Matt 75c8829c3f feat(db): add User.mentorOnboardingSentAt for one-shot onboarding email (§D) ...

Single nullable DateTime column. No backfill. Catalog-only ALTER TABLE —
sub-millisecond on PostgreSQL regardless of table size. The column is
unused until the bulk role-update flow wires it up as an idempotency
stamp for the mentor-onboarding email.

Plan: docs/superpowers/plans/2026-04-28-pr6-multi-role-and-workspace-previews.md
Spec: docs/superpowers/specs/2026-04-28-mentor-round-readiness-design.md §D

2026-04-28 15:57:09 +02:00

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