fix: move @clear_cache below @handle_permission to avoid cache invalidation on 403

Decorator order is now: @api_view → @handle_http_request → @handle_permission → @clear_cache
Cache is only cleared when the request passes permission checks.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: abhizipstack

backend/backend/core/routers/transformation/views.py

@@ -35,9 +35,9 @@ def save_model_file(request: Request, project_id: str, file_name: str) -> Respon
 
 
 @api_view([HTTPMethods.POST])
-@clear_cache(patterns=["model_content_{project_id}_*"])
 @handle_http_request
 @handle_permission
+@clear_cache(patterns=["model_content_{project_id}_*"])
 def set_model_config_and_reference(
     request: Request, project_id: str, file_name: str
 ) -> Response:
@@ -102,9 +102,9 @@ def set_model_config_and_reference(
 
 
 @api_view([HTTPMethods.POST])
-@clear_cache(patterns=["model_content_{project_id}_*"])
 @handle_http_request
 @handle_permission
+@clear_cache(patterns=["model_content_{project_id}_*"])
 def set_model_transformation(
     request: Request, project_id: str, file_name: str
 ) -> Response:
@@ -120,9 +120,9 @@ def set_model_transformation(
 
 
 @api_view([HTTPMethods.DELETE])
-@clear_cache(patterns=["model_content_{project_id}_*"])
 @handle_http_request
 @handle_permission
+@clear_cache(patterns=["model_content_{project_id}_*"])
 def delete_model_transformation(
     request: Request, project_id: str, file_name: str
 ) -> Response:
@@ -142,9 +142,9 @@ def delete_model_transformation(
 
 
 @api_view([HTTPMethods.POST])
-@clear_cache(patterns=["model_content_{project_id}_*"])
 @handle_http_request
 @handle_permission
+@clear_cache(patterns=["model_content_{project_id}_*"])
 def set_model_presentation(
     request: Request, project_id: str, file_name: str
 ) -> Response: