diff --git a/admin/handler/web/ai_config_test.go b/admin/handler/web/ai_config_test.go
new file mode 100644
index 0000000..19e84ef
--- /dev/null
+++ b/admin/handler/web/ai_config_test.go
@@ -0,0 +1,121 @@
+package web
+
+import (
+	"database/sql"
+	"html/template"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+
+	"cmautobuy/admin/internal/testutil"
+	"cmautobuy/admin/model"
+	"cmautobuy/admin/repository"
+	"cmautobuy/admin/service"
+)
+
+func TestRedirectAIConfig_区分成功和校验失败(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	tests := []struct {
+		name, message, errorMessage, wantKey, wantValue string
+	}{
+		{name: "成功", message: "配置已保存", wantKey: "msg", wantValue: "配置已保存"},
+		{name: "校验失败", errorMessage: "Base URL 无效", wantKey: "error", wantValue: "Base URL 无效"},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			recorder := httptest.NewRecorder()
+			context, _ := gin.CreateTestContext(recorder)
+			context.Request = httptest.NewRequest(http.MethodPost, "/settings/ai/save", nil)
+			redirectAIConfig(context, test.message, test.errorMessage)
+			if context.Writer.Status() != http.StatusSeeOther {
+				t.Fatalf("状态码=%d，期望 303", context.Writer.Status())
+			}
+			location, err := url.Parse(recorder.Header().Get("Location"))
+			if err != nil || location.Path != "/settings/ai" {
+				t.Fatalf("Location=%q err=%v", recorder.Header().Get("Location"), err)
+			}
+			if got := location.Query().Get(test.wantKey); got != test.wantValue {
+				t.Fatalf("%s=%q，期望 %q", test.wantKey, got, test.wantValue)
+			}
+			otherKey := "msg"
+			if test.wantKey == "msg" {
+				otherKey = "error"
+			}
+			if location.Query().Has(otherKey) {
+				t.Fatalf("成功和错误参数不能混用: %s", location.String())
+			}
+		})
+	}
+}
+
+func TestAIConfigSave_校验失败使用Error跳转(t *testing.T) {
+	context, recorder, _ := aiConfigSaveContext(t, url.Values{"confidence_threshold": {"not-a-number"}})
+	context.Set(currentUserKey, &model.User{Role: model.RoleAdmin, Status: model.UserActive})
+	(&Handler{}).AIConfigSave(context)
+	location, err := url.Parse(recorder.Header().Get("Location"))
+	if context.Writer.Status() != http.StatusSeeOther || err != nil || location.Query().Get("error") == "" || location.Query().Has("msg") {
+		t.Fatalf("校验失败跳转错误: code=%d location=%q err=%v", context.Writer.Status(), recorder.Header().Get("Location"), err)
+	}
+}
+
+func TestAIConfigSave_数据库异常返回500而非成功跳转(t *testing.T) {
+	db, err := sql.Open("mysql", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Close(); err != nil {
+		t.Fatal(err)
+	}
+	context, recorder, engine := aiConfigSaveContext(t, validAIConfigForm())
+	context.Set(currentUserKey, &model.User{UserID: "USR-1", Role: model.RoleAdmin, Status: model.UserActive})
+	engine.SetHTMLTemplate(template.Must(template.New("root").Parse(
+		`{{define "partials/error"}}{{.Message}}{{end}}`,
+	)))
+	(&Handler{db: db, aiPolicy: service.NewAIEndpointPolicy(nil)}).AIConfigSave(context)
+	if recorder.Code != http.StatusInternalServerError || recorder.Header().Get("Location") != "" {
+		t.Fatalf("数据库异常不能伪装成 303 成功: code=%d location=%q", recorder.Code, recorder.Header().Get("Location"))
+	}
+}
+
+func TestAIConfigSave_真实MySQL新增后列表可见并使用Msg跳转(t *testing.T) {
