Task 8b-2 item 4: the three credential columns the 3h Task 7 review flagged
as having no at-rest pin — users.airtrail_api_key (AirtrailService#saveSettings),
document_connections.secrets (DocSyncConfigService's whole-secret-map
column), and trip_document_links.webhook_secret (createLink's per-binding
mint). Each test saves through the real service, reads the raw column via
better-sqlite3, asserts it is enc:v1:-prefixed ciphertext that never
contains the plaintext, and asserts the service's own decrypt path rounds
it back to the original value.
jubnl
6965869dda