description: Test infra + writing/running for Time Machine — vitest (server schemas + client dates/components), the create-db→boot→exercise→truncate smoke pattern. Distinguishes flaky from real.
and component behaviour via `@testing-library/react`: add / toggle / delete / rollover, and
optimistic-update rollback with a mocked `lib/api`.
## Full-stack smoke (when correctness spans the DB)
Follow `docs/SETUP.md`: create the DB → spawn `dist/index.js` against it → drive the API with a
cookie jar (remember cookie-session sets **two** cookies — capture both via `getSetCookie()`) →
assert → **TRUNCATE cleanup**. Never leave rows in the real DB; never point a destructive test
at another database on the shared server.
## Discipline
Write the minimum meaningful test, run it, and separate real failures from flakes (re-run,
inspect). Hand regressions to `/engineer` or `/dba`. Propose new infra before bootstrapping it.
End with `## Next`.
## Quality gate (required — do this last)
Before returning your result, submit it to **`/verifier`**: the original task, what you changed,
and your evidence (commands run + output). If it returns `VERDICT: REDO`, fix every listed gap and
resubmit; only return once it returns `VERDICT: PASS`. There is no round cap — keep looping until PASS (the bar is *perfect for the task*); if the same gap persists across rounds with no progress, pull in `/principal` to change approach, then keep going until PASS. Never skip this (`/verifier` itself is exempt, to avoid recursion).
