P7: downvotes go out, and feeds are read through the server's reader

Votes out. A persona's downvote is a Dislike (POST /api/v1/statuses/:id/downvote and /undownvote, the viewer's own as
privapub.votes.downvoted). One vote a post: a changed vote is sent as the new vote alone, as Lemmy sends one, since an
Undo of the old one beside it could arrive after it and take the new one away; Undo goes only when a vote is taken back.
A vote on a post in a remote community goes to the community, which counts it, and to the author only when on another
server: one copy a server, since PieFed drops a second copy of an activity it has just seen. Mbin keeps a favourite
apart from a vote, so there a favourite stays after a switch to a downvote.

Feeds followed (owner decision 2026-10-07: through the server). Following a feed (Lemmy's multi-community, PieFed's feed)
keeps a FeedSubscription for the persona and nothing else; the new Service privapub_feeds (LocalActorKind.Reader,
reserved by migration _017) follows every community of the feeds read here, reconciled when a persona follows or leaves
one, when a feed's list is read again (kept as it was when it cannot be read) and every six hours. Its Following rows
carry FollowerKind, so nobody's home gets what it brings in and its unanswered follows are sent again as its own. The
persona reads GET /api/v1/timelines/feed/:id (the feed's threads, ours included) and lists its feeds at GET /api/v1/feeds.

Checked in the pasture, every scenario: 873 pass. The 14 failures are Hubzilla's (identical on the previous commit:
Hubzilla no longer answers a follow in this pasture since its restore) and two activities Smithereen never sent;
followsync passes once the pasture's restore is older than the 14-day pause. Live: alice's downvotes count as downvotes
on Lemmy 1.0 and PieFed, replacing her upvote; Lemmy 1.0 and PieFed take privapub_feeds' follows and their threads reach
the feed timelines.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012CzABvBkbcFqoHdmi8b9WB

CLAUDE.md

@@ -22,8 +22,12 @@ Its defining idea: **one private login owns several public personas.**
 - **`DmGroup` is a direct-message conversation.**
 - **`privapub` is the instance actor** (type Application). It signs fetches no persona should be tied to.
 - **`privapub_reports` is the reporter** (type Service, `LocalActorKind.Reporter`). It carries reports to Lemmy, which
-  takes none from an Application, and to PieFed and Mbin, and names nobody. Both are server actors
+  takes none from an Application, and to PieFed and Mbin, and names nobody.
-  (`LocalActor.IsServerActor`): never followed, mentioned or shown as accounts.
+- **`privapub_feeds` is the reader of feeds** (type Service, `LocalActorKind.Reader`). When a persona follows a feed
+  (Lemmy's multi-community, PieFed's feed), it follows the feed's communities in the server's name
+  (`Domain/Social/FeedFollows.cs`, owner decision 2026-10-07); its `Following` rows carry `FollowerKind`, and nobody's
+  home gets what it brings in. All three are server actors (`LocalActor.IsServerActor`): never followed, mentioned or
+  shown as accounts.
 
 Privacy features in the model:
 - location-ranged posts (`Post.Location`, `RangeKm`), to become local-only and never federated;
@@ -288,7 +292,9 @@ group www-data and reaches the private mongod; `sudo -u www-data` works too.
    (`NotificationPermission`).
 7. **What a Mastodon `Status` cannot say goes in `Status.privapub`** (`PrivaPubStatus`): object type, title, excerpt,
    cover, the author's source, link, video, audio and event details, a remote post's own place (Pixelfed's `location`,
-   never federated again), up/down votes, and its community's flairs (`ObjectShapes.Flairs`, both dialects). Every media URL in it goes
+   never federated again), up/down votes and the viewer's own downvote (`votes.downvoted`, set through PrivaPub's
+   `POST /api/v1/statuses/:id/downvote` and `/undownvote`; a favourite is the upvote), and its community's flairs
+   (`ObjectShapes.Flairs`, both dialects). Every media URL in it goes
    through the proxy; only page links (`link.url`, an event's online link) point at the remote site, because following
    one is the reader's choice.
 

FEDERATION.md

@@ -136,6 +136,9 @@ The names are the project's own and are stable; resolve actors through WebFinger
 - The reporter is `/peasants/privapub_reports` (type `Service`, "Reports from <host>"), one for the whole server with
   its own key. It sends the reports Lemmy, PieFed and Mbin take in Lemmy's shape (see **Reports** below) and does
   nothing else: nobody follows or mentions it, the Mastodon API has no account for it, and it has no page.
+- The reader of feeds is `/peasants/privapub_feeds` (type `Service`, "Feeds read on <host>"), one for the whole server
+  with its own key. When a persona here follows a feed, the reader follows each community in it, and stops following one
+  no feed read here holds any more; no community and no feed learns which persona reads it. It does nothing else.
 
 ## Groups
 
@@ -172,7 +175,9 @@ A group is either a **community** or a **circle**.
   there with its thread; a move into a community this server hosts is not taken.
 - **Feeds** (Lemmy 1.0's multi-communities and PieFed's feeds, `type: Feed`) are read as accounts whose following is
   their communities: the feed's `following` collection, read once a day with its counts, and each community in it read in
-  turn. A feed cannot be followed from here yet; its communities can.
+  turn. A persona following a feed is followed through the server (owner decision 2026-10-07): the reader of feeds
+  follows its communities, the feed itself is sent nothing, and the persona reads the feed's threads in a timeline of
+  its own (`GET /api/v1/timelines/feed/:id`; the feeds it reads are `GET /api/v1/feeds`), not in its home.
 
 ## Activities
 
@@ -201,8 +206,14 @@ Received:
 | `Block` of a persona | the follows between them end, the blocker's posts and notifications are hidden from the persona, nothing of the persona's is addressed to the blocker, and the relationship says `blocked_by`; `Undo{Block}` lifts it |
 
 Sent: `Follow`, `Undo{Follow}`, `Create{Note}`, `Create{Question}` and poll votes, `EmojiReact` and its `Undo`, `Update{Note}`, `Update{Person}`, `Delete{Tombstone}`, `Accept{Follow}`,
-`Reject{Follow}`, `Like`, `Announce` and their `Undo`, `Flag`, `Join` and `Leave` of a remote event, and the replies to a
+`Reject{Follow}`, `Like`, `Dislike`, `Announce` and their `Undo`, `Flag`, `Join` and `Leave` of a remote event, and the
-persona's posts passed on to its followers. A deleted post answers 410 with a `Tombstone`.
+replies to a persona's posts passed on to its followers. A deleted post answers 410 with a `Tombstone`.
+
+- **Votes.** A favourite is a `Like`, a downvote a `Dislike`; a persona has one vote a post, and a changed vote is sent
+  as the new vote alone, as Lemmy sends one (an `Undo` of the old one beside it could arrive after it and take the new
+  one away). `Undo` is sent only when the vote is taken back. A vote on a post in a remote community goes to the
+  community, which counts it and passes it on, as Lemmy sends one, and to the post's author only when it lives on
+  another server: one copy a server, since PieFed drops a second copy of an activity it has just seen.
 
 - **Attachments** are `Document`s with `mediaType`, `name` (alt text), `blurhash`, `focalPoint`, `width` and `height`.
   Uploaded files have all metadata removed.
@@ -405,8 +416,9 @@ Posts with a location (shown to nearby users of this server) never leave the ser
   unlisted replies are kept, each fetched from its own origin. A thread collection read whole, which counts its posts or
   holds them all, is asked again with `If-None-Match` and its last ETag; a 304 ends the read.
 - **Reading our documents (SecureMode).** privapub.thepra.dev answers ActivityPub GETs only when they are signed, like
-  Mastodon's authorized fetch; the server's own actors (the instance actor `/peasants/privapub` and the reporter
+  Mastodon's authorized fetch; the server's own actors (the instance actor `/peasants/privapub`, the reporter
-  `/peasants/privapub_reports`) are the exception, since their keys are needed first.
+  `/peasants/privapub_reports` and the reader of feeds `/peasants/privapub_feeds`) are the exception, since their keys
+  are needed first.
   A browser asking for HTML is redirected to the public page instead.
 - **Posts that are not public** (followers-only, direct, circle) are served to a signed request from someone they were
   for, or from the instance actor of a server where someone they were for lives, and to nobody else (404). Once deleted

PrivaPub.Tests/Domain/ContentRendererTests.cs

@@ -71,6 +71,7 @@ namespace PrivaPub.Tests.Domain
 			public Task<LocalActor> FindByAddress(string address, CancellationToken token) => throw new NotSupportedException();
 			public Task<LocalActor> GetInstanceActor(CancellationToken token) => throw new NotSupportedException();
 			public Task<LocalActor> GetReporterActor(CancellationToken token) => throw new NotSupportedException();
+			public Task<LocalActor> GetReaderActor(CancellationToken token) => throw new NotSupportedException();
 			public Task<bool> IsUserNameTaken(string userName, CancellationToken token) => throw new NotSupportedException();
 			public Task<bool> TryReserveUserName(string userName, LocalActorKind kind, string ownerId, CancellationToken token) => throw new NotSupportedException();
 			public LocalActor FromAvatar(Avatar avatar) => throw new NotSupportedException();

PrivaPub.Tests/Http/MastodonFeedTests.cs

@@ -1,5 +1,10 @@
+using MongoDB.Entities;
+
 using PrivaPub.Federation.Actors;
+using PrivaPub.Models.Federation;
 using PrivaPub.Models.Jobs;
+using PrivaPub.Models.Post;
+using PrivaPub.Models.Social;
 using PrivaPub.Tests.Support;
 using PrivaPub.Tests.Support.Host;
 
