Peer list: real-time icon updates by publishing snapshots on connectivity checks; add unread message indicator (envelope) next to peers with unread DMs

bitchat/Services/BLEService.swift

@@ -2041,6 +2041,8 @@ final class BLEService: NSObject {
                 for peerID in disconnectedPeers {
                     self.delegate?.didDisconnectFromPeer(peerID)
                 }
+                // Publish snapshots so UnifiedPeerService updates connection/reachability icons
+                self.publishFullPeerData()
                 self.delegate?.didUpdatePeerList(currentPeerIDs)
             }
         }

bitchat/Views/MeshPeerList.swift

@@ -115,6 +115,14 @@ struct MeshPeerList: View {
 
                         Spacer()
 
+                        // Unread message indicator for this peer
+                        if !isMe, item.hasUnread {
+                            Image(systemName: "envelope.fill")
+                                .font(.system(size: 10))
+                                .foregroundColor(.yellow)
+                                .help("New messages")
+                        }
+
                         if !isMe {
                             Button(action: { onToggleFavorite(peer.id) }) {
                                 Image(systemName: (peer.favoriteStatus?.isFavorite ?? false) ? "star.fill" : "star")