The catalog indexed every as:Event written to any user's outbox and served private bodies (other apps' events, friend-addressed ones); since the index is persistent, they survived restarts. It now lists only objects addressed to the Public collection in to (cc-only is unlisted: readable, never listed), using the same predicate module as the public-read grant; stored entries that do not qualify are filtered at every read and swept at startup by a conditional delete. A create, update or delete is applied only when the object lies under the pod of the actor whose outbox emitted it (same origin, path prefix with a / boundary): one user could previously remove another's entry with a Delete carrying an embedded Tombstone. Catalog handlers never throw into the webhook path, whose listener does not await them.
Sylvain Duchesne
f14cc37f4c