Owners can now POST /requests/{id}/cancel to withdraw a pending
request; admins can cancel any active request that has not entered
the fulfillment pipeline. The route is mounted on both the user
group (with profile required) and the admin group. The cancelled
outcome was already reserved in the migration's CHECK constraint
but was unreachable from any handler.
Decline now also rejects approved requests — between Approve setting
StatusApproved and the reconciler picking the request up, an admin
could declare the request declined while submission was about to
fire. The reconciler's outcome filter would skip the request, but
the narrow window meant external state could diverge from Silo's
view. Refuse decline once a request is approved; callers should
wait for completion or use the failed/retry path.
Reconcile now emits a slog.WarnContext at the per-request failure
site with request id, media type, tmdb id, status, and integration
kind. Aggregated counters in ReconcileResult are unchanged.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
