adjust visibility flags, improve chat functionality, bump submodules

LightlessSync/Services/Chat/ChatModels.cs

@@ -3,10 +3,21 @@ using LightlessSync.API.Dto.Chat;
 namespace LightlessSync.Services.Chat;
 
 public sealed record ChatMessageEntry(
-    ChatMessageDto Payload,
+    ChatMessageDto? Payload,
     string DisplayName,
     bool FromSelf,
-    DateTime ReceivedAtUtc);
+    DateTime ReceivedAtUtc,
+    ChatSystemEntry? SystemMessage = null)
+{
+    public bool IsSystem => SystemMessage is not null;
+}
+
+public enum ChatSystemEntryType
+{
+    ZoneSeparator
+}
+
+public sealed record ChatSystemEntry(ChatSystemEntryType Type, string? ZoneName);
 
 public readonly record struct ChatChannelSnapshot(
     string Key,