安全与可靠性: 修复配额并发、投票事务、密码授权与导出完整性

internal/db/questions.go

@@ -128,6 +128,9 @@ func (db *questions) Create(ctx context.Context, opts CreateQuestionOptions) (*Q
 		IsPrivate:         opts.IsPrivate,
 	}
 	err := db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		if err := reserveFeatureQuotaTx(tx, opts.UserID, FeatureQuestion); err != nil {
+			return err
+		}
 		if err := tx.Create(&question).Error; err != nil {
 			return errors.Wrap(err, "create question")
 		}