Six routes move from `requireAuth()` to `requireRecordAuth("read")`: the
measurement list, the single reading, the two series reads, and the two
reminder reads. Each is admitted in the delegable classification with its
five answers written; each enters the frozen list with the argument for why
a delegate reading through it cannot extend their own reach.
Only the GET arms move. The POST, PUT and DELETE arms in the same files keep
`requireAuth()`, which refuses outright while a switch is active, so a file
entering the list admits a read and nothing else.
The two validation breadcrumbs on the list and series reads now write through
`auditLog()` rather than a bare `prisma.auditLog.create`. That helper is the
only writer that stamps `actorUserId`, and without the stamp a delegate's
malformed query lands on the owner's record looking like the owner's own.
Integration coverage drives the shipped GET exports against real Postgres:
the owner's rows reach a delegate holding a live grant, the delegate's own
rows do not, a caller without a grant is refused `sharing.access.denied`, the
request after a revocation is refused with no re-login, and a caller who
never switched sees exactly what they saw before.
Marc-André Bombeck
255cbf5fe0