chore: 修复大量导入路径错误

- 迁移 files API 到 shared/api/
- 修复所有 features 中的 @/api/ 导入
- 修复所有 features 中的 @/composables/ 导入
- 更新 useOrderDetail 中的 uploadFile 调用

类型错误：272 → 190 → 135

frontend/src/features/admin/views/AdminDashboardView.vue

@@ -16,8 +16,8 @@ import {
   Warning
 } from '@element-plus/icons-vue'
 import { fetchAdminDashboard, type AdminDashboard } from '@/features/admin/api/adminDashboard'
-import { useAdminTable } from '@/composables/useAdminTable'
-import { useMoney } from '@/composables/useMoney'
+import { useAdminTable } from '@/features/admin/composables/useAdminTable'
+import { useMoney } from '@/shared/composables/useMoney'
 import { disputeStatusLabel, orderStatusLabel } from '@/utils/statusLabels'
 import { formatDateTime } from '@/utils/time'