@@ -61,7 +66,75 @@ namespace PrivaPub.Tests.Http
 			var communities = (await reader.Client.Get($"/api/v1/accounts/{account.ID}/following")).Ok().Array;
 			Assert.Equal(new[] { cats.Id, dogs.Id }, communities.Select(c => c.Text("uri")));
 			Assert.All(communities, c => Assert.True(c!["group"]!.GetValue<bool>()));
-			Assert.Equal(HttpStatusCode.UnprocessableEntity, (await reader.Client.Post($"/api/v1/accounts/{account.ID}/follow")).Status);
+		}
+
+		// owner decision 2026-10-07: a feed is read through the server, whose reader follows its communities; the persona
+		// follows nothing, and reads the feed in a timeline of its own
+		[Fact]
+		public async Task A_feed_is_followed_by_the_servers_reader_and_read_in_its_own_timeline()
+		{
+			var token = TestContext.Current.CancellationToken;
+			var since = DateTime.UtcNow.AddSeconds(-1);
+			var persona = await _host.Mastodon("feedreader");
+			var cats = new RemoteActor(_peer, "cats", type: "Group");
+			var dogs = new RemoteActor(_peer, "dogs", type: "Group");
+			var poster = new RemoteActor(_peer, "poster");
+			var name = $"feed{Guid.NewGuid():N}"[..12];
+			var feed = $"{_peer.A}/m/{name}";
+			_peer.Serve($"/m/{name}", new JsonObject
+			{
+				["type"] = "Feed", ["id"] = feed, ["inbox"] = $"{_peer.A}/inbox", ["following"] = $"{feed}/following", ["preferredUsername"] = name, ["name"] = "Pets"
+			}.ToJsonString());
+			_peer.Serve($"/m/{name}/following", new JsonObject
+			{
+				["type"] = "Collection", ["id"] = $"{feed}/following", ["totalItems"] = 2, ["items"] = new JsonArray(cats.Id, dogs.Id)
+			}.ToJsonString());
+			var account = await _host.Get<IRemoteActorService>().GetActor(feed, refresh: true, token);
+			await _host.Run(j => j.Kind == JobKind.CountAccount && j.Payload == feed, token);
+
+			var followed = (await persona.Client.Post($"/api/v1/accounts/{account.ID}/follow")).Ok().Body;
+			Assert.True(followed.Flag("following"));
+			Assert.Equal(new[] { account.ID }, (await persona.Client.Get("/api/v1/feeds")).Ok().Ids);
+			await _host.Run(j => j.Kind == JobKind.SyncFeeds, token);
+
+			var readerActor = await _host.Get<ILocalActorService>().GetReaderActor(token);
+			var follows = await DB.Default.Find<Following>().Match(f => f.AvatarId == readerActor.Id).ExecuteAsync(token);
+			Assert.Equal(new[] { cats.Id, dogs.Id }.Order(), follows.Select(f => f.TargetActorURI).Order());
+			Assert.All(follows, f => Assert.Equal(LocalActorKind.Reader, f.FollowerKind));
+			Assert.False(await DB.Default.Find<Following>().Match(f => f.AvatarId == persona.Id).ExecuteAnyAsync(token));
+			var asked = Assert.Single(await cats.Delivered(since), d => d.Type() == "Follow");
+			Assert.Equal(readerActor.Uri, asked.Text("actor"));
+			var document = (await _host.Client().Fetch(new Uri(readerActor.Uri).AbsolutePath)).Json;
+			Assert.Equal(("Service", LocalActorService.ReaderUserName), (document.Text("type"), document.Text("preferredUsername")));
+
+			await _host.Deliver(cats, "/human-centipede", new JsonObject
+			{
+				["id"] = $"{cats.Id}/accepts/{Guid.NewGuid():N}", ["type"] = "Accept", ["actor"] = cats.Id, ["object"] = asked.Text("id")
+			});
+			var create = poster.Create("<p>a thread among cats</p>", new[] { "https://www.w3.org/ns/activitystreams#Public", cats.Id }, shape: note =>
+			{
+				note["type"] = "Page";
+				note["name"] = "Cats";
+				note["audience"] = cats.Id;
+			});
+			_peer.Serve(new Uri(create["object"]!.Text("id")).AbsolutePath, create["object"]!.ToJsonString());
+			await _host.Deliver(cats, "/human-centipede", new JsonObject
+			{
+				["id"] = $"{cats.Id}/announces/{Guid.NewGuid():N}", ["type"] = "Announce", ["actor"] = cats.Id, ["object"] = create,
+				["to"] = new JsonArray("https://www.w3.org/ns/activitystreams#Public")
+			});
+			var thread = await DB.Default.Find<Post>().Match(p => p.ObjectURI == create["object"]!.Text("id")).ExecuteSingleAsync(token);
+
+			Assert.Equal(new[] { thread.ID }, (await persona.Client.Get($"/api/v1/timelines/feed/{account.ID}")).Ok().Ids);
+			Assert.DoesNotContain(thread.ID, (await persona.Client.Get("/api/v1/timelines/home")).Ok().Ids);
+			Assert.False(await DB.Default.Find<TimelineEntry>().Match(e => e.PostId == thread.ID).ExecuteAnyAsync(token));
+			var stranger = await _host.Mastodon("notreading");
+			Assert.Equal(HttpStatusCode.NotFound, (await stranger.Client.Get($"/api/v1/timelines/feed/{account.ID}")).Status);
+
+			Assert.False((await persona.Client.Post($"/api/v1/accounts/{account.ID}/unfollow")).Ok().Body.Flag("following"));
+			await _host.Run(j => j.Kind == JobKind.SyncFeeds, token);
+			Assert.False(await DB.Default.Find<Following>().Match(f => f.AvatarId == readerActor.Id).ExecuteAnyAsync(token));
+			Assert.Contains(await cats.Delivered(since), d => d.Type() == "Undo" && d["object"].Text("type") == "Follow");
 		}
 	}
 }

PrivaPub.Tests/Http/MastodonStatusesTests.cs

@@ -388,6 +388,47 @@ namespace PrivaPub.Tests.Http
 			Assert.True((await alice.Client.Post($"/api/v1/statuses/{quiet.Text("id")}/favourite")).Ok().Body.Flag("favourited"));
 		}
 
+		// a downvote is a Dislike, one vote a post: a downvote replaces the favourite and a favourite the downvote, each by its
+		// own activity alone; a vote on a post in a community goes to the community, which counts it, and to its author only
+		// when on another server
+		[Fact]
+		public async Task A_downvote_replaces_the_favourite_and_votes_reach_the_posts_community()
+		{
+			var since = DateTime.UtcNow.AddSeconds(-1);
+			var alice = await _host.Mastodon("alice");
+			var bob = new RemoteActor(_peer, "bob", origin: _peer.B);
+			var community = new RemoteActor(_peer, "pies", type: "Group");
+			await _host.Get<PrivaPub.Federation.Actors.IRemoteActorService>().GetActor(community.Id, refresh: true, TestContext.Current.CancellationToken);
+			var remote = await _host.PublicPostFrom(bob, alice, shape: note => note["audience"] = community.Id);
+			var neighbour = new RemoteActor(_peer, "neighbour");
+			var nearby = await _host.PublicPostFrom(neighbour, alice, shape: note => note["audience"] = community.Id);
+			(await alice.Client.Post($"/api/v1/statuses/{nearby.ID}/favourite")).Ok();
+			Assert.Empty(await neighbour.Delivered(since));
+			var path = $"/api/v1/statuses/{remote.ID}";
+
+			(await alice.Client.Post(path + "/favourite")).Ok();
+			var down = (await alice.Client.Post(path + "/downvote")).Ok().Body;
+			Assert.False(down.Flag("favourited"));
+			Assert.Equal((0, 1, true), (down["privapub"]!["votes"].Number("up"), down["privapub"]!["votes"].Number("down"), down["privapub"]!["votes"].Flag("downvoted")));
+			Assert.Equal(1, (await alice.Client.Post(path + "/downvote")).Ok().Body["privapub"]!["votes"].Number("down"));
+			var up = (await alice.Client.Post(path + "/favourite")).Ok().Body;
+			Assert.Equal((true, 0, false), (up.Flag("favourited"), up["privapub"]!["votes"].Number("down"), up["privapub"]!["votes"].Flag("downvoted")));
+			Assert.Null((await _host.Client().Get(path)).Ok().Body["privapub"]!["votes"]!["downvoted"]);
+			(await alice.Client.Post(path + "/downvote")).Ok();
+			var none = (await alice.Client.Post(path + "/undownvote")).Ok().Body;
+			Assert.Equal((false, 0, 0), (none.Flag("favourited"), none.Number("favourites_count"), none["privapub"]!["votes"].Number("down")));
+
+			foreach (var inbox in new[] { bob, community })
+			{
+				var sent = (await inbox.Delivered(since)).Where(d => (d.Type() == "Undo" ? d["object"].Text("object") : d.Text("object")) == remote.ObjectURI).ToList();
+				Assert.Equal(new[] { "Like", "Dislike", "Like", "Dislike", "Undo:Dislike" },
+					sent.Select(d => d.Type() == "Undo" ? "Undo:" + d["object"].Text("type") : d.Type()));
+				var dislike = sent.Last(d => d.Type() == "Dislike");
+				Assert.Equal((alice.Uri, remote.ObjectURI), (dislike.Text("actor"), dislike.Text("object")));
+				Assert.Equal(dislike.Text("id"), sent.Single(d => d.Type() == "Undo")["object"].Text("id"));
+			}
+		}
+
 		[Fact]
 		public async Task A_favourite_or_a_boost_given_again_after_its_undo_is_a_new_activity_that_is_delivered()
 		{

