Existing coverage was one integration test and zero e2e tests. Adds the thin,
high-value integration/e2e layer unit tests can't reach (real Postgres wire
contract, real browser flows) and wires it as a post-deploy smoke gate.
- Seed a deterministic dev/QA admin user and fixed Development env key so
HTTP-only tests can authenticate without per-run registration.
- Expand the API integration suite: disabled-flag, unauthorized access,
environment-document bootstrap, identity-override precedence, and auth
login scenarios, reusing the existing black-box HTTP+Npgsql harness.
- Add a Playwright suite for the admin SPA: login, nav, project/environment
context selection, and feature create/toggle, against the real API.
- Bind QA Postgres to 127.0.0.1 for direct seeding, add smoke-qa.sh and an
ensure_node() bootstrap (the qa runner has no Node today), and wire a new
smoke-qa CI job after deploy-qa.
