only app.py for redesigns

backend_deploy.py

@@ -559,6 +559,26 @@ def deploy_to_huggingface_space(
             
             print(f"[Deploy] Generated {len(files)} file(s): {list(files.keys())}")
             
+            # For redesign operations, ONLY update app.py to preserve other helper files
+            # Detect redesign from commit message OR from history (user prompt contains "redesign")
+            is_redesign = False
+            if commit_message and "redesign" in commit_message.lower():
+                is_redesign = True
+            elif history:
+                # Check last user message for "redesign" keyword
+                for role, content in reversed(history):
+                    if role == "user" and content and "redesign" in content.lower():
+                        is_redesign = True
+                        break
+            
+            if is_redesign:
+                print(f"[Deploy] Redesign operation detected - filtering to ONLY app.py")
+                app_py_content = files.get('app.py')
+                if not app_py_content:
+                    return False, "Error: No app.py found in redesign output", None
+                files = {'app.py': app_py_content}
+                print(f"[Deploy] Will only update app.py ({len(app_py_content)} chars)")
+            
             # Upload all generated files (the LLM is instructed to only output .py files,
             # but if it creates new assets/data files, we should upload those too)
             # This approach updates .py files and adds any new files without touching
@@ -1385,14 +1405,27 @@ Generated by [AnyCoder](https://huggingface.co/spaces/akhaliq/anycoder)"""
                         files["app.py"] = cleaned_code
                 
                 # For Gradio PRs, only include .py files (preserve existing requirements.txt, etc.)
+                # For redesigns, ONLY include app.py to avoid modifying helper files
                 if language == "gradio":
                     print(f"[PR] Gradio app - filtering to only .py files")
                     py_files = {fname: content for fname, content in files.items() if fname.endswith('.py')}
                     if not py_files:
                         print(f"[PR] Warning: No .py files found in parsed output")
                         return False, "No Python files found in generated code for Gradio PR", None
-                    files = py_files
-                    print(f"[PR] Will update {len(files)} Python file(s): {list(files.keys())}")
+                    
+                    # Check if this is a redesign (pr_title contains "Redesign")
+                    is_redesign = "redesign" in pr_title.lower() if pr_title else False
+                    
+                    if is_redesign:
+                        print(f"[PR] Redesign PR detected - filtering to ONLY app.py")
+                        if 'app.py' not in py_files:
+                            print(f"[PR] Warning: No app.py found in redesign output")
+                            return False, "No app.py found in redesign output for Gradio PR", None
+                        files = {'app.py': py_files['app.py']}
+                        print(f"[PR] Will only update app.py ({len(py_files['app.py'])} chars)")
+                    else:
+                        files = py_files
+                        print(f"[PR] Will update {len(files)} Python file(s): {list(files.keys())}")
                 
                 # Write files (create subdirectories if needed)
                 for filename, content in files.items():

frontend/src/components/LandingPage.tsx

@@ -385,7 +385,7 @@ Please redesign this with:
 - Modern UI/UX best practices
 - Better visual hierarchy and spacing
 
-${isGradio ? '\n\nIMPORTANT: Only output Python (.py) files. Do NOT include requirements.txt or any other non-Python files. The existing dependencies and configuration files will be preserved.' : ''}`;
+${isGradio ? '\n\nIMPORTANT: Only output app.py with the redesigned UI (themes, layout, styling). Do NOT modify or output any other .py files (utils.py, models.py, etc.). Do NOT include requirements.txt or README.md.' : ''}`;
               
               if (onStart) {
                 // Pass duplicated space ID so auto-deploy updates it
@@ -429,7 +429,7 @@ Please redesign this with:
 - Modern UI/UX best practices
 - Better visual hierarchy and spacing
 
-${isGradio ? '\n\nIMPORTANT: Only output Python (.py) files. Do NOT include requirements.txt or any other non-Python files. The existing dependencies and configuration files will be preserved.' : ''}
+${isGradio ? '\n\nIMPORTANT: Only output app.py with the redesigned UI (themes, layout, styling). Do NOT modify or output any other .py files (utils.py, models.py, etc.). Do NOT include requirements.txt or README.md.' : ''}
 
 Note: After generating the redesign, I will create a Pull Request on the original space.`;