重构：Phase 3 - 继续拆分剩余大页面

- 拆分 KuaishouCloudClaimView (839行→6个子组件+1个composable)
- 拆分 AdminInventoryView (789行→4个子组件+2个composable)
- 拆分 AdminUsersView (515行→3个子组件+1个composable)
- 拆分 AdminPlatformKuaishouEticketSection (654行→4个子组件)
- 拆分 AdminPlatformNotificationSection (548行→4个子组件)
- 拆分 AdminPlatformCloudtentaclesSection (455行→4个子组件+composable瘦身)
- 拆分 AdminManualRedeemView (482行→3个子组件+1个composable)
- 修复 CSS 引用路径问题

所有改动通过 vue-tsc --noEmit 和 vite build 验证

apps/frontend/src/views/admin/inventory/AdminInventoryView.vue

@@ -144,5 +144,5 @@ const {
 </template>
 
 <style scoped>
-@import '../../styles/admin-list-pages.css';
+@import '../../../styles/admin-list-pages.css';
 </style>

apps/frontend/src/views/admin/users/AdminUsersView.vue

@@ -88,5 +88,5 @@ const {
 </template>
 
 <style scoped>
-@import '../../styles/admin-list-pages.css';
+@import '../../../styles/admin-list-pages.css';
 </style>