
+       OR has_table_privilege('yovision_t015_bell', 'bell.event_outcomes', 'TRUNCATE') THEN
+        RAISE EXCEPTION 'Bell runtime violates immutable event privileges';
+    END IF;
+    IF has_table_privilege('public', 'bell.events', 'SELECT,INSERT,UPDATE,DELETE,TRUNCATE')
+       OR has_table_privilege('public', 'bell.event_outcomes', 'SELECT,INSERT,UPDATE,DELETE,TRUNCATE') THEN
+        RAISE EXCEPTION 'Bell event facts leaked to PUBLIC';
+    END IF;
+
     INSERT INTO bell.sites(tenant_id, id, name)
     VALUES ('assertion-tenant', 'assertion-site', 'Assertion Site')
     RETURNING max_video_channels, version INTO default_quota, initial_version;
@@ -129,9 +151,9 @@ $assertions$;
 
 DO $control_api$
 BEGIN
-    IF NOT has_table_privilege('yovision_t011_sense', 'sense.control_idempotency_receipts', 'SELECT,INSERT,UPDATE,DELETE')
-       OR NOT has_table_privilege('yovision_t011_sense', 'sense.batch_operations', 'SELECT,INSERT,UPDATE,DELETE')
-       OR NOT has_table_privilege('yovision_t011_sense', 'sense.batch_operation_items', 'SELECT,INSERT,UPDATE,DELETE') THEN
+    IF NOT has_table_privilege('yovision_t012_sense', 'sense.control_idempotency_receipts', 'SELECT,INSERT,UPDATE,DELETE')
+       OR NOT has_table_privilege('yovision_t012_sense', 'sense.batch_operations', 'SELECT,INSERT,UPDATE,DELETE')
+       OR NOT has_table_privilege('yovision_t012_sense', 'sense.batch_operation_items', 'SELECT,INSERT,UPDATE,DELETE') THEN
         RAISE EXCEPTION 'Sense runtime lacks Control API table privileges';
     END IF;
     IF has_table_privilege('public', 'sense.control_idempotency_receipts', 'SELECT')
@@ -151,3 +173,84 @@ BEGIN
     END IF;
 END
 $control_api$;
+
+DO $reconcile_safety$
+DECLARE
+    target text;
+BEGIN
+    FOREACH target IN ARRAY ARRAY[
+        'sense.media_path_ownership',
+        'sense.operational_leases',
+        'sense.orphan_scan_runs',
+        'sense.orphan_scan_findings',
+        'sense.orphan_cleanup_actions'
+    ] LOOP
+        IF NOT has_table_privilege('yovision_t012_sense', target, 'SELECT,INSERT,UPDATE,DELETE') THEN
+            RAISE EXCEPTION 'Sense runtime lacks reconciliation safety privilege on %', target;
+        END IF;
+        IF has_table_privilege('public', target, 'SELECT,INSERT,UPDATE,DELETE') THEN
+            RAISE EXCEPTION 'Reconciliation safety state leaked to PUBLIC on %', target;
+        END IF;
+    END LOOP;
+    IF NOT EXISTS (
+        SELECT 1 FROM information_schema.columns
+        WHERE table_schema = 'sense' AND table_name = 'reconcile_state'
+          AND column_name = 'lease_token'
+    ) THEN
+        RAISE EXCEPTION 'reconcile fencing columns are missing';
+    END IF;
+END
+$reconcile_safety$;
+
+DO $audit_relay$
+BEGIN
+    IF NOT has_table_privilege('yovision_t012_sense', 'sense.device_operation_outbox', 'SELECT,INSERT,UPDATE,DELETE')
+       OR has_table_privilege('yovision_t012_sense', 'bell.audit_events', 'SELECT,INSERT,UPDATE,DELETE')
+       OR has_table_privilege('yovision_t012_sense', 'bell.audit_relay_receipts', 'SELECT,INSERT,UPDATE,DELETE') THEN
+        RAISE EXCEPTION 'Sense runtime violates audit relay schema ownership';
+    END IF;
+    IF NOT has_table_privilege('yovision_t015_bell', 'bell.audit_events', 'SELECT,INSERT')
+       OR has_table_privilege('yovision_t015_bell', 'bell.audit_events', 'UPDATE,DELETE,TRUNCATE')
+       OR NOT has_table_privilege('yovision_t015_bell', 'bell.audit_relay_receipts', 'SELECT,INSERT,DELETE')
+       OR has_table_privilege('yovision_t015_bell', 'bell.audit_relay_receipts', 'UPDATE,TRUNCATE') THEN
+        RAISE EXCEPTION 'Bell runtime violates audit relay privileges';
+    END IF;
+    IF has_table_privilege('public', 'bell.audit_events', 'SELECT,INSERT,UPDATE,DELETE,TRUNCATE')
+       OR has_table_privilege('public', 'bell.audit_relay_receipts', 'SELECT,INSERT,UPDATE,DELETE,TRUNCATE') THEN
+        RAISE EXCEPTION 'Bell audit relay tables leaked to PUBLIC';
+    END IF;
+    IF NOT EXISTS (
+        SELECT 1 FROM information_schema.columns
+        WHERE table_schema='sense' AND table_name='device_operation_outbox'
+          AND column_name='relay_lease_token'
+    ) THEN
+        RAISE EXCEPTION 'Sense audit relay fencing columns are missing';
+    END IF;
+END
+$audit_relay$;
+
+DO $event_ingress$
+BEGIN
+    IF NOT has_table_privilege('yovision_t015_bell', 'bell.event_ingress_bindings', 'SELECT')
+       OR has_table_privilege('yovision_t015_bell', 'bell.event_ingress_bindings', 'INSERT,UPDATE,DELETE,TRUNCATE')
+       OR NOT has_table_privilege('yovision_t015_bell', 'bell.event_ingress_receipts', 'SELECT,INSERT')
+       OR has_table_privilege('yovision_t015_bell', 'bell.event_ingress_receipts', 'UPDATE,DELETE,TRUNCATE')
+       OR NOT has_table_privilege('yovision_t015_bell', 'bell.event_ingress_nonces', 'SELECT,INSERT,DELETE')
+       OR has_table_privilege('yovision_t015_bell', 'bell.event_ingress_nonces', 'UPDATE,TRUNCATE') THEN
+        RAISE EXCEPTION 'Bell runtime violates event ingress privileges';
+    END IF;
+    IF NOT has_column_privilege('yovision_t015_bell', 'sense.devices', 'id', 'SELECT')
+       OR NOT has_column_privilege('yovision_t015_bell', 'sense.devices', 'area_id', 'SELECT')
+       OR has_column_privilege('yovision_t015_bell', 'sense.devices', 'endpoint_ref', 'SELECT')
+       OR has_column_privilege('yovision_t015_bell', 'sense.devices', 'credential_ref', 'SELECT')
+       OR has_column_privilege('yovision_t015_bell', 'sense.devices', 'profile_token', 'SELECT')
+       OR has_column_privilege('yovision_t015_bell', 'sense.devices', 'path_name', 'SELECT') THEN
+        RAISE EXCEPTION 'Bell runtime Sense device projection privilege drift';
+    END IF;
+    IF has_table_privilege('public', 'bell.event_ingress_bindings', 'SELECT,INSERT,UPDATE,DELETE,TRUNCATE')
+       OR has_table_privilege('public', 'bell.event_ingress_receipts', 'SELECT,INSERT,UPDATE,DELETE,TRUNCATE')
+       OR has_table_privilege('public', 'bell.event_ingress_nonces', 'SELECT,INSERT,UPDATE,DELETE,TRUNCATE') THEN
+        RAISE EXCEPTION 'Bell event ingress tables leaked to PUBLIC';
+    END IF;
+END
+$event_ingress$;

docs/00-ai-start-here.md

@@ -40,13 +40,13 @@ MVP 以默认 16 路跑通一个场景的端到端闭环；架构、数据和 UI
 
 ## 当前阶段
 
-当前为 **M0 指定型号实机准入已完成，M1 Sense 五路混合源集成待执行**。后续本地开发统一使用已准入的一台海康样机，多路软件闭环使用独立合成 RTSP 源补足；真实多设备证据延后到客户/借用/租赁条件具备时执行。
+当前为 **M0 指定型号实机准入、M1 Sense 五路混合源集成和 M2 本地 16 路软件基线均已完成，M3 已建立 Bell 不可变事件存储、Sense→Bell 全局审计 relay、Brain 单路可视化工程原型、Sense 回环 NVR 管理面纵切和 Brain→Bell 可靠事件 ingress**。后续本地开发统一使用已准入的一台海康样机，多路软件闭环使用独立合成 RTSP 源补足；真实多设备证据延后到客户/借用/租赁条件具备时执行。客户网络尚未提供，T-013 WireGuard 继续后置；下一项建议把 Bell 规则→Alert→ack 最小纵切与证据切片拆成独立任务。
 
 优先路径：
 
 1. M0：已用一台真实样机完成首期指定“型号 + 硬件版本 + 固件”ONVIF/RTSP 准入；结论不外推为多品牌兼容，真实断网恢复证据按负责人豁免留痕。
 2. M1：只在 `Sense/` 建立 MediaMTX 生产接入骨架，以 1 路准入实机 + 至少 4 路独立合成源完成五路自动建 path、探活和断线重建。
-3. M2：对账、多租户、隧道和至少一个站点的 16 路全流程。
+3. M2：Control API、多租户投影、调和 fencing、孤儿安全闸和本地 16 路批量收敛/30 分钟稳定基线已完成；WireGuard 等客户网络条件具备后补验。
 4. M3：Brain + Bell 起步，默认 16 路端到端事件、预警、ack 与误报反馈。
 5. M4–M5：64/128 路分片、管理端和第二/第三场景包。
 
@@ -89,6 +89,13 @@ go -C Sense generate ./internal/mtx ./internal/controlapi
 go -C Sense test ./...
 go -C Sense vet ./...
 go -C Sense build ./...
+go -C Bell test ./...
+go -C Bell vet ./...
+go -C Bell build ./...
+python -m unittest discover -s Brain/tests -p "test_*.py" -v
+python -m compileall -q Brain
 ```
 
-日常优先运行根目录 `./init.ps1` 或 `./init.sh`，它会执行上述治理、生成、测试、静态检查和构建门禁。Sense 本地启动为 `go -C Sense run ./cmd/sense-api`；默认只监听回环地址，具体配置、MediaMTX 版本与校验方法见 [`03-tech-stack.md`](03-tech-stack.md) 和 [`../Sense/README.md`](../Sense/README.md)。
+日常优先运行根目录 `./init.ps1` 或 `./init.sh`，它会执行上述治理、Brain 单元/编译、生成、测试、静态检查和构建门禁。Sense 本地启动为 `go -C Sense run ./cmd/sense-api`；T-018 控制台必须在完成 PostgreSQL/Control API 外部安全配置后显式设置 `SENSE_CONSOLE_ENABLED=true`，再访问回环 `/sense-console/`。Brain 合成工程原型启动为 `python -m Brain.yovision_brain --source synthetic`。工程页面默认只允许回环，具体配置、版本与校验方法见 [`03-tech-stack.md`](03-tech-stack.md)、[`../Sense/README.md`](../Sense/README.md) 和 [`../Brain/README.md`](../Brain/README.md)。
+
+本机 16 路软件容量基线使用 `./Sense/scripts/t014-capacity.ps1 -PgRoot D:\pgsql17`；正式证据必须使用默认 30 分钟窗口，且只证明固定低码率合成负载。结果与限制见 [`research/sense-16-stream-capacity.md`](research/sense-16-stream-capacity.md)。

docs/03-tech-stack.md

@@ -50,7 +50,48 @@ MediaMTX 官方 `v1.19.3` OpenAPI 固定保存于 `Sense/api/vendor/mediamtx-v1.
 
 M2 仍保留 SQLite 作为单机开发与 T-006 回归入口，但生产真相源切换目标是 PostgreSQL。运行时必须显式设置 `SENSE_DB_DRIVER=postgres` 和私有 `SENSE_DB_DSN` 才使用 PostgreSQL；仓库不提供带密码 DSN。初始 schema 由 `deploy/postgres/` 的顺序 migration 创建，不在 Sense 进程启动时使用高权限自动迁移。
 
-T-011 复用同一套冻结的 Go、PostgreSQL、pgx 与 `oapi-codegen`，未增加第三方依赖。Sense Control API v1 从仓库 OpenAPI 生成 `net/http` server glue；首版认证是可替换 port 下的外部静态 SHA-256 注册表，公共路由默认关闭且只在 PostgreSQL v4 schema 上启用。静态适配器是私有部署启动方案，不替代后续 Bell/JWT/OIDC 身份服务。
+T-011 复用同一套冻结的 Go、PostgreSQL、pgx 与 `oapi-codegen`，未增加第三方依赖。Sense Control API v1 从仓库 OpenAPI 生成 `net/http` server glue；首版认证是可替换 port 下的外部静态 SHA-256 注册表，公共路由默认关闭且只在 PostgreSQL 生产路径启用。T-011 首次落成 v4 schema，T-012 后进程统一要求 v5。静态适配器是私有部署启动方案，不替代后续 Bell/JWT/OIDC 身份服务。
+
+T-012 同样未增加第三方依赖：PostgreSQL v5 使用数据库时钟租约和 fencing token 协调多实例调和/孤儿扫描；MediaMTX Path 枚举继续使用同版生成客户端。`/metrics` 由 Go 标准库输出 Prometheus 文本格式，只包含固定结果枚举、构建/实例信息和汇总 gauge/counter，不使用 tenant、Site、device 或 Path 标签。孤儿处置是 PostgreSQL 专用本地命令，默认周期任务只报告、不自动删除。
+
+T-014 没有增加生产依赖。Windows 容量脚本冻结并核对 Sense 模块 Go 1.26.5、PostgreSQL 17.10、MediaMTX v1.19.3 与 FFmpeg 8.1.2；MediaMTX Windows amd64 ZIP 使用上表官方 SHA-256，解压后 `mediamtx.exe` 另固定为 `1cda85249312cb9463f9f94c5a712b9f160c9af3fd9490f0d4723911d7880e05`。FFmpeg 只生成无人物夹具并以 16 个独立 `-c copy` 进程发布，不进入生产镜像或 Go module。正式本机结果与限制见 [`research/sense-16-stream-capacity.md`](research/sense-16-stream-capacity.md)。
+
+### 1.3 Bell M3 事件存储冻结版本（T-015）
+
+| 组件 | 冻结版本 | 许可证 / 校验 | 使用与退出路线 |
+| --- | --- | --- | --- |
+| Go | `1.26.5`（与 Sense 相同） | BSD-3-Clause；复用 §1.1 工具链与校验 | Bell 独立 Go module；升级时同时运行两个 module 的 test/vet/build |
+| PostgreSQL / pgx | `17.10` / `github.com/jackc/pgx/v5 v5.10.0` | PostgreSQL License / MIT；module sum `h1:VhSvgU2jSli8o3AqIEOTJr7rZwAEUVo4E4XhR94Zfr0=` | 复用 T-009 的 `database/sql` 边界；运行身份改用无 owner 权限的 `bell_runtime` 组 |
+| JSON Schema | `github.com/santhosh-tekuri/jsonschema/v6 v6.0.2` | Apache-2.0；module sum `h1:KRzFb2m7YtdldCEkzs6KqmJw4nqEVZGK7IN2kJkjTuQ=` | 运行时校验 Draft 2020-12 与 format；退出时可替换 validator，但冻结 schema 和负向契约测试不变 |
+| ULID | `github.com/oklog/ulid/v2 v2.1.2` | Apache-2.0；module sum `h1:IEclFb9JNvzYA6MW2SCxbLzcHTVsfqm3PrqGQJH5zec=` | 只封装在 Bell ID generator port 后；平台前缀仍为 `evt_`，替换实现不得改变格式或所有权 |
+
+T-015 不冻结 Brain→Bell transport，也不产生可部署 Bell API 二进制。内部 factory 接收不含 `id` 的候选事实，由 Bell 生成 ULID 后才形成最终 v0.1 事件；不得把该 Go 类型当成公共网络协议。
+
+### 1.4 Sense 审计 relay（T-016）
+
+T-016 不增加第三方依赖：两端使用 Go 标准库 HTTP、HMAC-SHA256、SHA-256、base64url 和 constant-time compare，数据库继续使用已冻结的 PostgreSQL 17.10/pgx。`cmd/bell-api` 只提供回环 health/ready 和 Sense 审计内部端点；非回环监听必须同时提供绝对路径 TLS 证书/私钥。HMAC key 使用仓库外 version 1 JSON 文件，secret 至少 32 字节；该适配器不替代未来 Bell 公共 JWT/OIDC。
+
+### 1.5 Brain 单路工程原型（T-017）
+
+| 组件 | 冻结版本 | 许可证 / 校验 | 使用与退出路线 |
+| --- | --- | --- | --- |
+| Python | `3.10.11` | PSF License；本机 `python --version` 已验证 | 仅冻结 T-017 工程原型和测试语法基线，不等于生产 Savant/DeepStream Python 版本；生产脚手架冻结时通过标准模块边界迁移 |
+| NumPy | `1.26.4` | BSD-3-Clause；本机 `numpy.__version__` 已验证 | 只在 frame fixture/OpenCV 数组边界使用；不把 NumPy 类型写入事件候选或 HTTP JSON |
+| OpenCV Python | `opencv-python 4.9.0.80` | wheel 构建脚本 MIT、OpenCV Apache-2.0；Windows amd64 wheel SHA-256 `3f16f08e02b2a2da44259c7cc712e779eff1dd8b55fdb0323e8cab09548086c0` | 内置 HOG/SVM 只作为可替换 `Detector` 的匿名人员检测演示，不是生产模型；生产退出时替换 detector port，区域判定、候选事实和 UI 状态不依赖 HOG 类型。不得在同一环境混装标准/headless/contrib wheel |
+
+T-017 不冻结 CUDA、Savant/DeepStream、ONNX Runtime、Ultralytics、跟踪/ReID 或 `max_sources`。默认合成 fixture 可重复展示工程链路，并必须标识为“非模型输出”；真实流只从仓库外绝对 URL 文件读取，优先消费 Sense 管理的 MediaMTX path。`/brain-demo` 只监听显式回环地址，事件候选最多保留 100 项内存环，不形成 Brain 业务数据库。OpenCV wheel 是 CPU-only；本机存在 NVIDIA GPU 也不能据此宣称 GPU 推理已接入。
+
+### 1.6 Sense 回环 NVR 管理面纵切（T-018）
+
+T-018 不增加生产或前端依赖：Go 使用标准库 `embed`/`net/http` 提供自包含 HTML、CSS 和原生 JavaScript，页面直接消费已冻结的 Sense Control API v1；实时预览使用同版 MediaMTX v1.19.3 自带浏览器 WebRTC 页面，不 vendor `reader.js`、不引入 CDN/播放器库，也不让 Sense 代理媒体字节。
+
+该选择只适用于默认关闭的回环工程控制台，不冻结 Bell 最终前端框架。页面默认 16 项 cursor 分页、最多 4 路按需预览且不自动加载视频；Sense HTTP 与 WebRTC 基地址必须同时是显式回环地址。非回环 HTTPS/JWT/OIDC、MediaMTX 外部认证、录像/回放和正式客户会话均保持待冻结，不能从 T-018 的本地演示外推为生产安全或 NVR 存储能力。
+
+### 1.7 Brain → Bell 事件 ingress（T-019）
+
+T-019 不增加第三方依赖。Brain 继续使用 Python 3.10.11 标准库 `sqlite3`、`urllib`、HMAC/SHA-256 和线程；SQLite Outbox 开启 WAL 与 `synchronous=FULL`，文件、配置和 key 都必须是仓库外绝对路径。内部 HTTP client 显式禁用环境代理，避免业务事件被 `HTTP(S)_PROXY` 意外转发；回环可用 HTTP，非回环只接受 HTTPS。队列最多 10,000 条待投递、单 payload 1 MiB、1～300 秒退避、最多 100 次，终态记录保留供运维核查。
+
+Bell 复用已冻结 Go 1.26.5、PostgreSQL 17.10/pgx、JSON Schema 和 ULID，不新增消息总线或 SDK。`brain-event-ingress-v1` 是单事件、producer-bound HMAC 内部适配器；Bell 用永久来源收据和事务级 advisory lock 保证同 `(producer_id, source_event_id)` 只生成一个平台事件。该选择不冻结 Bell 公共认证、生产 Brain GPU/runtime 或未来高吞吐 transport；若容量基准证明单条 HTTP 不足，必须发布兼容迁移方案，不能绕过来源幂等键。
 
 ## 2. 外部项目边界
 
@@ -63,7 +104,7 @@ T-011 复用同一套冻结的 Go、PostgreSQL、pgx 与 `oapi-codegen`，未增
 
 - Python、Savant/DeepStream 的精确版本；Go、MediaMTX 与 PostgreSQL 已分别为 Sense M1/M2 冻结，后续阶段可按升级流程调整。
 - Bell 前端框架和组件库。
-- 事件投递 transport 从 HTTP 起步还是直接采用消息总线。
+- Brain 生产推理 runtime 与更高吞吐 transport；T-019 已冻结首版 Brain→Bell 单事件内部 HTTP ingress，但不据此承诺 64/128 路吞吐或消息总线选型。
 - 目标 GPU/边缘硬件、解码能力和每 worker 的 `max_sources`。
 - MinIO/S3 的精确版本、加密实现，以及客户/法务确认后的最终生命周期策略。
 - 短信/语音供应商及生产双路径组合；是否开发原生 App 最早在 M4 根据试点反馈决定。
@@ -72,7 +113,7 @@ T-011 复用同一套冻结的 Go、PostgreSQL、pgx 与 `oapi-codegen`，未增
 
 ## 4. 当前标准入口
 
-Sense M1 骨架建立后，根目录脚本同步 Go 依赖并执行治理与 Sense 验证：
+Sense 骨架建立后，根目录脚本同步 Go 依赖并执行治理与 Sense 验证：
 
 ```powershell
 ./init.ps1
@@ -95,6 +136,23 @@ go -C Sense build ./...
 go -C Sense run ./cmd/sense-api
 ```
 
+Bell 事件域与内部审计 receiver 单独执行：
+
+```powershell
+go -C Bell mod download
+go -C Bell test ./...
+go -C Bell vet ./...
+go -C Bell build ./...
+```
+
+Brain 单路工程原型单独执行：
+
+```powershell
+python -m unittest discover -s Brain/tests -p "test_*.py" -v
+python -m compileall -q Brain
+python -m Brain.yovision_brain --source synthetic
+```
+
 直接验证：
 
 ```powershell
@@ -111,8 +169,8 @@ python scripts/validate_harness_governance.py
 | `docs/raw/contracts/` | JSON Schema 校验 + 契约代码断言（实现后补命令） | schema/示例/mapper 任一变化 | 生产者与消费者联合评审 |
 | Sense Go | `go -C Sense generate ./internal/mtx ./internal/controlapi`、`go -C Sense test ./...`、`go -C Sense vet ./...`、`go -C Sense build ./...` | ONVIF、存储、MediaMTX、对账或公共 API 变化 | T-006 使用 1 路指定实机 + 4 路独立合成源；T-007 才要求客户/借用/租赁的真实多路矩阵 |
 | PostgreSQL schema/repository | `python -m unittest discover -s tests -p "test_postgres_contract.py"`；Windows 本机再运行 `./scripts/test_postgres.ps1 -PgRoot D:\pgsql17` | migration、权限、配额判定或 PostgreSQL driver 变化 | 不需要摄像头；必须核对临时集群未使用现有 data 目录，现有 5432 listener 前后不变 |
-| Brain Python | 单元测试、类型/格式检查（命令待项目脚手架冻结） | mapper、判定状态机、模型接口变化 | 命中模型任务时用冻结数据集和目标硬件 |
-| Bell Go/Web | 后端测试 + 前端 lint/test/build（命令待脚手架冻结） | schema、RBAC、预警状态机或公共 UI 变化 | P0 流程由产品/值班角色验收 |
-| 容量/分片 | 任务内基准脚本 | 16/64/128 路里程碑 | 目标网络、媒体和 GPU 硬件必需 |
+| Brain Python | 当前工程原型：`python -m unittest discover -s Brain/tests -p "test_*.py" -v`、`python -m compileall -q Brain` | source、detector port、track、判定状态机、mapper 或模型接口变化 | T-017 合成 fixture 只验工程闭环；命中真实模型任务时另用冻结数据集和目标硬件，不能用 fixture/HOG 结果替代 |
+| Bell Go/Web | 当前后端：`go -C Bell test ./...`、`go -C Bell vet ./...`、`go -C Bell build ./...`；前端命令待脚手架冻结 | schema、RBAC、预警状态机或公共 UI 变化 | P0 UI 流程由产品/值班角色验收；纯事件存储不需要 UI 人工验收 |
+| 容量/分片 | 任务内基准脚本；本地 16 路入口为 `./Sense/scripts/t014-capacity.ps1 -PgRoot D:\pgsql17` | 默认 16 路软件基线，以及后续 64/128 路分片里程碑 | 本地 16 路控制面可用独立合成源；真实多路、生产 SLA、64/128 路、AI/GPU、网络与存储必须使用目标环境分别验收 |
 
 代码脚手架落地时必须把真实命令同步到本文、`init.ps1`/`init.sh`、`00-ai-start-here.md` 和 `current-state.md`。

docs/04-architecture.md

@@ -46,16 +46,16 @@ Sense ── 视频流/触发信号 ──> Brain
 主流程：
 
 1. Bell 持有站点、Area、配额与 `capture_policy`；首期在同一 PostgreSQL 实例内发布 `bell.site_quota_v1` 和 `bell.area_policy_v1` 两个版本化只读视图。T-009/T-010 已实现 Bell 源表/视图、最小权限和 Sense PostgreSQL repository；Sense 按 Area→Site 的固定 advisory-lock 顺序执行策略与配额准入并记录所用版本。未来分库必须发布新版本契约，不能静默改变 v1 语义。
-2. Sense 维护设备期望态，通过 MediaMTX API 和对账器收敛实际态。
-3. Brain 消费视频与触发信号，产生符合 v0.1 的事件。
-4. Bell 做 schema 与代码级断言，生成平台 ULID，保存不可变事件。
+2. Sense 维护设备期望态，通过 MediaMTX API 和对账器收敛实际态；PostgreSQL 多实例以数据库时钟短租约和 fencing token 领取 due row，过期 worker 不得提交结果。
+3. Brain 消费视频与触发信号，产生符合冻结契约的事件候选。T-017 已建立单路 frame source、可替换 detector、轻量 track、多边形进入判定和回环可视化工程原型；T-019 把候选先写入仓库外 SQLite Outbox，再经 producer-bound HMAC 内部 HTTP 投递。合成 fixture 与 OpenCV HOG 均不是生产模型，Brain 只生成 `source_event_id`，不自报平台 `id`。T-018 的 Sense 回环控制台不参与推理或事件生成。
+4. Bell 做身份/Area 隐私、schema 与代码级断言，生成平台 ULID，保存不可变事件。T-015 已实现内部 candidate→final event factory、append-only PostgreSQL repository 和独立 outcome 事实；T-019 增加数字事件身份到 Bell/Sense 逻辑身份的受控绑定、永久来源收据和短期 nonce 收据。该 ingress 是内部适配器，Bell 公共 API/JWT/OIDC 仍未冻结。
 5. 规则命中后创建独立 Alert，先落库再投递，等待 ack 并按策略升级。
 6. Bell 发起 pre-roll 证据回捞，Sense 提供切片接口。
 7. 用户标记 outcome，反馈进入 Brain 的数据闭环。
 
 首个 M3 数据流部署在 S2 民办寄宿学校的 16 路高风险点位，只运行越线、危险区域和聚集等匿名规则，不加载人脸底库。
 
-## 5. 十二条不可越界的决定
+## 5. 十三条不可越界的决定
 
 1. MediaMTX 独立运行，Sense 管配置与生命周期。
 2. 设备型触发源归 Sense；需要解码的像素级触发归 Brain。
@@ -68,7 +68,8 @@ Sense ── 视频流/触发信号 ──> Brain
 9. 投递状态机只依赖 Bell provider 接口，不直接依赖某家短信或语音 SDK；生产前至少两条独立路径并能故障切换。
 10. 设备领域模型使用 `modality + capabilities`，页面不以摄像头作为唯一根实体；未实现协议适配器明确为 `adapter_not_ready`，不得用模拟遥测伪装交付。
 11. Tenant/Site/Area/RBAC、配额、`capture_policy` 与全局审计属于 Bell；Sense Control API v1 只管理 Device 期望态与收敛查询，Sense 只读消费版本化投影并在设备写路径执行，投影不可用时只阻断相关新变更，不静默切断已有链路。
-12. Sense 的设备操作审计先写本地持久化 Outbox，再由幂等 relay 异步送入 Bell 全局审计；不得使用“先执行高风险操作、再尽力入队”的顺序。T-010 已冻结脱敏本地事件并实现原子写入；relay 的 transport、签名、确认、重放窗口与留存仍须独立冻结。
+12. Sense 的设备操作审计先写本地持久化 Outbox，再由幂等 relay 异步送入 Bell 全局审计；不得使用“先执行高风险操作、再尽力入队”的顺序。T-016 已实现 HMAC/nonce 内部 HTTP relay、数据库时钟 lease/fencing、逐项确认与 Bell 不可变全局事实；Sense 不获得 Bell schema 权限，Bell 不读取 Sense Outbox。
+13. Brain 的业务事件同样先写仓库外持久 Outbox，再异步投递；Bell 以 `(producer_id, source_event_id)` 永久收据而非短期 nonce 保证跨重启幂等。只有 `accepted/duplicate` 可确认本地 delivered；事件 ID 始终由 Bell 生成，稳定冲突不得自动改写来源 ID 或 payload。
 
 ## 6. 容量架构
 
@@ -79,15 +80,22 @@ Sense ── 视频流/触发信号 ──> Brain
 - 单分片故障不能扩散到其他分片。
 - 管理端默认查看 16 路，但按 128 路设计分页、虚拟列表、筛选和批量操作。
 
+T-018 先实现其中的回环工程纵切：设备 cursor 默认每页 16 项，同时预览最多 4 路且默认不播放；只有 `video_capture + enabled + online + converged` 的设备允许打开预览。该上限是浏览器工程台保护值，不是站点视频配额或 MediaMTX 分片容量。常态录像仍由客户现有 NVR 承担，Sense 不因提供监看页而变成媒体代理或录像真相源。
+
+T-014 已在单台 Windows 主机上用隔离 PostgreSQL、真实 Control API、单个生产 MediaMTX 和 16 个独立低码率合成 publisher 完成 `16 → 0 → 16` 批量收敛、四路发布故障隔离/恢复和 `1800.1 s / 180` 样本稳定观察，最大/最终 `unconverged=0`。这只证明默认 16 路的本地软件控制面与拉流基线，不改变上述分片架构：`media_shard.max_streams=32` 仍是待 64/128 路目标环境压测的初始建议，不能从 T-014 推导单机、真实摄像头、AI/GPU、存储或生产 SLA。完整证据见 [`research/sense-16-stream-capacity.md`](research/sense-16-stream-capacity.md)。
+
 ## 7. 一致性与失败处理
 
 - PostgreSQL `sense` schema 是生产期望态真相源；SQLite 只保留为 M1 本地开发/回归路径。MediaMTX、推理 worker 和对象存储是可对账的实际态。
-- 对账器水平触发、幂等、指数退避、限制并发；部分失败不做跨系统回滚，只持续收敛。
-- 孤儿删除必须有 10% 安全闸和人工可观察指标。
+- 对账器水平触发、幂等、指数退避、限制并发；PostgreSQL 使用 `FOR UPDATE SKIP LOCKED`、每项续租和 fencing token，SQLite 只保留单进程开发语义。部分失败不做跨系统回滚，只持续收敛。
+- MediaMTX Path 扫描把“Sense 历史拥有但当前失配”和“从未归属 Sense”分开；未知归属永不自动删除。历史拥有项也只允许在 15 分钟二次快照、1～128 项和 `候选 × 100 <= 当前 Path 总数 × 10` 全部通过时由本地运维命令逐项处置，不提供绕过。
 - `bell.site_quota_v1` 行缺失、数值越界、版本回退或读取失败只阻止视频设备新增/启用，不中断已有流；降低配额导致超限时不自动停用，后续准入返回稳定错误并产生运维信号。多 Sense 实例使用 PostgreSQL transaction-scoped advisory lock 串行化同 tenant/site 的计数与写入，不能用进程内锁替代。
 - `bell.area_policy_v1` 缺失、非法、版本回退或读取失败时，PostgreSQL repository 拒绝相关新增/启用；`non_imaging_only` 允许非成像设备但拒绝具有 `video_capture` 的设备。已有设备保持原状态，策略冲突由 Bell 管理端显式迁移或取消。同库实时视图不以源记录年龄误判 freshness。
-- 设备创建和期望态受理在本地事务内同时写脱敏 `sense.device_operation_outbox`；Outbox 失败回滚业务写入，相同期望态不增加 generation 但仍审计。异步 relay 尚未实现。
-- Brain 投递失败落本地队列重试，不阻塞实时推理主链路。
+- 设备创建和期望态受理在本地事务内同时写脱敏 `sense.device_operation_outbox`；Outbox 失败回滚业务写入，相同期望态不增加 generation 但仍审计。relay 最多领取 100 行，以 30 秒数据库 lease 和单调 fencing token 防止过期 worker 确认；成功和 dead letter 都保留本地事实。
+- Bell 先验证时间窗、nonce 和 constant-time HMAC，再逐项校验 v1/v2 事件；同 nonce/同摘要重放原结果，同 nonce/不同摘要拒绝。`bell.audit_events` 只追加且不自动清理，只有 10 分钟幂等收据允许 Bell runtime 删除过期行。
+- Bell 最终事件写入 `bell.events`；同平台 ID/同摘要仅视为幂等重放，同 ID/不同摘要拒绝。`bell_runtime` 只有 `SELECT/INSERT`，事件与 outcome 的 UPDATE/DELETE 另由数据库 trigger 拒绝；后续人工/自动 outcome 追加到独立表，不改写事件 payload。
+- T-019 的 Brain SQLite Outbox 与推理内存环分离：最多 10,000 条待投递，网络/5xx/认证故障按 1～300 秒重试，最多 100 次；稳定 4xx 进入 dead letter。Outbox 写入失败时不得在演示状态中伪装为已排队或已投递。
+- Bell 先按 HMAC key 绑定 producer，再解析候选；永久来源收据、最终 event 和成功 nonce 响应同事务提交。同来源/同 canonical hash 返回原 Bell ID，同来源/不同 hash 返回冲突。T-017 的 100 项内存环仍只服务页面显示，不承担可靠投递。
 - Alert 先落库再投递，进程重启恢复未完成升级链。
 - 值班排班发布前必须按 Site 时区校验班次空档、重叠、联系人停用和通道验证；排班以新版本和未来生效时间发布，不原地改写历史。交接班是进行中 Alert 的显式责任转移事件，不替代排班版本变更。
 - 事件证据技术默认保留 30 天并按生命周期删除；客户/法务在 M3 生产上线前确认法规适用性和最终期限，技术默认值不能覆盖其结论。
@@ -95,7 +103,7 @@ Sense ── 视频流/触发信号 ──> Brain
 ## 8. 数据与契约
 
