remove lessonTitleText in training module

ios/OralTrainer/Views/FullscreenPlayerView.swift

@@ -3,6 +3,7 @@ import SwiftUI
 /// 与安卓端横屏布局一致：全屏播放 + 半透明句面板 + 退出全屏按钮。
 struct FullscreenPlayerView: View {
     @ObservedObject var controller: PlayerController
+    var showsLessonTitle: Bool = true
     let onExit: () -> Void
 
     @State private var subtitleVisible = true
@@ -55,10 +56,12 @@ struct FullscreenPlayerView: View {
                 Spacer()
                 if subtitleVisible {
                     VStack(alignment: .leading, spacing: 6) {
-                        Text(controller.currentItem?.title ?? "未选择课程")
-                            .font(.system(size: 17, weight: .bold))
-                            .foregroundColor(.white)
-                            .lineLimit(1)
+                        if showsLessonTitle {
+                            Text(controller.currentItem?.title ?? "未选择课程")
+                                .font(.system(size: 17, weight: .bold))
+                                .foregroundColor(.white)
+                                .lineLimit(1)
+                        }
                         Text(sentenceMetaText)
                             .font(.system(size: 13))
                             .foregroundColor(Theme.textOverlay)

ios/OralTrainer/Views/PlayerSectionView.swift

@@ -6,6 +6,7 @@ struct PlayerSectionView: View {
     var showsContinuousToggle: Bool
     @Binding var continuousPlayback: Bool
     var showsSubtitle: Binding<Bool>? = .constant(true)
+    var showsLessonTitle: Bool = true
     var onFullscreen: () -> Void
 
     @State private var progressDragging = false
@@ -74,10 +75,12 @@ struct PlayerSectionView: View {
 
     private var sentencePanel: some View {
         VStack(alignment: .leading, spacing: 6) {
-            Text(controller.currentItem?.title ?? "未选择课程")
-                .font(.system(size: 17, weight: .bold))
-                .foregroundColor(.white)
-                .lineLimit(1)
+            if showsLessonTitle {
+                Text(controller.currentItem?.title ?? "未选择课程")
+                    .font(.system(size: 17, weight: .bold))
+                    .foregroundColor(.white)
+                    .lineLimit(1)
+            }
             if showsContinuousToggle {
                 HStack(spacing: 0) {
                     Text("连续播放")

ios/OralTrainer/Views/RootView.swift

@@ -113,7 +113,10 @@ struct RootView: View {
             syncCurrentCourse(with: videoHash)
         }
         .fullScreenCover(isPresented: $showFullscreenPlayer) {
-            FullscreenPlayerView(controller: controller) {
+            FullscreenPlayerView(
+                controller: controller,
+                showsLessonTitle: activeModule != .train
+            ) {
                 exitFullscreen()
             }
             .onAppear {

ios/OralTrainer/Views/TrainingView.swift

@@ -13,6 +13,7 @@ struct TrainingView: View {
                     controller: controller,
                     showsContinuousToggle: true,
                     continuousPlayback: $continuousPlayback,
+                    showsLessonTitle: false,
                     onFullscreen: onFullscreen
                 )
                 CatalogView(vm: catalogVM)