+	db := testutil.OpenMySQL(t)
+	actor := model.User{UserID: "USR-WEB-AI", Username: "web-ai-admin", PasswordHash: "test-hash",
+		Role: model.RoleAdmin, Status: model.UserActive, PasswordChangedAt: model.NowISO(),
+		CreatedAt: model.NowISO(), UpdatedAt: model.NowISO()}
+	if err := repository.CreateUser(db, actor); err != nil {
+		t.Fatal(err)
+	}
+	context, recorder, _ := aiConfigSaveContext(t, validAIConfigForm())
+	context.Set(currentUserKey, &actor)
+	(&Handler{db: db, aiPolicy: service.NewAIEndpointPolicy(nil)}).AIConfigSave(context)
+	location, err := url.Parse(recorder.Header().Get("Location"))
+	if context.Writer.Status() != http.StatusSeeOther || err != nil || location.Query().Get("msg") == "" || location.Query().Has("error") {
+		t.Fatalf("成功跳转错误: code=%d location=%q err=%v", context.Writer.Status(), recorder.Header().Get("Location"), err)
+	}
+	items, err := repository.ListAIProviders(db)
+	if err != nil || len(items) != 1 || items[0].Name != "测试主线路" {
+		t.Fatalf("跳转后应能查询新增配置: items=%+v err=%v", items, err)
+	}
+}
+
+func aiConfigSaveContext(t *testing.T, values url.Values) (*gin.Context, *httptest.ResponseRecorder, *gin.Engine) {
+	t.Helper()
+	gin.SetMode(gin.TestMode)
+	recorder := httptest.NewRecorder()
+	context, engine := gin.CreateTestContext(recorder)
+	request := httptest.NewRequest(http.MethodPost, "/settings/ai/save", strings.NewReader(values.Encode()))
+	request.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	context.Request = request
+	return context, recorder, engine
+}
+
+func validAIConfigForm() url.Values {
+	return url.Values{
+		"name": {"测试主线路"}, "base_url": {"https://api.example.com/v1"}, "model": {"model-1"},
+		"timeout_seconds": {"30"}, "max_concurrency": {"2"}, "confidence_threshold": {"85"},
+	}
+}
diff --git a/admin/repository/ai_config.go b/admin/repository/ai_config.go
index 387ce2a..b2ff562 100644
--- a/admin/repository/ai_config.go
+++ b/admin/repository/ai_config.go
@@ -84,7 +84,7 @@ func InsertAIProvider(q Execer, item model.AIProviderConfig) error {
 	_, err := q.Exec(`INSERT INTO ai_provider_configs
 		(provider_id,name,base_url,model,timeout_seconds,max_concurrency,confidence_threshold_bps,
 		enabled,last_test_status,created_by_user_id,updated_by_user_id,created_at,updated_at)
-		VALUES(?,?,?,?,?,?,?,0,'pending',?,?,?,?,?)`, item.ProviderID, item.Name, item.BaseURL,
+		VALUES(?,?,?,?,?,?,?,0,'pending',?,?,?,?)`, item.ProviderID, item.Name, item.BaseURL,
 		item.Model, item.TimeoutSeconds, item.MaxConcurrency, item.ConfidenceThresholdBPS,
 		item.CreatedByUserID, item.UpdatedByUserID, item.CreatedAt, item.UpdatedAt)
 	return aiProviderWriteError("新增 AI 服务商配置", err)
diff --git a/admin/repository/ai_config_test.go b/admin/repository/ai_config_test.go
new file mode 100644
index 0000000..1b4f011
--- /dev/null
+++ b/admin/repository/ai_config_test.go
@@ -0,0 +1,62 @@
+package repository
+
+import (
+	"database/sql"
+	"errors"
+	"reflect"
+	"strings"
+	"testing"
+
+	"cmautobuy/admin/model"
+)
+
+type aiConfigCaptureExecer struct {
+	query string
+	args  []any
+}
+
+func (c *aiConfigCaptureExecer) Exec(query string, args ...any) (sql.Result, error) {
+	c.query = query
+	c.args = append([]any(nil), args...)