PrivaPub/Api/Mastodon/Controllers/AccountsController.cs

@@ -32,10 +32,12 @@ namespace PrivaPub.Api.Mastodon.Controllers
 		readonly IFollowService _follows;
 		readonly IOutboxPublisher _outbox;
 		readonly IRelationshipService _relationships;
+		readonly IFeedFollows _feeds;
 
 		public AccountsController(MastodonMapper mapper, DbEntities dbEntities, ILocalActorService localActors, IRemoteActorService remoteActors,
-			IFollowService follows, IOutboxPublisher outbox, IRelationshipService relationships)
+			IFollowService follows, IOutboxPublisher outbox, IRelationshipService relationships, IFeedFollows feeds)
 		{
+			_feeds = feeds;
 			_relationships = relationships;
 			_mapper = mapper;
 			_dbEntities = dbEntities;
@@ -266,14 +268,27 @@ namespace PrivaPub.Api.Mastodon.Controllers
 			return Json(following.Select(f => accounts.GetValueOrDefault(f.TargetAccountId)).Where(a => a != default).ToList());
 		}
 
+		// PrivaPub's own: the feeds the persona reads (a feed's timeline is /api/v1/timelines/feed/:id)
+		[HttpGet("/api/v1/feeds"), Scope("read:follows")]
+		public async Task<IActionResult> Feeds(CancellationToken token)
+		{
+			var read = await DB.Default.Find<FeedSubscription>().Match(s => s.AvatarId == MyId).Sort(s => s.ID, MongoDB.Entities.Order.Descending).ExecuteAsync(token);
+			var accounts = await _mapper.Accounts(read.Select(s => s.FeedAccountId), token);
+			return Json(read.Select(s => accounts.GetValueOrDefault(s.FeedAccountId)).Where(a => a != default).ToList());
+		}
+
 		[HttpPost("/api/v1/accounts/{id}/follow"), Scope("write:follows")]
 		public async Task<IActionResult> Follow(string id, CancellationToken token)
 		{
 			var (local, remote) = await Find(id, token);
 			if (local == default && remote == default)
 				return NotFoundError();
+			// a feed is read through the server, whose reader follows its communities; the persona follows nothing
 			if (remote is { AvatarType: AvatarType.Feed })
-				return Error(StatusCodes.Status422UnprocessableEntity, "A feed is followed through its communities");
+			{
+				await _feeds.Subscribe(Me, remote, true, token);
+				return Json(await Relationship(id, token));
+			}
 			var following = await _follows.FollowAs(Me, local?.Uri ?? remote.ActorURI, Params.Bool("reblogs") != false, token);
 			return following == default ? Error(StatusCodes.Status403Forbidden, "This action is not allowed") : Json(await Relationship(id, token));
 		}
@@ -284,6 +299,9 @@ namespace PrivaPub.Api.Mastodon.Controllers
 			var (local, remote) = await Find(id, token);
 			if (local == default && remote == default)
 				return NotFoundError();
+			if (remote is { AvatarType: AvatarType.Feed })
+				await _feeds.Subscribe(Me, remote, false, token);
+			else
 				await _follows.UnfollowAs(Me, local?.Uri ?? remote.ActorURI, token);
 			return Json(await Relationship(id, token));
 		}
@@ -432,6 +450,7 @@ namespace PrivaPub.Api.Mastodon.Controllers
 			var (local, remote) = await Find(id, token);
 			var uri = local?.Uri ?? remote?.ActorURI;
 			var following = uri == default ? default : await _dbEntities.Followings.Match(f => f.AvatarId == MyId && f.TargetActorURI == uri).ExecuteFirstAsync(token);
+			var reading = remote is { AvatarType: AvatarType.Feed } && await _feeds.IsSubscribed(MyId, remote.ActorURI, token);
 			var followedBy = uri == default ? default : await _dbEntities.Followers.Match(f => f.LocalActorId == MyId && f.ActorURI == uri).ExecuteFirstAsync(token);
 			var blocking = uri != default && await DB.Default.Find<Block>().Match(b => b.AvatarId == MyId && b.TargetActorURI == uri).ExecuteAnyAsync(token);
 			var mute = uri == default ? default : await DB.Default.Find<Mute>().Match(m => m.AvatarId == MyId && m.TargetActorURI == uri).ExecuteFirstAsync(token);
@@ -448,7 +467,7 @@ namespace PrivaPub.Api.Mastodon.Controllers
 				Muting = mute != default && (mute.ExpiresAt == default || mute.ExpiresAt > DateTime.UtcNow),
 				MutingNotifications = mute?.HideNotifications == true,
 				DomainBlocking = domainBlocked,
-				Following = following?.State == FollowState.Accepted,
+				Following = following?.State == FollowState.Accepted || reading,
 				Requested = following?.State == FollowState.Requested,
 				ShowingReblogs = following?.ShowReblogs ?? false,
 				FollowedBy = followedBy?.IsAccepted == true,

PrivaPub/Api/Mastodon/Controllers/StatusesController.cs

@@ -333,6 +333,13 @@ namespace PrivaPub.Api.Mastodon.Controllers
 		[HttpPost("/api/v1/statuses/{id}/unfavourite"), Scope("write:favourites")]
 		public Task<IActionResult> Unfavourite(string id, CancellationToken token) => Toggle(_statuses.Favourite(Me, id, false, token), id, token);
 
+		// PrivaPub's own, for the threadiverse's downvotes (a favourite is the upvote)
+		[HttpPost("/api/v1/statuses/{id}/downvote"), Scope("write:favourites")]
+		public Task<IActionResult> Downvote(string id, CancellationToken token) => Toggle(_statuses.Downvote(Me, id, true, token), id, token);
+
+		[HttpPost("/api/v1/statuses/{id}/undownvote"), Scope("write:favourites")]
+		public Task<IActionResult> Undownvote(string id, CancellationToken token) => Toggle(_statuses.Downvote(Me, id, false, token), id, token);
+
 		[HttpPost("/api/v1/statuses/{id}/reblog"), Scope("write:statuses")]
 		public async Task<IActionResult> Reblog(string id, CancellationToken token)
 		{

PrivaPub/Api/Mastodon/Controllers/TimelinesController.cs

@@ -64,6 +64,26 @@ namespace PrivaPub.Api.Mastodon.Controllers
 			return await Respond(query, "/api/v1/timelines/public", token);
 		}
 
+		// PrivaPub's own: a feed the persona reads (Lemmy's multi-community, PieFed's feed), its communities' threads,
+		// newest first, as the server's reader of feeds brings them in (owner decision 2026-10-07)
+		[HttpGet("/api/v1/timelines/feed/{id}"), Scope("read:statuses")]
+		public async Task<IActionResult> Feed(string id, CancellationToken token)
+		{
+			var feed = await _dbEntities.ForeignAvatars.MatchID(id).ExecuteFirstAsync(token);
+			if (feed is not { AvatarType: Models.User.AvatarType.Feed }
+				|| !await DB.Default.Find<FeedSubscription>().Match(s => s.AvatarId == MyId && s.FeedActorURI == feed.ActorURI).ExecuteAnyAsync(token))
+				return NotFoundError();
+			var communities = feed.FeedCommunities;
+			var ours = Me.BaseAddress + "/peasants/";
+			var names = communities.Where(c => c.StartsWith(ours, StringComparison.Ordinal)).Select(c => c[ours.Length..]).ToList();
+			var groups = names.Count == 0
+				? new List<string>()
+				: (await _dbEntities.Groups.Match(g => names.Contains(g.UserName) && !g.DeletionAt.HasValue).ExecuteAsync(token)).Select(g => g.ID).ToList();
+			var query = _dbEntities.Posts.Match(p => (communities.Contains(p.AudienceURI) || groups.Contains(p.GroupId))
+				&& p.ReblogOfPostId == null && p.InReplyToURI == null).Match(VisibilityPolicy.IsPublic);
+			return await Respond(query, $"/api/v1/timelines/feed/{id}", token);
+		}
+
 		[HttpGet("/api/v1/timelines/tag/{hashtag}"), Scope("read:statuses", requiresUser: false), Microsoft.AspNetCore.Authorization.AllowAnonymous]
 		public async Task<IActionResult> Tag(string hashtag, CancellationToken token)
 		{

