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Goal: toast notifications that announce updates without stealing focus, and don’t disappear before someone can act.
Keyboard: Tab/Shift+Tab, H hint, N new scenario, U undo last (AFTER).
Toast notifications — spot the change (demo)
Compare BEFORE vs AFTER. Try deleting an item and see what changes.
Scenario: Inbox cleanup
Read the checklist (article)
BEFORE — steals focus + fragile timer
Problem pattern: focus jumps to toast; undo is “clicky text”; toast may vanish mid-action.
Inbox
3 messages
AFTER — live region + no focus steal + actionable
Polite announcement; undo is a real button; timer can be paused.
Inbox
3 messages

Hint: watch what happens to keyboard focus, and whether you can reliably undo.