The link table keyed by the trip id made both entities a one-to-one, and the
test typecheck failed with TS2589 in the itinerary factory. It now holds its
own id with trip_id UNIQUE, as trip_invite_tokens does, and its members hang
off link_id.
The factory error was not this table's alone: any further relation on trips,
journeys or users tipped the same check. insertRow and createRow now take a
caller's overrides as their own argument instead of a spread checked against
RequiredEntityData, so a new relation no longer breaks the itinerary and tour
factories.
The suites that hand-build TripMembersService get a journalLinksStub.
Maurice
89f3055a29