- Remove delete_undo_enabled setting (backend default, frontend state,
settings modal UI, 10 locales); staged deletes with 30s undo are now
the only delete path and stale settings keys are silently ignored
- Remove the 1500ms delete-button arm delay (armDeleteButton) from all
delete modals; misclicks are recoverable via the undo toast
- Delete modal always shows the recoverable warning
- Log the first staged file path in staging log lines for easier support