Update app.py

app.py

@@ -19,6 +19,11 @@ print("Loading Whisper model...")
 model = WhisperModel("large-v3", device="cpu", compute_type="int8")
 print("Whisper model ready!")
 
+# ─── Root ─────────────────────────────────────────────────────────────────────
+@app.get("/")
+async def root():
+    return {"message": "SubFlow backend is online and ready!"}
+
 # ─── Health ───────────────────────────────────────────────────────────────────
 @app.get("/health")
 async def health():