+	return aiConfigResult(1), nil
+}
+
+func (c *aiConfigCaptureExecer) Query(string, ...any) (*sql.Rows, error) {
+	return nil, errors.New("本测试不应执行 Query")
+}
+
+func (c *aiConfigCaptureExecer) QueryRow(string, ...any) *sql.Row {
+	panic("本测试不应执行 QueryRow")
+}
+
+type aiConfigResult int64
+
+func (r aiConfigResult) LastInsertId() (int64, error) { return int64(r), nil }
+func (r aiConfigResult) RowsAffected() (int64, error) { return int64(r), nil }
+
+func TestInsertAIProvider_占位符与字段参数一一对应(t *testing.T) {
+	item := model.AIProviderConfig{
+		ProviderID: "AIP-1", Name: "主线路", BaseURL: "https://api.example.com/v1",
+		Model: "model-1", TimeoutSeconds: 30, MaxConcurrency: 2, ConfidenceThresholdBPS: 8500,
+		CreatedByUserID: "USR-CREATE", UpdatedByUserID: "USR-UPDATE",
+		CreatedAt: "2026-08-14T00:00:00Z", UpdatedAt: "2026-08-14T00:01:00Z",
+	}
+	capture := &aiConfigCaptureExecer{}
+	if err := InsertAIProvider(capture, item); err != nil {
+		t.Fatal(err)
+	}
+	if got, want := strings.Count(capture.query, "?"), len(capture.args); got != want {
+		t.Fatalf("INSERT 占位符=%d，参数=%d；两者必须相同", got, want)
+	}
+	wantArgs := []any{item.ProviderID, item.Name, item.BaseURL, item.Model, item.TimeoutSeconds,
+		item.MaxConcurrency, item.ConfidenceThresholdBPS, item.CreatedByUserID,
+		item.UpdatedByUserID, item.CreatedAt, item.UpdatedAt}
+	if !reflect.DeepEqual(capture.args, wantArgs) {
+		t.Fatalf("INSERT 参数顺序错误\n实际: %#v\n期望: %#v", capture.args, wantArgs)
+	}
+	for _, fixed := range []string{"0", "'pending'"} {
+		if !strings.Contains(capture.query, fixed) {
+			t.Fatalf("INSERT 缺少固定初始值 %s", fixed)
+		}
+	}
+}
diff --git a/admin/service/ai_config_test.go b/admin/service/ai_config_test.go
index 0f66811..8eb8b2e 100644
--- a/admin/service/ai_config_test.go
+++ b/admin/service/ai_config_test.go
@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"cmautobuy/admin/model"
+	"cmautobuy/admin/repository"
 )
 
 func TestParseConfidenceThresholdBPS_精确转换(t *testing.T) {
@@ -25,6 +26,37 @@ func TestParseConfidenceThresholdBPS_精确转换(t *testing.T) {
 	}
 }
 
+func TestSaveAIProviderConfig_新增后可查询并与审计同事务(t *testing.T) {
+	db := newTestDB(t)
+	now := time.Date(2026, 8, 14, 1, 2, 3, 0, time.UTC)
+	actor := model.User{UserID: "USR-AI-CONFIG", Username: "ai-admin", PasswordHash: "test-hash",
+		Role: model.RoleAdmin, Status: model.UserActive, PasswordChangedAt: model.NowISO(),
+		CreatedAt: model.NowISO(), UpdatedAt: model.NowISO()}
+	if err := repository.CreateUser(db, actor); err != nil {
+		t.Fatal(err)
+	}
+	input := AIProviderInput{Name: "主线路", BaseURL: "https://api.example.com/v1", Model: "model-1",
+		TimeoutSeconds: 30, MaxConcurrency: 2, ConfidenceThresholdBPS: 8500}
+	providerID, err := SaveAIProviderConfig(db, &actor, input, NewAIEndpointPolicy(nil), now)
+	if err != nil || providerID == "" {
+		t.Fatalf("新增 AI 配置失败: id=%q err=%v", providerID, err)
+	}
+	items, err := repository.ListAIProviders(db)
+	if err != nil || len(items) != 1 || items[0].ProviderID != providerID || items[0].Name != input.Name {
+		t.Fatalf("新增后列表未回显配置: items=%+v err=%v", items, err)
+	}
+	var auditCount int
+	if err := db.QueryRow(`SELECT COUNT(*) FROM ai_provider_audits WHERE provider_id=? AND action='create'`, providerID).Scan(&auditCount); err != nil || auditCount != 1 {
+		t.Fatalf("创建审计数量=%d err=%v", auditCount, err)
+	}
+	if _, err := SaveAIProviderConfig(db, &actor, input, NewAIEndpointPolicy(nil), now.Add(time.Minute)); !IsValidationError(err) {
+		t.Fatalf("重名配置应返回可展示的校验错误: %v", err)
+	}
+	if err := db.QueryRow(`SELECT COUNT(*) FROM ai_provider_configs`).Scan(&auditCount); err != nil || auditCount != 1 {
+		t.Fatalf("失败请求不得留下半条配置: count=%d err=%v", auditCount, err)
+	}
+}
+
 func TestAIEndpointPolicy_阻止凭据和内网地址(t *testing.T) {
 	policy := NewAIEndpointPolicy(nil)
 	for _, raw := range []string{