ui: inform guests of restricted interfaces

crates/chattyness-user-ui/src/components/ws_client.rs

@@ -60,6 +60,8 @@ pub struct ChannelMemberInfo {
     pub guest_session_id: Option<uuid::Uuid>,
     /// The user's display name.
     pub display_name: String,
+    /// Whether this user is a guest (has the 'guest' tag).
+    pub is_guest: bool,
 }
 
 /// WebSocket error info for UI display.
@@ -240,6 +242,7 @@ pub fn use_channel_websocket(
                                 user_id: member.user_id,
                                 guest_session_id: member.guest_session_id,
                                 display_name: member.display_name.clone(),
+                                is_guest: member.is_guest,
                             };
                             callback.run(info);
                         }