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/AudioDynamicRangeCompressorGateTests.cs

@@ -0,0 +1,57 @@
+using System;
+using Paca.Core;
+using Xunit;
+
+namespace Paca.Tests.Core;
+
+public class AudioDynamicRangeCompressorGateTests
+{
+    [Fact]
+    public void Gate429_AudioDynamicRangeCompressor_BuildsPresetFilter_Accurately()
+    {
+        var filter = AudioDynamicRangeCompressor.BuildFilter(CompressorPreset.NightListening);
+
+        Assert.Contains("threshold=-24dB", filter);
+        Assert.Contains("ratio=6", filter);
+        Assert.Contains("alimiter=limit=-1dB", filter);
+    }
+
+    [Fact]
+    public void Gate430_AudioDynamicRangeCompressor_BuildsCustomCompressorFilter()
+    {
+        var filter = AudioDynamicRangeCompressor.BuildCustomFilter(
+            thresholdDb: -22.0,
+            ratio: 5.0,
+            attackMs: 8.0,
+            releaseMs: 120.0,
+            makeupDb: 5.0,
+            limitPeakDb: -0.5
+        );
+
+        Assert.Contains("threshold=-22dB", filter);
+        Assert.Contains("ratio=5", filter);
+        Assert.Contains("attack=8", filter);
+        Assert.Contains("release=120", filter);
+        Assert.Contains("makeup=5dB", filter);
+        Assert.Contains("alimiter=limit=-0.5dB", filter);
+    }
+
+    [Fact]
+    public void Gate431_AudioDynamicRangeCompressor_HandlesPassthrough()
+    {
+        var filter = AudioDynamicRangeCompressor.BuildFilter(CompressorPreset.None);
+        Assert.Equal("anull", filter);
+    }
+
+    [Fact]
+    public void Gate432_AudioDynamicRangeCompressor_BuildsFfmpegArgs_Properly()
+    {
+        var args = AudioDynamicRangeCompressor.BuildFfmpegArgs("in.mp4", "out.mp4", CompressorPreset.NightListening, copyVideo: true);
+
+        Assert.Contains("-i \"in.mp4\"", args);
+        Assert.Contains("-c:v copy", args);
+        Assert.Contains("-af \"acompressor=", args);
+        Assert.Contains("-c:a aac -b:a 192k", args);
+        Assert.Contains("\"out.mp4\"", args);
+    }
+}