Add iOS 27 remote media session and system player extension

MusicBridge/ContentView.swift

@@ -3,6 +3,7 @@ import SwiftUI
 struct ContentView: View {
     @ObservedObject var store: PlayerStore
     @ObservedObject var liveActivity: LiveActivityManager
+    @ObservedObject var systemPlayer: SystemPlayerManager
     @State private var showForget = false
 
     var body: some View {
@@ -20,6 +21,23 @@ struct ContentView: View {
                     } else {
                         PlayerView(store: store, coverSize: min(280, max(120, min(viewport.size.width - 40, viewport.size.height * 0.30))))
 
+                        if #available(iOS 27.0, *) {
+                            VStack(alignment: .leading, spacing: 10) {
+                                Button {
+                                    if systemPlayer.running { systemPlayer.end() }
+                                    else if let state = store.state, let connection = store.connection {
+                                        Task { await systemPlayer.start(state: state, connection: connection) }
+                                    }
+                                } label: {
+                                    Label(systemPlayer.running ? "Выключить системный пульт" : "Включить системный пульт iOS", systemImage: "play.rectangle")
+                                }.disabled(systemPlayer.busy || (!systemPlayer.running && (!store.connected || store.state?.hasSession != true)))
+                                if systemPlayer.busy { ProgressView() }
+                                Text("Музыка ПК в Пункте управления. Звук остаётся на компьютере.")
+                                    .font(.caption).foregroundStyle(.secondary)
+                                if let error = systemPlayer.error { Text(error).font(.caption).foregroundStyle(.red).textSelection(.enabled) }
+                            }.frame(maxWidth: .infinity, alignment: .leading).bridgeCard()
+                        }
+
                         VStack(alignment: .leading, spacing: 10) {
                             Button {
                                 if liveActivity.running { liveActivity.end() }