Fix Gradio Progress parameter causing TypeError

- Changed progress parameter from gr.Progress() default to None
- Added conditional checks before calling progress methods
- Added show_progress=True to button click handler
- Resolves schema type error during API info generation

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

app.py

@@ -85,7 +85,7 @@ def create_token_preview(tokens):
     return html
 
 
-def process_screenshot(image, output_format, progress=gr.Progress()):
+def process_screenshot(image, output_format, progress=None):
     """Process uploaded screenshot and extract design tokens"""
     if image is None:
         return None, "Please upload a screenshot", None
@@ -94,7 +94,8 @@ def process_screenshot(image, output_format, progress=gr.Progress()):
     generator = TokenCodeGenerator()
     
     try:
-        progress(0.1, desc="Initializing extraction...")
+        if progress:
+            progress(0.1, desc="Initializing extraction...")
         
         # Resize image if needed
         image = extractor.resize_for_processing(image)
@@ -104,16 +105,20 @@ def process_screenshot(image, output_format, progress=gr.Progress()):
             temp_path = tmp.name
             image.save(temp_path)
         
-        progress(0.3, desc="Extracting colors...")
+        if progress:
+            progress(0.3, desc="Extracting colors...")
         colors = extractor.extract_colors(temp_path)
         
-        progress(0.5, desc="Detecting spacing...")
+        if progress:
+            progress(0.5, desc="Detecting spacing...")
         spacing = extractor.detect_spacing(image)
         
-        progress(0.6, desc="Analyzing typography...")
+        if progress:
+            progress(0.6, desc="Analyzing typography...")
         typography = extractor.detect_typography(image)
         
-        progress(0.7, desc="Analyzing components...")
+        if progress:
+            progress(0.7, desc="Analyzing components...")
         components = extractor.analyze_components(image)
         
         # Combine all tokens
@@ -124,7 +129,8 @@ def process_screenshot(image, output_format, progress=gr.Progress()):
             "components": components
         }
         
-        progress(0.8, desc="Generating code...")
+        if progress:
+            progress(0.8, desc="Generating code...")
         
         # Generate output based on selected format
         if output_format == "CSS Variables":
@@ -157,7 +163,8 @@ def process_screenshot(image, output_format, progress=gr.Progress()):
         except:
             pass
         
-        progress(1.0, desc="Complete!")
+        if progress:
+            progress(1.0, desc="Complete!")
         
         # Create preview visualization
         preview_html = create_token_preview(tokens)
@@ -266,7 +273,8 @@ def create_gradio_app():
         extract_btn.click(
             fn=process_screenshot,
             inputs=[input_image, output_format],
-            outputs=[preview, code_output, download_file]
+            outputs=[preview, code_output, download_file],
+            show_progress=True
         )
         
         # Add footer