fixed sesskey

main.py

@@ -1,31 +1,42 @@
 import os
+import secrets
+from dotenv import load_dotenv
 from fastapi import FastAPI, HTTPException, Request
-from sse_starlette.sse import EventSourceResponse
 from fastapi.staticfiles import StaticFiles
+from sse_starlette.sse import EventSourceResponse
 from openai import AsyncOpenAI
-from fasthtml.common import FastHTML, Html, Head, Title, Body, Div, Button, Textarea, Script, Style, P, Favicon, ft_hx
+from fasthtml.common import (
+    FastHTML, Html, Head, Title, Body, Div, Button, Textarea,
+    Script, Style, P, Favicon, ft_hx
+)
 from styles import styles
 from script import script
 from fasthtml_hf import setup_hf_backup
-from dotenv import load_dotenv
 import bleach
 
-load_dotenv(override=True)
+load_dotenv()
 
-secret_key = os.getenv("SECRET_KEY")
-hf_token = os.getenv("HF_TOKEN")
+def get_or_create_secret_key(file_path=".sesskey"):
+    if os.path.exists(file_path):
+        with open(file_path, "r") as f:
+            return f.read().strip()
+    key = secrets.token_urlsafe(32)
+    with open(file_path, "w") as f:
+        f.write(key)
+    return key
 
-app = FastHTML(secret_key=secret_key)
+secret_key = get_or_create_secret_key()
 
+app = FastHTML(secret_key=secret_key)
 app.mount("/static", StaticFiles(directory="static"), name="static")
-
-setup_hf_backup(app, token=hf_token)
+setup_hf_backup(app)
 
 client = AsyncOpenAI()
-
 conversations = {}
 
-ALLOWED_TAGS = list(bleach.sanitizer.ALLOWED_TAGS) + ["h1", "h2", "h3", "p", "strong", "em", "ul", "ol", "li", "code", "pre", "blockquote"]
+ALLOWED_TAGS = list(bleach.sanitizer.ALLOWED_TAGS) + [
+    "h1", "h2", "h3", "p", "strong", "em", "ul", "ol", "li", "code", "pre", "blockquote"
+]
 ALLOWED_ATTRIBUTES = bleach.sanitizer.ALLOWED_ATTRIBUTES
 
 static_dir = os.path.join(os.path.dirname(__file__), "static")
@@ -43,7 +54,6 @@ def home():
     home_text = """
 ## FastGPT - A ChatGPT Implementation Using FastHTML
     """
-
     page = Html(
         Head(
             Title("FastGPT"),