Playwright runs the server via `react-router serve` with
NODE_ENV=production but against a local dev Postgres and local cookie
secrets. The guards added in 5a7bb76 refused to start under that
configuration. `E2E=true` (already set by the CI E2E job) is now the
explicit opt-out: in real production this env var is never set, so the
guard still bites.
ebedfa257b