## Summary
- **Fix:** `integration-requests:review` crashed with `Attempt to read
property "email" on null` when a request's author no longer exists. The
command now renders a dash instead of assuming the `user` relation is
present.
- **Feature:** new terminal `done` status that marks an integration
request as shipped.
## The `done` status
Modeled after `not_doable` (a frozen, terminal state):
- Shown on the board, sinking to the bottom regardless of votes.
- Can no longer be voted on or unvoted (`removeVote` returns 404).
- Drops its public comment when set, so the board shows no stale note.
- Available in both `integration-requests:review` flows (pending review
and `--all`).
Frontend gets a `Done` badge and an `isFrozen()` helper that replaces
the scattered `=== 'not_doable'` checks gating the vote/unvote buttons.
## Tests
- 6 new feature tests: visibility without comment, bottom ordering,
vote/unvote blocked, command sets `done` and clears the comment, and the
command tolerating an orphaned author.
- `php artisan test tests/Feature/IntegrationRequestTest.php` → 34
passed.
- Board vitest suite, Pint, ESLint and Prettier all green.
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