Update app.py

app.py

@@ -1 +1,26 @@
-import fast
+"""
+Entry point for the Lin application on Hugging Face Spaces.
+This file imports and runs the backend Flask application directly.
+"""
+import os
+import sys
+
+if __name__ == '__main__':
+    # Set the port for Hugging Face Spaces
+    port = os.environ.get('PORT', '7860')
+    os.environ.setdefault('PORT', port)
+    
+    print(f"Starting Lin application on port {port}...")
+    
+    try:
+        # Import and run the backend Flask app directly
+        from backend.app import create_app
+        app = create_app()
+        app.run(
+            host='0.0.0.0',
+            port=int(port),
+            debug=False
+        )
+    except Exception as e:
+        print(f"Failed to start Lin application: {e}")
+        sys.exit(1)