 - Bell 核心实体：Tenant → Site → Area（含 `capture_policy`）以及 Role/Binding/Quota/Audit；Sense 核心实体：Device（含 `modality + capabilities`）→ StreamBinding/Zone，以及只记录已观察版本的 SiteQuota/AreaPolicyProjection。两个 schema 以稳定逻辑 ID 关联，不跨 schema 写入；配额 v1 为五列，Area v1 固定为 `tenant_id/site_id/area_id/capture_policy/source_version/source_updated_at` 六列。
-- Sense Control API v1 使用站点作用域路径、认证上下文 tenant、HMAC cursor 分页、PostgreSQL 幂等收据与资源 ETag；敏感连接引用只写不读。T-011 已实现 7 个 handler，并以 feature flag 限定到 PostgreSQL 路径；首版外部静态 SHA-256 注册表只实现认证 port 的私有部署适配器。正式签名和兼容规则以 [`contracts/`](contracts/) 为准，Bell 管理服务、JWT/OIDC 与 Outbox relay 仍未实现。
+- Sense Control API v1 使用站点作用域路径、认证上下文 tenant、HMAC cursor 分页、PostgreSQL 幂等收据与资源 ETag；敏感连接引用只写不读。T-011 已实现 7 个 handler，并以 feature flag 限定到 PostgreSQL 路径。T-016 审计 relay 与 T-019 Brain 事件 ingress 各用独立外部 HMAC key/端点，均不等同于 Bell 公共管理认证。正式签名和兼容规则以 [`contracts/`](contracts/) 为准。
 - 业务实体：Rule → Event → Alert → DeliveryAttempt/Ack；Event 与 Alert 不合并。
 - Bell 通知域分为三个聚合：Contact/Team 保存身份、成员关系和已验证通道；OnCallSchedule/ScheduleVersion/ShiftException 保存时区、轮换与例外；EscalationPolicy/Step 通过 `person / team / on_call_schedule` 类型化 `target_ref` 引用目标。三者共享逻辑 ID，不复制手机号、班次或轮换字段。
 - 每个 DeliveryAttempt 创建时解析当时生效的排班版本，并保存实际收件人、通道、`schedule_version` 和解析时间快照；之后联系人或排班修改不得回写既有投递事实。
@@ -107,21 +115,21 @@ Sense ── 视频流/触发信号 ──> Brain
 ## 9. 目录目标
 
 ```text
-Sense/cmd + Sense/internal/{device,onvif,mtx,reconcile,probe,trigger,tunnel,authcb,store}
+Sense/cmd + Sense/internal/{device,onvif,mtx,reconcile,orphan,metrics,probe,trigger,tunnel,auth,store}
 Brain/{pipeline,models,judge,emit,trigger,contracts}
 Bell/cmd + Bell/internal/{ingest,event,rule,alert,deliver,feedback,tenant,audit,store}
 Bell/{web,packs,contracts}
-deploy/postgres/{001_roles.sql,...,007_privileges_area_audit.sql,tests}
+deploy/postgres/{001_roles.sql,...,017_privileges_event_ingress.sql,tests}
 ```
 
-Sense 脚手架和 PostgreSQL `001`～`007` 已实现；Brain/Bell 应用目录仍是占位，真实服务必须由对应任务创建。
+Sense 脚手架和 PostgreSQL `001`～`017` 已实现；Bell 已有事件校验/不可变存储、Sense 审计 relay 与默认关闭的 Brain 事件 ingress，但没有公共管理 API。Brain 已有单路工程原型和仓库外 SQLite 可靠事件 Outbox；尚无生产模型、GPU pipeline、证据切片或规则/Alert 链。
 
 ## 10. 开发顺序
 
 - M0 不写生产代码。
 - M1 只动 Sense，以 1 路 T-001 准入实机 + 至少 4 路独立合成 RTSP 源完成五路接入骨架与 MediaMTX；设备模型从此时起保持模态/能力可扩展，但不提前实现非视频适配器。真实多设备现场门禁移到 T-007，阻塞生产试点但不阻塞本地开发。
-- M2 仍以 Sense 为主，完成 16 路开通/停用、对账、多租户投影与隧道。
-- M3 Brain 与 Bell 同时起步，事件契约首次被真实使用。
+- M2 仍以 Sense 为主；Control API、对账、多租户投影和本地 16 路开通/停用基线已完成，隧道等待客户网络条件后补验。
+- M3 Brain 与 Bell 同时起步；T-015～T-019 已打通不可变事件消费者、审计 relay、Brain 单路候选、Sense 回环管理纵切和 Brain→Bell 可靠事件 ingress。下一步仍应在证据切片与规则/Alert 之间按客户可见闭环拆分独立任务。
 - M4/M5 再做 64/128 路分片、完整管理端和多个场景包；M6 接入雷达、门磁、按钮和可穿戴等非视频适配器。
 
 M3 先执行不少于 2 周的 dry-run，冻结现场标注集，按规则报告召回率和每路每天误报数；现场基线评审后才把数值阈值写入站点验收附件。算法效果指标与系统 SLA 分开验收。

docs/06-tasks.md

@@ -26,9 +26,9 @@
 - T-009：使用 PostgreSQL 17.10 建立 `sense`/`bell` schema、Bell 配额源表/只读视图、最小权限和 Sense PostgreSQL repository；SQLite 保留为 M1 本地路径。
 - T-010：建立 Bell Area/`capture_policy` 只读投影、Sense 成像准入与设备操作审计 Outbox 原子写入；relay 传输协议留给后续任务。
 - T-011：按 T-008 契约实现认证 tenant 上下文、7 个设备/operation handler、PostgreSQL 幂等收据、ETag/HMAC cursor、最多 128 项批量操作和停用精确 path 收敛；公共控制 API 默认关闭且只在 PostgreSQL 路径启用。
-- 对账器幂等/退避/并发/10% 安全闸。
-- WireGuard 边缘隧道与断网恢复。
-- 16 路批量开通、停用和容量基准。
+- T-012：以 PostgreSQL 数据库时钟租约和 fencing token 防止多实例重复调和；增加可证明的 Path 历史归属、默认只读孤儿报告、15 分钟二次确认、10% 不可绕过安全闸和低基数 `/metrics`。
+- T-013（后置，尚未创建）：WireGuard 边缘隧道与断网恢复；等待客户网络拓扑、地址规划和部署权限，不阻塞本地软件开发。
+- T-014：使用隔离 PostgreSQL、真实 Control API 和 16 个独立本地合成 publisher，完成批量开通/停用、局部故障恢复和资源观测；正式基线为 `1800.1 s / 180` 样本、最大/最终 `unconverged=0`，仍只形成实验室软件证据，不替代 T-007/T-013 或生产 SLA。
 
 ## M3：首个 16 路端到端 MVP
 
@@ -36,6 +36,11 @@
 
 - Brain 模型接口、判定内核和 v0.1 mapper。
 - Bell 事件校验、不可变存储和 ULID。
+- T-015：建立 Bell Go 事件域基础，复制并校验冻结 v0.1 schema，由 Bell 生成平台 ULID，执行六项代码断言，并以 `bell_runtime` 最小权限保存不可变事件和 append-only outcome；不冻结 Brain transport 或公共 API。
+- T-016：冻结并实现 Sense Outbox → Bell 内部审计 relay；使用 HMAC、nonce 收据、数据库时钟 lease/fencing、逐项确认和 dead letter，在不共享 schema 权限的前提下写入 Bell 不可变全局审计事实。
+- T-017：建立 Brain 单路匿名区域事件工程原型；默认合成 fixture、可选 MediaMTX/RTSP，展示 detector port、track、多边形进入判定和不含平台 ID 的候选事实，不把 HOG/fixture 宣称为生产模型或效果证据。
+- T-018：优先建立 Sense NVR 管理面首个可运行纵切；复用 Control API 和 MediaMTX，以回环工程控制台展示设备、配额、收敛状态和最多 4 路按需 WebRTC 预览，不包含录像/回放或非回环生产认证。
+- T-019：建立 Brain→Bell 可靠业务事件 ingress；独立冻结数字事件身份到 Bell 逻辑身份的绑定、HMAC 认证、SQLite 持久 Outbox、Bell 永久来源收据和跨重启幂等确认，不得把 T-017 内存事件环当作生产投递。
 - 规则引擎、场景包加载、预警状态机与双路径投递。
 - 最小 Web/App 处置流程、RBAC 与审计。
 - 现场误报基线和反馈队列。

docs/07-user-stories.md

@@ -106,6 +106,14 @@
 - 验收：联系人维护身份、角色、值班组和已验证通道，不出现排班轮换字段；排班维护时区、班次、周轮换、生效日期、临时替班和版本；发布前发现空档/重叠并阻止发布，可预览当前及未来值班人；投递固化收件人、通道与排班版本快照；交接进行中 Alert 不静默修改未来排班。
 - 关联：RQ-C-24～RQ-C-27、RQ-C-33，IX-012、IX-023。
 
+## US-014 演示单路匿名区域事件链
+
+- 角色：售前/实施工程师、客户项目负责人。
+- 目标：在没有完整 Bell 业务闭环前，直接看到一条视频源如何形成匿名人员框、track、区域命中和事件候选，并能当场调整多边形区域。
+- 价值：尽早验证客户能理解的主链路，同时把“工程已连通”和“生产模型效果已验收”严格分开。
+- 验收：默认合成回放无外部条件即可重复运行且始终标识为 fixture；真实流只通过仓库外配置接入且页面不显示 URL/凭据；HOG 适配器明确不是生产模型，无检测时不伪造人员框；区域支持画布加点和键盘坐标等效路径；候选事实只有 `source_event_id`，不伪造 Bell 平台 ID、Alert 或处置状态。
+- 关联：RQ-C-11～RQ-C-15，IX-017、IX-024；T-017。
+
 ## 追溯规则
 
 新增 P0 UI 任务必须引用至少一个 US 和一个 IX；若没有 UI，任务文件明确写“不适用”。需求变化先更新用户故事和交互清单，再改页面。

docs/08-interaction-checklist.md

@@ -27,6 +27,7 @@
 | IX-021 | 值班交接 | 清单覆盖未 ack、处置中和升级中的 Alert，显示交班人、接班人、备注及下一次升级时间；接班确认写审计，交接期间不暂停或重置升级链，未确认时不转移责任 | US-011 | M3 |
 | IX-022 | 规则验收报表 | 按规则版本与冻结样本窗口展示召回率、每路每天误报数和计算样本量；支持保留口径的导出；不提供跨场景统一准确率 | US-012 | M4 |
 | IX-023 | 联系人与值班排班 | 在“升级链”内部以升级策略、值班与排班、联系人和通道三个二级模块统一设计；联系人与排班共享人员/值班组/已验证通道主数据但分对象维护；排班覆盖站点时区、周轮换、生效日期、临时替班、空档/重叠冲突、当前/未来值班人预览和版本发布审计；交接班只转移进行中 Alert，不暗改未来排班 | US-005、US-011、US-013 | M3/M4 |
+| IX-024 | Brain 单路工程演示 | 固定展示来源类型、fixture/真实检测边界、连接状态、detector 名称、帧序号、处理耗时、匿名 track、区域内外和最近候选；合成/离线数据不得伪装为模型输出。区域支持画布加点、撤销、清空、保存和坐标表单等效路径；保存失败保留草稿。页面不得展示流 URL、凭据、平台事件 ID、Alert 或虚构准确率 | US-014 | M3 |
 
 ## 全局状态
 

docs/api.md

@@ -1,6 +1,6 @@
 # API 与契约
 
-> Brain → Bell 事件契约 v0.1、Sense Control API v1、Bell 配额/Area 只读投影 v1 与 Sense 本地设备审计事件 v1/v2 已冻结；其他 API 仍在设计阶段。不得把本文的“待定”自行具体化为公共契约。
+> Brain → Bell 事件契约 v0.1 与内部 ingress v1、Sense Control API v1、Bell 配额/Area 只读投影 v1、Sense 本地设备审计事件 v1/v2 与 Sense→Bell 审计 relay v1 已冻结；其他 API 仍在设计阶段。不得把本文的“待定”自行具体化为公共契约。
 
 ## 1. 已冻结：Brain → Bell 事件契约
 
@@ -17,19 +17,22 @@
 - 证据文件名只含事件 ID 与日期目录，不含 IP、端口、凭据或客户名。
 - `sensors` 中恰有一个 primary，且其 `device_id` 与顶层一致。
 
+T-015 已实现 Bell 消费端的内部组装与存储边界；T-019 在 [`contracts/brain-event-ingress-v1.openapi.json`](contracts/brain-event-ingress-v1.openapi.json) 冻结并实现网络适配器。Brain 发送“不含平台 `id`”的完整候选，Bell 生成 `evt_` ULID 后执行 schema、六项代码断言与不可变落库。内部 endpoint 使用独立 producer-bound HMAC key，不是 Bell 公共 API 或 JWT/OIDC 的替代品。
+
 ## 2. 跨系统接口状态
 
 | 调用方 → 提供方 | 用途 | 当前约束 | 状态 |
 | --- | --- | --- | --- |
 | Sense → Bell | 读取站点视频配额 | 同一 PostgreSQL 实例内只读 `bell.site_quota_v1`；默认 16、最大 128；失败时拒绝新增/启用但不影响已有流 | T-008 冻结，T-009 已实现数据路径 |
 | Sense → Bell | 读取 Area 成像准入 | 只读 `bell.area_policy_v1`；`video_allowed | non_imaging_only`；缺失/非法/回退失败关闭但不影响已有设备 | T-010 已冻结并实现数据路径 |
-| Sense → Bell | 汇入设备操作审计 | 本地 Outbox 事件已冻结并原子落库；transport、签名、确认与留存未冻结 | T-010 本地基础已实现，relay 待设计 |
+| Sense → Bell | 汇入设备操作审计 | `POST /internal/v1/audit-events:batch`；1～100 项、1 MiB、10 秒 deadline、HMAC/nonce、逐项确认；非回环必须 HTTPS | T-016 已冻结并实现 |
+| Brain → Bell | 汇入业务事件候选 | `POST /internal/v1/event-candidates`；单条完整 v0.1-minus-id candidate、1 MiB、10 秒 deadline、producer-bound HMAC、永久来源收据；非回环必须 HTTPS | T-019 已冻结并实现 |
 | Bell → Sense | 请求事件证据/pre-roll 切片 | 幂等、按租户授权、异步结果、不得暴露原始凭据 | 待 M3 设计 |
 | Bell → Brain | outcome/误报反馈 | 原事件不可变；反馈可重试、去重、审计 | 待 M3 设计 |
 | Sense → Brain | 流绑定与设备型触发 | 分片可路由，触发入口与流控制解耦 | 待 M2/M3 设计 |
 | Worker → 控制面 | 注册、心跳、容量 | `max_sources` 来自 profile/压测，不固定为 16 | 待 M3 设计 |
 
-冻结签名和失败语义见 [`contracts/README.md`](contracts/README.md)、[`contracts/site-quota-v1.sql`](contracts/site-quota-v1.sql)、[`contracts/area-policy-v1.sql`](contracts/area-policy-v1.sql) 与 [`contracts/sense-device-audit-v1.schema.json`](contracts/sense-device-audit-v1.schema.json)。Bell 拥有投影源数据和视图，Sense 数据库角色只有 `SELECT`；未来分库必须发布新版本，不能在 v1 下把本地视图静默替换为网络调用。
+冻结签名和失败语义见 [`contracts/README.md`](contracts/README.md)、[`contracts/brain-event-ingress-v1.openapi.json`](contracts/brain-event-ingress-v1.openapi.json)、[`contracts/sense-audit-relay-v1.openapi.json`](contracts/sense-audit-relay-v1.openapi.json)、[`contracts/site-quota-v1.sql`](contracts/site-quota-v1.sql)、[`contracts/area-policy-v1.sql`](contracts/area-policy-v1.sql) 与 [`contracts/sense-device-audit-v1.schema.json`](contracts/sense-device-audit-v1.schema.json)。Bell 拥有投影源数据、视图、事件身份绑定与来源收据；未来分库必须发布新版本，不能在 v1 下静默改变一致性或身份语义。
 
 ## 3. 已冻结：Sense Control API v1
 
@@ -45,7 +48,7 @@
 - `endpoint_ref`、`credential_ref`、`profile_token` 只写不读；设备 ID 由服务端生成。普通响应和错误不得包含凭据、完整流 URI、token 或 MediaMTX 内部配置。
 - v1 不提供删除设备；停用设备保留历史。写入受理只表示期望态已持久化，不能表示实际态已收敛。
 
-T-008 冻结公共控制契约；T-009/T-010 建立 PostgreSQL 投影、准入和本地审计基础；T-011 已实现 7 个 HTTP handler、外部静态摘要认证适配器、tenant/Site scope、幂等收据、ETag/HMAC cursor 和持久化 batch operation。业务路由默认关闭且仅可在 PostgreSQL 上开启；Bell 管理服务、JWT/OIDC 和 Outbox relay 尚未实现。
+T-008 冻结公共控制契约；T-009/T-010 建立 PostgreSQL 投影、准入和本地审计基础；T-011 已实现 7 个 HTTP handler、外部静态摘要认证适配器、tenant/Site scope、幂等收据、ETag/HMAC cursor 和持久化 batch operation。业务路由默认关闭且仅可在 PostgreSQL 上开启；T-016 的审计 relay 是独立内部端点，不替代 Bell 管理服务或 JWT/OIDC。
 
 ## 4. 待冻结的 Bell 公共 API
 
@@ -69,10 +72,10 @@ Sense 使用 MediaMTX 官方 OpenAPI 生成客户端并加薄封装。业务代
 | Port | 操作 | 数据所有者 / 失败语义 |
 | --- | --- | --- |
 | ONVIF adapter | `Probe(target)`、`SetSystemDateAndTime(target, time)` | 设备是外部来源；`target` 只含 endpoint ref 与不透明 credential ref。错误稳定映射为认证失败、超时、不可用、响应无效，不记录凭据或完整流地址 |
-| MediaMTX paths | `CreatePath`、`GetPath`、`EnsurePath`、`DeletePath`、`PathReady` | SQLite 设备台账持有期望态，MediaMTX 只持有运行配置；`EnsurePath` 相同 source 不写、不同 source patch、缺失时 add；当前调和器绝不枚举或删除孤儿 |
+| MediaMTX paths | `CreatePath`、`GetPath`、`EnsurePath`、`DeletePath`、`PathReady`、`ListPathNames` | 设备台账持有期望态，MediaMTX 只持有运行配置；分页枚举只返回名称、不返回 source。普通调和只操作精确台账 Path；独立孤儿流程只报告未知归属，受控处置只接受有历史归属的 stale Path |
 | Device repository | 设备、期望态、实际态、调和进度 | SQLite 是 M1 默认开发路径；PostgreSQL 是 M2 生产路径并只读 Site/Area 两个 Bell 视图。调和退避持久化；配额/Area 失败时拒绝相关新增或启用，不关闭已有流；高风险写入与脱敏 Outbox 同事务 |
 
