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/MobileOfflineLibraryDashboardGateTests.cs

@@ -0,0 +1,105 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using Paca.Mobile.Core;
+using Xunit;
+
+namespace Paca.Tests.Mobile;
+
+/// <summary>
+/// Gate 147 ~ 150: 모바일 오프라인 미디어 라이브러리 & 스토리지 대시보드 기계적 검증
+/// </summary>
+public class MobileOfflineLibraryDashboardGateTests
+{
+    [Fact]
+    public void Gate147_OfflineMediaItem_DisplayFormatting()
+    {
+        var item1 = new OfflineMediaItem(
+            Id: "media-1",
+            FileName: "RickRoll_4K.mp4",
+            SizeBytes: 104_857_600L, // 100 MB
+            LocalFilePath: "/data/user/0/com.paca.mobile/files/RickRoll_4K.mp4",
+            DownloadedAt: DateTimeOffset.UtcNow,
+            IsIntegrityVerified: true
+        );
+
+        Assert.Equal("100.0 MB", item1.DisplaySize);
+        Assert.True(item1.IsIntegrityVerified);
+
+        var item2 = new OfflineMediaItem(
+            Id: "media-2",
+            FileName: "LongVideo_HDR.mkv",
+            SizeBytes: 1_610_612_736L, // 1.5 GB
+            LocalFilePath: "/data/user/0/com.paca.mobile/files/LongVideo_HDR.mkv",
+            DownloadedAt: DateTimeOffset.UtcNow,
+            IsIntegrityVerified: true
+        );
+
+        Assert.Equal("1.5 GB", item2.DisplaySize);
+    }
+
+    [Fact]
+    public void Gate148_LocalStorageDashboard_Calculates_Usage_Percentages()
+    {
+        // 총 128 GB (137,438,953,472 B), 남은 용량 64 GB, Paca 사용 6.4 GB (5%)
+        long totalStorage = 128L * 1024 * 1024 * 1024;
+        long freeStorage = 64L * 1024 * 1024 * 1024;
+        long pacaStorage = (long)(totalStorage * 0.05); // 5%
+
+        var dashboard = LocalStorageDashboard.Calculate(totalStorage, freeStorage, pacaStorage);
+
+        Assert.Equal(5.0, Math.Round(dashboard.PacaUsagePercent, 1));
+        Assert.Equal(50.0, Math.Round(dashboard.FreePercent, 1));
+        Assert.Contains("Paca", dashboard.StorageSummaryText);
+        Assert.Contains("여유", dashboard.StorageSummaryText);
+    }
+
+    [Fact]
+    public void Gate149_OfflineLibraryManager_Filtering_And_Sorting()
+    {
+        var manager = new OfflineLibraryManager();
+
+        manager.RegisterMedia(new OfflineMediaItem("id-1", "Alpha.mp4", 50_000_000, "/path/1", DateTimeOffset.UtcNow.AddHours(-2), true));
+        manager.RegisterMedia(new OfflineMediaItem("id-2", "Beta.mp3", 10_000_000, "/path/2", DateTimeOffset.UtcNow.AddHours(-1), true));
+        manager.RegisterMedia(new OfflineMediaItem("id-3", "Gamma.mp4", 200_000_000, "/path/3", DateTimeOffset.UtcNow, true));
+
+        // 1. 최신순 정렬 검증 (Gamma -> Beta -> Alpha)
+        var recentList = manager.GetItems(MediaFilter.All, MediaSortOrder.NewestFirst);
+        Assert.Equal(3, recentList.Count);
+        Assert.Equal("Gamma.mp4", recentList[0].FileName);
+        Assert.Equal("Beta.mp3", recentList[1].FileName);
+        Assert.Equal("Alpha.mp4", recentList[2].FileName);
+
+        // 2. 용량 큰 순 정렬 검증 (Gamma(200MB) -> Alpha(50MB) -> Beta(10MB))
+        var sizeList = manager.GetItems(MediaFilter.All, MediaSortOrder.LargestFirst);
+        Assert.Equal("Gamma.mp4", sizeList[0].FileName);
+        Assert.Equal("Alpha.mp4", sizeList[1].FileName);
+        Assert.Equal("Beta.mp3", sizeList[2].FileName);
+
+        // 3. 오디오만 필터링 검증
+        var audioList = manager.GetItems(MediaFilter.AudioOnly, MediaSortOrder.NewestFirst);
+        Assert.Single(audioList);
+        Assert.Equal("Beta.mp3", audioList[0].FileName);
+
+        // 4. 비디오만 필터링 검증
+        var videoList = manager.GetItems(MediaFilter.VideoOnly, MediaSortOrder.NewestFirst);
+        Assert.Equal(2, videoList.Count);
+        Assert.DoesNotContain(videoList, x => x.FileName.EndsWith(".mp3"));
+    }
+
+    [Fact]
+    public void Gate150_OfflineLibraryManager_Deletion_Updates_Quota()
+    {
+        var manager = new OfflineLibraryManager();
+        manager.RegisterMedia(new OfflineMediaItem("id-1", "Video1.mp4", 100_000_000, "/path/1", DateTimeOffset.UtcNow, true));
+        manager.RegisterMedia(new OfflineMediaItem("id-2", "Video2.mp4", 50_000_000, "/path/2", DateTimeOffset.UtcNow, true));
+
+        Assert.Equal(150_000_000L, manager.TotalPacaBytes);
+
+        // id-1 삭제
+        var removed = manager.RemoveMedia("id-1");
+        Assert.True(removed);
+        Assert.Equal(50_000_000L, manager.TotalPacaBytes);
+        Assert.Single(manager.GetItems(MediaFilter.All, MediaSortOrder.NewestFirst));
+    }
+}