refactor: Update credential synchronization to async Gitea fetch and simplify root HTML serving.

main.py

@@ -10,7 +10,7 @@ from fastapi.templating import Jinja2Templates
 from dotenv import load_dotenv
 from starlette.concurrency import run_in_threadpool
 
-from ai_agent import query_agent
+from ai_agent import query_agent_async
 from config import get_config, save_config
 from credential_manager import fetch_from_gitea_repo_async
 from orchestrator import (
@@ -58,7 +58,7 @@ async def get_system_status(is_auth: bool = Depends(verify_password)):
 async def web_chat(message: dict, is_auth: bool = Depends(verify_password)):
     user_text = message.get("text", "")
     if not user_text: return {"reply": "Vazio."}
-    reply = query_agent(user_text)
+    reply = await query_agent_async(user_text)
     return {"reply": reply}
 
 @app.post("/api/orchestrate")