style(F006-W17.7): list 页表头统一居中显示

- DataTable 组件 header-cell-style textAlign: left → center (覆盖大多数 list 页)
- 3 个裸 el-table list 页补 header-cell-style (categoryGood/region/coupon)
- 单元格内容对齐不变 (仍 left), 只动表头

src/components/DataTable/DataTable.vue

@@ -113,7 +113,7 @@ function onLimitChange(l: number) { emit('limit-change', l) }
         textTransform: 'uppercase',
         letterSpacing: '0.04em',
         whiteSpace: 'nowrap',
-        textAlign: 'left',
+        textAlign: 'center',
         lineHeight: '20px'
       }"
       :cell-style="{

src/modules/other/categoryGood/CategoryGoodListView.vue

@@ -167,6 +167,7 @@ onMounted(load)
         borderless
         empty-text="暂无分类"
         class="cat-table"
+        :header-cell-style="{ textAlign: 'center' }"
         @selection-change="onSelectionChange"
       >
         <el-table-column type="selection" width="50" />

src/modules/supplier/coupon/CouponListView.vue

@@ -139,7 +139,7 @@ onMounted(load)
     />
 
     <div class="rr-card">
-      <el-table :data="list" border style="width: 100%" v-loading="loading" :empty-text="error || '暂无优惠券'" @selection-change="onSelectionChange" row-key="id">
+      <el-table :data="list" border style="width: 100%" v-loading="loading" :empty-text="error || '暂无优惠券'" @selection-change="onSelectionChange" row-key="id" :header-cell-style="{ textAlign: 'center' }">
         <el-table-column type="selection" width="50" align="center" />
         <el-table-column type="index" label="#" width="50" align="center" />
         <el-table-column prop="name" label="优惠券名称" min-width="180" show-overflow-tooltip />

src/modules/sys/region/RegionListView.vue

@@ -127,6 +127,7 @@ onMounted(load)
         borderless
         empty-text="暂无行政区划"
         class="region-table"
+        :header-cell-style="{ textAlign: 'center' }"
       >
         <el-table-column prop="name" label="名称" min-width="200" />
         <el-table-column prop="id" label="区划代码" min-width="140" />