feat: add new assets, optimize list layout and重构个人中心页面

1. 新增fork/star/close等多个业务图标并配置到静态资源路径
2. 新增静态资源CDN配置常量
3. 优化帖子列表加载更多UI，无更多数据时显示提示文本
4. 重构我的页面布局，对齐Vue端实现，替换图标为CDN资源
5. 统一退出登录弹窗为公共组件，调整代码格式与缩进

lib/features/class/my_interact_page.dart

@@ -47,6 +47,7 @@ class _MyInteractPageState extends State<MyInteractPage> {
       backgroundColor: const Color(0xFFF5F8FA),
       appBar: AppBar(
         backgroundColor: const Color(0xFFF5F8FA),
+        surfaceTintColor: Colors.transparent, // 滚动时不叠加半透明色，背景保持不变
         elevation: 0,
         title: const Text(
           '我的互动',
@@ -127,13 +128,14 @@ class _UpdateTab extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return PostListBody(
-      fetchPage: ({required pageIndex, required pageSize, required prevPageId}) =>
-          ClassApi.instance.getUserClassPost(
-            queryType: 0,
-            pageIndex: pageIndex,
-            pageSize: pageSize,
-            prevPageId: prevPageId,
-          ),
+      fetchPage:
+          ({required pageIndex, required pageSize, required prevPageId}) =>
+              ClassApi.instance.getUserClassPost(
+                queryType: 0,
+                pageIndex: pageIndex,
+                pageSize: pageSize,
+                prevPageId: prevPageId,
+              ),
       emptyText: '暂无动态',
       onTapPost: onTapPost,
     );
@@ -147,12 +149,13 @@ class _LikeTab extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return PostListBody(
-      fetchPage: ({required pageIndex, required pageSize, required prevPageId}) =>
-          ClassApi.instance.getMyLikePage(
-            pageIndex: pageIndex,
-            pageSize: pageSize,
-            prevPageId: prevPageId,
-          ),
+      fetchPage:
+          ({required pageIndex, required pageSize, required prevPageId}) =>
+              ClassApi.instance.getMyLikePage(
+                pageIndex: pageIndex,
+                pageSize: pageSize,
+                prevPageId: prevPageId,
+              ),
       emptyText: '暂无点赞',
       removeOnUnlike: true,
       onTapPost: onTapPost,
@@ -167,14 +170,15 @@ class _CommentTab extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return PostListBody(
-      fetchPage: ({required pageIndex, required pageSize, required prevPageId}) =>
-          ClassApi.instance.getMyCommentPage(
-            pageIndex: pageIndex,
-            pageSize: pageSize,
-            prevPageId: prevPageId,
-          ),
+      fetchPage:
+          ({required pageIndex, required pageSize, required prevPageId}) =>
+              ClassApi.instance.getMyCommentPage(
+                pageIndex: pageIndex,
+                pageSize: pageSize,
+                prevPageId: prevPageId,
+              ),
       emptyText: '暂无留言',
       onTapPost: onTapPost,
     );
   }
-}
+}