fix: declare ZeroGPU capability and launch Space

app.py

@@ -1,14 +1,31 @@
+import os
 import sys
 from pathlib import Path
 
 sys.path.insert(0, str(Path(__file__).resolve().parent / "src"))
 
+try:
+    import spaces
+except ImportError:
+    class _Spaces:
+        @staticmethod
+        def GPU(*_args, **_kwargs):
+            return lambda function: function
+
+    spaces = _Spaces()
+
 from compliment_forest.server import create_app
 
-app = create_app()
-demo = app
 
-if __name__ == "__main__":
-    import uvicorn
+@spaces.GPU(duration=1)
+def zerogpu_capability_probe() -> bool:
+    """Declare ZeroGPU compatibility without spending quota in demo mode."""
+    return True
+
+
+app = create_app()
 
-    uvicorn.run(app, host="0.0.0.0", port=7860)
+if os.getenv("SPACE_ID"):
+    app.launch(show_error=True)
+elif __name__ == "__main__":
+    app.launch(server_name="0.0.0.0", server_port=7860)