Fix SECRET_TOKEN env var loading to match HF settings

app.py

@@ -18,7 +18,7 @@ API_ID = int(os.getenv("TELEGRAM_API_ID") or os.getenv("API_ID") or "0")
 API_HASH = os.getenv("TELEGRAM_API_HASH") or os.getenv("API_HASH") or ""
 BOT_TOKEN = os.getenv("TELEGRAM_BOT_TOKEN", "")
 CHAT_ID = int(os.getenv("TELEGRAM_CHAT_ID", "0"))
-SECRET_TOKEN = os.getenv("HF_SECRET", "")
+SECRET_TOKEN = os.getenv("SECRET_TOKEN") or os.getenv("HF_SECRET") or ""
 EXTERNAL_API_URL = os.getenv("EXTERNAL_API_URL", "https://shrutibots.site")
 
 # Initialize Pyrogram Client