Replies to a persona's posts reach its followers; personas join remote events

Two owner decisions of 2026-10-05, recorded in the roadmap.

Replies passed on ("the fediverse is broken without"): a public or unlisted
reply from another server to a persona's public, unlisted or followers-only
post goes on to the persona's followers as its author's server sent it, as
Mastodon forwards it, never to the replier's own server, never for a
local-only or group post; its edit and deletion follow. Only an activity its
own actor delivered is passed on (Arrival.Raw), so nothing forwarded is
forwarded again. The town checks it as relay.reply cells (specs/relay-five:
882 checks pass); Mastodon takes a passed-on activity only with an LD
signature, which GoToSocial and Akkoma don't add, and the checker knows it.

Events: a persona joins another server's event with a Join and leaves it with
a Leave, both to the organiser only, through
POST /api/privapub/v1/statuses/:id/join|leave; the organiser's Accept or
Reject is routed by our join id and shows as privapub.event.participation.
Events by invitation or taken on another site are refused before anything
is sent. Mobilizon's scenario joins and leaves an event (28 checks) and keeps
one for decePubClient's e2e.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

PrivaPub/Federation/Inbox/Handlers/UpdateHandler.cs

@@ -25,10 +25,12 @@ namespace PrivaPub.Federation.Inbox.Handlers
 		readonly IGroupDistributor _groups;
 		readonly IObjectRecords _records;
 		readonly IQuoteService _quotes;
+		readonly IDeliveryService _delivery;
 
 		public UpdateHandler(DbEntities dbEntities, ILocalActorService localActors, IRemoteActorService remoteActors, IGroupDistributor groups,
-			IObjectRecords records, IQuoteService quotes)
+			IObjectRecords records, IQuoteService quotes, IDeliveryService delivery = default)
 		{
+			_delivery = delivery;
 			_quotes = quotes;
 			_records = records;
 			_groups = groups;
@@ -90,6 +92,8 @@ namespace PrivaPub.Federation.Inbox.Handlers
 
 			var edited = await RemoteEdits.Apply(post, note, Id(activity), _localActors, _records, _quotes, token);
 			Arrival.Accept(edited ? "edit" : "refresh");
+			if (edited)
+				await ReplyRelay.Pass(post, _dbEntities, _localActors, _delivery, token);
 			if (edited && !string.IsNullOrEmpty(post.GroupId) && await _localActors.FindById(Models.Federation.LocalActorKind.Group, post.GroupId, token) is { IsCircle: false } community)
 				await _groups.Announce(community, activity.AsObject(), post.ObjectURI, isNewPost: false, token);
 		}