🔧 Add debugging and error handling for Gradio startup

- Enhanced start_app.sh with detailed logging and process tracking
- Added comprehensive error handling to gradio_app.py launch
- Include file listing and directory checks for troubleshooting
- Added timing delays between backend and frontend startup
- Better error reporting with full tracebacks for debugging

src/gradio_app.py

@@ -475,10 +475,26 @@ def create_medivision_app():
 
 # Create and launch the app
 if __name__ == "__main__":
-    app = create_medivision_app()
-    app.launch(
-        server_name="0.0.0.0",
-        server_port=7860,
-        share=True,
-        show_api=False
-    )
+    print("🚀 Initializing MediVision Gradio App...")
+    try:
+        print("📝 Creating Gradio interface...")
+        app = create_medivision_app()
+        print("✅ Gradio interface created successfully!")
+        
+        print("🌐 Launching Gradio app...")
+        print(f"🔗 Server: 0.0.0.0:7860")
+        print(f"🔗 Share: True")
+        
+        app.launch(
+            server_name="0.0.0.0",
+            server_port=7860,
+            share=True,
+            show_api=False
+        )
+        
+    except Exception as e:
+        print(f"❌ Error launching Gradio app: {str(e)}")
+        import traceback
+        print(f"📋 Full traceback:")
+        traceback.print_exc()
+        raise

src/start_app.sh

@@ -1,19 +1,41 @@
 #!/bin/bash
 
+echo "===== Application Startup at $(date) ====="
+echo ""
 echo "🔬 MediVision - AI-Powered Radiology Report System"
 echo "=================================================="
 
+# Check current directory and list files
+echo "📂 Current directory: $(pwd)"
+echo "📁 Available files:"
+ls -la /app/
+
 # Check if argument provided
 if [ "$1" = "streamlit" ]; then
     echo "🌐 Starting with Streamlit..."
     cd /app/backend && uvicorn service:app --host 0.0.0.0 --port 8001 &
+    BACKEND_PID=$!
+    echo "🔧 Backend started with PID: $BACKEND_PID"
+    sleep 2
     cd /app && streamlit run streamlit_app.py --server.port 8501 --server.address 0.0.0.0 --server.enableXsrfProtection=false
 elif [ "$1" = "gradio" ]; then
     echo "🌐 Starting with Gradio..."
     cd /app/backend && uvicorn service:app --host 0.0.0.0 --port 8001 &
+    BACKEND_PID=$!
+    echo "🔧 Backend started with PID: $BACKEND_PID"
+    sleep 3
+    echo "🚀 Starting Gradio frontend..."
     cd /app && python gradio_app.py
 else
     echo "🌐 Starting with Gradio (default)..."
     cd /app/backend && uvicorn service:app --host 0.0.0.0 --port 8001 &
-    cd /app && python gradio_app.py
+    BACKEND_PID=$!
+    echo "🔧 Backend started with PID: $BACKEND_PID"
+    sleep 3
+    echo "🚀 Starting Gradio frontend..."
+    cd /app
+    echo "📍 About to run: python gradio_app.py"
+    echo "📁 Files in current directory:"
+    ls -la
+    python gradio_app.py
 fi