CedarCopilot/cedar-mail

Branch: staging

fix(tasks): remove the 'reminder' task type instead of migrating it in

merged#2822CedarCopilot

CedarCopilot wants to merge 2 commits into staging from fix/remove-reminder-task-type

What Libra verified

Reminder is no longer an available task type
Libra ran this behavior against the change and confirmed the check detects when it breaks.
Technical evidence
- the canonical task type definitions and persisted constraint expose only supported values without reminder
- agent-facing task type guidance and creation input reject reminder while accepting each remaining supported task type
Changed code: aop-schema.ts.