fix: #6079 修复定时任务创建，el-radio-button用label而非value; fix: #6080 修复头像上传后不更新，使用??替代||避免空字符串问题

client/src/views/Profile/index.vue

@@ -6,7 +6,7 @@
       <el-col :span="8">
         <div class="page-card profile-card">
           <div class="avatar-section">
-            <el-avatar :size="100" :src="authStore.user?.avatarUrl || undefined">
+            <el-avatar :size="100" :src="authStore.user?.avatarUrl ?? undefined">
               {{ authStore.user?.nickname?.[0] || authStore.user?.username?.[0] }}
             </el-avatar>
             <el-upload

client/src/views/Schedule/index.vue

@@ -82,11 +82,11 @@
         </el-form-item>
         <el-form-item label="重复方式">
           <el-radio-group v-model="form.repeatType">
-            <el-radio-button value="once">仅一次</el-radio-button>
-            <el-radio-button value="daily">每天</el-radio-button>
-            <el-radio-button value="weekday">工作日</el-radio-button>
-            <el-radio-button value="weekly">每周</el-radio-button>
-            <el-radio-button value="custom">自定义</el-radio-button>
+            <el-radio-button label="once">仅一次</el-radio-button>
+            <el-radio-button label="daily">每天</el-radio-button>
+            <el-radio-button label="weekday">工作日</el-radio-button>
+            <el-radio-button label="weekly">每周</el-radio-button>
+            <el-radio-button label="custom">自定义</el-radio-button>
           </el-radio-group>
         </el-form-item>
         <el-form-item v-if="form.repeatType === 'weekly'" label="周几">