- Add POST /api/lm/switch-channel endpoint with git init / ZIP fallback
- Add _backup_git/_restore_git helpers with safe rollback
- Version-info endpoint now returns has_git flag for auto-detection
- Check-updates always returns releases (changelog) regardless of channel
- Nightly mode shows 'N commits behind main' with commit hash and date
- View on GitHub link points to /commits/main in nightly mode
- Channel toggle UI with pill-style buttons in update modal
- Confirmation dialog with Esc / backdrop-dismiss support
- Channel derived from has_git on every page load, no localStorage
- i18n: 11 new keys translated across 9 non-English locales
- CSS: unified card-style sections in _base.css
- Tests: 8 new tests covering switch-channel, nightly response, init_git_repo
- Added new localization keys for usage statistics, collection analysis, storage efficiency, and insights in English and Chinese.
- Updated modal templates to utilize localization for delete, exclude, and bulk delete confirmations.
- Improved download modal with localized labels and placeholders.
- Enhanced example access modal with localized titles and descriptions.
- Updated help modal to include localized content for update vlogs and documentation sections.
- Refactored move modal to use localization for labels and buttons.
- Implemented localization in relink Civitai modal for warnings and help text.
- Updated update modal to reflect localized text for actions and progress messages.
- Enhanced statistics template with localized titles for charts and lists.
- Added "unknown" status to model states in English and Chinese locales.
- Introduced new actions for checking updates and support in both locales.
- Added settings for Civitai API key with help text in both locales.
- Updated context menus and control components to use localized strings.
- Enhanced help and support modals with localization.
- Updated update modal to reflect current and new version information in localized format.
- Refactored various templates to utilize the translation function for better internationalization.
