- 'Marking done' / 'Marking read' / 'Marking unread' label was 2px low
vs. the whirlpool spinner inside the Actions button. The existing
loading-label CSS only scoped to #email-lib-bulk-delete; extend it
to also cover #email-lib-bulk-actions and bump top from 0 to -2px.
- 'All' checkbox label was inline-styled top:2px so the box + text sat
lower than the surrounding bulk-action items. Reset to top:0 to
match memory + skills select-all rows.
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