Restrict CORS to specific frontend domain

Updated CORS settings to allow requests from the specified frontend domain.

app.py

@@ -19,7 +19,7 @@ app = FastAPI(
 # Enable CORS (Allows your frontend to talk to this API)
 app.add_middleware(
     CORSMiddleware,
-    allow_origins=["*"],  # In production, replace with specific domain
+    allow_origins=["https://aether-match.vercel.app"],  # In production, replace with specific domain
     allow_credentials=True,
     allow_methods=["*"],
     allow_headers=["*"],
@@ -174,4 +174,4 @@ def trigger_update(background_tasks: BackgroundTasks):
 
 # --- Entry Point ---
 if __name__ == "__main__":
-    uvicorn.run(app, host="0.0.0.0", port=8000)
+    uvicorn.run(app, host="0.0.0.0", port=8000)