style(ops-web): unify table actions as circular icon buttons

Replace the mixed text-link / button action lists in Accounts,
AdminUsers, and SiteDomainMappings with a shared .table-actions-row +
.action-* class set in styles.css. Each row now renders compact icon
buttons (edit/delete/approve/revoke/key/kol/reset/play) tinted by intent,
matching the new KolSubscriptions console look.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/ops-web/src/views/SiteDomainMappingsView.vue

@@ -70,20 +70,20 @@
             {{ formatDate(record.updated_at) }}
           </template>
           <template v-else-if="column.key === 'actions'">
-            <a-space :size="4">
+            <div class="table-actions-row" style="justify-content: flex-end;">
               <a-tooltip title="编辑">
-                <a-button type="text" size="small" @click="openEdit(record)">
-                  <template #icon><EditOutlined /></template>
+                <a-button type="text" shape="circle" size="small" class="action-btn action-edit" @click="openEdit(record)">
+                  <EditOutlined />
                 </a-button>
               </a-tooltip>
-              <a-popconfirm title="确认删除该映射？" @confirm="deleteMapping(record)">
-                <a-tooltip title="删除">
-                  <a-button type="text" danger size="small">
-                    <template #icon><DeleteOutlined /></template>
+              <a-tooltip title="删除">
+                <a-popconfirm title="确认删除该映射？" @confirm="deleteMapping(record)">
+                  <a-button type="text" shape="circle" size="small" class="action-btn action-delete">
+                    <DeleteOutlined />
                   </a-button>
-                </a-tooltip>
-              </a-popconfirm>
-            </a-space>
+                </a-popconfirm>
+              </a-tooltip>
+            </div>
           </template>
         </template>
       </a-table>