improve: simplify tocken use

modules/ai_model.py

@@ -40,6 +40,7 @@ class AIModel:
         cache_dir = "/app/.cache/huggingface"
         login(token=token_to_use, add_to_git_credential=False)
         log.info("✅ HuggingFace 认证成功")
+        return token_to_use