chore: 更新 user-agent 版本为 0.40.2

- user-agent-updater.js 默认值
- config.json 配置值

config.json

@@ -92,6 +92,6 @@
     }
   ],
   "dev_mode": true,
-  "user_agent": "factory-cli/0.27.1",
+  "user_agent": "factory-cli/0.40.2",
   "system_prompt": "You are Droid, an AI software engineering agent built by Factory.\n\n"
 }