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/Api/Mastodon/Entities/Entities.cs

@@ -410,6 +410,24 @@
 		public string Note { get; set; } = string.Empty;
 	}
 
+	// Mastodon's FeaturedTag: its count as a string and its last use as a day, as Mastodon's serializer writes them
+	public class FeaturedTagEntity
+	{
+		public string Id { get; set; }
+		public string Name { get; set; }
+		public string Url { get; set; }
+		public string StatusesCount { get; set; } = "0";
+		public string LastStatusAt { get; set; }
+	}
+
+	// Mastodon's v2 Suggestion: why (source, deprecated since 4.3, and sources) and whom
+	public class Suggestion
+	{
+		public string Source { get; set; }
+		public List<string> Sources { get; set; } = new();
+		public Account Account { get; set; }
+	}
+
 	public class Notification
 	{
 		public string Id { get; set; }