fixed some bugs on ios

ios/OralTrainer/Player/PlayerController.swift

@@ -318,21 +318,27 @@ final class PlayerController: ObservableObject {
     }
 
     /// 只播放当前句子，播完自动暂停并回到句首（评测“播放原句”）。
+    /// 必须先打上句尾标记再 seek，这样 completion 里的 forwardPlaybackEndTime
+    /// 会卡在当前句 endMs，而不是等 250ms 观察器才停。
     func playCurrentSentenceAndStop() {
         guard let sentence = currentSentence else {
             return
         }
-        performSeek(to: sentenceSeekPosition(sentence))
         stopAtSentenceEnd = true
         stopAtSentenceEndIndex = sentence.index
-        play()
+        lastSentenceIndex = sentence.index
+        playbackIntent = true
+        performSeek(to: sentenceSeekPosition(sentence), resumePlayback: true)
     }
 
     // MARK: - 设置
 
     func setContinuousPlayback(_ enabled: Bool) {
         config.continuousPlayback = enabled
-        refreshSentenceBoundaryGuard()
+        if !enabled {
+            lastSentenceIndex = currentSentence?.index ?? lastSentenceIndex
+        }
+        refreshSentenceBoundaryGuard(force: true)
     }
 
     func setSentenceMode(_ enabled: Bool) {
@@ -783,6 +789,13 @@ final class PlayerController: ObservableObject {
             tick()
             return
         }
+        // 评测“播放原句”即使处于连续播放，也要用当前句硬边界，不能滑进下一句。
+        if stopAtSentenceEnd,
+           let index = stopAtSentenceEndIndex,
+           let sentence = mediaItem?.sentences.first(where: { $0.index == index }) {
+            applySentenceEndAction(sentence)
+            return
+        }
         // 若最后一个句子的 endMs 就是视频末尾，forwardPlaybackEndTime 和自然结束
         // 是同一时间点。此时必须执行“当前句”的句尾动作，而不能整条视频回零。
         if config.sentenceMode,

ios/OralTrainer/Services/ImitationAssessor.swift

@@ -88,16 +88,20 @@ enum ImitationAssessor {
         appendFile(&body, boundary: boundary, name: "audio", filename: filename, mimeType: mimeType, data: recordingData)
         body.append(Data("--\(boundary)--\r\n".utf8))
 
+        var headers = [
+            "Accept": "application/json",
+            "Content-Type": "multipart/form-data; boundary=\(boundary)",
+            "X-Client-Key": AppConfig.assessmentAPIKey,
+        ]
+        if !AppConfig.authToken.isEmpty {
+            headers["Authorization"] = "Bearer \(AppConfig.authToken)"
+        }
         let result = try await HTTPClient.execute(
             baseURL: AppConfig.serverBaseURL,
             path: path,
             method: "POST",
             timeout: AppConfig.assessmentTimeout,
-            headers: [
-                "Accept": "application/json",
-                "Content-Type": "multipart/form-data; boundary=\(boundary)",
-                "X-Client-Key": AppConfig.assessmentAPIKey,
-            ],
+            headers: headers,
             body: body
         )
         guard (200...299).contains(result.statusCode) else {

ios/OralTrainer/Views/RootView.swift

@@ -90,6 +90,9 @@ struct RootView: View {
         .onChange(of: activeModule) { module in
             if module == .train {
                 controller.setContinuousPlayback(continuousPlayback)
+            } else if module == .test {
+                // 与安卓测试页一致：按当前句窗口播放，避免滑进下一句。
+                controller.setContinuousPlayback(false)
             } else {
                 controller.setContinuousPlayback(true)
             }

ios/OralTrainer/Views/TestView.swift

@@ -35,7 +35,7 @@ struct TestView: View {
                 PlayerSectionView(
                     controller: controller,
                     showsContinuousToggle: false,
-                    continuousPlayback: .constant(true),
+                    continuousPlayback: .constant(false),
                     showsSubtitle: $testSubtitleVisible,
                     onFullscreen: onFullscreen
                 )
@@ -321,7 +321,7 @@ struct TestView: View {
         dubSegments[sentence.index] = audioURL
         dubRawSegments[sentence.index] = rawPersistedURL
         mergedDubURL = nil
-        submitAssessment(recordingURL: url)
+        submitAssessment(recordingURL: audioURL)
     }
 
     private func restorePlaybackAudioSession() {