fix UI

app.py

@@ -2,23 +2,24 @@ import logging
 import gradio as gr
 from fastapi import FastAPI, Request
 from rag_core import business
+import threading
 import uvicorn
 
 logging.basicConfig(level=logging.INFO, format="%(asctime)s [%(levelname)s] %(message)s")
 
-app = FastAPI()
+# FastAPI dùng cho API nếu cần gọi từ backend hoặc automation
+api_app = FastAPI()
 
-# --- API Routes ---
-@app.post("/ask")
+@api_app.post("/ask")
 async def ask_api(req: Request):
     data = await req.json()
     return business.answer_query(data.get("query"))
 
-@app.post("/rescan")
+@api_app.post("/rescan")
 async def rescan_api():
     return business.rescan_index()
 
-# --- Gradio UI logic ---
+# Gradio UI
 def answer_fn(query):
     result = business.answer_query(query)
     return result.get("answer", result.get("error", "Lỗi không xác định."))
@@ -34,10 +35,11 @@ with gr.Blocks() as iface:
     query_box.submit(fn=answer_fn, inputs=query_box, outputs=output_box)
     build_btn.click(fn=build_index_ui, outputs=[build_btn, query_box, output_box])
 
-# Mount Gradio vào ROOT path "/"
-app = gr.mount_gradio_app(app, iface, path="/")
+# Chạy FastAPI trong thread phụ (nếu cần gọi /ask /rescan qua HTTP)
+def start_fastapi():
+    uvicorn.run(api_app, host="0.0.0.0", port=7861)
 
-# Chạy server khi standalone
-if __name__ == "__main__":
-    logging.info("🚀 Khởi chạy FastAPI + Gradio tại cổng 7860")
-    uvicorn.run(app, host="0.0.0.0", port=7860)
+threading.Thread(target=start_fastapi).start()
+
+# 🚀 Gradio chạy là app chính (bắt buộc với Hugging Face)
+iface.launch(server_name="0.0.0.0", server_port=7860)