feat: Refactor template handling and brand management

- Removed schema_json from article templates and related queries.
- Updated brand service to include website field in requests and responses.
- Simplified template wizard view by eliminating unused schema fields and related logic.
- Added tests for ark text format handling.
- Created migrations for dropping schema_json and adding website to brands.

server/internal/tenant/app/template_service.go

@@ -93,7 +93,6 @@ type TemplateListItem struct {
 	OriginType       string                 `json:"origin_type"`
 	TemplateKey      string                 `json:"template_key"`
 	TemplateName     string                 `json:"template_name"`
-	SchemaJSON       map[string]interface{} `json:"schema_json"`
 	PromptVisibility string                 `json:"prompt_visibility"`
 	CardConfigJSON   map[string]interface{} `json:"card_config"`
 	Status           string                 `json:"status"`
@@ -122,7 +121,6 @@ func (s *TemplateService) List(ctx context.Context) ([]TemplateListItem, error)
 			VersionNo:        row.VersionNo,
 			CreatedAt:        row.CreatedAt,
 		}
-		_ = json.Unmarshal(row.SchemaJSON, &item.SchemaJSON)
 		_ = json.Unmarshal(row.CardConfigJSON, &item.CardConfigJSON)
 		items = append(items, item)
 	}
@@ -142,7 +140,7 @@ func (s *TemplateService) Detail(ctx context.Context, id int64) (*TemplateDetail
 		return nil, response.ErrNotFound(40410, "template_not_found", "template not found")
 	}
 
-	detail := &TemplateDetail{
+		detail := &TemplateDetail{
 		TemplateListItem: TemplateListItem{
 			ID:               record.ID,
 			Scope:            record.Scope,
@@ -156,7 +154,6 @@ func (s *TemplateService) Detail(ctx context.Context, id int64) (*TemplateDetail
 			CreatedAt:        record.CreatedAt,
 		},
 	}
-	_ = json.Unmarshal(record.SchemaJSON, &detail.SchemaJSON)
 	_ = json.Unmarshal(record.CardConfigJSON, &detail.CardConfigJSON)
 
 	if canViewPromptTemplate(record, actor.TenantID) {
@@ -166,18 +163,6 @@ func (s *TemplateService) Detail(ctx context.Context, id int64) (*TemplateDetail
 	return detail, nil
 }
 
-func (s *TemplateService) Schema(ctx context.Context, id int64) (map[string]interface{}, error) {
-	actor := auth.MustActor(ctx)
-	record, err := s.templates.GetTemplateByID(ctx, id, actor.TenantID)
-	if err != nil {
-		return nil, response.ErrNotFound(40410, "template_not_found", "template not found")
-	}
-
-	schema := map[string]interface{}{}
-	_ = json.Unmarshal(record.SchemaJSON, &schema)
-	return schema, nil
-}
-
 func canViewPromptTemplate(record *repository.TemplateRecord, actorTenantID int64) bool {
 	if record == nil || record.TenantID == nil {
 		return false