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

tests/Paca.Tests/Mobile/MobileTextEncodingSanitizerGateTests.cs

@@ -0,0 +1,49 @@
+using System;
+using Paca.Mobile.Core;
+using Xunit;
+
+namespace Paca.Tests.Mobile;
+
+/// <summary>
+/// 모바일 문자열 인코딩 정제 및 유니코드 복원 무결성 게이트 (Gate 511 ~ Gate 515)
+/// - JS Evaluate 결과 JSON 유니코드 이스케이프(\uXXXX) 디코딩
+/// - URL 퍼센트 인코딩(%ED%95%9C%EA%B8%80) 사용자 가독 디코딩
+/// - HTML 엔티티(&amp;, &quot;, &#39;, &lt;, &gt;) 복원
+/// </summary>
+public class MobileTextEncodingSanitizerGateTests
+{
+    [Theory]
+    [InlineData("\"\\uB124\\uC774\\uBC84\"", "네이버")]
+    [InlineData("\"\\uAD6C\\uAE00\"", "구글")]
+    [InlineData("\\uC720\\uD29C\\uBE0C", "유튜브")]
+    [InlineData("\"동영상 다운로더\"", "동영상 다운로더")]
+    [InlineData("null", "")]
+    [InlineData("", "")]
+    [InlineData(null, "")]
+    public void Gate511_JsStringDecoder_UnescapesUnicodeAndJsonQuotes(string? input, string expected)
+    {
+        var result = MobileTextEncodingSanitizer.CleanDecodedString(input);
+        Assert.Equal(expected, result);
+    }
+
+    [Theory]
+    [InlineData("https://www.google.com/search?q=%ED%85%8C%EC%8A%A4%ED%8A%B8", "https://www.google.com/search?q=테스트")]
+    [InlineData("https://m.naver.com/%ED%95%9C%EA%B8%80%EA%B2%80%EC%83%89", "https://m.naver.com/한글검색")]
+    [InlineData("paca://newtab", "paca://newtab")]
+    [InlineData("", "")]
+    [InlineData(null, "")]
+    public void Gate512_FormatUrlForDisplay_DecodesPercentEncodingForHumanReadability(string? input, string expected)
+    {
+        var result = MobileTextEncodingSanitizer.FormatUrlForDisplay(input);
+        Assert.Equal(expected, result);
+    }
+
+    [Theory]
+    [InlineData("&quot;안녕&quot; &amp; &lt;세상&gt;", "\"안녕\" & <세상>")]
+    [InlineData("&#39;PACA&#39; &#x26; 브라우저", "'PACA' & 브라우저")]
+    public void Gate513_HtmlEntityDecoding_RestoresEntities(string input, string expected)
+    {
+        var result = MobileTextEncodingSanitizer.CleanDecodedString(input);
+        Assert.Equal(expected, result);
+    }
+}