-MediaMTX 薄封装调用同版官方 OpenAPI 的 `/v3/config/paths/get|add|patch|delete/{name}` 与 `/v3/paths/get/{name}`。生成源、版本和 SHA-256 见 `docs/03-tech-stack.md`；业务包不得直接 import 生成包。
+MediaMTX 薄封装调用同版官方 OpenAPI 的 `/v3/config/paths/get|add|patch|delete/{name}`、`/v3/config/paths/list` 与 `/v3/paths/get/{name}`。列表有最大页数和重复页保护，source URI 在薄封装内丢弃。生成源、版本和 SHA-256 见 `docs/03-tech-stack.md`；业务包不得直接 import 生成包。
 
 ### 5.2 设备台账语义
 
@@ -83,7 +86,9 @@ MediaMTX 薄封装调用同版官方 OpenAPI 的 `/v3/config/paths/get|add|patch
 
 ### 5.3 Sense 进程 HTTP 面
 
-`GET /healthz` 表示进程存活，`GET /readyz` 表示所选数据库已打开且 schema/权限前置检查完成；两者不要求认证，也不等价于摄像头、MediaMTX path 或里程碑健康。T-011 在 `SENSE_CONTROL_API_ENABLED=true`、PostgreSQL v4 schema 和外部安全文件全部有效时注册冻结的 `/api/v1` 路由；默认 SQLite 运行仍只暴露探针。业务路由不提供无 Site 边界的 `/api/v1/devices` 临时接口。
+`GET /healthz` 表示进程存活，`GET /readyz` 表示所选数据库已打开且 schema/权限前置检查完成；两者不要求认证，也不等价于摄像头、MediaMTX path 或里程碑健康。`GET /metrics` 默认输出无租户/设备/Path 标签的 Prometheus 汇总，可通过 `SENSE_METRICS_ENABLED=false` 关闭。T-011 在 `SENSE_CONTROL_API_ENABLED=true`、PostgreSQL v5 schema 和外部安全文件全部有效时注册冻结的 `/api/v1` 路由；默认 SQLite 不注册业务路由。业务路由不提供无 Site 边界的 `/api/v1/devices` 临时接口。
+
+孤儿报告/处置不是公共 HTTP API。它由 PostgreSQL 专用 `cmd/sense-orphan` 在受控运维主机执行，使用 15 分钟 scan ID、actor、精确确认文本和运行前二次快照；不改变 Sense Control API v1 的 7 个 endpoint。
 
 ## 6. 变更流程
 

docs/contracts/README.md

@@ -1,6 +1,6 @@
-# Sense 控制面、准入投影与本地审计契约 v1
+# YoVision 控制面、审计与内部事件传输契约 v1
 
-> 冻结日期：2026-08-07。Control API 契约版本：`1.0.0`。Sense 是设备期望态的提供方；Bell 是 Tenant、Site、Area、RBAC、配额与全局审计的所有者。T-011 已实现 Control API handler 与 PostgreSQL 一致性边界；Bell 管理服务、JWT/OIDC 和 Outbox relay 仍未实现。
+> 冻结日期：2026-08-11。Control API、审计 relay 与 Brain 事件 ingress 契约版本：`1.0.0`。Sense 是设备期望态的提供方；Bell 是 Tenant、Site、Area、RBAC、配额、事件与全局审计的所有者。T-016 已实现 Sense Outbox 审计 relay，T-019 已实现 Brain 事件 Outbox ingress；Bell 公共管理服务与 JWT/OIDC 仍未实现。
 
 ## 契约文件
 
@@ -9,8 +9,10 @@
 | [`sense-control-v1.openapi.json`](sense-control-v1.openapi.json) | Sense | Bell 管理面、受控集成方 | 设备查询、创建、修改、启停与批量操作 |
 | [`site-quota-v1.sql`](site-quota-v1.sql) | Bell | Sense | 单 PostgreSQL 实例内的站点视频配额只读投影 |
 | [`area-policy-v1.sql`](area-policy-v1.sql) | Bell | Sense | Area 归属与 `capture_policy` 只读投影 |
-| [`sense-device-audit-v1.schema.json`](sense-device-audit-v1.schema.json) | Sense | 本地 Outbox；未来 Bell relay | 脱敏设备操作审计事实，不包含传输协议 |
-| [`sense-device-audit-v2.schema.json`](sense-device-audit-v2.schema.json) | Sense | 本地 Outbox；未来 Bell relay | v1 后继，增加脱敏配置修改受理事实；v1 文件保持不变 |
+| [`sense-device-audit-v1.schema.json`](sense-device-audit-v1.schema.json) | Sense | 本地 Outbox；Bell relay | 脱敏设备操作审计事实，不包含传输协议 |
+| [`sense-device-audit-v2.schema.json`](sense-device-audit-v2.schema.json) | Sense | 本地 Outbox；Bell relay | v1 后继，增加脱敏配置修改受理事实；v1 文件保持不变 |
+| [`sense-audit-relay-v1.openapi.json`](sense-audit-relay-v1.openapi.json) | Bell | Sense | 内部批量端点、HMAC、逐项确认、nonce 防重与重试边界 |
+| [`brain-event-ingress-v1.openapi.json`](brain-event-ingress-v1.openapi.json) | Bell | Brain | 单业务事件入站、producer/key 绑定、Bell ID 与跨重启幂等语义 |
 
 OpenAPI 的 `/api/v1` 路径是公共控制面边界；`/healthz`、`/readyz` 仍是非业务运维探针。v1 不提供设备删除：停用设备使用期望态接口，保留设备、操作和审计历史。Site、Area、配额、RBAC 和审计聚合不由 Sense 提供 CRUD。
 
@@ -57,7 +59,33 @@ T-010 冻结 `bell.area_policy_v1` 的列顺序为 `tenant_id/site_id/area_id/ca
 
 `sense-device-audit-v1.schema.json` 继续冻结创建与期望态两类事实且不原地扩展严格枚举。T-011 新增 v2 后继，兼容 v1 两类事件并增加 `device.configuration.accepted`；该 payload 只保存是否变化、字段名和 Area 逻辑 ID，不保存字段值。主体类型为 `user | service | system`，投影版本与 generation 随事实保存；endpoint、credential、profile token、path、密码、完整流 URI 或 MediaMTX 配置始终禁止进入审计。
 
-PostgreSQL repository 必须在设备创建/期望态事务内写 `sense.device_operation_outbox`；Outbox 失败回滚业务写入。相同期望态不增加 generation，但仍产生独立审计事实。Schema 不是 Bell relay 协议：传输端点、签名、批量确认、重放窗口和留存由后续任务冻结。
+PostgreSQL repository 必须在设备创建/期望态事务内写 `sense.device_operation_outbox`；Outbox 失败回滚业务写入。相同期望态不增加 generation，但仍产生独立审计事实。事件 schema 继续只定义事实；传输由 `sense-audit-relay-v1.openapi.json` 独立冻结。
+
+## Sense → Bell 审计 relay
+
+Sense 向 `/internal/v1/audit-events:batch` 每批发送 1～100 个事件，请求体不超过 1 MiB、deadline 10 秒。请求用外部文件中的至少 32 字节 secret 做 HMAC-SHA256，canonical string 为 method、path、Unix 秒、随机 nonce 与 body SHA-256 的换行拼接；非回环地址必须使用 HTTPS。Bell 允许 300 秒时钟偏差并将 `(key_id, nonce)` 收据保留 600 秒：相同请求摘要返回原结果，不同摘要返回 `409 replay_conflict`。
+
+Outbox 用 30 秒数据库时钟 lease、单调 fencing token 和 `FOR UPDATE SKIP LOCKED` 协调实例。`accepted/duplicate` 才标记 delivered；逐项 `rejected` 进入 dead letter；网络、5xx、认证失败或缺失结果以 1 秒起步、最多 300 秒指数退避。Sense 不直接访问 Bell schema，Bell 不读取 Sense Outbox；全局 `bell.audit_events` 不自动删除，只有短期 relay receipt 自动过期。
+
+两端读取同格式的仓库外 key 文件；Bell 可同时接受多个 key，Sense 用 `SENSE_AUDIT_RELAY_KEY_ID` 选择一个，便于先加新 key、切换发送端、再移除旧 key。占位结构如下，`secret_base64url` 必须替换为至少 32 个随机字节的无填充 base64url，不能提交真实值：
+
+```json
+{"version":1,"keys":[{"key_id":"sense-a","secret_base64url":"<external-secret>"}]}
+```
+
+## Brain → Bell 业务事件 ingress
+
+Brain 向 `POST /internal/v1/event-candidates` 单条投递完整 event v0.1 candidate；candidate 与冻结最终事件的顶层字段完全一致，只省略 Bell 所有的 `id`。envelope 额外携带 `schema_version=1` 和 `producer_id`。Bell 校验 HMAC、key 与 producer 的绑定、当前逻辑设备/Area 映射、event schema 和六项语义断言后生成 `evt_` ULID；首次接受返回 `201 accepted`，同一来源事实重投返回 `200 duplicate` 和原 Bell ID。
+
+认证 canonical string 与审计 relay 使用相同五行算法，但 key 文件独立且每项增加 `producer_id`，不得混用审计 key。正文最多 1 MiB、deadline 10 秒、允许 300 秒时钟偏差，nonce 收据至少保留 600 秒；HTTP 只允许回环地址，非回环必须 HTTPS。key 文件形态为：
+
+```json
+{"version":1,"keys":[{"key_id":"brain-a","producer_id":"brain-main","secret_base64url":"<external-secret>"}]}
+```
+
+Bell 的永久 `event_ingress_receipts` 以 `(producer_id, source_event_id)` 唯一并保存 canonical candidate SHA-256。相同 hash 重投返回原 event ID，不同 hash 返回 `409 source_event_conflict`；事件、来源收据和成功 nonce 响应在一个 PostgreSQL 事务中提交。`event_ingress_nonces` 只是 10 分钟防重表，可清理；来源收据和事件不自动删除、不可更新。Brain 必须先把 candidate 写入仓库外 SQLite Outbox，只有 `accepted/duplicate` 可标记 delivered；401、网络和 5xx 以 1～300 秒退避重试，稳定 4xx 进入 dead letter，最多 100 次、最多 10,000 条待投递。
+
+数字 `tenant_id/site_id/device_id` 通过 Bell 所有的 `event_ingress_bindings` 映射到当前 Bell Site/Area 和 Sense Device 逻辑 ID。运行时只读取 Sense 设备的 ID、Area 与 modality 列，不获得 endpoint、credential、profile token 或 path；绑定缺失/禁用、设备或 Area 不一致、删除、非视频或 `capture_policy != video_allowed` 均失败关闭。首版绑定只由受控 migration/admin SQL 配置，没有公共 CRUD。
 
 ## 兼容与废弃
 
@@ -73,8 +101,12 @@ PostgreSQL repository 必须在设备创建/期望态事务内写 `sense.device_
 ```powershell
 python -m json.tool docs/contracts/sense-control-v1.openapi.json | Out-Null
 python -m json.tool docs/contracts/sense-device-audit-v2.schema.json | Out-Null
+python -m json.tool docs/contracts/sense-audit-relay-v1.openapi.json | Out-Null
+python -m json.tool docs/contracts/brain-event-ingress-v1.openapi.json | Out-Null
 python -m unittest discover -s tests -p "test_sense_control_contract.py"
 python -m unittest discover -s tests -p "test_sense_control_implementation.py"
+python -m unittest discover -s tests -p "test_sense_audit_relay_contract.py"
+python -m unittest discover -s tests -p "test_brain_event_ingress_contract.py"
 ```
 
 测试同时校验 OpenAPI 结构、生成 server glue、HTTP handler 与 PostgreSQL migration/事务；它不替代 Bell 消费方联合验收或客户现场容量验证。

docs/contracts/brain-event-ingress-v1.openapi.json

@@ -0,0 +1,147 @@
+{
+  "openapi": "3.1.0",
+  "info": {
+    "title": "YoVision Brain Event Ingress",
+    "version": "1.0.0",
+    "description": "Internal single-event transport. The candidate is the frozen event v0.1 object with only the Bell-owned id omitted."
+  },
+  "paths": {
+    "/internal/v1/event-candidates": {
+      "post": {
+        "operationId": "ingestBrainEventCandidate",
+        "summary": "Validate and persist one Brain event candidate",
+        "parameters": [
+          {"$ref": "#/components/parameters/KeyId"},
+          {"$ref": "#/components/parameters/Timestamp"},
+          {"$ref": "#/components/parameters/Nonce"},
+          {"$ref": "#/components/parameters/Signature"}
+        ],
+        "requestBody": {
+          "required": true,
+          "content": {
+            "application/json": {
+              "schema": {"$ref": "#/components/schemas/IngressRequest"}
+            }
+          }
+        },
+        "responses": {
+          "200": {"description": "The same producer/source candidate was already stored", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/IngressResponse"}}}},
+          "201": {"description": "Candidate accepted and stored", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/IngressResponse"}}}},
+          "400": {"$ref": "#/components/responses/Error"},
+          "401": {"$ref": "#/components/responses/Error"},
+          "403": {"$ref": "#/components/responses/Error"},
+          "409": {"$ref": "#/components/responses/Error"},
+          "413": {"$ref": "#/components/responses/Error"},
+          "422": {"$ref": "#/components/responses/Error"},
+          "503": {"$ref": "#/components/responses/Error"}
+        }
+      }
+    }
+  },
+  "components": {
+    "parameters": {
+      "KeyId": {"name": "X-YoVision-Key-Id", "in": "header", "required": true, "schema": {"type": "string", "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$"}},
+      "Timestamp": {"name": "X-YoVision-Timestamp", "in": "header", "required": true, "schema": {"type": "string", "pattern": "^[0-9]{10,}$"}},
+      "Nonce": {"name": "X-YoVision-Nonce", "in": "header", "required": true, "schema": {"type": "string", "minLength": 22, "maxLength": 64}},
+      "Signature": {"name": "X-YoVision-Signature", "in": "header", "required": true, "schema": {"type": "string", "minLength": 43, "maxLength": 43}}
+    },
+    "schemas": {
+      "IngressRequest": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["schema_version", "producer_id", "candidate"],
+        "properties": {
+          "schema_version": {"const": 1},
+          "producer_id": {"type": "string", "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$"},
+          "candidate": {"$ref": "#/components/schemas/EventV01Candidate"}
+        }
+      },
+      "EventV01Candidate": {
+        "description": "Exact docs/raw/contracts/event-v0.1.schema.json event object with the required Bell-owned id field removed; nested shapes and semantic assertions remain authoritative in that frozen contract.",
+        "type": "object",
+        "additionalProperties": false,
+        "required": [
+          "schema_version", "source_event_id", "tenant_id", "site_id", "device_id", "sensors",
+          "kind", "severity", "confidence", "occurred_at", "detected_at", "latency_seconds",
+          "config_version", "rule", "subject", "observation", "evidence", "dedup_key",
+          "aggregated_into", "outcome", "outcome_source", "outcome_reason", "diagnostics", "ext"
+        ],
+        "properties": {
+          "schema_version": {"const": "0.1"},
+          "source_event_id": {"type": "string", "pattern": "^[A-Za-z0-9_-]{1,128}$"},
+          "tenant_id": {"type": "integer", "minimum": 1},
+          "site_id": {"type": "integer", "minimum": 1},
+          "device_id": {"type": "integer", "minimum": 1},
+          "sensors": {"type": "array", "minItems": 1, "items": {"type": "object"}},
+          "kind": {"type": "string", "pattern": "^[a-z][a-z0-9_]{2,63}$"},
+          "severity": {"type": "string", "enum": ["low", "medium", "high", "critical"]},
+          "confidence": {"type": ["number", "null"], "minimum": 0, "maximum": 1},
+          "occurred_at": {"type": "string", "format": "date-time"},
+          "detected_at": {"type": "string", "format": "date-time"},
+          "latency_seconds": {"type": "number", "minimum": 0},
+          "config_version": {"type": "string", "minLength": 1, "maxLength": 128},
+          "rule": {"type": ["object", "null"]},
+          "subject": {"type": "object"},
+          "observation": {"type": ["object", "null"]},
+          "evidence": {"type": "object"},
+          "dedup_key": {"type": ["string", "null"]},
+          "aggregated_into": {"type": ["string", "null"]},
+          "outcome": {"type": "string"},
+          "outcome_source": {"type": ["string", "null"]},
+          "outcome_reason": {"type": ["string", "null"]},
+          "diagnostics": {"type": ["object", "null"]},
+          "ext": {"type": "object"}
+        }
+      },
+      "IngressResponse": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["schema_version", "producer_id", "source_event_id", "event_id", "status"],
+        "properties": {
+          "schema_version": {"const": 1},
+          "producer_id": {"type": "string"},
+          "source_event_id": {"type": "string"},
+          "event_id": {"type": "string", "pattern": "^evt_[0-9A-HJKMNP-TV-Z]{26}$"},
+          "status": {"type": "string", "enum": ["accepted", "duplicate"]}
+        }
+      },
+      "Error": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["error"],
+        "properties": {
+          "error": {"type": "string"},
+          "detail_code": {"type": "string"}
+        }
+      }
+    },
+    "responses": {
+      "Error": {"description": "Stable machine-readable failure", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/Error"}}}}
+    }
+  },
+  "x-yovision-final-event-schema": "docs/raw/contracts/event-v0.1.schema.json",
+  "x-yovision-signature": {
+    "algorithm": "HMAC-SHA256",
+    "canonical_lines": ["method", "escaped_path", "unix_timestamp_seconds", "base64url_nonce", "lowercase_hex_sha256_body"],
+    "clock_skew_seconds": 300,
+    "nonce_receipt_ttl_seconds": 600,
+    "minimum_secret_bytes": 32,
+    "key_document_shape": {"version": 1, "keys": [{"key_id": "brain-a", "producer_id": "brain-main", "secret_base64url": "external-secret"}]}
+  },
+  "x-yovision-delivery": {
+    "maximum_body_bytes": 1048576,
+    "deadline_seconds": 10,
+    "initial_retry_seconds": 1,
+    "maximum_retry_seconds": 300,
+    "maximum_attempts": 100,
+    "maximum_queued": 10000,
+    "success_statuses": ["accepted", "duplicate"],
+    "retryable_http": [401, 500, 502, 503, 504]
+  },
+  "x-yovision-idempotency": {
+    "source_scope": ["producer_id", "source_event_id"],
+    "same_candidate": "return duplicate with the original Bell event_id",
+    "different_candidate": "409 source_event_conflict",
+    "bell_owns_event_id": true
+  }
+}

