Add a context-menu action to delete all branches in a folder at once.
Top-level remote folders are protected and the currently checked-out branch
is preserved. The BranchPanel API now includes folder depth to prevent
accidental bulk-deletes and summarizes individual failures after processing.
UI polish and localization were applied, and the package/version metadata,
changelog, and help overlay were updated for the 2026.8.4 release.
- Bulk delete with top-level remote protection and failure summaries.
- BranchPanel now tracks folder depth and disables unsafe context menus.
- Version bump, changelog/help overlay updates, and UI/localization tweaks.