fix the async mess

app.py

@@ -8,7 +8,14 @@ import os
 import logging
 from typing import Annotated
 
-from fastapi import FastAPI, Request, WebSocket, Depends, HTTPException, status
+from fastapi import (
+    FastAPI,
+    Request,
+    WebSocket,
+    Depends,
+    HTTPException,
+    status,
+)
 from fastapi.security import HTTPBasic, HTTPBasicCredentials
 from fastapi.templating import Jinja2Templates
 from fastapi.staticfiles import StaticFiles
@@ -67,7 +74,7 @@ templates = Jinja2Templates(directory=os.path.join(STATIC_DIR, TEMPLATES_DIR))
 
 
 @app.get("/")
-async def home(request: Request, username: Annotated[str, Depends(verify_credentials)]):
+def home(request: Request, username: Annotated[str, Depends(verify_credentials)]):
     """Render the main index page.
 
     Args:
@@ -91,7 +98,7 @@ async def websocket_endpoint(websocket: WebSocket):
     while True:
         data = await websocket.receive_text()
 
-        for chunk in generate(data):
+        async for chunk in generate(data):
             await websocket.send_text(chunk)
 
         await websocket.send_text("<<END>>")