startServer picks Postgres when DATABASE_URL is set, SQLite file otherwise.
New pg-engine.test.ts (opt-in via HQ_PG_TEST_URL, wipes its target schema):
migrations from zero, invoice issue with series numbering + due-date stamp,
paisa-exact payment to paid, exactly-once reminder upsert via ON CONFLICT,
savepoint-nested rollback (incl. the mixed dbPassword+patch write), and a
full HTTP boot smoke (health/login/clients) on the postgres engine.
Verified locally against PostgreSQL 17: 5/5. Default suite (sqlite)
346/346, typecheck clean.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Thomas Joise