Introduces src/models/admin/, a dedicated identity and permissions module on
its own nachklang_admin database, and the shared authenticator that feedback
and tickets will move onto in the cutover step. Nothing swaps over yet:
feedback.auth.ts and tickets.auth.ts still authenticate against the legacy
calendar sessions, so production behaviour is unchanged.
- better-auth 1.7 mounted at /admin/auth/*, sessions as httpOnly cookies
scoped to .nachklang.art so one sign-in covers every *.nachklang.art app.
- Accounts are invite-only: public sign-up is disabled, and the invitations
plugin is the only code that creates users. Tokens are stored as SHA-256
hashes and travel in the request body, never in a URL.
- Per-app permissions in user_app_permissions; requireAppAccess(app) queries
the database on every request (no cookie cache) so disabling a user or
revoking a session takes effect immediately.
- ADMIN_BOOTSTRAP_EMAIL guarantees a way in on an empty database, idempotently
and without crashing the API if the database is unreachable at boot.
- Guards prevent an admin from removing their own admin permission, disabling
themselves, or stripping the last active admin.
The admin pool uses the callback-style mysql2, not mysql2/promise: Kysely's
MysqlDialect drives the pool with callbacks, and the promise wrapper ignores
them, so every query hangs silently. Only the integration tests caught this.
Schema in sql/admin/001_init.sql, derived from getAuthTables() on the
installed better-auth rather than the published CLI, which lags the library
and omits account.issuer.
app.ts is split into src/app.factory.ts so the integration tests drive the
real middleware order rather than a copy of it.
Tests: 131 unit, plus 41 integration tests against a throwaway MariaDB
started by test/integration/setup.ts (docker or podman).
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Paddy
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