feat(admin): add delete APIs and UI actions for all admin resources

src/pages/admin/SystemsPage.vue

@@ -26,6 +26,7 @@
           <el-button size="small" @click="openEdit(row)">編輯</el-button>
           <el-button size="small" @click="openRelations(row, 'groups')">群組</el-button>
           <el-button size="small" @click="openRelations(row, 'members')">會員</el-button>
+          <el-button size="small" type="danger" @click="handleDelete(row)">刪除</el-button>
         </template>
       </el-table-column>
     </el-table>
@@ -94,9 +95,9 @@
 
 <script setup>
 import { ref, onMounted } from 'vue'
-import { ElMessage } from 'element-plus'
+import { ElMessage, ElMessageBox } from 'element-plus'
 import { Plus } from '@element-plus/icons-vue'
-import { getSystems, createSystem, updateSystem, getSystemGroups, getSystemMembers } from '@/api/systems'
+import { getSystems, createSystem, updateSystem, deleteSystem, getSystemGroups, getSystemMembers } from '@/api/systems'
 
 const systems = ref([])
 const loading = ref(false)
@@ -188,6 +189,18 @@ async function handleEdit() {
   }
 }
 
+async function handleDelete(row) {
+  try {
+    await ElMessageBox.confirm(`確認刪除系統 ${row.name}（${row.system_key}）？`, '刪除確認', { type: 'warning' })
+    await deleteSystem(row.system_key)
+    ElMessage.success('刪除成功')
+    await load()
+  } catch (err) {
+    if (err === 'cancel') return
+    ElMessage.error(err.response?.data?.detail || '刪除失敗')
+  }
+}
+
 async function openRelations(row, tab) {
   relationSystemKey.value = row.system_key
   relationTab.value = tab