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/repository/template_repo.go

@@ -14,7 +14,6 @@ type TemplateRecord struct {
 	OriginType              string
 	TemplateKey             string
 	TemplateName            string
-	SchemaJSON              []byte
 	PromptTemplate          *string
 	PromptVisibility        string
 	ProtectedPromptAssetKey *string
@@ -25,16 +24,9 @@ type TemplateRecord struct {
 	UpdatedAt               time.Time
 }
 
-type TemplateSchemaRecord struct {
-	ID           int64
-	TemplateName string
-	SchemaJSON   []byte
-}
-
 type TemplateRepository interface {
 	ListTemplates(ctx context.Context, tenantID int64) ([]TemplateRecord, error)
 	GetTemplateByID(ctx context.Context, id, tenantID int64) (*TemplateRecord, error)
-	GetTemplateSchema(ctx context.Context, id int64) (*TemplateSchemaRecord, error)
 }
 
 type templateRepository struct {
@@ -60,7 +52,6 @@ func (r *templateRepository) ListTemplates(ctx context.Context, tenantID int64)
 			OriginType:       row.OriginType,
 			TemplateKey:      row.TemplateKey,
 			TemplateName:     row.TemplateName,
-			SchemaJSON:       row.SchemaJson,
 			PromptTemplate:   nullableText(row.PromptTemplate),
 			PromptVisibility: row.PromptVisibility,
 			CardConfigJSON:   row.CardConfigJson,
@@ -90,7 +81,6 @@ func (r *templateRepository) GetTemplateByID(ctx context.Context, id, tenantID i
 		OriginType:              row.OriginType,
 		TemplateKey:             row.TemplateKey,
 		TemplateName:            row.TemplateName,
-		SchemaJSON:              row.SchemaJson,
 		PromptTemplate:          nullableText(row.PromptTemplate),
 		PromptVisibility:        row.PromptVisibility,
 		ProtectedPromptAssetKey: nullableText(row.ProtectedPromptAssetKey),
@@ -101,16 +91,3 @@ func (r *templateRepository) GetTemplateByID(ctx context.Context, id, tenantID i
 		UpdatedAt:               timeFromTimestamp(row.UpdatedAt),
 	}, nil
 }
-
-func (r *templateRepository) GetTemplateSchema(ctx context.Context, id int64) (*TemplateSchemaRecord, error) {
-	row, err := r.q.GetTemplateSchema(ctx, id)
-	if err != nil {
-		return nil, err
-	}
-
-	return &TemplateSchemaRecord{
-		ID:           row.ID,
-		TemplateName: row.TemplateName,
-		SchemaJSON:   row.SchemaJson,
-	}, nil
-}