feat(teacher): 优化教师打卡和作业表单页面

- 在打卡页面添加顶部间距并区分打卡和作业按钮功能
- 重构表单页面，根据类型动态显示标题并简化代码结构
- 移除不必要的类型选择字段，默认根据路由参数设置类型

 <!--
   * @Date: 2025-05-29 15:34:17
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-06-20 10:40:58
+ * @LastEditTime: 2025-06-20 10:56:22
  * @FilePath: /mlaj/src/views/teacher/checkinPage.vue
   * @Description: 文件描述
 -->
@@ -21,13 +21,13 @@
         @select="onSelectDay"
         @click-subtitle="onClickSubtitle">
       </van-calendar>
-      <div style="padding: 0 1rem;">
+      <div style="padding: 0 1rem; margin-top: 1rem;">
         <van-row gutter="15">
           <van-col span="12">
-            <van-button type="primary" block icon="photo" @click="handleAdd">安排打卡</van-button>
+            <van-button type="primary" block icon="photo" @click="handleAdd('checkin')">安排打卡</van-button>
           </van-col>
           <van-col span="12">
-            <van-button type="primary" block icon="video">设置作业</van-button>
+            <van-button type="primary" block icon="video" @click="handleAdd('homework')">设置作业</van-button>
           </van-col>
         </van-row>
       </div>
@@ -817,12 +817,12 @@ const formatData = (data) => {
   return formattedData;
 }
 
-const handleAdd = () => {
+const handleAdd = (type) => {
   router.push({
     path: '/teacher/form',
     query: {
       post_id: route.query.id,
-      type: 'image',
+      type: type,
       status: 'add',
     }
   })