Fix static file serving for favicon and other dist root files

backend/app/main.py

@@ -88,6 +88,11 @@ if os.path.exists(static_dir):
 
             raise HTTPException(status_code=404, detail="Not found")
 
+        # Check if requesting a static file from dist root (favicon, etc.)
+        static_file_path = os.path.join(static_dir, full_path)
+        if os.path.isfile(static_file_path) and not full_path.startswith("."):
+            return FileResponse(static_file_path)
+
         # Serve SPA for all other routes (including /project/*)
         index_path = os.path.join(static_dir, "index.html")
         if os.path.exists(index_path):