feat(ads/seo/release): v1.2.0 with live Google Ads, isolated ad profile, ads.txt, and SEO/AEO/GEO optimization

tests/Paca.Tests/Server/ServerLanBeaconGateTests.cs

@@ -0,0 +1,58 @@
+using System.Net.Sockets;
+using System.Threading.Tasks;
+using Paca.Core.Config;
+using Paca.Mobile.Core;
+using Paca.Server;
+using Xunit;
+
+namespace Paca.Tests.Server;
+
+public class ServerLanBeaconGateTests
+{
+    [Fact]
+    public void Gate238_AppConfig_RemoteAccessPort_Default_52100_Audit()
+    {
+        var config = new AppConfig();
+        Assert.Equal(52100, config.RemoteAccessPort);
+
+        var opts = new ServerOptions();
+        Assert.True(opts.EnableLanBeacon);
+    }
+
+    [Fact]
+    public async Task Gate237_ServerHost_Starts_And_Stops_LanBeaconResponder_Correctly()
+    {
+        // 고유 UDP 포트를 사용하여 병렬 테스트 충돌 방지
+        int testUdpPort = 52199;
+        var options = new ServerOptions
+        {
+            Port = 0,
+            Token = "test_token_1234",
+            EnableLanBeacon = true,
+            BeaconPort = testUdpPort,
+            DeviceName = "TestHostPC"
+        };
+
+        await using var host = await ServerHost.StartAsync(options);
+        Assert.True(host.LanBeaconActive);
+
+        // UdpClient로 Ping을 보내고 Pong 응답 확인
+        using var client = new UdpClient();
+        var ping = LanDiscoveryMessage.CreatePing("TestMobileClient");
+        var pingBytes = System.Text.Encoding.UTF8.GetBytes(ping.ToPayload());
+        await client.SendAsync(pingBytes, pingBytes.Length, "127.0.0.1", testUdpPort);
+
+        var receiveTask = client.ReceiveAsync();
+        var completed = await Task.WhenAny(receiveTask, Task.Delay(2000));
+        Assert.Same(receiveTask, completed);
+
+        var response = await receiveTask;
+        var responseText = System.Text.Encoding.UTF8.GetString(response.Buffer);
+        var parsed = LanDiscoveryMessage.Parse(responseText);
+
+        Assert.NotNull(parsed);
+        Assert.Equal(LanDiscoveryMessageType.Pong, parsed.Type);
+        Assert.Equal("TestHostPC", parsed.DeviceName);
+        Assert.EndsWith($":{host.Port}", parsed.Endpoint);
+    }
+}