PrivaPub/Api/Mastodon/Entities/Entities.cs

@@ -180,6 +180,7 @@
 	{
 		public int Up { get; set; }
 		public int Down { get; set; }
+		public bool? Downvoted { get; set; }//the viewer's own downvote; null with no viewer
 	}
 
 	public class QuoteEntity

PrivaPub/Api/Mastodon/Mappers/MastodonMapper.cs

@@ -218,6 +218,9 @@ namespace PrivaPub.Api.Mastodon.Mappers
 			var favourited = viewerId == default
 				? new HashSet<string>()
 				: (await _dbEntities.Favourites.Match(f => f.AccountId == viewerId && ids.Contains(f.PostId)).ExecuteAsync(token)).Select(f => f.PostId).ToHashSet();
+			var downvoted = viewerId == default
+				? new HashSet<string>()
+				: (await DB.Default.Find<Downvote>().Match(d => d.AccountId == viewerId && ids.Contains(d.PostId)).ExecuteAsync(token)).Select(d => d.PostId).ToHashSet();
 			var bookmarked = viewerId == default
 				? new HashSet<string>()
 				: (await DB.Default.Find<Bookmark>().Match(b => b.AvatarId == viewerId && ids.Contains(b.PostId)).ExecuteAsync(token)).Select(b => b.PostId).ToHashSet();
@@ -286,7 +289,7 @@ namespace PrivaPub.Api.Mastodon.Mappers
 					Card = Card(post),
 					Poll = Poll(post, viewerId, ownVotes.GetValueOrDefault(post.ID)),
 					Emojis = Emojis(post.Emojis),
-					Privapub = Extension(post, accounts),
+					Privapub = Extension(post, accounts, viewerId == default ? default(bool?) : downvoted.Contains(post.ID)),
 					EmojiReactions = reactions.GetValueOrDefault(post.ID) ?? new(),
 					Pleroma = new PleromaStatus { EmojiReactions = reactions.GetValueOrDefault(post.ID) ?? new() },
 					Mentions = post.Mentions.Where(m => !m.Silent).Select(m => Mention(m, mentionAccounts)).Where(m => m != default).ToList(),
@@ -489,7 +492,7 @@ namespace PrivaPub.Api.Mastodon.Mappers
 		List<CustomEmojiEntity> Emojis(IEnumerable<CustomEmoji> emojis) =>
 			emojis?.Select(e => new CustomEmojiEntity { Shortcode = e.Shortcode, Url = Proxied(e.URL), StaticUrl = Proxied(e.URL) }).ToList() ?? new();
 
-		PrivaPubStatus Extension(PostEntity post, Dictionary<string, Account> accounts) => new()
+		PrivaPubStatus Extension(PostEntity post, Dictionary<string, Account> accounts, bool? downvoted) => new()
 		{
 			Wall = post.WallOwnerAccountId == default || post.WallOwnerAccountId == AuthorOf(post) ? default : accounts.GetValueOrDefault(post.WallOwnerAccountId),
 			ObjectType = post.ObjectType,
@@ -543,7 +546,7 @@ namespace PrivaPub.Api.Mastodon.Mappers
 			{
 				Name = post.Place.Name, Latitude = post.Place.Latitude, Longitude = post.Place.Longitude, Country = post.Place.Country
 			},
-			Votes = new PrivaPubVotes { Up = post.FavouritesCount, Down = post.DownvotesCount },
+			Votes = new PrivaPubVotes { Up = post.FavouritesCount, Down = post.DownvotesCount, Downvoted = downvoted },
 			Flairs = post.Flairs?.Select(f => new PrivaPubFlair
 			{
 				Id = f.Id, Name = f.Name, Slug = f.Slug, Description = f.Description, Color = f.Color, TextColor = f.TextColor,

PrivaPub/Domain/Social/FeedFollows.cs

@@ -0,0 +1,134 @@
+using MongoDB.Driver;
+using MongoDB.Entities;
+
+using PrivaPub.Federation.Actors;
+using PrivaPub.Infrastructure.Jobs;
+using PrivaPub.Models.Jobs;
+using PrivaPub.Models.Social;
+using PrivaPub.Models.User;
+using PrivaPub.StaticServices;
+
+namespace PrivaPub.Domain.Social
+{
+	public interface IFeedFollows
+	{
+		Task<bool> Subscribe(LocalActor me, ForeignAvatar feed, bool on, CancellationToken token);
+		Task<bool> IsSubscribed(string avatarId, string feedActorUri, CancellationToken token);
+		Task Reconcile(CancellationToken token);
+	}
+
+	// Feeds read through the server (owner decision 2026-10-07): a persona following a feed is kept here alone, and the
+	// server's reader (LocalActorService.ReaderUserName) follows every community in the feeds anyone reads, as Lemmy's own
+	// follower of multi-communities does, and stops following one no feed holds any more. What it follows arrives as any
+	// community's posts do; nobody's home shows them, the feed's timeline does.
+	public class FeedFollows : IFeedFollows
+	{
+		public const int MaxCommunities = 500;
+		static readonly TimeSpan Stale = TimeSpan.FromDays(1);
+
+		readonly DbEntities _dbEntities;
+		readonly ILocalActorService _localActors;
+		readonly IRemoteActorService _remoteActors;
+		readonly IFollowService _follows;
+		readonly IJobQueue _jobs;
+
+		public FeedFollows(DbEntities dbEntities, ILocalActorService localActors, IRemoteActorService remoteActors, IFollowService follows, IJobQueue jobs)
+		{
+			_dbEntities = dbEntities;
+			_localActors = localActors;
+			_remoteActors = remoteActors;
+			_follows = follows;
+			_jobs = jobs;
+		}
+
+		public static Task<bool> Sync(IJobQueue jobs, CancellationToken token) =>
+			jobs.Enqueue(JobKind.SyncFeeds, string.Empty, default, $"feeds|{Guid.NewGuid():N}", token);
+
+		public async Task<bool> Subscribe(LocalActor me, ForeignAvatar feed, bool on, CancellationToken token)
+		{
+			if (feed is not { AvatarType: AvatarType.Feed })
+				return false;
+			if (on)
+				try
+				{
+					await DB.Default.SaveAsync(new FeedSubscription { AvatarId = me.Id, FeedActorURI = feed.ActorURI, FeedAccountId = feed.ID }, token);
+				}
+				catch (MongoWriteException ex) when (ex.WriteError?.Category == ServerErrorCategory.DuplicateKey)
+				{
+					return true;
+				}
+			else if ((await DB.Default.DeleteAsync<FeedSubscription>(s => s.AvatarId == me.Id && s.FeedActorURI == feed.ActorURI)).DeletedCount == 0)
+				return true;
+			await Sync(_jobs, token);
+			return true;
+		}
+
+		public Task<bool> IsSubscribed(string avatarId, string feedActorUri, CancellationToken token) =>
+			DB.Default.Find<FeedSubscription>().Match(s => s.AvatarId == avatarId && s.FeedActorURI == feedActorUri).ExecuteAnyAsync(token);
+
+		public async Task Reconcile(CancellationToken token)
+		{
+			var read = (await DB.Default.Find<FeedSubscription, string>().Project(s => s.FeedActorURI).ExecuteAsync(token)).Distinct().ToList();
+			var feeds = await _dbEntities.ForeignAvatars.Match(a => read.Contains(a.ActorURI) && a.AvatarType == AvatarType.Feed && !a.DeletionAt.HasValue)
+				.ExecuteAsync(token);
+			// a feed's communities are as its server listed them a day ago at most (AccountCountsJob reads them, then asks
+			// for this again)
+			foreach (var stale in feeds.Where(f => !(DateTime.UtcNow - f.CountedAt < Stale)))
+				if (Uri.TryCreate(stale.ActorURI, UriKind.Absolute, out var uri))
+					await _jobs.Enqueue(JobKind.CountAccount, stale.ActorURI, uri.Host.ToLowerInvariant(), AccountCountsJob.DedupeKey(stale.ActorURI, DateTime.UtcNow), token);
+
+			var ours = _localActors.BaseAddress + "/";
+			var wanted = feeds.SelectMany(f => f.FeedCommunities).Where(c => !c.StartsWith(ours, StringComparison.Ordinal))
+				.Distinct(StringComparer.Ordinal).Take(MaxCommunities).ToHashSet(StringComparer.Ordinal);
+			var reader = await _localActors.GetReaderActor(token);
+			var following = await _dbEntities.Followings.Match(f => f.AvatarId == reader.Id).ExecuteAsync(token);
+			foreach (var gone in following.Where(f => !wanted.Contains(f.TargetActorURI)))
+				await _follows.UnfollowAs(reader, gone.TargetActorURI, token);
+			var followed = following.Select(f => f.TargetActorURI).ToHashSet(StringComparer.Ordinal);
+			foreach (var community in wanted.Where(c => !followed.Contains(c)))
+				// only a community: a feed lists nothing else, and the reader follows nothing else
+				if (await _remoteActors.GetActor(community, refresh: false, token) is { AvatarType: AvatarType.Group })
+					await _follows.FollowAs(reader, community, showReblogs: false, token);
+		}
+	}
+
+	public class FeedSyncJob(IServiceScopeFactory scopes) : IJobHandler
+	{
+		public JobKind Kind => JobKind.SyncFeeds;
+		public int Concurrency => 1;
+		public int MaxAttempts => 2;
+		public int PerHostLimit => 1;
+
+		public async Task<JobOutcome> Handle(Job job, CancellationToken token)
+		{
+			using var scope = scopes.CreateScope();
+			await scope.ServiceProvider.GetRequiredService<IFeedFollows>().Reconcile(token);
+			return JobOutcome.Done;
+		}
+	}
+
+	// brings the reader's follows up to date with the feeds read here, a minute after start and then every six hours
+	public sealed class FeedReader(IServiceScopeFactory scopes, ILogger<FeedReader> logger) : BackgroundService
+	{
+		static readonly TimeSpan Every = TimeSpan.FromHours(6);
+
+		protected override async Task ExecuteAsync(CancellationToken token)
+		{
+			await Task.Delay(TimeSpan.FromMinutes(1), token);
+			using var timer = new PeriodicTimer(Every);
+			do
+			{
+				try
+				{
+					using var scope = scopes.CreateScope();
+					await FeedFollows.Sync(scope.ServiceProvider.GetRequiredService<IJobQueue>(), token);
+				}
+				catch (Exception ex) when (ex is not OperationCanceledException)
+				{
+					logger.LogWarning(ex, "Feeds could not be brought up to date");
+				}
+			}
+			while (await timer.WaitForNextTickAsync(token));
+		}
+	}
+}