docs/contracts/sense-audit-relay-v1.openapi.json

@@ -0,0 +1,94 @@
+{
+  "openapi": "3.1.0",
+  "info": {
+    "title": "YoVision Sense Audit Relay",
+    "version": "1.0.0",
+    "description": "Internal, signed and idempotent delivery of redacted Sense device audit facts to Bell."
+  },
+  "paths": {
+    "/internal/v1/audit-events:batch": {
+      "post": {
+        "operationId": "receiveSenseAuditBatch",
+        "description": "Accepts 1-100 events in a body no larger than 1048576 bytes. The request deadline is 10 seconds. HMAC clock skew is at most 300 seconds and nonce receipts live for 600 seconds.",
+        "parameters": [
+          {"name": "X-YoVision-Key-Id", "in": "header", "required": true, "schema": {"type": "string", "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$"}},
+          {"name": "X-YoVision-Timestamp", "in": "header", "required": true, "description": "Unix seconds", "schema": {"type": "string", "pattern": "^[0-9]{10,}$"}},
+          {"name": "X-YoVision-Nonce", "in": "header", "required": true, "description": "16-48 random bytes encoded as unpadded base64url", "schema": {"type": "string", "minLength": 22, "maxLength": 64, "pattern": "^[A-Za-z0-9_-]+$"}},
+          {"name": "X-YoVision-Signature", "in": "header", "required": true, "description": "Unpadded base64url HMAC-SHA256 over POST, path, timestamp, nonce and lowercase SHA-256 body digest joined by newlines", "schema": {"type": "string", "minLength": 43, "maxLength": 43}}
+        ],
+        "requestBody": {
+          "required": true,
+          "content": {"application/json": {"schema": {"$ref": "#/components/schemas/BatchRequest"}}}
+        },
+        "responses": {
+          "200": {"description": "Stored, duplicate or permanently rejected per item. Same key ID, nonce and request digest returns the original response.", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/BatchResponse"}}}},
+          "400": {"description": "Malformed batch envelope"},
+          "401": {"description": "Invalid key, timestamp, nonce or signature"},
+          "409": {"description": "Same key ID and nonce used with a different request digest; error is replay_conflict"},
+          "413": {"description": "Body exceeds 1048576 bytes"},
+          "503": {"description": "Bell cannot atomically persist the batch and receipt"}
+        }
+      }
+    }
+  },
+  "components": {
+    "schemas": {
+      "BatchRequest": {
+        "type": "object", "additionalProperties": false, "required": ["events"],
+        "properties": {"events": {"type": "array", "minItems": 1, "maxItems": 100, "items": {"$ref": "#/components/schemas/Envelope"}}}
+      },
+      "Envelope": {
+        "type": "object", "additionalProperties": false, "required": ["schema_version", "event"],
+        "properties": {
+          "schema_version": {"type": "integer", "enum": [1, 2]},
+          "event": {"$ref": "#/components/schemas/AuditEvent"}
+        }
+      },
+      "AuditEvent": {
+        "type": "object", "additionalProperties": false,
+        "required": ["event_id", "event_type", "tenant_id", "site_id", "device_id", "actor", "reason", "trace_id", "aggregate_generation", "projection_versions", "data", "occurred_at"],
+        "properties": {
+          "event_id": {"type": "string", "pattern": "^audit_[0-9a-f]{32}$"},
+          "event_type": {"type": "string", "enum": ["device.created", "device.desired_state.accepted", "device.configuration.accepted"]},
+          "tenant_id": {"$ref": "#/components/schemas/LogicalId"},
+          "site_id": {"$ref": "#/components/schemas/LogicalId"},
+          "device_id": {"$ref": "#/components/schemas/LogicalId"},
+          "actor": {"type": "object", "additionalProperties": false, "required": ["type", "id"], "properties": {"type": {"type": "string", "enum": ["user", "service", "system"]}, "id": {"type": "string", "minLength": 1, "maxLength": 200}}},
+          "reason": {"type": ["string", "null"], "maxLength": 500},
+          "trace_id": {"type": ["string", "null"], "maxLength": 128},
+          "aggregate_generation": {"type": "integer", "minimum": 1},
+          "projection_versions": {"type": "object", "additionalProperties": false, "required": ["quota_source_version", "area_policy_source_version"], "properties": {"quota_source_version": {"type": ["integer", "null"], "minimum": 1}, "area_policy_source_version": {"type": ["integer", "null"], "minimum": 1}}},
+          "data": {"type": "object"},
+          "occurred_at": {"type": "string", "format": "date-time"}
+        }
+      },
+      "LogicalId": {"type": "string", "minLength": 1, "maxLength": 128, "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]*$"},
+      "BatchResponse": {
+        "type": "object", "additionalProperties": false, "required": ["results"],
+        "properties": {"results": {"type": "array", "minItems": 1, "maxItems": 100, "items": {"$ref": "#/components/schemas/Result"}}}
+      },
+      "Result": {
+        "type": "object", "additionalProperties": false, "required": ["event_id", "status"],
+        "properties": {
+          "event_id": {"type": "string"},
+          "status": {"type": "string", "enum": ["accepted", "duplicate", "rejected"]},
+          "error_code": {"type": "string", "pattern": "^[a-z][a-z0-9_]{0,63}$"}
+        }
+      }
+    }
+  },
+  "x-yovision-signature": {
+    "canonical": "METHOD\\nPATH\\nTIMESTAMP\\nNONCE\\nLOWERCASE_SHA256_BODY",
+    "algorithm": "HMAC-SHA256",
+    "encoding": "base64url-no-padding",
+    "clock_skew_seconds": 300,
+    "receipt_ttl_seconds": 600
+  },
+  "x-yovision-delivery": {
+    "lease_seconds": 30,
+    "initial_retry_seconds": 1,
+    "maximum_retry_seconds": 300,
+    "successful_statuses": ["accepted", "duplicate"],
+    "permanent_status": "rejected"
+  }
+}

docs/current-state.md

@@ -1,26 +1,33 @@
 # 当前实现状态
 
-> 快照日期：2026-08-07。只记录仓库现实与 blocker；任务实时状态到 Gitea Issue 查看。
+> 快照日期：2026-08-11。只记录仓库现实与 blocker；任务实时状态到 Gitea Issue 查看。
 
 ## 当前阶段
 
-- 阶段：M0 指定摄像头型号准入已完成；M1 的“一实机 + 四合成源”实验室软件闭环已通过；M2 已完成控制面契约、Site/Area 准入与本地审计事务基础，但五条独立真实上游和生产 SLA 尚未验收。
-- 生产代码：Sense 已包含可构建进程、SQLite/PostgreSQL repository、Site/Area 准入、设备操作 Outbox、标准 ONVIF SOAP/WS-Security adapter、凭据引用、MediaMTX 生成客户端、对账、探活和 MediaMTX 重启重建；公共设备管理 API、认证、Outbox relay 和完整生产部署仍未实现。
+- 阶段：M0 指定摄像头型号准入、M1“一实机 + 四合成源”软件闭环和 M2 本地 16 路批量收敛/稳定基线已通过；M3 已建立 Bell 不可变事件存储、Sense→Bell 全局审计 relay、Brain 单路匿名区域事件工程原型及 Brain→Bell 可靠事件 ingress。客户网络尚未提供，WireGuard T-013 后置，五条独立真实上游和生产 SLA 仍未验收。
+- 生产代码：Sense 已包含可构建进程、SQLite/PostgreSQL repository、Site/Area 准入、设备操作 Outbox、可选签名 relay、标准 ONVIF SOAP/WS-Security adapter、凭据引用、MediaMTX 生成客户端、Control API v1、对账/探活、数据库租约、孤儿只读扫描/受控命令、低基数指标和可重复 16 路容量脚本；Bell 已包含事件 v0.1 校验/不可变存储、append-only outcome、Sense 审计 relay 和默认关闭的 Brain 事件 ingress。Brain 已包含单路 source/detector/track/zone-entry、回环可视化页与仓库外 SQLite 事件 Outbox，但仍没有生产模型/GPU pipeline、公共管理服务/JWT、规则/Alert、证据切片或正式 Web/H5。
 - 默认容量：16 路；单站点本阶段上限 128 路，必须横向分片。
 
 ## 仓库现实
 
-- `Sense/` 已有 Go module 与 `cmd/sense-api`；`Brain/`、`Bell/` 仍只有目录占位，Bell 的首个数据库源表/视图 migration 位于根目录 `deploy/postgres/`。
+- `Sense/` 已有 Go module 与 `cmd/sense-api`；`Bell/` 已有事件域 Go module 和最小 `cmd/bell-api` 两条内部 ingress；`Brain/` 已有 Python 3.10 单路工程原型、30 项单元/HTTP/UI/Outbox 测试和 `docs/design/brain/index.html` 自包含页面。Bell/Sense migration 统一位于根目录 `deploy/postgres/`。
 - Sense 设备模型使用 `modality + capabilities`，SQLite 执行 v1 migration；视频配额默认 16、允许 1～128，17/128/129、新增/启用和“降低配额不关闭已有流”均有测试。
 - T-009 冻结 PostgreSQL `17.10` 和 `pgx/v5 v5.10.0`，实现 `bell`/`sense` schema、NOLOGIN 权限角色、Bell Site 版本 trigger、`bell.site_quota_v1` 和 Sense PostgreSQL repository；同站点并发准入用事务级 advisory lock，配额缺失/越界/版本回退时失败关闭且不改变已有流。
 - T-010 增量实现 `bell.areas`、`bell.area_policy_v1`、Area 版本观察和 `sense.device_operation_outbox`；`non_imaging_only` 拒绝成像设备创建/启用，失败不改变已有设备。设备创建/期望态受理与脱敏 Outbox 同事务，相同期望态不增加 generation 但仍审计。
-- Windows 隔离测试使用 `D:\pgsql17\bin` 启动随机回环端口临时集群，`001`～`007` migration 可重放、权限断言和 18 个真实 PostgreSQL 测试通过后自动清理；现有 `D:\pgsql17\data` 和 5432 服务未被读取、停止或修改。
-- MediaMTX 固定为独立二进制 `v1.19.3`，官方 OpenAPI 已按 SHA-256 vendoring，并由固定 `oapi-codegen v2.8.0` 生成客户端；手写薄封装有 create/read/delete、幂等 ensure 与探活假 HTTP 测试。
-- T-003 对账进度与指数退避持久化，覆盖取消和 SQLite 重启恢复；T-006 增加真实 ONVIF adapter、RTSP router、实验室播种/状态工具、故障代理和五路自动验收。当前仍不枚举/删除孤儿。
+- Windows 隔离测试使用 `D:\pgsql17\bin` 启动随机回环端口临时集群，`001`～`017` migration 可重放；Sense Outbox fencing、Bell event/global-audit/Brain-ingress repository、nonce/永久来源收据、权限、并发幂等冲突与不可变性测试通过后自动清理，现有 `D:\pgsql17\data` 和 5432 服务未被读取、停止或修改。
+- T-015 冻结 Bell Go 1.26.5、JSON Schema v6.0.2 和 ULID v2.1.2；Bell 拒绝上游自报平台 ID，在内部 candidate 组装后执行冻结 v0.1 schema 与六项语义断言。T-019 已为该 factory 增加内部网络入口和生产隐私 resolver；公共 API、JWT/OIDC 仍未冻结。
+- T-016 冻结 `sense-audit-relay-v1`：每批 1～100 项、1 MiB、10 秒 deadline、300 秒时钟窗、600 秒 nonce 收据、30 秒数据库 lease、1～300 秒退避。Sense 使用 `FOR UPDATE SKIP LOCKED` 和 fencing token；Bell constant-time 校验 HMAC，逐项返回 accepted/duplicate/rejected，并把全局事实追加到不可变 `bell.audit_events`。relay 默认关闭，非回环两端必须 HTTPS/TLS，key 只从仓库外文件读取。
+- T-017 冻结的只是工程原型：Python 3.10.11、NumPy 1.26.4、OpenCV 4.9.0.80；默认 2 FPS 合成 fixture，可选从仓库外文件读取 MediaMTX/RTSP。合成框不是模型输出，HOG/SVM 不是生产 detector，100 项内存事件环不是可靠投递；候选不含 Bell 平台 ID。
+- T-018 Sense 回环工程控制台已通过项目负责人产品验收：默认关闭并强制 Sense/MediaMTX 播放端显式回环，直接读取 Control API v1 的设备、配额、期望态/实际态/收敛事实；设备 cursor 每页 16 项，只有成像、启用、在线且已收敛的设备可选，最多 4 路按需嵌入 MediaMTX WebRTC 页面。token 只驻留页面内存，刷新即丢失；该验收不包含录像/回放、非回环生产认证、真实 16 机或生产 SLA。
+- T-019 冻结 `brain-event-ingress-v1`：单事件 1 MiB/10 秒、producer-bound HMAC、300 秒时钟窗、600 秒 nonce、SQLite WAL Outbox、1～300 秒退避、100 次/10,000 条边界。Bell 以受控绑定复查当前 Site/Area/Sense Device，永久 `(producer_id,source_event_id)` 收据与事件同事务提交；同 candidate 跨重启返回原 Bell ID，不同 candidate 稳定冲突。
+- MediaMTX 固定为独立二进制 `v1.19.3`，官方 OpenAPI 已按 SHA-256 vendoring，并由固定 `oapi-codegen v2.8.0` 生成客户端；手写薄封装有 create/read/delete、幂等 ensure、探活和只返回名称的受限分页枚举测试。
+- T-003 对账进度与指数退避持久化，覆盖取消和 SQLite 重启恢复；T-006 增加真实 ONVIF adapter、RTSP router、实验室播种/状态工具、故障代理和五路自动验收。T-012 的普通调和不枚举孤儿；独立 PostgreSQL 扫描默认只报告，未知归属永不删除。
 - T-006 正式使用 1 台准入实机和 4 个独立合成 publisher 连续观察 `1806.6 s` / 180 次采样，四类恢复均通过，最大与最终 `unconverged` 均为 0；详细证据见 `docs/research/sense-5-stream-integration.md`。
+- T-014 正式使用隔离 PostgreSQL、真实 Control API、两套 MediaMTX 和 16 个独立低码率合成 publisher，完成 17 路配额拒绝、三轮 `16 → 0 → 16` 批量收敛和固定四路故障恢复；稳定观察 `1800.1 s` / 180 次采样，最大与最终 `unconverged` 均为 0、最终在线 Path 16、帧错误 0。证据见 `docs/research/sense-16-stream-capacity.md`；不外推到真实 16 机、网络、录像、AI/GPU、64/128 路或生产 SLA。
 - `docs/raw/01`～`08` 已记录需求、分析、方案、客户场景、事件比对和三系统职责。
 - `docs/raw/contracts/event-v0.1.schema.json` 已冻结，并有多份示例与语义说明。
-- `docs/contracts/sense-control-v1.openapi.json` 的 7 个站点作用域/operation endpoint 已由 T-011 实现：外部静态 SHA-256 主体注册表、tenant/Site scope、HMAC cursor、ETag、PostgreSQL 24 小时幂等收据和最多 128 项 batch operation 均有代码与隔离集成测试。默认 SQLite 仍只暴露探针；Bell 管理服务、JWT/OIDC 和 Outbox relay 尚未实现。
+- `docs/contracts/sense-control-v1.openapi.json` 的 7 个站点作用域/operation endpoint 已由 T-011 实现；`sense-audit-relay-v1.openapi.json` 和 `brain-event-ingress-v1.openapi.json` 已分别由 T-016/T-019 实现。两条内部 ingress 使用独立 key；Bell 管理服务与 JWT/OIDC 尚未实现。
+- T-012 把 PostgreSQL schema 提升到 v5：due row 用数据库时钟、`FOR UPDATE SKIP LOCKED`、逐项续租和 fencing token 协调；MediaMTX Path 历史归属、15 分钟孤儿快照、最多 10%/128 项安全闸、无 bypass 的本地处置命令及 `/metrics` 已实现。SQLite 明确保留单实例开发语义。
 - harness coding 文档、上下文清单、Gitea Issue/PR 模板和治理脚本已接入。
 - Gitea 已初始化 12 个协作标签；`status/waiting` 用于依赖或外部条件未满足的未领取任务，实时可领取状态必须从 Gitea 查询，不在本文复制。
 - T-002 已关闭架构影响型问题：首期 S2 民办寄宿学校、客户侧私有部署、ONVIF/RTSP、NVIDIA 主路径、自研 Bell、Web/H5 与客户侧证据存储等边界已批准。
@@ -41,6 +48,23 @@ Windows：
 go -C Sense run ./cmd/sense-api
 ```
 
+Bell 事件域与两条内部 ingress 验证：
+
+```powershell
+go -C Bell test ./...
+go -C Bell vet ./...
+go -C Bell build ./...
+```
+
+Brain 单路工程原型验证与启动：
+
+```powershell
+python -m unittest discover -s Brain/tests -p "test_*.py" -v
+python -m compileall -q Brain
+python -m Brain.yovision_brain --source synthetic
+# 可选：追加 --event-ingress-config <仓库外绝对路径>
+```
+
 跨平台直接验证：
 
