[Bug]:copaw版本0.2.0 windows11环境启动报错：ERROR lib\site-packages\copaw\cli\desktop_cmd.py:249 | 2026-03-30 23:03:44 | Backend process exited unexpectedly with code 120

✅ CoPaw 版本 / Version 0.2.0
✅ 操作系统 / windows 11
✅ 复现步骤 / 打开CoPaw Desktop (Debug).bat，卡在如下信息不动，然后报错： INFO lib\site-packages\copaw\app\workspace\service_factories.py:57 | 2026-04-01 09:50:38 | ChatManager created: C:\Users\61089\.copaw\workspaces\default\chats.json

DEBUG lib\site-packages\copaw\app\workspace\service_manager.py:319 | 2026-03-30 22:58:51 | Service 'memory_manager' started for default
DEBUG lib\site-packages\copaw\app\workspace\service_manager.py:247 | 2026-03-30 22:58:51 | Creating service 'mcp_manager'...
DEBUG lib\site-packages\copaw\app\mcp\manager.py:45 | 2026-03-30 22:58:51 | Initializing MCP clients from config
DEBUG lib\site-packages\copaw\app\mcp\manager.py:48 | 2026-03-30 22:58:51 | MCP client 'tavily_search' is disabled, skipping
DEBUG lib\site-packages\copaw\app\workspace\service_manager.py:247 | 2026-03-30 22:58:51 | Creating service 'chat_manager'...
INFO lib\site-packages\copaw\app\runner\manager.py:38 | 2026-03-30 22:58:51 | ChatManager created with repo path: C:\Users\61089\.copaw\workspaces\default\chats.json
INFO lib\site-packages\copaw\app\workspace\service_factories.py:57 | 2026-03-30 22:58:51 | ChatManager created: C:\Users\61089\.copaw\workspaces\default\chats.json
ERROR lib\site-packages\copaw\cli\desktop_cmd.py:191 | 2026-03-30 23:03:44 | Server did not become ready in time.
Server did not become ready in time; open manually: http://127.0.0.1:51030
INFO lib\site-packages\copaw\cli\desktop_cmd.py:238 | 2026-03-30 23:03:44 | Backend already exited with code 120
ERROR lib\site-packages\copaw\cli\desktop_cmd.py:249 | 2026-03-30 23:03:44 | Backend process exited unexpectedly with code 120

Start with copaw/cli/desktop_cmd.py around lines 191, 238, and 249, then reproduce the launch using CoPaw Desktop (Debug).bat on Windows 11. Trace why the backend exits with code 120 before becoming ready; done means the desktop backend starts successfully without the reported timeout.

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