added ios module

ios/OralTrainer/Models/PlaybackModels.swift

@@ -0,0 +1,58 @@
+import Foundation
+
+enum PlaybackState: String {
+    case idle
+    case buffering
+    case ready
+    case ended
+}
+
+struct PlaybackSnapshot: Equatable {
+    var mediaId: String?
+    var positionMs: Int64 = 0
+    var durationMs: Int64 = -1
+    var bufferedPositionMs: Int64 = 0
+    var isPlaying = false
+    var state: PlaybackState = .idle
+    var speed: Float = 1
+    var sentenceIndex: Int?
+}
+
+struct PlayerConfig {
+    var sentenceMode = true
+    var defaultSeekStepMs: Int64 = 10_000
+    var autoPlay = false
+    var continuousPlayback = true
+    var minPlaybackSpeed: Float = 0.5
+    var maxPlaybackSpeed: Float = 2.0
+}
+
+enum LoopMode {
+    case off
+    case one
+    case all
+}
+
+enum SwipeAction {
+    case none
+    case rewind
+    case forward
+    case previousSentence
+    case nextSentence
+    case previousSentenceOrRewind
+    case nextSentenceOrForward
+}
+
+enum GestureKind {
+    case singleTap
+    case swipeLeft
+    case swipeRight
+    case longPressSpeed
+}
+
+enum BoundaryState: Equatable {
+    case idle
+    case loading(isLocal: Bool)
+    case loaded(count: Int)
+    case failed(message: String)
+}