添加 network_info_plus 依赖以支持局域网 IP 获取；在事件信息和录制页面中增强局域网 IP 查询功能，更新相关模型以包含 scheduleId 字段；重构录制页面以改善用户体验，修复推流控制器释放逻辑。

lib/features/recording/pages/page_record.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:io';
 
 import 'package:apivideo_live_stream/apivideo_live_stream.dart';
@@ -20,7 +21,6 @@ import 'package:recording_tool/features/recording/widgets/widget_recording_hud.d
 import 'package:recording_tool/features/recording/widgets/widget_recording_loading_overlay.dart';
 import 'package:recording_tool/features/recording/widgets/widget_recording_saved_dialog.dart';
 import 'package:recording_tool/features/recording/widgets/widget_recording_touch_lock_overlay.dart';
-import 'package:recording_tool/features/scan_qrcode/pages/page_scan_qrcode.dart';
 import 'package:recording_tool/features/scan_qrcode/utils/rtmp_stream_target.dart';
 import 'package:recording_tool/shared/widgets/widgets.dart';
 
@@ -57,7 +57,7 @@ class _RecordingPageState extends ConsumerState<RecordingPage> {
     _streamController = ApiVideoLiveStreamController(
       initialAudioConfig: AudioConfig(bitrate: 128000),
       initialVideoConfig: VideoConfig.withDefaultBitrate(
-        resolution: Resolution.RESOLUTION_1080,
+        resolution: Resolution.RESOLUTION_720,
         fps: 30,
       ),
       onConnectionSuccess: () => {debugPrint('推流成功')},
@@ -314,7 +314,7 @@ class _RecordingPageState extends ConsumerState<RecordingPage> {
 
   /// 返回扫码页，准备新一轮录制。
   void _recordNewRound() {
-    AppNavigator.pushAndRemoveUntil(const ScanQrCodePage());
+    AppNavigator.pop(context: context);
   }
 
   /// 推流结束后按需弹出完成对话框
@@ -337,38 +337,53 @@ class _RecordingPageState extends ConsumerState<RecordingPage> {
     );
   }
 
-  /// 退出沉浸式并释放录制会话
+  /// 退出沉浸式并释放录制会话。
+  /// 先恢复系统栏，再错开一帧释放编码器，减轻返回动画卡顿。
   Future<void> _exitRecordingMode() async {
-    if (!_immersiveApplied) return;
-    await ref.read(recordingViewModelProvider.notifier).teardown();
+    await _restoreSystemUiIfNeeded();
+    if (mounted) {
+      await ref.read(recordingViewModelProvider.notifier).teardown();
+    }
+
+    // 让 pop 动画先跑起来，再做 MediaCodec 释放。
+    await Future<void>.delayed(Duration.zero);
     await _disposeStreamController();
+  }
+
+  Future<void> _restoreSystemUiIfNeeded() async {
+    if (!_immersiveApplied) return;
+    _immersiveApplied = false;
     await SystemChrome.setEnabledSystemUIMode(
       SystemUiMode.manual,
       overlays: SystemUiOverlay.values,
     );
     await RecordingPlatform.setImmersiveMode(enabled: false);
-    _immersiveApplied = false;
   }
 
   @override
-  /// 页面销毁时恢复系统 UI
+  /// 页面销毁时兜底恢复系统 UI 并释放推流控制器
   void dispose() {
     if (_immersiveApplied) {
+      _immersiveApplied = false;
       SystemChrome.setEnabledSystemUIMode(
         SystemUiMode.manual,
         overlays: SystemUiOverlay.values,
       );
-      RecordingPlatform.setImmersiveMode(enabled: false);
+      unawaited(RecordingPlatform.setImmersiveMode(enabled: false));
     }
-    _disposeStreamController();
+    unawaited(_disposeStreamController());
     super.dispose();
   }
 
+  /// 只 dispose 一次；原生 dispose 内部已 stopStream，避免 stop+dispose 双次停流。
   Future<void> _disposeStreamController() async {
     if (_controllerDisposed) return;
     _controllerDisposed = true;
-    await _streamController.stop();
-    await _streamController.dispose();
+    try {
+      await _streamController.dispose();
+    } catch (error, stackTrace) {
+      debugPrint('释放推流控制器失败: $error\n$stackTrace');
+    }
   }
 
   @override
@@ -427,9 +442,10 @@ class _RecordingPopScope extends ConsumerWidget {
 
     return PopScope(
       canPop: !isRecording,
-      onPopInvokedWithResult: (didPop, result) async {
+      onPopInvokedWithResult: (didPop, result) {
         if (didPop) {
-          await onExitRecordingMode();
+          // 不 await，避免把 MediaCodec 释放堵在 Pop 回调上。
+          unawaited(onExitRecordingMode());
           return;
         }
         if (isRecording) {

lib/features/recording/view-model/view_model_recording.dart

@@ -280,9 +280,8 @@ class RecordingViewModel extends Notifier<RecordingModel> {
     _updateSession((s) => s.copyWith(isBatteryOptimizedIgnored: ignored));
   }
 
-  /// 退出录制页时释放相机、勿扰和状态订阅。
+  /// 退出录制页时释放勿扰和会话状态（沉浸式由页面统一恢复）。
   Future<void> teardown() async {
-    await RecordingPlatform.setImmersiveMode(enabled: false);
     await RecordingPlatform.disableDoNotDisturb();
     _recordingStartedAt = null;
     _elapsedTimer?.cancel();

lib/features/recording/widgets/widget_record_header.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
+import 'package:recording_tool/app/router/app_navigator.dart';
 import 'package:recording_tool/features/recording/widgets/record_content_transition.dart';
 import 'package:recording_tool/gen/assets.gen.dart';
 
@@ -59,6 +60,14 @@ class RecordHeaderWidget extends StatelessWidget {
                   ],
                 ),
               ),
+              // 返回上一页
+              IconButton(
+                onPressed: () => AppNavigator.pop(context: context),
+                icon: Icon(Icons.arrow_back, size: 32.r),
+                color: Colors.white,
+                padding: EdgeInsets.only(left: 16.w),
+                constraints: BoxConstraints(minWidth: 56.w, minHeight: 52.h),
+              ),
             ],
           ),
         ),