Update app.py

app.py

@@ -290,7 +290,7 @@ app = FastAPI(
 # ------------------------- API Endpoints -------------------------
 @app.get("/health", summary="Health Check", tags=["System"])
 async def health_check() -> Dict[str, str]:
-    return {"status": "ok", "device": DEVICE, "sample_rate": SAMPLE_RATE}
+    return {"status": "ok", "device": DEVICE, "sample_rate": str(SAMPLE_RATE)}  # Convert to string
 
 @app.get("/languages", summary="List Supported Languages", tags=["Metadata"])
 async def get_languages() -> Dict[str, Any]: