Owner decisions 2026-10-25: a user connects their OpenID account and signs in with either it or
their password; the admin picks passwords only, OpenID only (admins keep a password way in), or
mixed. No automatic accounts. OIDC sessions re-checked every 15 min with the refresh token;
signing out also signs out at the provider; password sign-ins keep two-step. LDAP is one more way
to check a password. Decision 0004: openid-client and ldapts. Tasks S1-S5.
Owner wanted the first user on 1. Numbering ranges now choose the Next free suggestion
(Settings → Numbering), the setup wizard takes a number per person, and a one-digit number
can't also be a menu key of a digital receptionist with direct dialing. Dialplan patterns that
take an internal number match one digit (_X!); golden case short-numbers proves it in Asterisk.
Migration 0000 enables citext; 0001 creates all 39 tables. DB tests use a
throwaway database per file (TEST_DATABASE_URL, derived from .env in dev,
a postgres service in CI). Decision 0002: pg driver and @fastify/cookie.
Task: M1-T1