AppSubscription::checkout() takes an optional $startsAt (needs id-core
with starts_at support on PUT v1/client/subscriptions/{id}/checkout).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- $user->appSubscriptions(): create (idempotency_key), find, all, checkout, revoke, pause,
resume, update against /v1/client/subscriptions with a client credentials token, so apps don't
depend on the user's login
- user id from the billable's anikeen_id (AnikeenId::useUserIdField())
- ApiException with status, stable error code, isNotFound/isConflict/isTemporary; network
errors no longer escape as raw Guzzle exceptions
- rejected app tokens are renewed once; asApp() never changes the shared client's token
- tests (testbench + Guzzle mock) and CI
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Maurice PreußandClaude Opus 5.5
