fix(frontend): auto-attach admin api keys and normalize admin list payloads

frontend/src/pages/admin/CompaniesPage.vue

@@ -65,10 +65,12 @@ async function load() {
   error.value = false
   try {
     const res = await getCompanies()
-    companies.value = res.data || []
+    companies.value = res.data?.items || []
   } catch (err) {
     error.value = true
-    errorMsg.value = '載入失敗，請稍後再試'
+    errorMsg.value = err.response?.status === 422
+      ? '缺少管理員 API 認證，請檢查前端 .env.development'
+      : '載入失敗，請稍後再試'
   } finally {
     loading.value = false
   }

frontend/src/pages/admin/MembersPage.vue

@@ -40,10 +40,12 @@ async function load() {
   error.value = false
   try {
     const res = await getMembers()
-    members.value = res.data || []
+    members.value = res.data?.items || []
   } catch (err) {
     error.value = true
-    errorMsg.value = '載入失敗，請稍後再試'
+    errorMsg.value = err.response?.status === 422
+      ? '缺少管理員 API 認證，請檢查前端 .env.development'
+      : '載入失敗，請稍後再試'
   } finally {
     loading.value = false
   }

frontend/src/pages/admin/ModulesPage.vue

@@ -70,10 +70,12 @@ async function load() {
   error.value = false
   try {
     const res = await getModules()
-    modules.value = res.data || []
+    modules.value = res.data?.items || []
   } catch (err) {
     error.value = true
-    errorMsg.value = '載入失敗，請稍後再試'
+    errorMsg.value = err.response?.status === 422
+      ? '缺少管理員 API 認證，請檢查前端 .env.development'
+      : '載入失敗，請稍後再試'
   } finally {
     loading.value = false
   }

frontend/src/pages/admin/PermissionGroupsPage.vue

@@ -145,8 +145,12 @@ async function loadGroups() {
   loadingGroups.value = true
   try {
     const res = await getPermissionGroups()
-    groups.value = res.data || []
+    groups.value = res.data?.items || []
   } catch (err) {
+    if (err.response?.status === 422) {
+      ElMessage.error('缺少管理員 API 認證，請檢查前端 .env.development')
+      return
+    }
     ElMessage.error('載入群組失敗')
   } finally {
     loadingGroups.value = false

frontend/src/pages/admin/SitesPage.vue

@@ -70,10 +70,12 @@ async function load() {
   error.value = false
   try {
     const res = await getSites()
-    sites.value = res.data || []
+    sites.value = res.data?.items || []
   } catch (err) {
     error.value = true
-    errorMsg.value = '載入失敗，請稍後再試'
+    errorMsg.value = err.response?.status === 422
+      ? '缺少管理員 API 認證，請檢查前端 .env.development'
+      : '載入失敗，請稍後再試'
   } finally {
     loading.value = false
   }

frontend/src/pages/admin/SystemsPage.vue

@@ -65,10 +65,12 @@ async function load() {
   error.value = false
   try {
     const res = await getSystems()
-    systems.value = res.data || []
+    systems.value = res.data?.items || []
   } catch (err) {
     error.value = true
-    errorMsg.value = '載入失敗，請稍後再試'
+    errorMsg.value = err.response?.status === 422
+      ? '缺少管理員 API 認證，請檢查前端 .env.development'
+      : '載入失敗，請稍後再試'
   } finally {
     loading.value = false
   }