feat: 新增过渡页面路由、上传组件及完善跳转逻辑

- 为conquerPackage模块添加过渡页面路由并实现页面跳转逻辑
- 新增通用多图上传组件Upload，支持多种模式与图片操作功能
- 新增任务相关的API及Model基础文件
- 注释课前课中页面的测试试题内容

lib/core/api/conquerPackage/beforeDuringClass/api.dart

@@ -22,6 +22,10 @@ import 'package:new_learn/core/network/dio_client.dart';
 ///     —— 获取攻克报告（view 模式数据源）
 ///        GET  /api/v1/StudyPack/GetReport/{recordId}
 ///
+///   getRecord
+///     —— 获取攻克记录信息（过渡页使用）
+///        GET  /api/v1/StudyPack/GetRecord/{recordId}
+///
 /// 注意：
 ///   - 页面只调这里，不直接碰 Dio；
 ///   - 异常不在 catch，交页面统一处理；
@@ -77,4 +81,17 @@ class BeforeDuringClassApi {
     }
     return const HandoutListResponse();
   }
+
+  /// 获取攻克记录信息 → GET /api/v1/StudyPack/GetRecord/{recordId}
+  ///
+  /// 过渡页使用：获取攻克包名称、攻克标准、是否有题目等。
+  Future<OvercomeRecordInfo> getRecord(String recordId) async {
+    final data = await DioClient.instance.get(
+      '/api/v1/StudyPack/GetRecord/$recordId',
+    );
+    if (data is Map<String, dynamic>) {
+      return OvercomeRecordInfo.fromJson(data);
+    }
+    return const OvercomeRecordInfo();
+  }
 }

lib/core/api/conquerPackage/beforeDuringClass/model.dart

@@ -154,6 +154,34 @@ class HandoutItem {
   }
 }
 
+/// 攻克记录信息（过渡页使用，对标 Vue GetRecordData 返回值）
+///
+/// 接口：GET /api/v1/StudyPack/GetRecord/{recordId}
+/// 用于过渡页（课前/课中/课后）展示攻克包名称、攻克标准、是否有题目等。
+class OvercomeRecordInfo {
+  const OvercomeRecordInfo({
+    this.id = '',
+    this.name = '',
+    this.overcomeStandard = 0,
+    this.hasQuestion = false,
+  });
+
+  final String id; // 记录 id
+  final String name; // 攻克包名称
+  final int overcomeStandard; // 攻克标准（百分比 0-100）
+  final bool hasQuestion; // 是否有题目
+
+  factory OvercomeRecordInfo.fromJson(Map<String, dynamic> json) {
+    final payload = (json['data'] as Map<String, dynamic>?) ?? json;
+    return OvercomeRecordInfo(
+      id: payload['id']?.toString() ?? '',
+      name: payload['name'] as String? ?? '',
+      overcomeStandard: _parseInt(payload['overcomeStandard']),
+      hasQuestion: payload['hasQuestion'] as bool? ?? false,
+    );
+  }
+}
+
 /// 讲义列表响应（Handout 接口返回的列表）
 class HandoutListResponse {
   const HandoutListResponse({this.items = const []});

lib/core/components/rich_text_content.dart

@@ -1,4 +1,6 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_screenutil/flutter_screenutil.dart';
+import 'package:flutter_svg/flutter_svg.dart';
 import 'package:flutter_widget_from_html_core/flutter_widget_from_html_core.dart';
 import 'package:new_learn/core/components/audio_player_card.dart';
 import 'package:new_learn/core/components/video_player_view.dart';
@@ -79,13 +81,47 @@ class RichTextContent extends StatelessWidget {
       textStyle: textStyle,
       onTapUrl: onTapUrl ?? _defaultOnTapUrl,
       customStylesBuilder: customStylesBuilder,
-      customWidgetBuilder: _combinedCustomWidget,
+      customWidgetBuilder: _combinedCustomWidget(context),
       renderMode: renderMode,
     );
   }
 
   /// 合并默认替换 + 用户自定义替换
-  CustomWidgetBuilder get _combinedCustomWidget => (element) {
+  CustomWidgetBuilder _combinedCustomWidget(BuildContext context) => (element) {
+        // 内置：<img src="*.svg"> → flutter_svg 行内渲染
+        // core 版 flutter_widget_from_html 不支持 SVG，手动处理
+        if (element.localName == 'img') {
+          final src = element.attributes['src'];
+          if (src != null && src.toLowerCase().endsWith('.svg')) {
+            final width = double.tryParse(element.attributes['width'] ?? '');
+            final height = double.tryParse(element.attributes['height'] ?? '');
+            final w = width != null ? width.w : null;
+            final h = height != null ? height.h : null;
+            // 超采样（SSAA）：SVG 以 3 倍尺寸光栅化再缩回来，消除真机边缘锯齿
+            const scale = 3.0;
+            return InlineCustomWidget(
+              child: SizedBox(
+                width: w,
+                height: h,
+                child: OverflowBox(
+                  maxWidth: w != null ? w * scale : double.infinity,
+                  maxHeight: h != null ? h * scale : double.infinity,
+                  child: Transform.scale(
+                    scale: 1 / scale,
+                    alignment: Alignment.center,
+                    child: SvgPicture.network(
+                      src,
+                      width: w != null ? w * scale : null,
+                      height: h != null ? h * scale : null,
+                      fit: BoxFit.contain,
+                      clipBehavior: Clip.antiAlias,
+                    ),
+                  ),
+                ),
+              ),
+            );
+          }
+        }
         // 内置：<audio> → 本项目 AudioPlayerCard
         if (element.localName == 'audio') {
           final src = element.attributes['src'];

lib/core/router/app_router.dart

@@ -16,6 +16,7 @@ import 'package:new_learn/features/my/my_page.dart';
 import 'package:new_learn/features/my/note/note_page.dart';
 import 'package:new_learn/features/conquerPackage/captureList/index.dart';
 import 'package:new_learn/features/conquerPackage/beforeDuringClass/index.dart';
+import 'package:new_learn/features/conquerPackage/transitionPage/transition_page.dart';
 import 'package:new_learn/features/my/my_point/my_point_page.dart';
 import 'package:new_learn/features/my/question_list/question_list_page.dart';
 import 'package:new_learn/features/my/my_report/my_report_page.dart';
@@ -210,6 +211,12 @@ final GoRouter appRouter = GoRouter(
         extra: state.extra as Map<String, dynamic>?,
       ),
     ),
+    GoRoute(
+      path: '/conquerPackage/transitionPage',
+      builder: (_, state) => TransitionPage(
+        extra: state.extra as Map<String, dynamic>?,
+      ),
+    ),
     GoRoute(path: '/register', builder: (_, _) => const RegisterPage()),
 
     // app_router.dart 的 routes 里加，不用管跳转逻辑