Summary Update.

RelayShared/Services/ChannelTransmissions.cs

@@ -1,19 +1,44 @@
 namespace RelayShared.Services;
 
+/// <summary>
+/// One row in the sidebar channel list. The server computes the permission-derived fields
+/// (CanPost, CanManage) per-user so the client never has to evaluate permissions itself.
+/// </summary>
 public sealed class ChannelItem
 {
+    /// <summary>Surreal record id (e.g. "channels:abc").</summary>
     public string ChannelId { get; set; } = string.Empty;
+
+    /// <summary>Sidebar display name ("general", "welcome", etc.).</summary>
     public string Name { get; set; } = string.Empty;
+
+    /// <summary>Drives icon and behavior: Text/Voice/File/Forum/Stage.</summary>
     public ChannelType Type { get; set; }
+
+    /// <summary>Sidebar category label (e.g. "General"). Empty groups fall under a default "Channels" header.</summary>
     public string Group { get; set; } = string.Empty;
+
+    /// <summary>Creation timestamp. Drives sidebar sort order (oldest → newest).</summary>
     public DateTime CreatedAt { get; set; }
+
+    /// <summary>True if the channel is announcement-style (welcome, files). Drives the 🔒 suffix in the sidebar.</summary>
     public bool IsReadOnly { get; set; }
+
+    /// <summary>Permission-resolved: can the receiving user send messages here. Drives input enable/disable.</summary>
     public bool CanPost { get; set; }
+
+    /// <summary>Permission-resolved: can the receiving user edit/delete this channel. Drives context-menu visibility.</summary>
     public bool CanManage { get; set; }
 }
 
+/// <summary>
+/// Server-to-client channel list. Sent in response to WsAction.GetChannels and broadcast
+/// to all sessions after every channel create / delete.
+/// </summary>
 public sealed class SocketChannelList
 {
     public SignalType Type { get; set; } = SignalType.ChannelList;
+
+    /// <summary>Channels the receiving user is allowed to view. Permission filtering happens server-side.</summary>
     public List<ChannelItem> Channels { get; set; } = [];
 }