R8 the Mastodon API made real: featured tags, endorsements, notes, notify and languages, suggestions, the direct stream

Featured tags per persona (/api/v1/featured_tags, suggestions, tags/:name/feature, accounts' featured tags, max 10),
listed at /tattoos as Hashtags and sent as Add/Remove{Hashtag} to followers on the featured collection, as Mastodon
sends them; remote accounts' tags received and read from featuredTags. Endorsements (pin/endorse) and private notes
(PersonaNote) kept per persona and never federated; the relationship's notifying, languages, endorsed and note, with
follow's notify (status notifications) and languages (home filter). Reading preferences set on /clientapi. Suggestions
v1/v2 with dismissals and staff picks, never the persona or a sibling. conversation events on the direct stream.
translate, annual reports and the admin API answer. New collections backed up and removed with their persona.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WpVCoDeM1qUTRp4fXQdfof

PrivaPub/Federation/Actors/ActorDocument.cs

@@ -24,6 +24,7 @@ namespace PrivaPub.Federation.Actors
 		public string Followers { get; init; }
 		public string Following { get; init; }
 		public string Featured { get; init; }
+		public string FeaturedTags { get; init; }
 		public string Wall { get; init; }
 		public string WebFinger { get; init; }//FEP-2c59: its handle, user@domain, where the domain is not its host's
 		public string SharedInbox { get; init; }
@@ -82,6 +83,7 @@ namespace PrivaPub.Federation.Actors
 				Followers = RemoteActorService.Text(root, "followers"),
 				Following = RemoteActorService.Text(root, "following"),
 				Featured = RemoteActorService.Text(root, "featured"),
+				FeaturedTags = RemoteActorService.Text(root, "featuredTags"),
 				Wall = RemoteActorService.Text(root, "wall") ?? RemoteActorService.Text(root, "sm:wall"),
 				WebFinger = RemoteActorService.Text(root, "webfinger")?.Replace("acct:", "", StringComparison.OrdinalIgnoreCase).TrimStart('@'),
 				SharedInbox = root.TryGetProperty("endpoints", out var endpoints) ? RemoteActorService.Text(endpoints, "sharedInbox") : default,