Bulk selection + bulk actions (demo)

Try selecting items, then activating a bulk action. This version jumps focus to a banner and announces aggressively via aria-live="assertive". It also lacks a mixed (indeterminate) state for “Select all”.

Pattern: selection state stays explicit (checkboxes), “Select all” is tri-state (checked/unchecked/mixed), bulk actions are clearly scoped (“N selected”), and status updates are polite (no focus theft). Tip: press Esc to clear selection.