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/MobilePlayerGestureAndPipGateTests.cs

@@ -0,0 +1,76 @@
+using System;
+using Paca.Mobile.Core;
+using Xunit;
+
+namespace Paca.Tests.Mobile;
+
+/// <summary>
+/// Gate 191 ~ 194: 모바일 플레이어 제스처 컨트롤 및 백그라운드 PIP 재생 세션 기계적 검증
+/// </summary>
+public class MobilePlayerGestureAndPipGateTests
+{
+    [Theory]
+    [InlineData(100.0, 600, 1000, 60)]   // 1000px 화면에서 오른쪽으로 100px 스와이프 -> 10분(600초) 영상 중 60초 앞으로 탐색
+    [InlineData(-50.0, 600, 1000, -30)]  // 왼쪽으로 50px 스와이프 -> 30초 뒤로 탐색
+    [InlineData(0.0, 600, 1000, 0)]      // 이동 없음
+    public void Gate191_PlayerGesture_Horizontal_Seek_Calculation(double deltaX, double totalDurationSec, double screenWidth, double expectedDeltaSec)
+    {
+        var total = TimeSpan.FromSeconds(totalDurationSec);
+        var seekDelta = PlayerGestureController.CalculateSeekDelta(deltaX, total, screenWidth);
+
+        Assert.Equal(expectedDeltaSec, Math.Round(seekDelta.TotalSeconds));
+    }
+
+    [Fact]
+    public void Gate192_PlayerGesture_Vertical_Brightness_And_Volume_Separation()
+    {
+        // 1. 좌측 영역 (X < 500 in 1000px 화면) -> 밝기 조절
+        var isLeftZone = PlayerGestureController.IsLeftZone(xPosition: 200, screenWidth: 1000);
+        Assert.True(isLeftZone);
+
+        // 위로 100px 스와이프 (screenHeight: 1000) -> 밝기 +0.1
+        var newBrightness = PlayerGestureController.CalculateLevelDelta(currentLevel: 0.5, deltaY: -100, screenHeight: 1000);
+        Assert.Equal(0.6, Math.Round(newBrightness, 2));
+
+        // 2. 우측 영역 (X > 500) -> 볼륨 조절
+        var isRightZone = !PlayerGestureController.IsLeftZone(xPosition: 800, screenWidth: 1000);
+        Assert.True(isRightZone);
+
+        // 최대치 1.0 초과 방지 클램프 검증
+        var clampedMax = PlayerGestureController.CalculateLevelDelta(currentLevel: 0.95, deltaY: -200, screenHeight: 1000);
+        Assert.Equal(1.0, clampedMax);
+
+        // 최소치 0.0 미만 방지 클램프 검증
+        var clampedMin = PlayerGestureController.CalculateLevelDelta(currentLevel: 0.05, deltaY: 200, screenHeight: 1000);
+        Assert.Equal(0.0, clampedMin);
+    }
+
+    [Fact]
+    public void Gate193_BackgroundPlaybackSession_Metadata_And_State()
+    {
+        var session = new BackgroundPlaybackSession(
+            TrackTitle: "Lo-Fi Coding Chill Beats",
+            ArtistName: "Paca Ambient Radio",
+            CurrentPosition: TimeSpan.FromMinutes(12),
+            TotalDuration: TimeSpan.FromMinutes(45),
+            IsPlaying: true
+        );
+
+        Assert.Equal("Lo-Fi Coding Chill Beats", session.TrackTitle);
+        Assert.True(session.IsPlaying);
+
+        // 일시정지 상태 전환
+        var paused = session.TogglePlayPause();
+        Assert.False(paused.IsPlaying);
+    }
+
+    [Theory]
+    [InlineData(33, true)]  // Android 13 -> PIP 지원
+    [InlineData(26, true)]  // Android 8.0 -> PIP 지원
+    [InlineData(25, false)] // Android 7.1 -> PIP 미지원
+    public void Gate194_PipCapability_Evaluation(int androidApiLevel, bool expectedSupported)
+    {
+        var isSupported = PipCapabilityInspector.IsPipSupported(androidApiLevel);
+        Assert.Equal(expectedSupported, isSupported);
+    }
+}