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

tests/Paca.Tests/Core/ProxyConfigurationManagerGateTests.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Net;
+using Paca.Mobile.Core;
+using Xunit;
+
+namespace Paca.Tests.Core;
+
+public class ProxyConfigurationManagerGateTests
+{
+    [Fact]
+    public void Gate285_ProxyConfigurationManager_ParsesHttpProxy_WithCredentials()
+    {
+        var raw = "http://myuser:mypass123@192.168.1.50:8080";
+        var config = ProxyConfigurationManager.Parse(raw);
+
+        Assert.NotNull(config);
+        Assert.Equal("192.168.1.50", config!.Host);
+        Assert.Equal(8080, config.Port);
+        Assert.Equal("http", config.Scheme);
+        Assert.Equal("myuser", config.Username);
+        Assert.Equal("mypass123", config.Password);
+    }
+
+    [Fact]
+    public void Gate286_ProxyConfigurationManager_BuildsWebProxy_WithBypassList()
+    {
+        var raw = "http://127.0.0.1:8888";
+        var bypassList = new[] { "localhost", "127.0.0.1", "*.local" };
+        var proxy = ProxyConfigurationManager.CreateWebProxy(raw, bypassList);
+
+        Assert.NotNull(proxy);
+        Assert.True(proxy!.IsBypassed(new Uri("http://localhost:5000/api")));
+        Assert.False(proxy.IsBypassed(new Uri("https://youtube.com/watch?v=123")));
+    }
+
+    [Fact]
+    public void Gate287_ProxyConfigurationManager_BuildsYtDlpArguments()
+    {
+        var raw = "http://127.0.0.1:8888";
+        var args = ProxyConfigurationManager.GetYtDlpProxyArg(raw);
+
+        Assert.Equal("--proxy \"http://127.0.0.1:8888\"", args);
+    }
+
+    [Fact]
+    public void Gate288_ProxyConfigurationManager_HandlesDisabledOrEmptyProxy()
+    {
+        Assert.Null(ProxyConfigurationManager.Parse(""));
+        Assert.Null(ProxyConfigurationManager.Parse(null));
+        Assert.Null(ProxyConfigurationManager.CreateWebProxy("", Array.Empty<string>()));
+        Assert.Equal(string.Empty, ProxyConfigurationManager.GetYtDlpProxyArg(""));
+    }
+}