fix(mac): fix UI not showing connected state due to struct equality check

Since lastSeen was added to DiscoveredDevice, the synthesized Equatable check failed when the array's lastSeen was updated but the connectedDevice's lastSeen wasn't. Changed to compare IP addresses instead.

Author: jayfunc

Mac/CarpeCast-Swift/ContentView.swift

@@ -20,7 +20,7 @@ struct DevicesView: View {
                 }
                 .frame(maxWidth: .infinity, maxHeight: .infinity)
             } else {
-                List(networkManager.discoveredDevices, id: \.self) { device in
+                List(networkManager.discoveredDevices, id: \.ip) { device in
                     HStack {
                         VStack(alignment: .leading) {
                             Text(device.name).fontWeight(.bold)
@@ -29,7 +29,7 @@ struct DevicesView: View {
                                 .foregroundColor(.secondary)
                         }
                         Spacer()
-                        if networkManager.connectedDevice == device {
+                        if networkManager.connectedDevice?.ip == device.ip {
                             Text(localized("Connected")).foregroundColor(.green)
                             Button(localized("Disconnect")) {
                                 networkManager.disconnect()