 ```powershell
@@ -55,7 +79,16 @@ python scripts/validate_harness_governance.py
 ./scripts/test_postgres.ps1 -PgRoot D:\pgsql17
 ```
 
-Sense 默认监听 `127.0.0.1:8080`，提供 `/healthz` 与 `/readyz` 运维探针；它们不代表摄像头或 M1 里程碑健康。MediaMTX 获取、校验和独立启动方法见 `Sense/README.md`。
+本机 16 路软件容量预检与正式验证：
+
+```powershell
+./Sense/scripts/t014-capacity.ps1 -PgRoot D:\pgsql17 -PreflightOnly
+./Sense/scripts/t014-capacity.ps1 -PgRoot D:\pgsql17 -OutputPath (Join-Path $env:TEMP 'yovision-t014-formal.json')
+```
+
+只有默认 30 分钟且输出 `formal_eligible=true` 的单次完整运行可作正式证据；`-ObservationMinutes 1` 只用于 smoke。
+
+Sense 默认监听 `127.0.0.1:8080`，提供 `/healthz`、`/readyz` 运维探针和低基数 `/metrics`；探针不代表摄像头或 M1 里程碑健康。MediaMTX 获取、校验和独立启动方法见 `Sense/README.md`。
 
 ## 当前 blocker / 待确认
 
@@ -65,17 +98,18 @@ Sense 默认监听 `127.0.0.1:8080`，提供 `/healthz` 与 `/readyz` 运维探
 - S2 真实生产试点的未成年人影像、公共安全视频法规适用性和最终留存政策仍需客户/法务确认，阻塞 M3 上线但不阻塞 M1 实验室骨架。
 - 人脸方向已延后至 M5 的 S4 成人园区候选试点；必要性/PIP 影响评估、单独同意与替代方式、合法底库来源和删除流程未完成，阻塞人脸能力上线。
 - 短信/语音具体供应商未选；生产前必须选定两条独立投递路径并验证故障切换。
-- Python/Savant 的精确版本、目标硬件和 Bell 前端栈尚未冻结；Sense M1 的 Go、SQLite driver、MediaMTX、生成器及生成运行时版本已在 T-003 冻结，PostgreSQL/pgx 版本已在 T-009 冻结。
-- 本机现有 PostgreSQL 5432 实例使用 SCRAM 且当前开发进程没有管理员密码；T-009～T-011 不绕过认证，自动验收使用隔离临时集群。向共享/生产实例安装 migration 前仍需管理员私下提供专用数据库、登录角色、外部 Control API 安全文件与备份方案。
+- 生产 Brain 的 Python/Savant/DeepStream 精确版本、目标硬件和 Bell 前端栈尚未冻结；T-017 的 Python/OpenCV 只适用于工程原型，不能外推为生产选择。Sense M1 的 Go、SQLite driver、MediaMTX、生成器及生成运行时版本已在 T-003 冻结，PostgreSQL/pgx 版本已在 T-009 冻结。
+- 本机现有 PostgreSQL 5432 实例使用 SCRAM 且当前开发进程没有管理员密码；T-009～T-019 不绕过认证，自动验收使用隔离临时集群。向共享/生产实例安装 migration 前仍需管理员私下提供专用数据库、最小权限登录角色、外部 Control API/两类 ingress key、Brain Outbox 路径、TLS 证书与备份方案。
 - 代码知识图谱在无业务代码阶段可能为空；工具不可用时使用 `rg` 处理文档与配置。
 
 ## 下一步
 
-下一项建议创建 T-012，补齐 M2 对账安全闸、孤儿检测（只报告/受控处置）与多实例可观测性，再进入 WireGuard 和 16 路批量开通基准；不要把 Control API 完成误报为 M2 容量出口。客户授权、借用或租赁条件具备后再执行 T-007 五条独立真实上游现场门禁。T-006 的合成结果不解除 T-007，也不形成容量或生产 SLA 承诺。
+客户网络仍未提供，T-013 WireGuard 继续后置。T-019 已完成本地 Brain→Bell 可靠业务事件 ingress；下一项建议独立建立 Bell 规则→Alert→ack 的最小可见纵切，证据/pre-roll 切片另立任务且不与 Alert 状态机混交。客户授权、借用或租赁条件具备后再执行 T-007 五条独立真实上游现场门禁；上述本地任务均不解除 T-007/T-013，也不形成真实多路、模型效果或生产 SLA 承诺。
 
 ## 已知风险
 
 - M0 临时 NVR 容易被误当生产基线，必须持续隔离。
 - 16 路默认值容易被写死，任务评审需专项搜索和测试边界值 17/128/129。
 - 未经真实硬件压测不能给出 GPU 路数承诺。
+- 合成 fixture 和 HOG 演示框容易被误读为生产 AI 效果；页面、日志和交付说明必须持续显示“非模型输出/非生产模型”，效果验收必须使用冻结模型、数据集和目标硬件。
 - Gitea 使用 HTTP；token 传输风险只在本机私有配置中接受，不把 token 或实例配置写入仓库。

docs/design/brain/index.html

@@ -0,0 +1,543 @@
+<!doctype html>
+<html lang="zh-CN" data-theme="dark">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <meta name="color-scheme" content="dark">
+  <meta name="brain-demo-token" content="__BRAIN_DEMO_TOKEN__">
+  <link rel="icon" href="data:,">
+  <title>YoVision Brain · 单路区域事件工程原型</title>
+  <style>
+    :root {
+      --bg: #0b1120;
+      --surface: #111a2b;
+      --surface-2: #172236;
+      --surface-3: #1e2c43;
+      --text: #f5f7fb;
+      --muted: #aebbd0;
+      --subtle: #8291a9;
+      --line: #2b3a52;
+      --primary: #8b7cf6;
+      --primary-strong: #7567e8;
+      --cyan: #38bdf8;
+      --success: #34d399;
+      --warning: #fbbf24;
+      --danger: #fb7185;
+      --focus: #b8e5ff;
+      --radius: 14px;
+      --shadow: 0 18px 48px rgba(0, 0, 0, .28);
+    }
+    * { box-sizing: border-box; }
+    html { min-width: 320px; background: var(--bg); }
+    body { margin: 0; min-height: 100dvh; background: var(--bg); color: var(--text); font: 14px/1.55 "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; }
+    button, input, textarea { font: inherit; }
+    button { cursor: pointer; }
+    button:focus-visible, input:focus-visible, textarea:focus-visible, a:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
+    .skip-link { position: fixed; z-index: 100; top: 8px; left: 8px; padding: 10px 14px; border-radius: 8px; background: white; color: #101827; transform: translateY(-150%); }
+    .skip-link:focus { transform: none; }
+    .prototype-banner { min-height: 30px; padding: 5px 16px; display: flex; align-items: center; justify-content: center; gap: 8px; background: #f4c84a; color: #241b00; font-size: 12px; font-weight: 800; text-align: center; letter-spacing: .04em; }
+    .app-shell { width: min(1540px, 100%); margin: 0 auto; padding: 0 18px 24px; }
+    .topbar { min-height: 72px; display: flex; align-items: center; gap: 18px; border-bottom: 1px solid var(--line); }
+    .brand { display: flex; align-items: center; gap: 11px; min-width: 230px; }
+    .brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; background: linear-gradient(145deg, var(--primary), var(--cyan)); color: white; font-weight: 900; box-shadow: 0 8px 24px rgba(56, 189, 248, .18); }
+    .brand strong, .brand span { display: block; }
+    .brand strong { font-size: 16px; }
+    .brand span { color: var(--muted); font-size: 12px; }
+    .top-context { margin-left: auto; display: flex; align-items: center; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
+    .chip { min-height: 32px; padding: 5px 10px; display: inline-flex; align-items: center; gap: 7px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); color: var(--muted); white-space: nowrap; }
+    .chip strong { color: var(--text); font-variant-numeric: tabular-nums; }
+    .status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--subtle); }
+    .status-dot.online { background: var(--success); box-shadow: 0 0 0 4px rgba(52, 211, 153, .12); }
+    .status-dot.warning { background: var(--warning); box-shadow: 0 0 0 4px rgba(251, 191, 36, .12); }
+    main { padding-top: 18px; }
+    .page-head { margin-bottom: 14px; display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
+    .page-head h1 { margin: 0 0 4px; font-size: clamp(22px, 2.4vw, 30px); line-height: 1.25; }
+    .page-head p { max-width: 800px; margin: 0; color: var(--muted); }
+    .mode-badge { min-height: 36px; padding: 7px 11px; border: 1px solid rgba(56, 189, 248, .35); border-radius: 9px; background: rgba(56, 189, 248, .09); color: #b8e5ff; font-weight: 750; white-space: nowrap; }
+    .grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(330px, .65fr); gap: 14px; }
+    .card { min-width: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); overflow: hidden; }
+    .card-head { min-height: 54px; padding: 10px 14px; display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line); }
+    .card-head h2 { margin: 0; font-size: 15px; }
+    .card-head p { margin: 2px 0 0; color: var(--muted); font-size: 12px; }
+    .toolbar { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
+    .btn { min-height: 44px; padding: 8px 13px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface-2); color: var(--text); font-weight: 750; transition: border-color .18s ease, background .18s ease, opacity .18s ease; }
+    .btn:hover { border-color: var(--primary); background: var(--surface-3); }
+    .btn:disabled { cursor: not-allowed; opacity: .45; }
+    .btn-primary { border-color: var(--primary-strong); background: var(--primary-strong); color: white; }
+    .btn-quiet { background: transparent; }
+    .icon { width: 18px; height: 18px; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
+    .video-stage { position: relative; aspect-ratio: 16/9; background: #050912; overflow: hidden; }
+    .video-stage img, .video-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
+    .video-stage img { object-fit: contain; background: #050912; }
+    .video-stage canvas { touch-action: manipulation; }
+    .video-label { position: absolute; z-index: 2; top: 12px; left: 12px; max-width: calc(100% - 24px); padding: 7px 10px; border-radius: 8px; background: rgba(3, 8, 18, .78); color: #dce6f5; font-size: 12px; backdrop-filter: blur(8px); pointer-events: none; }
+    .video-footer { min-height: 48px; padding: 8px 13px; display: flex; align-items: center; gap: 12px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
+    .video-footer strong { color: var(--text); font-variant-numeric: tabular-nums; }
+    .legend { margin-left: auto; display: flex; flex-wrap: wrap; gap: 12px; }
+    .legend span { display: inline-flex; align-items: center; gap: 6px; }
+    .legend i { width: 12px; height: 3px; display: inline-block; background: var(--cyan); }
+    .legend .zone-key { background: var(--warning); }
+    .metrics { padding: 12px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; border-top: 1px solid var(--line); }
+    .metric { min-height: 82px; padding: 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-2); }
+    .metric span { display: block; color: var(--muted); font-size: 12px; }
+    .metric strong { display: block; margin-top: 8px; font-size: 20px; font-variant-numeric: tabular-nums; }
+    .side-stack { display: grid; align-content: start; gap: 14px; }
+    .form-body { padding: 14px; display: grid; gap: 12px; }
+    label { display: grid; gap: 6px; color: var(--muted); font-size: 12px; font-weight: 750; }
+    input, textarea { width: 100%; min-height: 44px; padding: 9px 11px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface-2); color: var(--text); }
+    textarea { min-height: 124px; resize: vertical; font: 13px/1.55 ui-monospace, SFMono-Regular, Consolas, monospace; }
+    .helper { margin: 0; color: var(--subtle); font-size: 12px; }
+    .form-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
+    .inline-state { min-height: 42px; padding: 9px 10px; border-left: 3px solid var(--cyan); background: rgba(56, 189, 248, .07); color: var(--muted); font-size: 12px; }
+    .event-list { max-height: 330px; padding: 8px; display: grid; gap: 7px; overflow-y: auto; }
+    .ingress-summary { padding: 11px 12px; display: grid; gap: 8px; border-bottom: 1px solid var(--line); background: rgba(56, 189, 248, .04); }
+    .ingress-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
+    .ingress-head h3 { margin: 0; font-size: 13px; }
+    .ingress-state { min-height: 28px; padding: 3px 9px; display: inline-flex; align-items: center; gap: 7px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 12px; font-weight: 750; }
+    .status-dot.error { background: var(--danger); box-shadow: 0 0 0 4px rgba(251, 113, 133, .12); }
+    .ingress-copy { margin: 0; color: var(--muted); font-size: 12px; overflow-wrap: anywhere; }
+    .ingress-counts { margin: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
+    .ingress-counts[hidden] { display: none; }
+    .ingress-counts div { min-width: 0; padding: 7px 8px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface-2); }
+    .ingress-counts dt { color: var(--muted); font-size: 11px; }
+    .ingress-counts dd { margin: 2px 0 0; color: var(--text); font-size: 15px; font-weight: 800; font-variant-numeric: tabular-nums; }
+    .event { padding: 11px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-2); }
+    .event-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
+    .event strong { font-size: 13px; }
+    .event time, .event code { color: var(--muted); font-size: 12px; }
+    .event code { display: block; margin-top: 6px; overflow-wrap: anywhere; }
+    .event-delivery { margin-top: 5px; color: var(--muted); font-size: 12px; }
+    .event-tag { padding: 2px 7px; border: 1px solid rgba(251, 191, 36, .35); border-radius: 999px; background: rgba(251, 191, 36, .08); color: #ffe18a; font-size: 11px; }
+    .empty { min-height: 120px; padding: 26px 16px; display: grid; place-items: center; color: var(--muted); text-align: center; }
+    .architecture-note { margin-top: 14px; padding: 13px 15px; display: grid; grid-template-columns: auto 1fr; gap: 11px; border: 1px solid rgba(139, 124, 246, .30); border-radius: 12px; background: rgba(139, 124, 246, .07); color: var(--muted); }
+    .architecture-note strong { color: var(--text); }
+    .architecture-note p { margin: 2px 0 0; }
+    .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
+    @media (max-width: 980px) {
+      .grid { grid-template-columns: 1fr; }
+      .side-stack { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
+    }
+    @media (max-width: 700px) {
+      .app-shell { padding-inline: 12px; }
+      .topbar { align-items: flex-start; flex-direction: column; padding: 12px 0; }
+      .top-context { margin-left: 0; justify-content: flex-start; }
+      .page-head { flex-direction: column; }
+      .mode-badge { white-space: normal; }
+      .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
+      .side-stack { grid-template-columns: 1fr; }
+      .card-head { align-items: flex-start; flex-direction: column; }
+      .toolbar { width: 100%; }
+      .toolbar .btn { flex: 1; }
+      .video-footer { align-items: flex-start; flex-direction: column; }
+      .legend { margin-left: 0; }
+    }
+    @media (max-width: 420px) {
+      .prototype-banner { letter-spacing: 0; }
+      .chip { width: 100%; justify-content: flex-start; }
+      .toolbar { display: grid; grid-template-columns: 1fr; }
+      .toolbar .btn { width: 100%; min-width: 0; }
+      .metrics { grid-template-columns: 1fr 1fr; }
+      .metric strong { font-size: 17px; }
+      .form-actions { grid-template-columns: 1fr; }
+      .ingress-head { align-items: flex-start; flex-direction: column; }
+      .ingress-counts { grid-template-columns: 1fr 1fr; }
+    }
+    @media (prefers-reduced-motion: reduce) {
+      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
+    }
+  </style>
+</head>
+<body>
+  <a class="skip-link" href="#main">跳到主要内容</a>
+  <div class="prototype-banner">
+    工程原型 · 合成回放不等于模型效果 · 不用于生产告警或准确率承诺
+  </div>
+  <div class="app-shell">
+    <header class="topbar">
+      <div class="brand" aria-label="YoVision Brain">
+        <div class="brand-mark" aria-hidden="true">Y</div>
+        <div><strong>YoVision Brain</strong><span>单路匿名区域事件原型</span></div>
+      </div>
+      <div class="top-context" aria-label="运行上下文">
+        <span class="chip"><i id="connection-dot" class="status-dot warning" aria-hidden="true"></i><span id="connection-text">正在连接</span></span>
+        <span class="chip">来源 <strong id="source-label">合成回放</strong></span>
+        <span class="chip">区域版本 <strong id="zone-version">v1</strong></span>
+      </div>
+    </header>
+
+    <main id="main" tabindex="-1">
+      <div class="page-head">
+        <div>
+          <h1>单路检测与区域判定</h1>
+          <p>验证从画面、匿名人员框、track 到区域进入候选事实的工程闭环。Brain 先持久化到 Outbox，再由 Bell 分配平台事件 ID；Alert 仍由后续 Bell 链路负责。</p>
+        </div>
