fix(activitypub): deliver outgoing notes to followers (getFollowerSharedInboxes wrong column)

[Panxatony]

What

getFollowerSharedInboxes() in core/activitypub/collection.js filtered the followers rows with WHERE f.name = ? bound to the followers endpoint URL. In the collection table, name holds the collection type ('followers') while the endpoint URL lives in collection_id (per the schema comments and every other query in the file). So the JOIN matched zero rows → no shared inboxes collected → outgoing public notes were written to the outbox but never delivered to followers. The tosser still logged "Note Activity published successfully", masking the failure.

Fix

- WHERE f.name = ?
+ WHERE f.collection_id = ? AND f.name = ?
  ...
- .all(ActorCollectionId, Collections.Actors, followersEndpoint);
+ .all(ActorCollectionId, Collections.Actors, followersEndpoint, Collections.Followers);

Verification

Confirmed at the SQL level on a live install: the original WHERE f.name = <url> returns 0 rows; the corrected WHERE f.collection_id = <url> AND f.name = 'followers' returns the follower's endpoints.sharedInbox. After the patch, posting a public note logs "Message delivered to Inbox" inbox=https://<remote>/inbox and the note appears in the follower's Mastodon timeline.

Likely a regression from the SQL refactor that replaced the previous per-actor Actor.fromId() fan-out loop.

Fixes #701

[NuSkooler]

Thanks so much for this!