PrivaPub/Domain/Social/FollowService.cs

@@ -119,6 +119,7 @@ namespace PrivaPub.Domain.Social
 			var following = new Following
 			{
 				AvatarId = follower.Id,
+				FollowerKind = follower.Kind == LocalActorKind.Person ? default(LocalActorKind?) : follower.Kind,
 				TargetActorURI = targetUri,
 				TargetAccountId = local?.Id ?? remote.ID,
 				TargetIsLocal = local != default,
@@ -298,7 +299,7 @@ namespace PrivaPub.Domain.Social
 				.ExecuteAsync(token);
 			foreach (var following in pending.Where(f => (f.ResentAt ?? f.CreatedAt) + ResendAfter[f.Resent] <= now))
 			{
-				var follower = await _localActors.FindById(LocalActorKind.Person, following.AvatarId, token);
+				var follower = await _localActors.FindById(following.FollowerKind ?? LocalActorKind.Person, following.AvatarId, token);
 				var inbox = following.TargetInboxURL ?? (await _remoteActors.GetActor(following.TargetActorURI, refresh: false, token))?.InboxURL;
 				if (follower != default && !string.IsNullOrEmpty(inbox))
 				{

PrivaPub/Domain/Statuses/StatusService.cs

@@ -64,6 +64,7 @@ namespace PrivaPub.Domain.Statuses
 		Task<StatusOutcome> Edit(LocalActor author, string postId, StatusDraft draft, CancellationToken token);
 		Task<StatusOutcome> Remove(LocalActor author, string postId, CancellationToken token);
 		Task<StatusOutcome> Favourite(LocalActor me, string postId, bool on, CancellationToken token);
+		Task<StatusOutcome> Downvote(LocalActor me, string postId, bool on, CancellationToken token);
 		Task<StatusOutcome> Reblog(LocalActor me, string postId, bool on, PostVisibility visibility, CancellationToken token);
 	}
 
@@ -438,6 +439,9 @@ namespace PrivaPub.Domain.Statuses
 			var likePermission = on ? await Permission(post, me, InteractionKind.Like, token) : QuotePermission.Granted;
 			if (likePermission == QuotePermission.Denied)
 				return StatusOutcome.Fail(StatusCodes.Status422UnprocessableEntity, "Validation failed: Its author does not take likes from you");
+			// one vote a post: an upvote replaces the downvote, here and, by its Like alone, there
+			if (on)
+				await Forget<Downvote>(d => d.PostId == post.ID && d.ActorURI == me.Uri, post, p => p.DownvotesCount, token);
 
 			// each favourite is a Like of its own, as Mastodon's are: a favourite after an unfavourite is a new Like, which no
 			// server (and no delivery queue) takes for the one already undone; an unfavourite undoes the Like it ends
@@ -472,7 +476,7 @@ namespace PrivaPub.Domain.Statuses
 				post.FavouritesCount--;
 			}
 
-			if (post.IsFederatedCopy && await AuthorInbox(post, token) is { } inbox)
+			if (post.IsFederatedCopy && await VoteInboxes(post, token) is { Count: > 0 } inboxes)
 			{
 				var like = new JsonObject
 				{
@@ -485,11 +489,95 @@ namespace PrivaPub.Domain.Statuses
 				if (on && favourite.Approval == ApprovalState.Pending)
 					await _approvals.Ask(me, post, InteractionKind.Like, like, favourite.ID, token);
 				else
-					await _delivery.Enqueue(me, new[] { inbox }, on ? like : Undo(me, like, $"undo-like-{favourite.ID}"), token);
+					await _delivery.Enqueue(me, inboxes, on ? like : Undo(me, like, $"undo-like-{favourite.ID}"), token);
 			}
 			return new StatusOutcome(post);
 		}
 
+		// A downvote, as the threadiverse counts them (Lemmy, PieFed): a `Dislike` to the post's author and its community,
+		// `Undo{Dislike}` to take it back. One vote a post: a downvote replaces the upvote by its Dislike alone, as Lemmy
+		// sends a changed vote, since an Undo{Like} sent beside it could arrive after it and take the downvote away (Mbin,
+		// which keeps a favourite apart, keeps it). Public, as a favourite is (owner decision: the client tells each
+		// persona once).
+		public async Task<StatusOutcome> Downvote(LocalActor me, string postId, bool on, CancellationToken token)
+		{
+			var post = await Visible(me, postId, token);
+			if (post?.ReblogOfPostId != default)
+				post = await Visible(me, post.ReblogOfPostId, token);
+			if (post == default)
+				return StatusOutcome.Fail(StatusCodes.Status404NotFound, "Record not found");
+
+			Downvote downvote;
+			if (on)
+			{
+				await Forget<Favourite>(f => f.AccountId == me.Id && f.PostId == post.ID, post, p => p.FavouritesCount, token);
+				downvote = new Downvote { ID = ObjectId.GenerateNewId().ToString(), AccountId = me.Id, ActorURI = me.Uri, PostId = post.ID };
+				downvote.ActivityURI = me.ActivityUri($"dislike-{downvote.ID}");
+				try
+				{
+					await DB.Default.SaveAsync(downvote, token);
+				}
+				catch (MongoWriteException ex) when (ex.WriteError?.Category == ServerErrorCategory.DuplicateKey)
+				{
+					return new StatusOutcome(post);
+				}
+				await DB.Default.Update<PostEntity>().MatchID(post.ID).Modify(b => b.Inc(p => p.DownvotesCount, 1)).ExecuteAsync(token);
+				post.DownvotesCount++;
+			}
+			else
+			{
+				downvote = await DB.Default.Find<Downvote>().Match(d => d.PostId == post.ID && d.ActorURI == me.Uri).ExecuteFirstAsync(token);
+				if (downvote == default || (await DB.Default.DeleteAsync<Downvote>(downvote.ID)).DeletedCount == 0)
+					return new StatusOutcome(post);
+				await DB.Default.Update<PostEntity>().MatchID(post.ID).Modify(b => b.Inc(p => p.DownvotesCount, -1)).ExecuteAsync(token);
+				post.DownvotesCount--;
+			}
+
+			if (post.IsFederatedCopy && await VoteInboxes(post, token) is { Count: > 0 } inboxes)
+			{
+				var dislike = new JsonObject
+				{
+					["@context"] = ActivityPubRenderer.ActivityStreams,
+					["id"] = downvote.ActivityURI,
+					["type"] = "Dislike",
+					["actor"] = me.Uri,
+					["object"] = post.ObjectURI
+				};
+				await _delivery.Enqueue(me, inboxes, on ? dislike : Undo(me, dislike, $"undo-dislike-{downvote.ID}"), token);
+			}
+			return new StatusOutcome(post);
+		}
+
+		// the persona's other vote on the post, dropped here alone: the vote that replaces it says so there
+		async Task Forget<TVote>(System.Linq.Expressions.Expression<Func<TVote, bool>> mine, PostEntity post,
+			System.Linq.Expressions.Expression<Func<PostEntity, int>> count, CancellationToken token) where TVote : Entity
+		{
+			var vote = await DB.Default.Find<TVote>().Match(mine).ExecuteFirstAsync(token);
+			if (vote == default || (await DB.Default.DeleteAsync<TVote>(vote.ID)).DeletedCount == 0)
+				return;
+			await DB.Default.Update<PostEntity>().MatchID(post.ID).Modify(b => b.Inc(count, -1)).ExecuteAsync(token);
+			if (typeof(TVote) == typeof(Favourite))
+				post.FavouritesCount--;
+			else
+				post.DownvotesCount--;
+		}
+
+		// where a vote on a remote post goes: the community it was made in, which counts the votes and passes them on, as
+		// Lemmy sends one; and its author when on another server (a Mastodon account's post in a Lemmy community). One copy a
+		// server: PieFed drops the second it is sent within a minute, though its first may yet fail.
+		async Task<List<string>> VoteInboxes(PostEntity post, CancellationToken token)
+		{
+			var inboxes = new List<string>();
+			if (await Federation.Inbox.Communities.Of(post, _dbEntities, token) is { } communityUri
+				&& await _dbEntities.ForeignAvatars.Match(f => f.ActorURI == communityUri && f.AvatarType == AvatarType.Group).ExecuteFirstAsync(token) is { } community
+				&& !string.IsNullOrEmpty(community.InboxURL))
+				inboxes.Add(community.InboxURL);
+			if (await AuthorInbox(post, token) is { } author
+				&& !inboxes.Any(i => string.Equals(new Uri(i).Authority, new Uri(author).Authority, StringComparison.OrdinalIgnoreCase)))
+				inboxes.Add(author);
+			return inboxes;
+		}
+
 		// how a remote post's interaction policy takes an interaction of ours: at once, once asked, or not at all
 		async Task<QuotePermission> Permission(PostEntity target, LocalActor actor, InteractionKind kind, CancellationToken token) =>
 			target is { IsFederatedCopy: true } && _approvals != default ? await _approvals.Judge(target, actor, kind, token) : QuotePermission.Granted;

