R5 the server's own settings: instance, rules, announcements, relays, media limits, the staff's log

A singleton ServerSettings (title, descriptions, contact, thumbnail, privacy policy, terms, rules, relays, media
overrides, PublishActivity), cached by InstanceSettings and read by the instance API, NodeInfo, the instance actor, the
web pages and the mailer; its defaults are the old literals, so nothing changes until an administrator edits.
/clientapi/admin/settings (and /thumbnail), /announcements, /relays for administrators; /clientapi/moderator/log, the
staff's log (AdminAction, written by domain blocks, backups, settings and the CLI; no IP, never a root paired with its
personas). The Mastodon API's rules, extended description, privacy policy, terms of service, domain blocks (Published,
Obfuscate), announcements (dismiss, reactions, streaming) and activity (only when published). Reports carry rule ids.
Media overrides clamped to hard caps. Relays named by the settings reconcile next to the configured ones.

Verified: interop.sh instance accounts relay with mastodon, relay, aoderelay and mailpit, 119 passed.

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

PrivaPub/Services/Mailer.cs

@@ -19,14 +19,19 @@ namespace PrivaPub.Services
 	public class Mailer : IMailer
 	{
 		readonly IOptionsMonitor<AppConfiguration> _app;
+		readonly Domain.Instance.IInstanceSettings _settings;
 
-		public Mailer(IOptionsMonitor<AppConfiguration> app) => _app = app;
+		public Mailer(IOptionsMonitor<AppConfiguration> app, Domain.Instance.IInstanceSettings settings)
+		{
+			_app = app;
+			_settings = settings;
+		}
 
 		public async Task Send(string to, string subject, string body, CancellationToken token)
 		{
 			var email = _app.CurrentValue.EmailConfiguration;
 			var message = new MimeMessage();
-			message.From.Add(new MailboxAddress("PrivaPub", email.SmtpUsername));
+			message.From.Add(new MailboxAddress(_settings.Current.Title, email.SmtpUsername));//the server's name, as its administrator set it
 			message.To.Add(MailboxAddress.Parse(to));
 			message.Subject = subject;
 			message.Body = new TextPart("plain") { Text = body };

PrivaPub/Services/RootRemoval.cs

@@ -69,6 +69,9 @@ 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);
+				// what it did with the server's announcements, kept for it alone
+				await DB.Default.DeleteAsync<Models.Social.AnnouncementRead>(r => r.AvatarId == avatar.ID);
+				await DB.Default.DeleteAsync<Models.Social.AnnouncementReaction>(r => r.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