Add iOS 27 remote media session and system player extension

MusicBridge/PlayerStore.swift

@@ -15,6 +15,7 @@ final class PlayerStore: ObservableObject {
     @Published var incomingInvitation: String?
     let discovery = DiscoveryStore()
     var liveActivity: LiveActivityManager?
+    var systemPlayer: SystemPlayerManager?
     private(set) var receivedAt = Date()
     private var client: BridgeClient?
     private var runner: Task<Void, Never>?
@@ -170,6 +171,7 @@ final class PlayerStore: ObservableObject {
         connected = true
         status = "Подключено"
         liveActivity?.receive(snapshot)
+        if let connection { systemPlayer?.receive(snapshot, connection: connection) }
         guard artworkID != snapshot.artworkId else { return }
         artworkID = snapshot.artworkId
         artworkTask?.cancel()
@@ -248,6 +250,7 @@ final class PlayerStore: ObservableObject {
         do { try storage.delete() }
         catch { self.error = error.localizedDescription; return }
         liveActivity?.end()
+        systemPlayer?.end()
         stop()
         cancelPairing()
         needsPairing = false
@@ -273,6 +276,7 @@ final class PlayerStore: ObservableObject {
 
     private func revokeAccess() {
         liveActivity?.end()
+        systemPlayer?.end()
         stop()
         needsPairing = true
         status = "Нужно повторное сопряжение"