Add embedded VNC server with JWT auth, DXGI capture, and dashboard integration

client/vnc/server/server_darwin.go

@@ -0,0 +1,15 @@
+//go:build darwin && !ios
+
+package server
+
+func (s *Server) platformInit() {}
+
+// serviceAcceptLoop is not supported on macOS.
+func (s *Server) serviceAcceptLoop() {
+	s.log.Warn("service mode not supported on macOS, falling back to direct mode")
+	s.acceptLoop()
+}
+
+func (s *Server) platformSessionManager() virtualSessionManager {
+	return nil
+}