ios: Liquid Glass mini player, adjustable karaoke softness (1.0.7)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ios/Stemify/Core/Settings.swift

@@ -186,6 +186,8 @@ final class Settings: @unchecked Sendable {
     /// Downloads page order: 0 download order, 1 artist, 2 release date.
     var downloadSort: Int { get { read(\.downloadSort, "downloadSort", 0) } set { write(\.downloadSort, "downloadSort", newValue, 0) } }
     var karaokeVocals: Int { get { read(\.karaokeVocals, "karaokeVocals", KaraokeVocals.Off.rawValue) } set { write(\.karaokeVocals, "karaokeVocals", newValue, KaraokeVocals.Off.rawValue) } }
+    /// How far down Soft karaoke puts the vocals, in dB.
+    var karaokeSoftDb: Int { get { read(\.karaokeSoftDb, "karaokeSoftDb", -12) } set { write(\.karaokeSoftDb, "karaokeSoftDb", newValue, -12) } }
     var keepStemMix: Bool { get { read(\.keepStemMix, "keepStemMix", true) } set { write(\.keepStemMix, "keepStemMix", newValue, true) } }
     var masterVolume: Float {
         get { access(keyPath: \.masterVolume); lock.lock(); defer { lock.unlock() }; return (store["masterVolume"] as? NSNumber)?.floatValue ?? 0.85 }