Integrates tauri-plugin-updater and tauri-plugin-process to enable
ClawPal self-updates. The Home page now checks for app updates and
shows a download progress bar with an "Update & Restart" button.
CI workflow wired to sign release artifacts with TAURI_SIGNING_PRIVATE_KEY.
Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)
Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>
