Adds the berth_reservations service covering the full lifecycle
(pending -> active -> ended/cancelled) with tenant scoping, DB-enforced
exclusivity on the idx_br_active partial unique index, and
client-or-company-member cross-checks for yacht ownership.
- validators: createPending / activate / end / cancel / list schemas
- service: createPending, activate, endReservation, cancel, getById,
listReservations — with narrow 23505/idx_br_active catch that
re-queries the conflicting active reservation
- socket events: berth_reservation:{created,activated,ended,cancelled}
- tests: unit (lifecycle, tenant, membership cross-check),
integration (concurrent-activate ConflictError + re-activate after end)
Adds integration test covering:
- idx_yoh_active: only one active ownership row per yacht
- idx_br_active: only one active reservation per berth (non-active rows
are ignored by the partial index)
- Case-insensitive company name uniqueness within a port, with same-name
companies allowed across different ports
Extends tests/helpers/factories.ts with async DB-inserting factories for
ports, clients, berths, yachts (+ ownership history row) and companies.
The new factories use the app's `db` handle so FK and partial unique
indexes are enforced by Postgres. The in-memory data helpers used by
unit tests (makeAuditMeta, makeCreateClientInput, permission helpers)
are preserved.