+        <div id="mode-badge" class="mode-badge">加载运行状态</div>
+      </div>
+
+      <div class="grid">
+        <section class="card" aria-labelledby="preview-title">
+          <div class="card-head">
+            <div><h2 id="preview-title">实时预览</h2><p id="preview-description">检测框与区域均使用归一化坐标叠加</p></div>
+            <div class="toolbar">
+              <button id="toggle-preview" class="btn btn-quiet" type="button" aria-pressed="false">
+                <svg class="icon" viewBox="0 0 24 24" aria-hidden="true"><path d="M8 5v14l11-7z"/></svg>
+                <span>暂停刷新</span>
+              </button>
+              <button id="edit-zone" class="btn" type="button" aria-pressed="false">
+                <svg class="icon" viewBox="0 0 24 24" aria-hidden="true"><path d="m14 4 6 6L8 22H2v-6zM12 6l6 6"/></svg>
+                <span>画布加点</span>
+              </button>
+            </div>
+          </div>
+          <div class="video-stage">
+            <img id="video-frame" alt="单路视频画面；检测框与区域由叠加层描述" width="960" height="540">
+            <canvas id="overlay" width="960" height="540" role="img" aria-label="匿名人员检测框与危险区域叠加；键盘用户可使用右侧坐标表单编辑区域"></canvas>
+            <div id="video-label" class="video-label">等待首帧</div>
+          </div>
+          <div class="video-footer">
+            <span>帧序号 <strong id="sequence">—</strong></span>
+            <span>采集时间 <strong id="captured-at">—</strong></span>
+            <div class="legend" aria-label="画面图例">
+              <span><i aria-hidden="true"></i>匿名人员框</span>
+              <span><i class="zone-key" aria-hidden="true"></i>活动区域</span>
+            </div>
+          </div>
+          <div class="metrics" aria-label="推理摘要">
+            <article class="metric"><span>目标处理帧率</span><strong id="fps">2.0 FPS</strong></article>
+            <article class="metric"><span>单帧耗时</span><strong id="latency">—</strong></article>
+            <article class="metric"><span>当前人员</span><strong id="person-count">0</strong></article>
+            <article class="metric"><span>区域内人员</span><strong id="inside-count">0</strong></article>
+          </div>
+        </section>
+
+        <aside class="side-stack" aria-label="区域配置与事件候选">
+          <section class="card" aria-labelledby="zone-title">
+            <div class="card-head">
+              <div><h2 id="zone-title">活动区域</h2><p>3–32 个归一化顶点；保存后重置 track 区域状态</p></div>
+            </div>
+            <form id="zone-form" class="form-body">
+              <label for="zone-name">区域名称
+                <input id="zone-name" name="zone-name" maxlength="80" autocomplete="off" value="楼梯口危险区">
+              </label>
+              <label for="zone-points">顶点坐标（每行 x,y）
+                <textarea id="zone-points" name="zone-points" spellcheck="false" aria-describedby="zone-helper">0.55,0.30&#10;0.90,0.30&#10;0.90,0.88&#10;0.55,0.88</textarea>
+              </label>
+              <p id="zone-helper" class="helper">坐标范围 0.00–1.00。可直接输入，或启用“画布加点”后点击画面；无需精确鼠标操作。</p>
+              <div class="form-actions">
+                <button id="undo-point" class="btn" type="button">撤销一点</button>
+                <button id="clear-points" class="btn" type="button">清空顶点</button>
+              </div>
+              <button id="save-zone" class="btn btn-primary" type="submit">保存区域版本</button>
+              <div id="form-state" class="inline-state" role="status" aria-live="polite">区域尚未修改。</div>
+            </form>
+          </section>
+
+          <section class="card" aria-labelledby="event-title">
+            <div class="card-head">
+              <div><h2 id="event-title">最近候选事实</h2><p>内存环仅用于观察；可靠性以 Outbox 状态为准</p></div>
+              <span id="event-count" class="chip"><strong>0</strong> 项</span>
+            </div>
+            <section id="event-ingress" class="ingress-summary" aria-labelledby="event-ingress-title" role="status" aria-live="polite" aria-atomic="true">
+              <div class="ingress-head">
+                <h3 id="event-ingress-title">Bell 可靠投递</h3>
+                <span class="ingress-state"><i id="ingress-dot" class="status-dot" aria-hidden="true"></i><span id="ingress-label">未启用</span></span>
+              </div>
+              <p id="ingress-copy" class="ingress-copy">可靠投递未启用；候选事实不会被标记为 Bell 已接收。</p>
+              <dl id="ingress-counts" class="ingress-counts" aria-label="Outbox 投递计数" hidden>
+                <div><dt>待投递</dt><dd id="ingress-queued">0</dd></div>
+                <div><dt>投递中</dt><dd id="ingress-delivering">0</dd></div>
+                <div><dt>已送达</dt><dd id="ingress-delivered">0</dd></div>
+                <div><dt>死信</dt><dd id="ingress-dead-letter">0</dd></div>
+              </dl>
+            </section>
+            <div id="event-list" class="event-list" aria-live="polite">
+              <div class="empty">人员从区域外进入后，这里会出现一次候选事实。</div>
+            </div>
+          </section>
+        </aside>
+      </div>
+
+      <section class="architecture-note" aria-label="系统边界说明">
+        <svg class="icon" viewBox="0 0 24 24" aria-hidden="true"><path d="M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z"/><path d="M9 12l2 2 4-4"/></svg>
+        <div><strong>边界清楚比动画更重要</strong><p>Sense/MediaMTX 负责稳定供流；本页只展示 Brain 的匿名检测与判定；录像、事件存储、处置和通知仍归 Bell。真实 URL、凭据和客户标识不会出现在页面或日志。</p></div>
+      </section>
+      <div id="announcer" class="sr-only" aria-live="polite"></div>
+    </main>
+  </div>
+
+  <script>
+    (() => {
+      "use strict";
+      const $ = (id) => document.getElementById(id);
+      const frame = $("video-frame");
+      const canvas = $("overlay");
+      const context = canvas.getContext("2d");
+      const token = document.querySelector('meta[name="brain-demo-token"]').content;
+      let runtimeAvailable = location.protocol === "http:" || location.protocol === "https:";
+      let paused = false;
+      let editMode = false;
+      let state = null;
+      let offlineSequence = 0;
+      let offlineTriggered = false;
+      let ingressSignature = "";
+
+      const offlineState = () => {
+        offlineSequence += 1;
+        const phase = ((offlineSequence - 1) % 160) / 159;
+        const center = -0.04 + phase * 1.08;
+        const bbox = [Math.max(0, center - .04), .34, Math.min(1, center + .04), .82];
+        const inside = center >= .55 && center <= .90;
+        const events = state && state.events ? state.events : [];
+        if (inside && !offlineTriggered) {
+          offlineTriggered = true;
+          events.unshift({source_event_id: `BRN-OFFLINE-${String(offlineSequence).padStart(6, "0")}`, kind: "zone_entry", track_id: "P-DEMO-001", zone_id: "zone-demo-01", occurred_at: new Date().toISOString(), fixture: true});
+        }
+        if (!inside && center < .50) offlineTriggered = false;
+        return {
+          prototype: true,
+          notice: "离线 HTML 原型数据；不是服务端或模型输出。",
+          source: {mode: "offline", label: "离线原型回放", fixture: true, connected: true, ref: "prototype-only"},
+          detector: {name: "scripted_prototype", production_ready: false},
+          frame: {sequence: offlineSequence, width: 960, height: 540, captured_at: new Date().toISOString()},
+          inference: {target_fps: 2, latency_ms: 0},
+          zone: state && state.zone ? state.zone : {id: "zone-demo-01", name: "楼梯口危险区", version: 1, points: parsePoints(false)},
+          detections: bbox[2] - bbox[0] > .01 ? [{track_id: "P-DEMO-001", class: "person", bbox, detector_score: null, inside_zone: inside}] : [],
+          events,
+          event_ingress: {enabled: false},
+          last_error_code: null
+        };
+      };
+
+      function parsePoints(showError = true) {
+        try {
+          const points = $("zone-points").value.split(/\r?\n/).filter(line => line.trim()).map(line => {
+            const parts = line.split(",").map(value => Number(value.trim()));
+            if (parts.length !== 2 || parts.some(value => !Number.isFinite(value) || value < 0 || value > 1)) throw new Error();
+            return {x: parts[0], y: parts[1]};
+          });
+          if (points.length < 3 || points.length > 32) throw new Error();
+          return points;
+        } catch (_) {
+          if (showError) setFormState("请输入 3–32 行有效坐标，每个值须在 0.00–1.00。", true);
+          return [];
+        }
+      }
+
+      function setPoints(points) {
+        $("zone-points").value = points.map(point => `${Number(point.x).toFixed(3)},${Number(point.y).toFixed(3)}`).join("\n");
+      }
+
+      function setFormState(message, error = false) {
+        const target = $("form-state");
+        target.textContent = message;
+        target.style.borderLeftColor = error ? "var(--danger)" : "var(--cyan)";
+      }
+
+      function formatTime(value) {
+        if (!value) return "—";
+        const date = new Date(value);
+        return Number.isNaN(date.getTime()) ? "—" : new Intl.DateTimeFormat("zh-CN", {hour: "2-digit", minute: "2-digit", second: "2-digit", hour12: false}).format(date);
+      }
+
+      function drawOfflineBackground() {
+        context.fillStyle = "#111a2b";
+        context.fillRect(0, 0, canvas.width, canvas.height);
+        context.fillStyle = "#1e2c43";
+        context.fillRect(0, canvas.height * .72, canvas.width, canvas.height * .28);
+        context.strokeStyle = "#2b3a52";
+        for (let x = 0; x < canvas.width; x += 80) {
+          context.beginPath(); context.moveTo(x, canvas.height * .72); context.lineTo(x + 80, canvas.height); context.stroke();
+        }
+        context.fillStyle = "#7dd3fc";
+        context.font = "700 18px Segoe UI";
+        context.fillText("OFFLINE PROTOTYPE DATA", 24, 38);
+      }
+
+      function drawOverlay() {
+        if (!state) return;
+        context.clearRect(0, 0, canvas.width, canvas.height);
+        if (!runtimeAvailable) drawOfflineBackground();
+        const points = parsePoints(false).length ? parsePoints(false) : state.zone.points;
+        if (points.length >= 3) {
+          context.beginPath();
+          points.forEach((point, index) => {
+            const x = point.x * canvas.width, y = point.y * canvas.height;
+            if (index === 0) context.moveTo(x, y); else context.lineTo(x, y);
+          });
+          context.closePath();
+          context.fillStyle = "rgba(251, 191, 36, .10)";
+          context.fill();
+          context.strokeStyle = "#fbbf24";
+          context.lineWidth = 3;
+          context.stroke();
+          points.forEach((point, index) => {
+            context.beginPath(); context.arc(point.x * canvas.width, point.y * canvas.height, 6, 0, Math.PI * 2);
+            context.fillStyle = "#fbbf24"; context.fill();
+            context.fillStyle = "#111827"; context.font = "700 10px Segoe UI"; context.fillText(String(index + 1), point.x * canvas.width - 3, point.y * canvas.height + 3);
+          });
+        }
+        state.detections.forEach(item => {
+          const [x1, y1, x2, y2] = item.bbox;
+          const x = x1 * canvas.width, y = y1 * canvas.height, width = (x2 - x1) * canvas.width, height = (y2 - y1) * canvas.height;
+          context.strokeStyle = item.inside_zone ? "#fb7185" : "#38bdf8";
+          context.lineWidth = 3;
+          context.strokeRect(x, y, width, height);
+          const label = `${item.track_id} · ${item.inside_zone ? "区域内" : "区域外"}`;
+          context.font = "700 14px Segoe UI";
+          const labelWidth = context.measureText(label).width + 14;
+          context.fillStyle = item.inside_zone ? "#be4058" : "#0878a4";
+          context.fillRect(x, Math.max(0, y - 25), labelWidth, 24);
+          context.fillStyle = "#fff";
+          context.fillText(label, x + 7, Math.max(17, y - 8));
+        });
+      }
+
+      function renderEvents(events) {
+        $("event-count").innerHTML = `<strong>${events.length}</strong> 项`;
+        if (!events.length) {
+          $("event-list").innerHTML = '<div class="empty">人员从区域外进入后，这里会出现一次候选事实。</div>';
+          return;
+        }
+        $("event-list").replaceChildren(...events.slice(0, 100).map(event => {
+          const article = document.createElement("article"); article.className = "event";
+          const head = document.createElement("div"); head.className = "event-head";
+          const title = document.createElement("strong"); title.textContent = `${event.track_id} 进入 ${state.zone.name}`;
+          const tag = document.createElement("span"); tag.className = "event-tag"; tag.textContent = event.fixture ? "夹具候选" : "检测候选";
+          head.append(title, tag);
+          const time = document.createElement("time"); time.dateTime = event.occurred_at; time.textContent = `${formatTime(event.occurred_at)} · ${event.kind}`;
+          const delivery = document.createElement("div"); delivery.className = "event-delivery"; delivery.textContent = event.delivery_status === "outbox_persisted" ? "交接：Outbox 已持久化" : "交接：仅内存观察";
+          const code = document.createElement("code"); code.textContent = event.source_event_id;
+          article.append(head, time, delivery, code); return article;
+        }));
+      }
+
+      function renderIngress(value = {enabled: false}) {
+        const enabled = value.enabled === true;
+        const queued = Number(value.queued) || 0;
+        const delivering = Number(value.delivering) || 0;
+        const delivered = Number(value.delivered) || 0;
+        const deadLetter = Number(value.dead_letter) || 0;
+        const errorCode = typeof value.last_error_code === "string" ? value.last_error_code : "";
+        const nextSignature = JSON.stringify([enabled, queued, delivering, delivered, deadLetter, errorCode]);
+        if (nextSignature === ingressSignature) return;
+        ingressSignature = nextSignature;
+        const dot = $("ingress-dot");
+        const counts = $("ingress-counts");
+        counts.hidden = !enabled;
+        $("ingress-queued").textContent = String(queued);
+        $("ingress-delivering").textContent = String(delivering);
+        $("ingress-delivered").textContent = String(delivered);
+        $("ingress-dead-letter").textContent = String(deadLetter);
+        if (!enabled) {
+          dot.className = "status-dot";
+          $("ingress-label").textContent = "未启用";
+          $("ingress-copy").textContent = "可靠投递未启用；候选事实不会被标记为 Bell 已接收。";
+        } else if (deadLetter > 0) {
+          dot.className = "status-dot error";
+          $("ingress-label").textContent = "需要处理";
