self-update

Version update menu for the DeepSeek Harness Web GUI settings panel: check @deepseek-ai/dsh releases, install one with a click, then restart the host and reload the page automatically.

In-app self-update for DeepSeek Harness git-source installs + optional native macOS shell

Check upstream manually or every six hours, use a narrowly scoped agent for compatibility work, and switch atomically with rollback.