feat(my): add 我的笔记 page and related functions

1. 新增我的笔记页面，包含学科筛选Tab和游标分页列表
2. 新增user_note接口封装和对应数据模型
3. 在我的页面添加笔记入口跳转
4. 优化收藏/错题卡片的按压反馈效果

lib/features/my/question_list/question_list_page.dart

@@ -326,58 +326,81 @@ class _QuestionListPageState extends State<QuestionListPage> {
 }
 
 /// 单条收藏/错题卡片：SubjectTag + 时间 + packName + 题干富文本
-class _QuestionCard extends StatelessWidget {
+///
+/// 按压反馈：按下缩放到 0.97、抬起回弹，背景始终白色
+/// （不用 InkWell 灰底，改用 GestureDetector 驱动 AnimatedScale）。
+class _QuestionCard extends StatefulWidget {
   const _QuestionCard({required this.item, required this.onTap});
 
   final UserCollectItem item;
   final VoidCallback onTap;
 
+  @override
+  State<_QuestionCard> createState() => _QuestionCardState();
+}
+
+class _QuestionCardState extends State<_QuestionCard> {
+  /// 是否处于按压状态（控制 0.97 缩放）
+  bool _pressed = false;
+
+  void _setPressed(bool v) {
+    if (_pressed != v) setState(() => _pressed = v);
+  }
+
   @override
   Widget build(BuildContext context) {
+    final item = widget.item;
     return Padding(
       padding: EdgeInsets.only(bottom: 14.h), // Vue listItem margin-bottom: 28rpx
-      child: Material(
-        color: Colors.white,
-        borderRadius: BorderRadius.circular(16.r),
-        child: InkWell(
-          onTap: onTap,
-          borderRadius: BorderRadius.circular(16.r),
-          child: Padding(
-            // Vue padding: t-32 l/r-28 b-28
-            padding: EdgeInsets.fromLTRB(14.w, 16.h, 14.w, 14.h),
-            child: Column(
-              crossAxisAlignment: CrossAxisAlignment.start,
-              children: [
-                // 第一行：学科标签 + 时间
-                Row(
-                  children: [
-                    SubjectTag(subject: item.subjectName),
-                    const Spacer(),
-                    Text(
-                      item.createTime,
-                      style: TextStyle(
-                        fontSize: 12.sp, // Vue font-24
-                        color: const Color(0xFFB4C2E0),
+      child: GestureDetector(
+        onTapDown: (_) => _setPressed(true),
+        onTapUp: (_) => _setPressed(false),
+        onTapCancel: () => _setPressed(false),
+        onTap: widget.onTap,
+        child: AnimatedScale(
+          scale: _pressed ? 0.97 : 1.0,
+          duration: const Duration(milliseconds: 100),
+          curve: Curves.easeOut,
+          child: Material(
+            color: Colors.white,
+            borderRadius: BorderRadius.circular(16.r),
+            child: Padding(
+              // Vue padding: t-32 l/r-28 b-28
+              padding: EdgeInsets.fromLTRB(14.w, 16.h, 14.w, 14.h),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  // 第一行：学科标签 + 时间
+                  Row(
+                    children: [
+                      SubjectTag(subject: item.subjectName),
+                      const Spacer(),
+                      Text(
+                        item.createTime,
+                        style: TextStyle(
+                          fontSize: 12.sp, // Vue font-24
+                          color: const Color(0xFFB4C2E0),
+                        ),
                       ),
-                    ),
-                  ],
-                ),
-                SizedBox(height: 14.h), // Vue pack-name margin-top: 28rpx
-                // 试卷/礼包名
-                Text(
-                  item.packName,
-                  maxLines: 2,
-                  overflow: TextOverflow.ellipsis,
-                  style: TextStyle(
-                    fontSize: 16.sp, // Vue font-32
-                    fontWeight: FontWeight.w600,
-                    color: const Color(0xFF1D2B47),
+                    ],
                   ),
-                ),
-                SizedBox(height: 16.h), // Vue question-stem-wrap margin-top: 32rpx
-                // 题干富文本（限高渐隐）
-                _StemBox(html: item.questionStem),
-              ],
+                  SizedBox(height: 14.h), // Vue pack-name margin-top: 28rpx
+                  // 试卷/礼包名
+                  Text(
+                    item.packName,
+                    maxLines: 2,
+                    overflow: TextOverflow.ellipsis,
+                    style: TextStyle(
+                      fontSize: 16.sp, // Vue font-32
+                      fontWeight: FontWeight.w600,
+                      color: const Color(0xFF1D2B47),
+                    ),
+                  ),
+                  SizedBox(height: 16.h), // Vue question-stem-wrap margin-top: 32rpx
+                  // 题干富文本（限高渐隐）
+                  _StemBox(html: item.questionStem),
+                ],
+              ),
             ),
           ),
         ),