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"
 }

user-agent-updater.js

@@ -13,9 +13,9 @@ let isUpdating = false;
 
 function getDefaultVersion() {
   const cfg = getConfig();
-  const userAgent = cfg.user_agent || 'factory-cli/0.19.3';
+  const userAgent = cfg.user_agent || 'factory-cli/0.40.2';
   const match = userAgent.match(/\/(\d+\.\d+\.\d+)/);
-  return match ? match[1] : '0.19.3';
+  return match ? match[1] : '0.40.2';
 }
 
 function initializeVersion() {