Lists: made on /lists, read as a tab of the feed

A persona's lists (PrivaPub's /api/v1/lists): made, renamed, given a
replies policy and made exclusive on /lists, filled from the accounts it
follows (accounts/search?following=true), and read as the feed's Lists tab.
A followed account's profile has a Lists menu to put it in or take it out.
ListService does the calls; the e2e tests check each step against
PrivaPub's own answer.

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

Services/TimelineService.cs

@@ -12,9 +12,9 @@ using PrivaPub.ClientModels.Post;
 
 namespace decePubClient.Services
 {
-	/// <summary>What a feed shows: its kind, and the group, hashtag or position some kinds need.</summary>
+	/// <summary>What a feed shows: its kind, and the group, hashtag, list or position some kinds need.</summary>
 	public sealed record FeedQuery(TimelineType Type, string PersonaId, string GroupId = default, bool IsCommunity = false, string Tag = default,
-		double? Latitude = default, double? Longitude = default);
+		double? Latitude = default, double? Longitude = default, string ListId = default);
 
 	/// <summary>
 	/// Pages of every feed the client shows, as FeedPosts. Mastodon lists page through max_id (older) and min_id (newer)
@@ -41,6 +41,8 @@ namespace decePubClient.Services
 					TimelineType.Bookmarks => await Statuses(APIs.Mastodon.GET_Bookmarks, [], maxId, minId, cancellationToken),
 					TimelineType.Tag when query.Tag is { Length: > 0 } tag =>
 						await Statuses(APIs.Mastodon.GET_M_TagTimeline(tag), [], maxId, minId, cancellationToken),
+					TimelineType.Lists when query.ListId is { Length: > 0 } listId =>
+						await Statuses(APIs.Mastodon.GET_M_ListTimeline(listId), [], maxId, minId, cancellationToken),
 					TimelineType.Groups when query.GroupId is { Length: > 0 } groupId && query.IsCommunity =>
 						await Statuses(APIs.Mastodon.GET_M_AccountStatuses(groupId), [], maxId, minId, cancellationToken),
 					TimelineType.Groups when query.GroupId is { Length: > 0 } && maxId is null => await Circle(query, cancellationToken),