Fix repository integration CI failures

Author: AzurCrystal

backend/internal/repository/subsite_repo_integration_test.go

@@ -132,6 +132,7 @@ func TestQuotaReservationRepositoryCreateEnforcesLeaseCapacity(t *testing.T) {
 		AccountID:          accountID,
 		APIKeyID:           apiKeyID,
 		UserID:             userID,
+		GroupID:            &groupID,
 		Platform:           service.PlatformOpenAI,
 		RequestedModel:     "gpt-5.4",
 		MappedModel:        "gpt-5.4",

backend/internal/repository/usage_log_repo.go

@@ -1325,35 +1325,34 @@ func (r *usageLogRepository) bestEffortRecentKey(requestID string, apiKeyID int6
 	return usageLogBatchKey(requestID, apiKeyID), true
 }
 
-func (r *usageLogRepository) GetByID(ctx context.Context, id int64) (log *service.UsageLog, err error) {
+func (r *usageLogRepository) GetByID(ctx context.Context, id int64) (*service.UsageLog, error) {
 	query := "SELECT " + usageLogSelectColumns + " FROM usage_logs WHERE id = $1"
 	rows, err := r.sql.QueryContext(ctx, query, id)
 	if err != nil {
 		return nil, err
 	}
-	defer func() {
-		// 保持主错误优先；仅在无错误时回传 Close 失败。
-		// 同时清空返回值，避免误用不完整结果。
-		if closeErr := rows.Close(); closeErr != nil && err == nil {
-			err = closeErr
-			log = nil
-		}
-	}()
 	if !rows.Next() {
-		if err = rows.Err(); err != nil {
+		if err := rows.Err(); err != nil {
+			_ = rows.Close()
 			return nil, err
 		}
+		_ = rows.Close()
 		return nil, service.ErrUsageLogNotFound
 	}
-	log, err = scanUsageLog(rows)
+	log, err := scanUsageLog(rows)
 	if err != nil {
+		_ = rows.Close()
 		return nil, err
 	}
-	if err = rows.Err(); err != nil {
+	if err := rows.Err(); err != nil {
+		_ = rows.Close()
+		return nil, err
+	}
+	if err := rows.Close(); err != nil {
 		return nil, err
 	}
 	logs := []service.UsageLog{*log}
-	if err = r.hydrateUsageLogWalletDeductions(ctx, logs); err != nil {
+	if err := r.hydrateUsageLogWalletDeductions(ctx, logs); err != nil {
 		return nil, err
 	}
 	*log = logs[0]