The per-account preview switch was kept for the topic overview pages,
which were dropped before they shipped. Its one flag was stored, served
and backed up, and read by nothing; the column-reader audit listed it as
a pending consumer that will not come.
Removed completely:
- `/api/settings/preview-features` (GET, PATCH) is retired: it answers
410 Gone with `meta.errorCode: route.retired` and `removedIn: 1.46.0`,
and the contract publishes it under Retired. The route, its validation
schema, the `PreviewFeatures` OpenAPI schemas and the settings module
are deleted.
- Migration 0485 drops `users.preview_features_json` under a bounded lock
wait, with the retry marker.
- The backup no longer writes the field. A file from v1.44 or v1.45 that
carries it still restores: the schema accepts it and no codec reads it,
so nothing is refused or written for it. The backup-parity goldens
lose the field and apply one setting fewer.
- The data-wipe plan entry and the sharing-surface actor entry go with
the route (frozen count 273 -> 272).
No client build reads the route: neither iOS repository nor any local
checkout references it.
Both routes resolved through bare requireAuth, which refuses a session
acting for another record, so the list view controls and the preview
switch failed in exactly the context they are used in. They are the
person's own presentation and now resolve through requireActorAuth,
admitted on the actor-surface list with their reasons.
The layout PUT and the preview PATCH read and write the stored blob
under a row lock in one transaction, so two saves at once no longer
start from the same value and drop each other's change.
Add per-user columns for the labs, illness and checkups list presentation
and for preview-feature opt-ins, each with a GET plus a preserve-when-absent
write under /api/settings. The list hook now reads and writes the server
value and carries a browser-stored order up once when the server holds
none, so an existing arrangement follows the person to every device instead
of resetting.
Marc-André Bombeck