Refactor brand service and related components

- Removed ListQuestionVersions method and associated types from BrandService and Queries.
- Updated PromptRuleGenerationService to change task naming and handling.
- Enhanced ScheduleTaskService to support filtering by created date range and keyword.
- Introduced InstantTaskService for managing instant tasks with appropriate filtering and response structures.
- Added InstantTaskHandler for handling API requests related to instant tasks.
- Created InstantTaskTab component for the admin web interface to display and manage instant tasks.
- Updated database migrations to rename source types for articles and generation tasks.
- Adjusted models and repository queries to reflect the removal of question version handling.

server/internal/tenant/app/brand_service.go

@@ -429,46 +429,6 @@ func (s *BrandService) DeleteQuestion(ctx context.Context, brandID, questionID i
 	return nil
 }
 
-type QuestionVersionResponse struct {
-	ID           int64  `json:"id"`
-	QuestionID   int64  `json:"question_id"`
-	QuestionText string `json:"question_text"`
-	QuestionHash string `json:"question_hash"`
-	VersionNo    int    `json:"version_no"`
-	IsActive     bool   `json:"is_active"`
-	CreatedAt    string `json:"created_at"`
-}
-
-func (s *BrandService) ListQuestionVersions(ctx context.Context, brandID int64) ([]QuestionVersionResponse, error) {
-	actor := auth.MustActor(ctx)
-	rows, err := s.pool.Query(ctx, `
-		SELECT v.id, v.question_id, v.question_text, v.question_hash, v.version_no, v.is_active, v.created_at
-		FROM brand_question_versions v
-		JOIN brand_questions q ON q.id = v.question_id
-		WHERE q.brand_id = $1 AND q.tenant_id = $2
-		ORDER BY v.created_at DESC
-	`, brandID, actor.TenantID)
-	if err != nil {
-		return nil, response.ErrInternal(50010, "query_failed", "failed to list question versions")
-	}
-	defer rows.Close()
-
-	var versions []QuestionVersionResponse
-	for rows.Next() {
-		var v QuestionVersionResponse
-		var ca interface{}
-		if err := rows.Scan(&v.ID, &v.QuestionID, &v.QuestionText, &v.QuestionHash, &v.VersionNo, &v.IsActive, &ca); err != nil {
-			return nil, response.ErrInternal(50010, "scan_failed", err.Error())
-		}
-		v.CreatedAt = fmt.Sprintf("%v", ca)
-		versions = append(versions, v)
-	}
-	if versions == nil {
-		versions = []QuestionVersionResponse{}
-	}
-	return versions, nil
-}
-
 // --- Competitor CRUD ---
 
 type CompetitorRequest struct {