Reminds the user of commitments they already know — meetings, deadlines, bills, promises, follow-ups — at the right lead time, in their style. Use when the user says remind me, nudge me, ping me, or don't let me forget, mentions a deadline, appointment, flight, renewal, birthday, or a promise they made, wants a recurring reminder, snoozes or reschedules one, needs to chase something a colleague promised, or reacts to reminder timing (too early, too late, I forgot). Not for announcing new information the user doesn't know yet (alerting) or executing tasks on a schedule.
Clearer data layout: what to read, what to save, and where