style(api): 优化条件判断提升代码可读性

- 合并多行的contentType判断条件为一行
- 避免不必要的多行缩进和换行

style(components): 精简模板和代码格式

- 将CommonCheckboxSingle标签内容内联，减少多余换行
- 简化computedChecked计算属性的条件表达式
- 统一CommonCheckboxSingle的插槽写法，增加可读性

src/api/index.ts

@@ -60,11 +60,7 @@ const createService = (baseURL: string) => {
                         }
                         return json
                     }
-                } else if (
-                    contentType.includes('xml') ||
-                    contentType.includes('text/html') ||
-                    contentType.includes('text/plain')
-                ) {
+                } else if (contentType.includes('xml') || contentType.includes('text/html') || contentType.includes('text/plain')) {
                     return await response.text()
                 } else {
                     const isBinary =

src/components/CommonCheckboxSingle.vue

 <template>
-    <n-checkbox
-        :checked="computedChecked"
-        :disabled="disabled"
-        :indeterminate="indeterminate"
-        v-bind="$attrs"
-        @update:checked="handleUpdateChecked"
-    >
+    <n-checkbox :checked="computedChecked" :disabled="disabled" :indeterminate="indeterminate" v-bind="$attrs" @update:checked="handleUpdateChecked">
         <slot>{{ label }}</slot>
     </n-checkbox>
 </template>
@@ -74,9 +68,7 @@ const normalizeValue = (v: any) => {
  */
 const computedChecked = computed(() => {
     // 依次判断绑定的属性
-    const val = props.modelValue !== undefined 
-        ? props.modelValue 
-        : (props.value !== undefined ? props.value : props.checked)
+    const val = props.modelValue !== undefined ? props.modelValue : props.value !== undefined ? props.value : props.checked
 
     if (val === undefined || val === null) {
         return false

src/views/editor/components/NodeTree/components/BatchDeleteConfirmModal/index.vue

@@ -31,7 +31,9 @@
                         <n-icon><checkmark-circle-outline /></n-icon>
                         可安全删除的节点 ({{ safeNodes.length }} 个)：
                     </span>
-                    <CommonCheckboxSingle :checked="isAllChecked" :indeterminate="isIndeterminate" @update:checked="toggleCheckAll">全选</CommonCheckboxSingle>
+                    <CommonCheckboxSingle :checked="isAllChecked" :indeterminate="isIndeterminate" @update:checked="toggleCheckAll">
+                        全选
+                    </CommonCheckboxSingle>
                 </div>
                 <CommonNodeDetailList
                     :items="formattedSafeNodes"