feat: add mac node screen recording and ssh tunnel

apps/macos/Sources/Clawdis/NodeMode/MacNodeScreenCommands.swift

@@ -0,0 +1,12 @@
+import Foundation
+
+enum MacNodeScreenCommand: String, Codable, Sendable {
+    case record = "screen.record"
+}
+
+struct MacNodeScreenRecordParams: Codable, Sendable, Equatable {
+    var screenIndex: Int?
+    var durationMs: Int?
+    var fps: Double?
+    var format: String?
+}