feat(teacher): 改进教师表单页面布局和样式

重构教师表单页面，优化布局和样式，提升用户体验
- 添加作业说明文本区域
- 使用van-stepper组件替代数字输入
- 重新组织表单结构为清晰的部分
- 增强移动端响应式设计
- 更新样式和交互元素

@@ -62,6 +62,7 @@ declare module 'vue' {
     VanRate: typeof import('vant/es')['Rate']
     VanRow: typeof import('vant/es')['Row']
     VanSearch: typeof import('vant/es')['Search']
+    VanStepper: typeof import('vant/es')['Stepper']
     VanSticky: typeof import('vant/es')['Sticky']
     VanSwipe: typeof import('vant/es')['Swipe']
     VanSwipeItem: typeof import('vant/es')['SwipeItem']

 <!--
   * @Date: 2025-05-29 15:34:17
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-06-20 10:56:22
+ * @LastEditTime: 2025-06-20 13:38:10
  * @FilePath: /mlaj/src/views/teacher/checkinPage.vue
   * @Description: 文件描述
 -->
@@ -67,7 +67,7 @@
         </div>
       </div>
 
-      <div style="padding: 0 1rem; color: #4caf50;">
+      <div class="text-wrapper" style="padding: 0 1rem; color: #4caf50;">
         <div class="text-header">学生动态</div>
         <van-list
           v-if="checkinDataList.length"

@@ -2,7 +2,7 @@
  * @Author: hookehuyr hookehuyr@gmail.com
  * @Date: 2025-01-20 10:00:00
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-06-20 10:17:50
+ * @LastEditTime: 2025-06-20 11:47:35
  * @FilePath: /mlaj/src/views/teacher/myClassPage.vue
  * @Description: 我的班级页面
 -->
@@ -30,7 +30,7 @@
       <!-- 筛选器 -->
       <div>
         <van-sticky>
-          <van-dropdown-menu active-color="#10b981">
+          <van-dropdown-menu active-color="#10b981" swipe-threshold="3">
             <van-dropdown-item v-model="gradeFilter" :options="gradeOptions" @change="handleGradeChange" />
             <van-dropdown-item v-model="classFilter" :options="classOptions" @change="handleClassChange" />
             <van-dropdown-item v-model="courseFilter" :options="courseOptions" @change="handleCourseChange" />
@@ -190,7 +190,7 @@ const gradeOptions = ref([
 
 const classOptions = ref([
   { text: '全部班级', value: '全部班级' },
-  { text: '高一(1)班', value: '高一(1)班' },
+  { text: '高一(1)班高一(1)班', value: '高一(1)班高一(1)班' },
   { text: '高一(2)班', value: '高一(2)班' },
   { text: '高一(3)班', value: '高一(3)班' }
 ])