P7: Lemmy's Warn and Resolve{Flag}

- A Warn from a community's moderator about a persona's own post there becomes that persona's moderation_warning
  notification (Mastodon's AccountWarning, with the reason and the post), believed from the community's own server or
  from an account the community's moderators collection lists. Remote communities keep that collection's address
  (attributedTo) as ForeignAvatar.ModeratorsURL; it is read only when a warning needs it.
- A Resolve{Flag} for one of our reports (`/grunts/flag-<report id>`) is kept as the report's remote resolution when it
  comes from the server holding what was reported, or the community it was reported to; our own moderators'
  resolution is never replaced. The moderators' report list shows both.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012CzABvBkbcFqoHdmi8b9WB

PrivaPub/Models/Social/Notification.cs

@@ -12,6 +12,7 @@ namespace PrivaPub.Models.Social
 		public string DedupeKey { get; set; }
 		public string Emoji { get; set; }//a reaction's emoji
 		public string EmojiURL { get; set; }
+		public string Text { get; set; }//a moderation warning's reason
 		public bool IsRead { get; set; }
 		public bool Filtered { get; set; }//held back by the persona's notification policy, in a NotificationRequest
 		public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
@@ -27,6 +28,7 @@ namespace PrivaPub.Models.Social
 		Update,
 		Poll,
 		Reaction,
-		Quote
+		Quote,
+		ModerationWarning
 	}
 }

PrivaPub/Models/Social/Relationships.cs

@@ -78,5 +78,7 @@ namespace PrivaPub.Models.Social
 		public string ResolvedBy { get; set; }
 		public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
 		public DateTime? ResolvedAt { get; set; }
+		public DateTime? RemoteResolvedAt { get; set; }//the server holding the reported content says it dealt with it (Lemmy's Resolve{Flag})
+		public string RemoteResolvedBy { get; set; }
 	}
 }

PrivaPub/Models/User/Avatar.cs

@@ -77,6 +77,7 @@ namespace PrivaPub.Models.User
 		public string InboxURL { get; set; }
 		public string OutboxURL { get; set; }
 		public string FeaturedURL { get; set; }//featured: the posts it pins
+		public string ModeratorsURL { get; set; }//a community's attributedTo (Lemmy, PieFed, Mbin): the collection of its moderators
 		public List<AssertionKey> AssertionKeys { get; set; } = new();//its Ed25519 keys (FEP-521a), which prove what it sends (FEP-8b32)
 		public string WallURL { get; set; }//sm:wall (FEP-400e): where others write to it, Smithereen's walls
 		public string MovedToURL { get; set; }