R8 the Mastodon API made real in decePub: featured tags, notify, languages, recommendations, notes, suggestions, the direct stream

A profile shows the hashtags an account features as chips opening their feed; under another account's header is what the
persona keeps of it for itself alone: for one it follows, a bell (follow with notify), the languages of its posts that
reach the home feed (follow with languages[]) and Recommend (endorsements, private here), and for any account a private
note saved on blur or with Save. Settings edits the persona's featured hashtags (added by name or from those used lately,
10 at most) and its reading preferences (/clientapi/avatar/private/preferences), which CascadingState keeps per persona
and the card applies to sensitive media and content warnings. A hashtag's tab features it on the profile. Explore has Who
to follow (/api/v2/suggestions, dismissed for good after asking); Administration has Staff picks. The Direct tab follows
the direct stream's conversation events; status notifications show the post. The follows CSV carries notify and languages.

Verified: Release build, 0 errors (the 3 warnings were there before). Not run against PrivaPub or in the pasture.

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

Models/Types/ExpandMedia.cs

@@ -0,0 +1,30 @@
+namespace decePubClient.Models.Types
+{
+	/// <summary>How the persona's cards show media (Mastodon's reading:expand:media, set through /clientapi): Default hides
+	/// what its author marked sensitive, ShowAll shows everything, HideAll hides every picture, video and sound behind a
+	/// button.</summary>
+	public enum ExpandMedia
+	{
+		Default = 1,
+		ShowAll,
+		HideAll
+	}
+
+	/// <summary>ExpandMedia as PrivaPub names it ("default", "show_all", "hide_all").</summary>
+	public static class ExpandMediaModes
+	{
+		public static ExpandMedia Of(string mode) => mode switch
+		{
+			"show_all" => ExpandMedia.ShowAll,
+			"hide_all" => ExpandMedia.HideAll,
+			_ => ExpandMedia.Default
+		};
+
+		public static string Name(ExpandMedia mode) => mode switch
+		{
+			ExpandMedia.ShowAll => "show_all",
+			ExpandMedia.HideAll => "hide_all",
+			_ => "default"
+		};
+	}
+}