SettingsRepository (getForUser/upsertForUser/getOne/deleteForUser) replaces
the per-user settings table's raw SQL; SettingsService drops DatabaseService
entirely. instance-api-keys.ts's readInstanceApiKey/writeInstanceApiKey/
resolveApiKey take an explicit AppSettingsRepository/UsersRepository instead
of a raw connection.
An earlier version resolved those two repositories itself from the active
MikroORM request context, so none of its six callers needed to change. That
worked in production and e2e (always inside a real request) but broke
service construction in plain unit tests across every calling domain
(addons, auth x2, maps, transit, unsplash - 185 failures on a full run),
since none of them wrap a request context. Each of those six services now
injects its own AppSettingsRepository/UsersRepository and passes them
through explicitly, matching how every other converted repository in this
migration is consumed; their own SQL is untouched (outside Plan 3a).
jubnl