feat(教师表单): 重构作业类型选择并添加提交频率设置

- 将硬编码的作业类型选项改为从接口获取的动态数据
- 添加每周期提交数量的设置功能
- 调整表单布局，优化用户体验

@@ -46,15 +46,21 @@
                 <div v-if="$route.query.type === 'homework'" class="mb-4">
                   <label class="setting-label">作业类型</label>
                   <van-checkbox-group v-model="formData.attachment_type" direction="horizontal" checked-color="#4caf50" icon-size="15px">
-                    <van-checkbox name="image" shape="square"><span class="text-sm">图文打卡</span></van-checkbox>
-                    <van-checkbox name="video" shape="square"><span class="text-sm">视频打卡</span></van-checkbox>
-                    <van-checkbox name="audio" shape="square"><span class="text-sm">音频打卡</span></van-checkbox>
+                    <van-checkbox 
+                      v-for="option in attachmentTypeOptions" 
+                      :key="option.name" 
+                      :name="option.name" 
+                      shape="square"
+                    >
+                      <span class="text-sm">{{ option.text }}</span>
+                    </van-checkbox>
                   </van-checkbox-group>
                 </div>
-
-                <van-row gutter="10">
-                  <van-col span="12">
-                    <label class="setting-label">{{ pageTitle === '设置作业' ? '作业' : '打卡' }}周期</label>
+                
+                <!-- 作业周期 -->
+                <van-row gutter="10" class="mb-4">
+                  <van-col span="24">
+                    <label class="setting-label">{{ pageTitle === '设置作业' ? '作业' : '打卡' }}频次</label>
                     <van-field
                       v-model="formData.cycle_text"
                       is-link
@@ -66,6 +72,24 @@
                       class="cycle-field"
                     />
                   </van-col>
+                </van-row>
+                
+                <!-- 每周期提交数量和目标总数 -->
+                <van-row gutter="10">
+                  <van-col span="12">
+                    <label class="setting-label">每周期提交数量</label>
+                    <div class="target-count-container">
+                      <van-stepper
+                        v-model="formData.frequency"
+                        min="1"
+                        max="100"
+                        integer
+                        button-size="24px"
+                        input-width="50%"
+                      />
+                      <span class="target-unit">次</span>
+                    </div>
+                  </van-col>
                   <van-col span="12">
                     <label class="setting-label">目标总数</label>
                     <div class="target-count-container">
@@ -358,7 +382,8 @@ const formData = ref({
   class_name: '',
   class_id: '',
   // group_name: ''
-  attachment_type: [] // 作品类型数组，用于设置作业时的多选
+  attachment_type: [], // 作品类型数组，用于设置作业时的多选
+  frequency: 1 // 每周期提交数量
 });
 
 // 加载状态
@@ -384,6 +409,9 @@ const maxDate = new Date(2035, 11, 31);
 
 const cycleOptions = ref([]);
 
+// 作品类型选项 - 从接口获取
+const attachmentTypeOptions = ref([]);
+
 // 搜索值
 const courseSearchValue = ref('');
 const chapterSearchValue = ref('');
@@ -852,6 +880,15 @@ onMounted(async () => {
       text,
       value: String(value) // 确保值为字符串类型
     }));
+    
+    // 处理作品类型数据
+    if (data.task_attachment_type) {
+      attachmentTypeOptions.value = Object.entries(data.task_attachment_type).map(([key, value]) => ({
+        name: key, // 提交给后台的值
+        text: value // 显示的文本
+      }));
+    }
+    
     grades.value = data.grade_list.map(grade => ({
       name: grade.grade_name,
       id: String(grade.id)