Archive/delete now flash a red cross then drop tiles from the grid
immediately, instead of a green check that lingered until the slow
server-reconcile refetch landed. Keyboard `x` archive previously never
called markRemoved, so tiles only vanished on refetch — that lag is gone.
- Add 'removed' bulk state + removedBulk() helper (red cross overlay)
- gridKeyNav archive/delete: removedBulk -> 500ms flash -> markRemoved,
clearRemoved once refetch settles; restore stays green check
- BulkActionBar: BulkConfig.removing routes archive/delete through the
red flash; approve/restore/label/note unchanged
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