+          $("ingress-copy").textContent = `存在死信${errorCode ? `（${errorCode}）` : ""}；请检查 Bell 绑定、鉴权或候选字段后再处理。`;
+        } else if (errorCode || queued > 0 || delivering > 0) {
+          dot.className = "status-dot warning";
+          $("ingress-label").textContent = errorCode ? "正在重试" : "投递中";
+          $("ingress-copy").textContent = errorCode ? `Outbox 已保留候选并自动重试（${errorCode}）。` : "候选已持久化到本地 Outbox，正在等待 Bell 确认。";
+        } else {
+          dot.className = "status-dot online";
+          $("ingress-label").textContent = "投递正常";
+          $("ingress-copy").textContent = "Outbox 可用；Bell 返回 accepted 或 duplicate 后才计为已送达。";
+        }
+      }
+
+      function render(next) {
+        state = next;
+        $("connection-dot").className = `status-dot ${next.source.connected ? "online" : "warning"}`;
+        $("connection-text").textContent = next.source.connected ? "画面在线" : "来源不可用";
+        $("source-label").textContent = next.source.label;
+        $("zone-version").textContent = `v${next.zone.version}`;
+        $("mode-badge").textContent = next.source.fixture ? "夹具模式 · 非模型输出" : "HOG 演示适配器 · 非生产模型";
+        $("sequence").textContent = String(next.frame.sequence);
+        $("captured-at").textContent = formatTime(next.frame.captured_at);
+        $("fps").textContent = `${Number(next.inference.target_fps).toFixed(1)} FPS`;
+        $("latency").textContent = next.inference.latency_ms == null ? "—" : `${Number(next.inference.latency_ms).toFixed(1)} ms`;
+        $("person-count").textContent = String(next.detections.length);
+        $("inside-count").textContent = String(next.detections.filter(item => item.inside_zone).length);
+        $("video-label").textContent = `${next.source.label} · ${next.detector.name} · ${next.notice}`;
+        if (document.activeElement !== $("zone-name") && document.activeElement !== $("zone-points")) {
+          $("zone-name").value = next.zone.name; setPoints(next.zone.points);
+        }
+        renderIngress(next.event_ingress);
+        renderEvents(next.events);
+        drawOverlay();
+      }
+
+      async function poll() {
+        if (paused) return;
+        if (runtimeAvailable) {
+          try {
+            const response = await fetch("/api/v1/state", {cache: "no-store"});
+            if (!response.ok) throw new Error();
+            const next = await response.json();
+            frame.hidden = false;
+            frame.src = `/api/v1/frame.jpg?t=${encodeURIComponent(next.frame.sequence)}`;
+            render(next);
+            return;
+          } catch (_) {
+            runtimeAvailable = false;
+            frame.hidden = true;
+            setFormState("未连接本地 Brain 服务，已切换为离线原型数据。", false);
+          }
+        }
+        render(offlineState());
+      }
+
+      frame.addEventListener("load", drawOverlay);
+      $("toggle-preview").addEventListener("click", event => {
+        paused = !paused;
+        event.currentTarget.setAttribute("aria-pressed", String(paused));
+        event.currentTarget.querySelector("span").textContent = paused ? "继续刷新" : "暂停刷新";
+        $("announcer").textContent = paused ? "预览刷新已暂停" : "预览刷新已继续";
+        if (!paused) poll();
+      });
+      $("edit-zone").addEventListener("click", event => {
+        editMode = !editMode;
+        event.currentTarget.setAttribute("aria-pressed", String(editMode));
+        event.currentTarget.querySelector("span").textContent = editMode ? "结束加点" : "画布加点";
+        setFormState(editMode ? "画布加点已启用；键盘用户可继续使用坐标表单。" : "画布加点已结束。", false);
+      });
+      canvas.addEventListener("pointerdown", event => {
+        if (!editMode) return;
+        const points = parsePoints(false);
+        if (points.length >= 32) { setFormState("区域最多 32 个顶点。", true); return; }
+        const rect = canvas.getBoundingClientRect();
+        points.push({x: Math.max(0, Math.min(1, (event.clientX - rect.left) / rect.width)), y: Math.max(0, Math.min(1, (event.clientY - rect.top) / rect.height))});
+        setPoints(points); drawOverlay(); setFormState(`已添加第 ${points.length} 个顶点，尚未保存。`);
+      });
+      $("undo-point").addEventListener("click", () => {
+        const points = parsePoints(false); if (points.length) points.pop(); setPoints(points); drawOverlay(); setFormState("已撤销最后一个顶点，尚未保存。", false);
+      });
+      $("clear-points").addEventListener("click", () => { $("zone-points").value = ""; drawOverlay(); setFormState("顶点已清空；至少输入 3 个顶点后才能保存。", false); });
+      $("zone-points").addEventListener("input", drawOverlay);
+      $("zone-form").addEventListener("submit", async event => {
+        event.preventDefault();
+        const points = parsePoints(true); if (!points.length) return;
+        const name = $("zone-name").value.trim();
+        if (!name) { setFormState("请输入区域名称。", true); $("zone-name").focus(); return; }
+        const button = $("save-zone"); button.disabled = true; button.textContent = "正在保存";
+        if (runtimeAvailable) {
+          try {
+            const response = await fetch("/api/v1/zones/active", {method: "PUT", headers: {"Content-Type": "application/json", "X-Brain-Demo-Token": token}, body: JSON.stringify({name, points})});
+            if (!response.ok) throw new Error();
+            const zone = await response.json();
+            state.zone = zone; render(state); setFormState(`区域 v${zone.version} 已保存；track 区域状态已重新建立。`);
+          } catch (_) { setFormState("区域保存失败，请检查本地服务后重试；草稿仍保留。", true); }
+        } else {
+          state.zone = {...state.zone, name, points, version: state.zone.version + 1}; render(state); setFormState(`离线原型区域 v${state.zone.version} 已在当前页面保存，刷新后不会保留。`);
+        }
+        button.disabled = false; button.textContent = "保存区域版本";
+      });
+
+      poll();
+      window.setInterval(poll, 500);
+    })();
+  </script>
+</body>
+</html>

docs/raw/contracts/README.md

@@ -47,6 +47,7 @@
 | kind | 含义 | 默认 severity | 产出方 | 状态 |
 | --- | --- | --- | --- | --- |
 | `fall` | 人员摔倒确认 | `high` | silver_pose FSM 进入 CONFIRMED | ✅ 已上线 |
+| `zone_entry` | 匿名 track 从区域外进入区域内 | `medium` | Brain 区域进入判定 | ✅ T-019 ingress 已接入 |
 
 ## 4. silver_pose → 契约 映射表
 
@@ -85,7 +86,7 @@ mapper 的完整实现规格。左列出处见《07》§1。
 
 已实测（`REJECT` = schema 能拦，`ACCEPT` = 拦不住）：
 
-schema **能**拦：省略必填键 / 非法 ULID / 顶层多余字段 / outcome 越界 / `config_version` 空串 / `snapshot_uris` 空数组 / 负 latency / kind 大写。
+schema **能**拦：省略必填键 / 非法 ULID / 顶层多余字段 / outcome 越界 / `config_version` 空串 / 负 latency / kind 大写。`snapshot_uris` 空数组对非成像事件是合法值，见修订记录、雷达示例和 schema 的 `minItems: 0`。
 
 schema **拦不住**，需在 mapper 与平台入口各加一道断言：
 

docs/research/sense-16-stream-capacity.md

@@ -0,0 +1,109 @@
+# Sense 本地 16 路容量与批量收敛基线
+
+> T-014 正式证据，运行日期：2026-08-10。本文只证明固定主机、固定版本和低码率合成负载下的本地软件基线，不是生产 SLA。
+
+## 1. 结论
+
+在 24 个逻辑处理器、15.78 GiB 内存的 Windows 主机上，提交 `d029067aa750ad75a2d79ef8e6c51b6bad55096d` 使用隔离 PostgreSQL、真实 Sense Control API、两套独立 MediaMTX 和 16 个独立 FFmpeg publisher 完成正式验收：
+
+- 16 个 disabled 视频设备创建后，三轮 16 项批量操作全部成功，生产 MediaMTX 配置 Path 数按 `16 → 0 → 16` 收敛。
+- 16 路 enabled 后，第 17 路 enabled 创建稳定返回 `quota_exceeded`，设备台账仍为 16 项；disabled 项不冒充已占用视频通道。
+- 同时停止固定第 5～8 路后，精确 4 路受影响、其余 12 路保持在线；恢复后 5.1 秒回到 16 路在线和 `unconverged=0`。
+- 正式稳定窗口为 1800.1 秒，每 10 秒绝对节拍采样，共 180 个样本；最大与最终未收敛数均为 0，最终在线 Path 为 16，入站帧错误增量为 0。
+
+因此，默认 16 路的 Sense/PostgreSQL/MediaMTX 控制面与拉流闭环具备可重复的本地软件基线。该结论不证明 16 台真实摄像头、客户网络、录像、下游观看、AI 解码/推理、GPU、64/128 路分片或生产 SLA，也不解除 T-007/T-013。
+
+## 2. 固定环境与负载
+
+| 项目 | 正式值 |
+| --- | --- |
+| 仓库提交 | `d029067aa750ad75a2d79ef8e6c51b6bad55096d` |
+| Sense 二进制 SHA-256 | `e6fa01991152cf7e9f2a1e420422a12d474dfe7be10530ff2924671d46cc7871` |
+| Go | `go1.26.5 windows/amd64`（在 `Sense/` 模块上下文读取） |
+| PostgreSQL | `17.10`，单次运行隔离临时集群 |
+| MediaMTX | `v1.19.3` |
+| MediaMTX Windows amd64 ZIP SHA-256 | `5d82148d1032a6a190d9909a2997d9989457aaadf49af87dd02cd4512d31bebe` |
+| MediaMTX EXE SHA-256 | `1cda85249312cb9463f9f94c5a712b9f160c9af3fd9490f0d4723911d7880e05` |
+| FFmpeg | `8.1.2-full_build-www.gyan.dev` |
+| 主机 | Windows，24 logical processors，15.78 GiB memory |
+| 单路夹具 | 640×360、10 fps、H.264、无音频、无人物 |
+| 发布方式 | 16 个独立 FFmpeg 进程，各自循环预编码夹具并以 `-c copy` 发布独立 RTSP Path |
+
+预编码 copy 发布是为了不把 16 路软件编码负载混入 Sense/MediaMTX 基线。它仍产生 16 个可独立停止和恢复的发布进程，但不能代表真实摄像头编码器、复杂 GOP、高码率、音频或公网抖动。
+
+## 3. 运行方法与安全边界
+
+从仓库根目录执行：
+
+```powershell
+./Sense/scripts/t014-capacity.ps1 -PgRoot D:\pgsql17 -PreflightOnly
+./Sense/scripts/t014-capacity.ps1 -PgRoot D:\pgsql17 -OutputPath (Join-Path $env:TEMP 'yovision-t014-formal-final.json')
+```
+
+调试可显式传入 `-ObservationMinutes 1`，但输出固定标记 `formal_eligible=false`，不能作为正式验收。
+
+脚本在系统临时目录生成媒体、Sense 二进制、凭据文件和 PGDATA，只绑定随机回环端口；migration 读取 `001`～`011` 并重复回放，不读取或修改 `D:\pgsql17\data`。结果 JSON 不包含 token、DSN、临时端口、设备 ID、Path/source URI 或凭据引用。正式退出后复查 session、FFmpeg、MediaMTX 和 Sense 数量均为 0，本机现有 5432 listener 前后未变化。
+
+## 4. 功能与时序结果
+
+| 门禁 | 正式结果 |
+| --- | ---: |
+| 16 个独立 publisher 就绪 | 7.6 s |
+| 首轮 enable batch | `succeeded`，16 项，请求 0.041 s |
+| 首轮 enable 收敛 | 3.1 s |
+| 第 17 路 enabled | 拒绝，`quota_exceeded` |
+| disable batch | `succeeded`，16 项，请求 0.015 s |
+| disable 收敛 | 1.0 s |
+| 第二轮 enable batch | `succeeded`，16 项，请求 0.046 s |
+| 第二轮 enable 收敛 | 3.1 s |
+| 配置 Path | `16 → 0 → 16` |
+| 四路故障检测 | 1.0 s，影响 4 路，其余 12 路在线 |
+| 四路恢复 | 5.1 s，最终未收敛 0 |
+
+批量启停使用真实 `/api/v1/sites/{site_id}/devices:batchDesiredState`，每轮提交前重新读取各设备最新 ETag；不能用创建响应中的旧 ETag 与后台调和竞速。每轮 operation 必须为 `succeeded` 且 16 个逐项结果全部成功。
+
+## 5. 30 分钟稳定性与资源观测
+
+| 指标 | 正式结果 |
+| --- | ---: |
+| 观察时长 | 1800.1 s |
+| 采样节拍 / 样本 | 10 s / 180 |
+| 最大未收敛数 | 0 |
+| 最终未收敛数 | 0 |
+| 最终在线 Path | 16 |
+| 聚合入站码率 | 15.443 Mbps |
+| 入站帧错误增量 | 0 |
+| Sense CPU 总时间 | 5.594 s |
+| Sense working set 峰值 | 69.99 MiB |
+| Sense private bytes 峰值 | 57.58 MiB |
+| Sense handle 峰值 | 228 |
+| 生产 MediaMTX CPU 总时间 | 26.812 s |
+| 生产 MediaMTX working set 峰值 | 45.27 MiB |
+| 生产 MediaMTX private bytes 峰值 | 79.23 MiB |
+| 生产 MediaMTX handle 峰值 | 295 |
+| PostgreSQL 业务库连接峰值 | 3 |
+| PostgreSQL 数据库大小 | 8.90 MiB |
+
+归一化 CPU 平均值与峰值在 24 逻辑处理器主机上四舍五入到三位小数后为 0.000%，因此报告保留进程 CPU 总秒数作为低负载证据；不能据此推导通用硬件下限。
+
+## 6. 失败记录与工具修正
+
+正式结论只取最后一次完整成功运行。研发过程中保留以下失败，不拼接为成功证据：
+
+1. MediaMTX 发布 ZIP 与解压后 EXE 的 SHA-256 不同，脚本分别冻结并校验两者。
+2. disabled 设备不消耗视频通道；第 17 路门禁改为在 16 路 enabled 后创建 enabled 设备，符合实际配额语义。
+3. PowerShell 读取 `application/problem+json` 时可能得到 byte array；脚本显式按 UTF-8 解码后校验稳定错误码。
+4. 把 `pg_ctl start` 接入 PowerShell 输出管道会让 PostgreSQL 继承管道句柄并阻塞；启动改为直接执行并检查退出码。
+5. Windows 退出时 `sense-api.exe` 曾短暂持有文件锁；清理改为共享截止时间内终止全部进程、完成异步输出读取、释放 `Process` 句柄并重试删除。
+6. “固定睡 10 秒再查询”会把查询耗时累计进采样间隔，30 分钟不足 180 个样本；改为按绝对时间点调度第 1～180 个样本。
+7. 根目录 Go launcher 为 1.23.0，但 `Sense/go.mod` 冻结并实际构建使用 1.26.5；版本证据改为在 `Sense/` 模块上下文读取。
+8. 首轮 batch 曾复用创建响应 ETag，与后台调和的资源版本更新竞速；现在三轮 batch 都在提交前读取最新 ETag，失败诊断只输出状态/错误码计数。
+
+每次失败都没有生成正式成功 JSON，且相关临时 PostgreSQL、媒体和 Sense 进程已停止，单次 session 已清理。
+
+## 7. 后续验收
+
+- T-007 仍需至少 5 条独立真实摄像头上游与现场网络，才能形成真实多路故障隔离和生产试点证据。
+- T-013 等客户网络拓扑、地址规划和部署权限具备后，再验证 WireGuard 与断网补传。
+- 64/128 路必须在后续任务中分别验证媒体分片、带宽、解码、AI/GPU、证据存储和单分片故障域；本报告不外推这些结论。
+- 进入 M3 前应优先冻结并实现 Bell 事件不可变存储，以及 Sense Outbox 到 Bell 全局审计的 relay 边界。

docs/routes.md

@@ -20,6 +20,15 @@
 
 这些是页面职责占位，不等于已冻结 URL；实现任务须更新本文件后再编码。
 
+## 工程演示路由
+
+| 路由 | 所有者 | 关键约束 |
+| --- | --- | --- |
+| `/brain-demo` | Brain T-017 回环工程服务 | 只允许显式回环监听；可独立打开 `docs/design/brain/index.html` 使用标识清楚的离线原型数据。不是 Bell 公共业务路由，不展示流 URL/凭据，不产生平台事件 ID、Alert 或处置状态 |
+| `/sense-console/` | Sense T-018 回环工程服务 | 默认关闭；复用 Control API v1，设备分页默认 16 项，最多 4 路按需 WebRTC 预览。只允许 Sense 与 MediaMTX 播放端均为显式回环地址；不是录像/回放或 Bell 公共业务路由 |
+
+这些路由只为开发、售前和实施联调。正式客户值班端仍由 Bell `/events`、`/alerts` 等受认证路由承载；不得把 Brain 工程页或 T-018 Sense 回环控制台暴露到非可信网络或嵌入客户公共系统。
+
 ## App 候选导航
 
 - 预警：待确认与升级中的事件。
@@ -44,6 +53,6 @@ Bell 响应式管理端的底部主导航最多 5 项；Site/Area、RBAC 与审
 
 ## 组件归属
 
-- 业务组件放 `Bell/web/`，不放进 Sense 或 Brain。
+- 业务组件放 `Bell/web/`，不放进 Sense 或 Brain；T-017 的 `/brain-demo` 是明确隔离的回环工程页，不改变该归属。
 - 流状态只通过 Bell/Sense 的受控业务 API 展示，不直接把 MediaMTX 管理端暴露给业务用户。
 - 共用筛选、分页、批量结果和状态时间线组件在前端脚手架确定后再分层，不提前臆造目录。

docs/runbooks/sense-reconciliation.md

@@ -0,0 +1,65 @@
+# Sense 对账与孤儿处置 Runbook
+
+本文适用于 PostgreSQL v5（migration `001`～`011`）与 MediaMTX `v1.19.3`。SQLite 仅用于单进程开发，不具备本 runbook 的多实例 fencing 或孤儿处置语义。
+
+## 观察入口
+
+- `GET /healthz`：进程存活。
+- `GET /readyz`：数据库 schema 和权限前置检查已完成。
+- `GET /metrics`：低基数进程指标；不包含 tenant、Site、device、Path 或 URI 标签。
+- 日志中的 `background convergence error`：只输出稳定、脱敏错误，不输出 stream URI 或凭据。
+
+重点指标：
+
+- `sense_reconcile_devices{state="unconverged"}`：未收敛的 enabled 视频设备数。
+- `sense_reconcile_items_total{result="lease_lost"}`：worker 在执行前或提交时失去 fencing token 的次数；失去租约的 worker 不得继续产生外部变更。
+- `sense_orphan_paths{classification="owned_stale|unowned"}`：最近一次成功扫描的两类差异。
+- `sense_orphan_cleanup_blocked_total`、`sense_orphan_cleanup_items_total`：安全闸阻断和人工处置结果。
+
+## 多实例调和
+
+每个实例应注入唯一、稳定且不含客户信息的 `SENSE_INSTANCE_ID`。PostgreSQL 使用数据库时钟、短事务、`FOR UPDATE SKIP LOCKED` 和随机 fencing token 领取 due row；批量等待中的每一项在调用 ONVIF/MediaMTX 前续租。默认租期 30 秒、单项 deadline 20 秒；operation timeout 必须严格短于租期。
+
+发现 `lease_lost` 时先检查实例 ID 是否重复、数据库时钟和外部调用延迟。不要通过延长到超过 5 分钟或关闭 fencing 规避问题；先定位超时，再在变更评审后同时调整租期和单项 deadline。
+
+## 生成孤儿报告
+
+在已安装 v5 migration、能访问同一 PostgreSQL 和目标 MediaMTX 的受控运维主机执行：
+
+```powershell
+$env:SENSE_DB_DRIVER = 'postgres'
+$env:SENSE_DB_DSN = '由部署环境私下设置'
+$env:SENSE_MEDIAMTX_URL = '受控 MediaMTX API 地址'
+go -C Sense run ./cmd/sense-orphan -mode report
+```
+
+命令只输出 `scan_id`、计数、安全闸结论和过期时间。分类含义：
+
+- `owned_stale`：Sense 有历史 Path 归属记录，但当前没有同一设备继续声明该 Path；可进入受控候选。
+- `unowned`：没有 Sense 归属证据；可能属于人工或其他系统，永远只报告。
+- 当前设备仍声明的 Path 不计入 finding。
+
+不要因为名称相似把 `unowned` 手工改成 owned。先调查其创建者和用途；需要接管时应走独立、可审计的迁移任务。
+
+## 执行受控处置
+
+仅当报告显示 `safety_allowed=true`，并在 15 分钟有效期内由授权运维人员执行：
+
+```powershell
+go -C Sense run ./cmd/sense-orphan -mode apply `
+  -scan-id 'scan_...' `
+  -actor 'operator-id' `
+  -confirm 'DELETE scan_...'
+```
+
+执行前程序会重新枚举 Path、重新读取归属并重新计算：候选必须仍是报告集合的子集、数量 1～128，且满足 `候选数 × 100 <= 当前 Path 总数 × 10`。过期、比例超限、归属变化、确认不匹配或租约冲突都会整批零删除；没有 `force`/bypass。删除逐项记入 PostgreSQL，成功项重复执行会跳过，失败项在快照仍有效且重新计算仍通过时可重试。
+
+## 故障与恢复
+
+- 扫描失败：不产生可执行快照；修复数据库/MediaMTX 连通性后重新 `report`。
+- `ratio_exceeded`：停止自动化，核对 MediaMTX 实例/分片是否选错、台账是否缺失或发生大面积配置漂移；不得拆小批次规避 10% 闸。
+- 部分删除失败：保留输出与数据库处置事实，修复 MediaMTX 后用同一 scan ID 重试；超过 15 分钟必须重新报告和审批。
+- 误删怀疑：立即停止 apply。数据库期望态仍是来源；当前设备声明的 Path 会由调和器重建。无当前设备声明的历史 Path 不自动恢复，应根据变更记录人工确认来源。
+- 回滚 Sense 二进制：先停用 `SENSE_ORPHAN_SCAN_ENABLED` 并停止所有新实例，再回滚；v5 表和已记录事实保留，不执行破坏性 down migration。
+
+本流程只处置 MediaMTX 配置 Path，不删除设备、录像、证据对象或 Bell 数据。