PrivaPub/Domain/Timelines/Fanout.cs

@@ -40,13 +40,14 @@ namespace PrivaPub.Domain.Timelines
 			{
 				case PostVisibility.Public or PostVisibility.Unlisted or PostVisibility.FollowersOnly:
 					var followers = post.IsFederatedCopy
-						? await _dbEntities.Followings.Match(f => f.TargetActorURI == post.ActorURI && f.State == FollowState.Accepted).ExecuteAsync(token)
+						? await _dbEntities.Followings.Match(f => f.TargetActorURI == post.ActorURI && f.State == FollowState.Accepted && f.FollowerKind == null).ExecuteAsync(token)
 						: await _dbEntities.Followings.Match(f => f.TargetAccountId == post.GroupUserId && f.TargetIsLocal && f.State == FollowState.Accepted).ExecuteAsync(token);
 					foreach (var following in followers)
 						if (await Shows(following, post, token))
 							recipients.Add(following.AvatarId);
 					if (!string.IsNullOrEmpty(post.AudienceURI))
-						foreach (var member in await _dbEntities.Followings.Match(f => f.TargetActorURI == post.AudienceURI && f.State == FollowState.Accepted).ExecuteAsync(token))
+						// (the server's reader of feeds follows communities for nobody's home)
+						foreach (var member in await _dbEntities.Followings.Match(f => f.TargetActorURI == post.AudienceURI && f.State == FollowState.Accepted && f.FollowerKind == null).ExecuteAsync(token))
 							recipients.Add(member.AvatarId);
 					// a post on a wall (FEP-400e): its owner, when a persona, and those following the owner
 					if (!string.IsNullOrEmpty(post.WallOwnerURI))

PrivaPub/Federation/Actors/AccountCountsJob.cs

@@ -19,16 +19,18 @@ namespace PrivaPub.Federation.Actors
 		readonly DbEntities _dbEntities;
 		readonly IFeaturedPosts _featured;
 		readonly ILocalActorService _localActors;
+		readonly IJobQueue _jobs;
 
 		public const int MaxFeedCommunities = 50;
 
 		public AccountCountsJob(IRemoteActorService remoteActors, DbEntities dbEntities, IFeaturedPosts featured = default,
-			ILocalActorService localActors = default)
+			ILocalActorService localActors = default, IJobQueue jobs = default)
 		{
 			_remoteActors = remoteActors;
 			_dbEntities = dbEntities;
 			_featured = featured;
 			_localActors = localActors;
+			_jobs = jobs;
 		}
 
 		public JobKind Kind => JobKind.CountAccount;
@@ -44,19 +46,24 @@ namespace PrivaPub.Federation.Actors
 			if (actor == default)
 				return JobOutcome.Done;
 			var feed = actor.AvatarType == AvatarType.Feed;
-			var (following, communities) = await Read(actor, actor.FollowingURL, feed, token);
+			var (following, communities, listed) = await Read(actor, actor.FollowingURL, feed, token);
 			var update = DB.Default.Update<ForeignAvatar>().MatchID(actor.ID)
 				.Modify(a => a.FollowersCount, (await Read(actor, actor.FollowersURL, false, token)).Total)
 				.Modify(a => a.FollowingCount, following)
 				.Modify(a => a.StatusesCount, (await Read(actor, actor.OutboxURL, false, token)).Total)
 				.Modify(a => a.CountedAt, DateTime.UtcNow);
-			if (feed)
+			// (a feed whose list could not be read keeps the one it had: the reader of feeds would unfollow them all)
+			if (feed && listed)
 				update = update.Modify(a => a.FeedCommunities, communities);
 			await update.ExecuteAsync(token);
-			if (feed)
+			if (feed && listed)
+			{
 				foreach (var community in communities)
 					if (_localActors == default || !community.StartsWith(_localActors.BaseAddress + "/", StringComparison.Ordinal))
 						await _remoteActors.GetActor(community, refresh: false, token);
+				if (_jobs != default && await DB.Default.Find<Models.Social.FeedSubscription>().Match(s => s.FeedActorURI == actor.ActorURI).ExecuteAnyAsync(token))
+					await Domain.Social.FeedFollows.Sync(_jobs, token);
+			}
 			if (_featured != default)
 				await _featured.Sync(actor, token);
 			return JobOutcome.Done;
@@ -64,31 +71,33 @@ namespace PrivaPub.Federation.Actors
 
 		// only from the actor's own server, as everything we believe about it: its total, and the ids it lists when asked
 		// (inline, or on its first page)
-		async Task<(int? Total, List<string> Items)> Read(ForeignAvatar actor, string collection, bool items, CancellationToken token)
+		async Task<(int? Total, List<string> Items, bool Listed)> Read(ForeignAvatar actor, string collection, bool items, CancellationToken token)
 		{
 			var listed = new List<string>();
 			if (string.IsNullOrEmpty(collection) || !Origin.Same(collection, actor.ActorURI))
-				return (default, listed);
+				return (default, listed, false);
 			using var scope = HttpScope.For("collection");
 			using var fetched = await _remoteActors.FetchObject(collection, token);
 			if (fetched == default || fetched.Root.ValueKind != System.Text.Json.JsonValueKind.Object)
-				return (default, listed);
+				return (default, listed, false);
 			int? total = fetched.Root.TryGetProperty("totalItems", out var counted) && counted.TryGetInt32(out var count) && count >= 0 ? count : default;
 			if (!items)
-				return (total, listed);
+				return (total, listed, true);
 			var document = System.Text.Json.Nodes.JsonNode.Parse(fetched.Root.GetRawText());
 			var page = document["orderedItems"] ?? document["items"] ?? document["first"]?["orderedItems"] ?? document["first"]?["items"];
 			if (page == default && ActivityJson.Id(document["first"]) is { } first && Origin.Same(first, actor.ActorURI))
 			{
 				using var next = await _remoteActors.FetchObject(first, token);
-				var nextPage = next == default ? default : System.Text.Json.Nodes.JsonNode.Parse(next.Root.GetRawText());
+				if (next == default)
+					return (total, listed, false);
+				var nextPage = System.Text.Json.Nodes.JsonNode.Parse(next.Root.GetRawText());
 				page = nextPage?["orderedItems"] ?? nextPage?["items"];
 			}
 			if (page is System.Text.Json.Nodes.JsonArray array)
 				listed = array.Select(ActivityJson.Id)
 					.Where(id => Uri.TryCreate(id, UriKind.Absolute, out var uri) && uri.Scheme is "https" or "http")
 					.Distinct(StringComparer.Ordinal).Take(MaxFeedCommunities).ToList();
-			return (total, listed);
+			return (total, listed, true);
 		}
 	}
 }

PrivaPub/Federation/Actors/LocalActorService.cs

@@ -51,7 +51,7 @@ namespace PrivaPub.Federation.Actors
 		public string Wall => $"{Uri}/graffiti";
 		public bool HasWall => Kind == LocalActorKind.Person && !IsCircle && IsFederated;
 		// the server's own actors (the instance actor, the reporter): nobody follows, mentions or looks them up as accounts
-		public bool IsServerActor => Kind is LocalActorKind.Application or LocalActorKind.Reporter;
+		public bool IsServerActor => Kind is LocalActorKind.Application or LocalActorKind.Reporter or LocalActorKind.Reader;
 		public string Flock => $"{Uri}/flock";
 		public string Wardens => $"{Uri}/wardens";
 		public string SharedInbox => $"{BaseAddress}/human-centipede";
@@ -74,6 +74,7 @@ namespace PrivaPub.Federation.Actors
 		Task<LocalActor> FindByAddress(string address, CancellationToken token);
 		Task<LocalActor> GetInstanceActor(CancellationToken token);
 		Task<LocalActor> GetReporterActor(CancellationToken token);
+		Task<LocalActor> GetReaderActor(CancellationToken token);
 		Task<bool> IsUserNameTaken(string userName, CancellationToken token);
 		Task<bool> TryReserveUserName(string userName, LocalActorKind kind, string ownerId, CancellationToken token);
 		LocalActor FromAvatar(Avatar avatar);
@@ -89,13 +90,17 @@ namespace PrivaPub.Federation.Actors
 		// the anonymous Service that carries this server's reports to Lemmy, which takes no report from an Application
 		// (owner decision 2026-10-06): one actor for the server, never one per persona
 		public const string ReporterUserName = "privapub_reports";
+		// the anonymous Service that follows the communities of the feeds personas read, so no community learns which persona
+		// reads it (owner decision 2026-10-07); a Service, since Lemmy takes a follow from no Application
+		public const string ReaderUserName = "privapub_feeds";
 
 		public static bool IsServerActorName(string userName) =>
-			string.Equals(userName, InstanceUserName, StringComparison.OrdinalIgnoreCase) || string.Equals(userName, ReporterUserName, StringComparison.OrdinalIgnoreCase);
+			string.Equals(userName, InstanceUserName, StringComparison.OrdinalIgnoreCase) || string.Equals(userName, ReporterUserName, StringComparison.OrdinalIgnoreCase)
+			|| string.Equals(userName, ReaderUserName, StringComparison.OrdinalIgnoreCase);
 
 		static readonly HashSet<string> ReservedByInstance = new(StringComparer.Ordinal)
 		{
-			InstanceUserName, ReporterUserName, "admin", "administrator", "root", "system", "support", "help", "moderator", "mod",
+			InstanceUserName, ReporterUserName, ReaderUserName, "admin", "administrator", "root", "system", "support", "help", "moderator", "mod",
 			"abuse", "postmaster", "webmaster", "hostmaster", "security", "noreply", "no_reply", "null", "undefined"
 		};
 
