feat(api): 添加多媒体内容支持并优化钱包计费系统

- 在 API 接口定义中为 video_url 和 audio_url 类型添加 mime_type 字段
- 实现 Google Gemini 客户端对视频和音频内容的支持，包括媒体类型检测和数据传输
- 添加 Gemini 客户端测试用例验证多媒体内容转换功能
- 重构 Playground 页面的媒体上传逻辑以支持 MIME 类型传递
- 实现钱包计费预留机制，确保任务执行前余额充足
- 添加钱包冻结余额管理，防止并发操作导致的超扣问题
- 实现计费预留释放逻辑，处理任务失败或取消情况下的资金返还
- 优化数据库事务处理，确保计费操作的原子性和一致性
- 添加数据库集成测试验证迁移脚本执行流程
- 统一 Google Gemini 相关模型提供商标识符映射

apps/api/internal/httpapi/core_flow_integration_test.go

@@ -129,6 +129,13 @@ func TestCoreLocalFlow(t *testing.T) {
 	if _, err := testPool.Exec(ctx, `UPDATE gateway_users SET roles = '["admin"]'::jsonb WHERE username = $1`, username); err != nil {
 		t.Fatalf("promote smoke user: %v", err)
 	}
+	doJSON(t, server.URL, http.MethodPost, "/api/v1/auth/login", "", map[string]any{
+		"account":  username,
+		"password": password,
+	}, http.StatusOK, &loginResponse)
+	if loginResponse.AccessToken == "" {
+		t.Fatal("admin login did not return access token")
+	}
 	var smokeGatewayUserID string
 	if err := testPool.QueryRow(ctx, `SELECT id::text FROM gateway_users WHERE username = $1`, username).Scan(&smokeGatewayUserID); err != nil {
 		t.Fatalf("read smoke gateway user id: %v", err)
@@ -1402,14 +1409,41 @@ func applyMigration(t *testing.T, ctx context.Context, databaseURL string) {
 		t.Fatalf("connect migration db: %v", err)
 	}
 	defer pool.Close()
+	if _, err := pool.Exec(ctx, `
+CREATE TABLE IF NOT EXISTS schema_migrations (
+  version text PRIMARY KEY,
+  applied_at timestamptz NOT NULL DEFAULT now()
+);`); err != nil {
+		t.Fatalf("ensure schema migrations: %v", err)
+	}
 	for _, migrationPath := range migrationFiles {
+		version := strings.TrimSuffix(filepath.Base(migrationPath), filepath.Ext(migrationPath))
+		var exists bool
+		if err := pool.QueryRow(ctx, "SELECT EXISTS (SELECT 1 FROM schema_migrations WHERE version = $1)", version).Scan(&exists); err != nil {
+			t.Fatalf("check migration %s: %v", filepath.Base(migrationPath), err)
+		}
+		if exists {
+			continue
+		}
 		migration, err := os.ReadFile(migrationPath)
 		if err != nil {
 			t.Fatalf("read migration %s: %v", filepath.Base(migrationPath), err)
 		}
-		if _, err := pool.Exec(ctx, string(migration)); err != nil {
+		tx, err := pool.Begin(ctx)
+		if err != nil {
+			t.Fatalf("begin migration %s: %v", filepath.Base(migrationPath), err)
+		}
+		if _, err := tx.Exec(ctx, string(migration)); err != nil {
+			_ = tx.Rollback(ctx)
 			t.Fatalf("apply migration %s: %v", filepath.Base(migrationPath), err)
 		}
+		if _, err := tx.Exec(ctx, "INSERT INTO schema_migrations(version) VALUES($1)", version); err != nil {
+			_ = tx.Rollback(ctx)
+			t.Fatalf("record migration %s: %v", filepath.Base(migrationPath), err)
+		}
+		if err := tx.Commit(ctx); err != nil {
+			t.Fatalf("commit migration %s: %v", filepath.Base(migrationPath), err)
+		}
 	}
 }