iOS 1.0 RC 2: Plex streams under upload caps, shuffle and album radio stations, Recently Added list, photo covers, crossfade

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

ios/Stemify/Core/Settings.swift

@@ -109,7 +109,7 @@ final class Settings: @unchecked Sendable {
         "servers", "plexUrl", "plexToken", "plexUser", "plexMachineId", "musicSection", "musicSectionTitle",
         "stemUrl", "stemToken", "plexAccountToken", "stemRoots", "theme", "accent", "albumColorNowPlaying", "highRefreshRate",
         "stemQuality", "cacheLimitGb", "downloadsWifiOnly", "downloadSort", "keepStemMix", "masterVolume", "tabLayout",
-        "karaokeVocals", "karaokeSoftDb", "playbackSpeed", "stemsOnly", "noStems", "precacheCount", "hiddenNowPlaying", "presets", "presetOrder", "hiddenPresets", "lockedPreset", "webStations", "lockScreenMix", "acapella",
+        "karaokeVocals", "karaokeSoftDb", "playbackSpeed", "stemsOnly", "noStems", "precacheCount", "hiddenNowPlaying", "presets", "presetOrder", "hiddenPresets", "lockedPreset", "webStations", "lockScreenMix", "acapella", "crossfadeSec", "sweetFades",
     ]
 
     private func read<T>(_ kp: KeyPath<Settings, T>, _ key: String, _ def: T) -> T {
@@ -246,6 +246,10 @@ final class Settings: @unchecked Sendable {
     var hiddenPresets: String { get { read(\.hiddenPresets, "hiddenPresets", "") } set { write(\.hiddenPresets, "hiddenPresets", newValue, "") } }
     /// The id of the preset every song starts with, or empty.
     var lockedPreset: String { get { read(\.lockedPreset, "lockedPreset", "") } set { write(\.lockedPreset, "lockedPreset", newValue, "") } }
+    /// Crossfade length in seconds, 0 is off.
+    var crossfadeSec: Int { get { read(\.crossfadeSec, "crossfadeSec", 0) } set { write(\.crossfadeSec, "crossfadeSec", min(12, max(0, newValue)), 0) } }
+    /// Skip the crossfade between songs of the same album.
+    var sweetFades: Bool { get { read(\.sweetFades, "sweetFades", true) } set { write(\.sweetFades, "sweetFades", newValue, true) } }
     var keepStemMix: Bool { get { read(\.keepStemMix, "keepStemMix", true) } set { write(\.keepStemMix, "keepStemMix", newValue, true) } }
     var playbackSpeed: Double {
         get { access(keyPath: \.playbackSpeed); lock.lock(); defer { lock.unlock() }; return (store["playbackSpeed"] as? NSNumber)?.doubleValue ?? 1 }