@@ -103,6 +108,7 @@ namespace PrivaPub.Federation.Actors
 		readonly IOptionsMonitor<AppConfiguration> _appConfiguration;
 		InstanceActor _instanceActor;
 		ReporterActor _reporterActor;
+		ReaderActor _readerActor;
 
 		public LocalActorService(DbEntities dbEntities, IOptionsMonitor<AppConfiguration> appConfiguration)
 		{
@@ -121,6 +127,8 @@ namespace PrivaPub.Federation.Actors
 				return await GetInstanceActor(token);
 			if (userName == ReporterUserName)
 				return await GetReporterActor(token);
+			if (userName == ReaderUserName)
+				return await GetReaderActor(token);
 
 			var avatar = await _dbEntities.Avatars
 				.Match(a => a.UserName == userName && !a.DeletionAt.HasValue)
@@ -158,6 +166,8 @@ namespace PrivaPub.Federation.Actors
 					return group == default ? default : FromGroup(group);
 				case LocalActorKind.Reporter:
 					return await GetReporterActor(token);
+				case LocalActorKind.Reader:
+					return await GetReaderActor(token);
 				default:
 					return await GetInstanceActor(token);
 			}
@@ -221,6 +231,36 @@ namespace PrivaPub.Federation.Actors
 			};
 		}
 
+		public async Task<LocalActor> GetReaderActor(CancellationToken token)
+		{
+			var reader = _readerActor ??= await LoadReaderActor(token);
+
+			return new LocalActor
+			{
+				Id = reader.ID,
+				Kind = LocalActorKind.Reader,
+				UserName = ReaderUserName,
+				Name = $"Feeds read on {new Uri(BaseAddress).Host}",
+				Summary = "It follows the communities in the feeds this PrivaPub server's people read; it never names who reads them.",
+				PrivateKeyPem = reader.PrivateKey,
+				PublicKeyPem = reader.PublicKey,
+				Discoverable = false,
+				Published = reader.CreationDate,
+				BaseAddress = BaseAddress
+			};
+		}
+
+		async Task<ReaderActor> LoadReaderActor(CancellationToken token)
+		{
+			var reader = await _dbEntities.ReaderActors.Sort(r => r.CreationDate, Order.Ascending).ExecuteFirstAsync(token);
+			if (reader != default)
+				return reader;
+			var (privateKey, publicKey) = Keys.NewKeyPair();
+			reader = new ReaderActor { PrivateKey = privateKey, PublicKey = publicKey };
+			await DB.Default.SaveAsync(reader, token);
+			return reader;
+		}
+
 		async Task<ReporterActor> LoadReporterActor(CancellationToken token)
 		{
 			var reporter = await _dbEntities.ReporterActors.Sort(r => r.CreationDate, Order.Ascending).ExecuteFirstAsync(token);

PrivaPub/Federation/Controllers/PeasantsController.cs

@@ -532,8 +532,8 @@ namespace PrivaPub.Federation.Controllers
 			if (HttpMethods.IsGet(Request.Method))
 				Response.Headers.Vary = "Accept";
 			// SecureMode asks every reader of ActivityPub documents for a signature, except for the server's own actors (the
-			// instance actor, the reporter), whose keys peers need first, and except for browsers, which only get redirected to
+			// instance actor, the reporter, the reader of feeds), whose keys peers need first, and except for browsers, which
-			// the public pages
+			// only get redirected to the public pages
 			if (_federation.CurrentValue.SecureMode && HttpMethods.IsGet(Request.Method) && !WantsHtml() && Request.Path.Value != "/"
 				&& !LocalActorService.IsServerActorName(context.RouteData.Values["actor"] as string)
 				&& await _fetches.Requester(Request, HttpContext.RequestAborted) == default)

PrivaPub/Federation/Inbox/Arrival.cs

@@ -67,6 +67,7 @@ namespace PrivaPub.Federation.Inbox
 					LocalActorKind.Group when !local.IsCircle => "group",
 					LocalActorKind.Application => "application",
 					LocalActorKind.Reporter => "reporter",
+					LocalActorKind.Reader => "reader",
 					_ => default
 				};
 		}

PrivaPub/Federation/Outbox/DeliveryService.cs

@@ -182,6 +182,7 @@ namespace PrivaPub.Federation.Outbox
 					{ Kind: LocalActorKind.Person } => "person",
 					{ Kind: LocalActorKind.Group } => "group",
 					{ Kind: LocalActorKind.Reporter } => "reporter",
+					{ Kind: LocalActorKind.Reader } => "reader",
 					_ => "application"
 				},
 				Signature = "cavage:rsa-sha256"

PrivaPub/Federation/Rendering/ActivityPubRenderer.cs

@@ -126,7 +126,7 @@ namespace PrivaPub.Federation.Rendering
 				{
 					LocalActorKind.Group => "Group",
 					LocalActorKind.Application => "Application",
-					LocalActorKind.Reporter => "Service",
+					LocalActorKind.Reporter or LocalActorKind.Reader => "Service",
 					_ when actor.IsBot => "Service",
 					_ => "Person"
 				},

PrivaPub/Infrastructure/Data/Indexes.cs

@@ -26,6 +26,7 @@ namespace PrivaPub.Infrastructure.Data
 			await Plain<Post>(token, p => p.WallURI, p => p.ID);//a persona's wall (FEP-400e)
 			await Plain<Post>(token, p => p.ConversationId, p => p.ID);
 			await Plain<Post>(token, p => p.InReplyToURI);
+			await Plain<Post>(token, p => p.AudienceURI, p => p.ID);//a feed's timeline: the posts of its communities
 			// who boosted what: a persona's boosts of the posts a page shows were a scan of every post under load
 			// (tools/pasture/load.sh), and a post's boosts and replies are read for its counts and context
 			await Plain<Post>(token, p => p.AuthorAccountId, p => p.ReblogOfPostId);
@@ -167,6 +168,9 @@ namespace PrivaPub.Infrastructure.Data
 			await Plain<ObjectRecord>(token, r => r.PostId);
 			await Unique<DeletedObject>(d => d.ObjectURI, Builders<DeletedObject>.Filter.Gt(d => d.ObjectURI, ""), token);
 			await DB.Default.Index<DeletedObject>().Key(d => d.DeletedAt, KeyType.Ascending).Option(o => o.ExpireAfter = TombstoneLifetime).CreateAsync(token);
+			await DB.Default.Index<FeedSubscription>().Key(s => s.AvatarId, KeyType.Ascending).Key(s => s.FeedActorURI, KeyType.Ascending)
+				.Option(o => o.Unique = true).CreateAsync(token);
+			await Plain<FeedSubscription>(token, s => s.FeedActorURI);
 			await Unique<ThreadCollection>(c => c.URI, Builders<ThreadCollection>.Filter.Gt(c => c.URI, ""), token);
 			await DB.Default.Index<ThreadCollection>().Key(c => c.ReadAt, KeyType.Ascending).Option(o => o.ExpireAfter = ThreadCollectionLifetime).CreateAsync(token);
 			await DB.Default.Index<Downvote>().Key(d => d.PostId, KeyType.Ascending).Key(d => d.ActorURI, KeyType.Ascending).Option(o => o.Unique = true).CreateAsync(token);

PrivaPub/Infrastructure/Data/Migrations/_017_the_reader_has_its_name.cs

@@ -0,0 +1,24 @@
+using MongoDB.Entities;
+
+using PrivaPub.Federation.Actors;
+using PrivaPub.Models.Federation;
+using PrivaPub.Models.User;
+
+namespace PrivaPub.Infrastructure.Data.Migrations
+{
+	// the feeds reader's name (LocalActorService.ReaderUserName) is the server's, as the reporter's is: a persona or group
+	// already holding it would be hidden behind the reader, so the upgrade stops and says so
+	public class _017_the_reader_has_its_name : IMigration
+	{
+		public async Task UpgradeAsync()
+		{
+			var held = await DB.Default.Find<ReservedName>().Match(r => r.Name == LocalActorService.ReaderUserName).ExecuteFirstAsync();
+			if (held is { OwnerKind: LocalActorKind.Reader })
+				return;
+			if (held != default)
+				throw new InvalidOperationException(
+					$"The name {LocalActorService.ReaderUserName} belongs to a {held.OwnerKind} ({held.OwnerId}); rename it before upgrading");
+			await DB.Default.SaveAsync(new ReservedName { Name = LocalActorService.ReaderUserName, OwnerKind = LocalActorKind.Reader });
+		}
+	}
+}

PrivaPub/Middleware/SocialPubConfigurations.cs

@@ -120,6 +120,7 @@ namespace PrivaPub.Middleware
 				.AddSingleton<IJobHandler, PollRefreshJob>()
 				.AddSingleton<IJobHandler, RecoveryJob>()
 				.AddSingleton<IJobHandler, Federation.Actors.AccountCountsJob>()
+				.AddSingleton<IJobHandler, Domain.Social.FeedSyncJob>()
 				.AddSingleton<IJobHandler, Federation.Actors.OutboxBackfill>()
 				.AddSingleton<IJobHandler, Federation.Actors.FollowingSynchronization>()
 				.AddSingleton<IJobHandler, PollCloseJob>()
@@ -136,6 +137,7 @@ namespace PrivaPub.Middleware
 				.AddSingleton<IJobHandler, DeliveryJobHandler>()
 				.AddHostedService<JobWorker>()
 				.AddHostedService<Domain.Social.FollowResender>()
+				.AddHostedService<Domain.Social.FeedReader>()
 				.AddSingleton<Federation.Relays.IRelays, Federation.Relays.Relays>()
 				.AddHostedService<Federation.Relays.RelaySubscriber>();
 		}
@@ -234,6 +236,7 @@ namespace PrivaPub.Middleware
 				.AddTransient<IRelationshipService, RelationshipService>()
 				.AddTransient<IReportService, ReportService>()
 				.AddTransient<IFollowService, FollowService>()
+				.AddTransient<IFeedFollows, FeedFollows>()
 				.AddTransient<ITimelineService, TimelineService>()
 				.AddSingleton<AppConfigurationService>()
 				.AddHttpContextAccessor()

