Add post-grace peer recovery coordinator

src/app/mod.rs

@@ -888,6 +888,10 @@ fn update(state: &mut AppState, message: AppMessage) -> Task<AppMessage> {
                     state.ever_connected.remove(&id);
                     notify::play(Sound::PeerLeave, state.config.custom_sound_peer_leave.as_deref());
                 }
+                // Core-only recovery phase: presentation for this state lands in
+                // the separate UI follow-up. In particular, do not play the
+                // terminal ReconnectFailed chime here.
+                UiEvent::PeerRecoveryStarted { .. } => {}
                 UiEvent::PeerConnectionFailed { id } => {
                     state.peers.remove(&id);
                     state.audio_levels.remove(&id);