Pause the school on warning notices until the owner dismisses them.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/HSchool.Protocol/Messages.cs

@@ -84,7 +84,7 @@ public sealed record ServerMapSnapshotMessage(int SchoolId, IReadOnlyList<MapSna
 /// <summary>Jump empty nights, weekends and holidays. The server re-checks the conditions.</summary>
 public readonly record struct ClientSkipEmptyMessage;
 
-/// <summary>Closes one notice by id. Info is not stored; pausing dismiss is phase 65.</summary>
+/// <summary>Closes one notice by id. Info is not stored; pausing dismiss is owner-only.</summary>
 public readonly record struct ClientDismissNoticeMessage(uint Id);
 
 /// <summary>Wire values for <see cref="ServerNoticeMessage.Severity"/>.</summary>
@@ -97,7 +97,7 @@ public static class NoticeSeverity
 
 /// <summary>
 /// One school event for open clients. <paramref name="PersonId"/> is 0 when nobody is in frame.
-/// Info toasts are not replayed on OpenSchool.
+/// Info toasts are not replayed on OpenSchool. Pausing notices are saved and resent on Open.
 /// </summary>
 public readonly record struct ServerNoticeMessage(
     uint Id,