Clear pending retry resolution on peer disconnect

A private-media policy resolution whose completion is dropped by
transport teardown (BLEService messageQueue deallocation guard) left
its peersResolvingReconnectRetry entry in place, parking every future
reconnect-retry resolution for that peer until panic reset. Disconnect
now removes the entry; retained records survive and the next reconnect
starts a fresh resolution.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

bitchat/ViewModels/ChatMediaTransferCoordinator.swift

@@ -965,6 +965,16 @@ final class ChatMediaTransferCoordinator {
         )
     }
 
+    /// A policy resolution's completion can be dropped entirely when the
+    /// transport tears down mid-flight (BLEService's queue guards on a
+    /// deallocated self), which would leave the pending entry blocking every
+    /// future resolution for this peer. Disconnection invalidates the
+    /// resolution's premise anyway, so drop it; retained records stay and the
+    /// next reconnect starts a fresh resolution.
+    func peerDidDisconnect(_ peerID: PeerID) {
+        peersResolvingReconnectRetry.removeValue(forKey: peerID.toShort())
+    }
+
     /// Local fragment completion is not proof that the recipient reconstructed
     /// the file. Only a remote delivery/read receipt releases retry ownership.
     func confirmPrivateMediaDelivery(messageID: String) {

bitchat/ViewModels/ChatViewModel.swift

@@ -1773,6 +1773,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate, SynchronousMessage
 
         case .peerDisconnected(let peerID):
             transportEventCoordinator.didDisconnectFromPeerSynchronously(peerID)
+            mediaTransferCoordinator.peerDidDisconnect(peerID)
 
         case .peerListUpdated(let peers):
             peerListCoordinator.didUpdatePeerListSynchronously(peers)
@@ -1866,6 +1867,9 @@ final class ChatViewModel: ObservableObject, BitchatDelegate, SynchronousMessage
 
     func didDisconnectFromPeer(_ peerID: PeerID) {
         transportEventCoordinator.didDisconnectFromPeer(peerID)
+        Task { @MainActor [weak self] in
+            self?.mediaTransferCoordinator.peerDidDisconnect(peerID)
+        }
     }
 
     func didUpdatePeerList(_ peers: [PeerID]) {