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/MobileProductionFeaturesGateTests.cs

@@ -0,0 +1,102 @@
+using System;
+using System.IO;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+using Paca.Mobile.Core;
+using Xunit;
+
+namespace Paca.Tests.Mobile;
+
+/// <summary>
+/// Gate 133 ~ 138: PacaDrop 초고속 미디어 전송 및 Send-to-PC 프로덕션 경험 기계적 검증
+/// </summary>
+public class MobileProductionFeaturesGateTests
+{
+    [Fact]
+    public void Gate133_PacaDrop_TransferManifest_Integrity()
+    {
+        var rawData = Encoding.UTF8.GetBytes("PacaDrop-Binary-Content-Payload-Stream-Test-Data");
+        var sha256 = Convert.ToHexString(SHA256.HashData(rawData));
+
+        var manifest = new PacaDropManifest(
+            FileId: "media-file-99",
+            FileName: "BigBuckBunny_4K.mp4",
+            TotalBytes: rawData.Length,
+            Sha256Checksum: sha256,
+            MimeType: "video/mp4",
+            CreatedAt: DateTimeOffset.UtcNow
+        );
+
+        Assert.Equal("BigBuckBunny_4K.mp4", manifest.FileName);
+        Assert.Equal(rawData.Length, manifest.TotalBytes);
+        Assert.True(manifest.VerifyChecksum(rawData));
+
+        // 위조되거나 잘린 데이터 검증 실패 확인
+        var corruptedData = Encoding.UTF8.GetBytes("Corrupted-Data");
+        Assert.False(manifest.VerifyChecksum(corruptedData));
+    }
+
+    [Fact]
+    public void Gate134_PacaDropTransfer_Progress_And_Speed_Tracking()
+    {
+        var tracker = new PacaDropProgressTracker(totalBytes: 100_000_000L); // 100MB
+        Assert.Equal(0, tracker.Percent);
+        Assert.False(tracker.IsCompleted);
+
+        // 50MB 수신 보고
+        tracker.UpdateProgress(transferredBytes: 50_000_000L);
+        Assert.Equal(50, (int)tracker.Percent);
+        Assert.False(tracker.IsCompleted);
+
+        // 100MB 완료 보고
+        tracker.UpdateProgress(transferredBytes: 100_000_000L);
+        Assert.Equal(100, (int)tracker.Percent);
+        Assert.True(tracker.IsCompleted);
+    }
+
+    [Fact]
+    public void Gate135_SendToPc_SmartDispatcher_Extracts_And_Enriches()
+    {
+        var dispatcher = new SendToPcDispatcher();
+        var rawShareText = "Check this amazing video out! https://youtu.be/dQw4w9WgXcQ?si=abcdef [Sent from Mobile]";
+
+        var request = dispatcher.PrepareRequest(rawShareText, preferredQuality: "4K");
+        Assert.NotNull(request);
+        Assert.Equal("https://youtu.be/dQw4w9WgXcQ?si=abcdef", request.NormalizedUrl);
+        Assert.Equal("YouTube", request.DetectedPlatform);
+        Assert.Equal("4K", request.PreferredQuality);
+        Assert.True(request.IsReadyForEnqueue);
+    }
+
+    [Fact]
+    public void Gate136_SendToPc_Rejects_Empty_Or_Non_Url()
+    {
+        var dispatcher = new SendToPcDispatcher();
+        Assert.Null(dispatcher.PrepareRequest("Just random chat message without any link"));
+        Assert.Null(dispatcher.PrepareRequest(""));
+        Assert.Null(dispatcher.PrepareRequest(null!));
+    }
+
+    [Fact]
+    public void Gate137_PositionSyncStore_Persists_And_Resolves_Accurately()
+    {
+        var store = new MobilePlaybackPositionStore();
+        store.RecordPosition("item-101", 145.5); // 2분 25.5초 지점
+
+        Assert.Equal(145.5, store.GetPosition("item-101"));
+        Assert.Equal(0.0, store.GetPosition("non-existent-item"));
+
+        // 유효하지 않은 음수 위치 방어
+        store.RecordPosition("item-101", -5.0);
+        Assert.Equal(0.0, store.GetPosition("item-101"));
+    }
+
+    [Fact]
+    public void Gate138_OfflineStorageQuotaGuard_Evaluates_Available_Space()
+    {
+        var guard = new OfflineStorageQuotaGuard(maxQuotaBytes: 1_000_000_000L); // 1GB 한도
+        Assert.True(guard.CanStoreItem(itemSizeBytes: 200_000_000L, currentUsageBytes: 300_000_000L)); // 500MB < 1GB
+        Assert.False(guard.CanStoreItem(itemSizeBytes: 800_000_000L, currentUsageBytes: 300_000_000L)); // 1.1GB > 1GB
+    }
+}