PrivaPub/Models/Federation/Follower.cs

@@ -19,6 +19,7 @@ namespace PrivaPub.Models.Federation
 		Person,
 		Group,
 		Application,
-		Reporter//the anonymous Service that carries reports to Lemmy (LocalActorService.ReporterUserName)
+		Reporter,//the anonymous Service that carries reports to Lemmy (LocalActorService.ReporterUserName)
+		Reader//the anonymous Service that follows the communities of the feeds personas read (LocalActorService.ReaderUserName)
 	}
 }

PrivaPub/Models/Federation/ReaderActor.cs

@@ -0,0 +1,12 @@
+using MongoDB.Entities;
+
+namespace PrivaPub.Models.Federation
+{
+	// the server's anonymous reader of feeds (LocalActorService.ReaderUserName), its keys
+	public class ReaderActor : Entity
+	{
+		public string PrivateKey { get; set; }
+		public string PublicKey { get; set; }
+		public DateTime CreationDate { get; set; } = DateTime.UtcNow;
+	}
+}

PrivaPub/Models/Jobs/Job.cs

@@ -38,7 +38,8 @@ namespace PrivaPub.Models.Jobs
 		SynchronizeFollowing,
 		ProcessMedia,
 		ExportArchive,
-		ImportArchive
+		ImportArchive,
+		SyncFeeds
 	}
 
 	public enum JobState

PrivaPub/Models/Social/FeedSubscription.cs

@@ -0,0 +1,14 @@
+using MongoDB.Entities;
+
+namespace PrivaPub.Models.Social
+{
+	// a persona reading a feed elsewhere (Lemmy's multi-community, PieFed's feed): the server's reader follows the feed's
+	// communities, never the persona (owner decision 2026-10-07)
+	public class FeedSubscription : Entity
+	{
+		public string AvatarId { get; set; }
+		public string FeedActorURI { get; set; }
+		public string FeedAccountId { get; set; }//ForeignAvatar.ID
+		public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+	}
+}

PrivaPub/Models/Social/Following.cs

@@ -4,7 +4,8 @@ namespace PrivaPub.Models.Social
 {
 	public class Following : Entity
 	{
-		public string AvatarId { get; set; }//the local follower
+		public string AvatarId { get; set; }//the local follower: a persona, or the server's reader of feeds (FollowerKind)
+		public PrivaPub.Models.Federation.LocalActorKind? FollowerKind { get; set; }//null for a persona
 		public string TargetActorURI { get; set; }
 		public string TargetAccountId { get; set; }//Avatar.ID, Group.ID or ForeignAvatar.ID
 		public bool TargetIsLocal { get; set; }

PrivaPub/Services/RootRemoval.cs

@@ -69,6 +69,8 @@ namespace PrivaPub.Services
 				await DB.Default.DeleteAsync<Models.Social.PersonaList>(l => l.AvatarId == avatar.ID);
 				await DB.Default.DeleteAsync<Models.Social.PersonaFilter>(f => f.AvatarId == avatar.ID);
 				await DB.Default.DeleteAsync<Models.Social.FollowedTag>(t => t.AvatarId == avatar.ID);
+				// (the reader of feeds stops following what nobody reads any more at its next round)
+				await DB.Default.DeleteAsync<Models.Social.FeedSubscription>(s => s.AvatarId == avatar.ID);
 				// nothing of it publishes later, and none of its files stays served: its posts' media, its pictures and
 				// what its scheduled posts held
 				await DB.Default.DeleteAsync<Models.Social.ScheduledStatus>(s => s.AvatarId == avatar.ID);

PrivaPub/StaticServices/DbEntities.cs

@@ -34,6 +34,7 @@ namespace PrivaPub.StaticServices
 		public Find<Delivery> Deliveries { get { return DB.Default.Find<Delivery>(); } }
 		public Find<InstanceActor> InstanceActors { get { return DB.Default.Find<InstanceActor>(); } }
 		public Find<ReporterActor> ReporterActors { get { return DB.Default.Find<ReporterActor>(); } }
+		public Find<ReaderActor> ReaderActors { get { return DB.Default.Find<ReaderActor>(); } }
 
 		public Find<Following> Followings { get { return DB.Default.Find<Following>(); } }
 		public Find<TimelineEntry> TimelineEntries { get { return DB.Default.Find<TimelineEntry>(); } }

docs/INTEROP.md

@@ -496,7 +496,10 @@ on a Page: pins live in `featured`, locks in `Lock`.
   shared inbox and the **instance's key** (`owner` is the instance, not the feed), text in `description` (not `summary`),
   the creator in `attributedTo`, and `following`, an unpaged `Collection` of the community ids with `totalItems`.
   Following one stays on the follower's server, which subscribes to each community itself (checked 2026-10-07 on
-  1.0.0-beta.2).
+  1.0.0-beta.2). PrivaPub does the same through its reader of feeds, the `Service` `privapub_feeds`: Lemmy 1.0 takes its
+  `Follow` and answers `Accept` about 30 s later, and announces the community's threads to it; the feed's thread and the
+  persona's own posts in a community of ours the feed holds show in the persona's feed timeline (checked live
+  2026-10-08).
 
 **Expects**
 - **Fetched documents:** Content-Type exactly one of `activity+json`, `activity+json; charset=utf-8`, or `ld+json` with
@@ -604,7 +607,10 @@ What it showed:
   - `Feed` actors at `/f/<name>` with their own key, inbox, `followers`, `moderators` (the owner) and `following` (the
     communities, a `Collection` with `totalItems`); PieFed's handle is `~name@host`. Following one is a `Follow` to the
     feed, after which its owner's server sends `Add`/`Remove` of communities, signed by the feed; each member also
-    subscribes to every community as themselves (`feed_auto_follow`). Its API creates feeds (`POST /api/alpha/feed`);
+    subscribes to every community as themselves (`feed_auto_follow`). Its API creates feeds (`POST /api/alpha/feed`).
+    PrivaPub follows a feed through its reader of feeds instead (owner decision 2026-10-07), sending the feed nothing:
+    PieFed takes the reader's `Follow` of each community at once and its threads reach the feed timeline, a moved
+    thread included (checked live 2026-10-08);
   - emoji Likes and `EmojiReact` count as upvotes.
 - **How PieFed formats what it sends us:**
   - It **chooses the format by our NodeInfo software name**, so keep that accurate.

docs/ROADMAP.md

@@ -221,6 +221,7 @@ and circles (see Owner decisions).
 | Reactions and votes | **Public, with a one-time notice.** The client tells each persona once, before its first reaction or vote, that these are public and visible as that persona. |
 | Who may quote a persona (default) | **Anyone, automatically**, as on Mastodon, for public and unlisted posts only. Each persona can change its default (followers only, or nobody) and each post can be changed; a granted quote can be revoked. Followers-only posts and DMs can never be quoted. |
 | Quote permission address | `/peasants/{name}/parrot-licences/{id}` |
+| Following a feed (2026-10-07) | **Through the server.** When a persona follows a feed (Lemmy's multi-community, PieFed's feed), the server's own account subscribes to each community in it, as Lemmy does, so the communities and the feed's owner learn only that someone on this server reads them, never which persona. The persona reads the feed's posts in a feed timeline of its own. A persona that comments in one of those communities is still seen there as itself. |
 
 ### Owner decisions on statistics (2026-10-03)
 
@@ -694,11 +695,15 @@ it, raw where it doesn't.
     ban of a persona refuses its posts there and shows as `blocked_by`), featured; `Warn` and `Resolve` (**done
     2026-10-07**: a warning becomes the persona's `moderation_warning` notification, believed from the community's
     server or its moderators collection, kept as `ForeignAvatar.ModeratorsURL`; a resolution is kept on our report);
-  - votes in and out; link posts; flairs (**done 2026-10-07**: Lemmy 1.0's `CommunityPostTag` and PieFed's
+  - votes in and out (**done 2026-10-07**: a persona's downvote is a `Dislike`, one vote a post, a changed vote sent as
+    the new one alone; a vote on a community's post goes to the community, and to its author only on another server; Mbin keeps a favourite apart from a vote, so
+    there a favourite stays after a switch to a downvote); link posts; flairs (**done 2026-10-07**: Lemmy 1.0's `CommunityPostTag` and PieFed's
     `lemmy:CommunityTag`, on posts and communities, described from the community's list, as `privapub.flairs`); `Feed`
     actors (**read 2026-10-07**: Lemmy 1.0's and PieFed's feeds resolve as accounts whose `/following` is their
-    communities, kept from the feed's `following` once a day; following one is refused for now, **owner decision
+    communities, kept from the feed's `following` once a day; **followed through the server since 2026-10-07** (owner
-    pending** on how); community polls; post `Move` (**done 2026-10-07**: PieFed's, relayed by the community the post
+    decision, see "Owner decisions on what PrivaPub reveals"): the Service `privapub_feeds` follows the communities of
+    every feed read here, reconciled when a persona follows or leaves one, when a feed's list is read again and every six
+    hours, and the persona reads `GET /api/v1/timelines/feed/:id`); community polls; post `Move` (**done 2026-10-07**: PieFed's, relayed by the community the post
     leaves, moves the post and its thread; checked live);
   - the outbound shape Lemmy requires;
   - communities we host announce to the author's own instance too: **done 2026-10-06** (its server's shared inbox,