[h5-forge] 架构设计师：结构已冻结，允许进入实现。

```yaml
checklist:
  module_layout:
    - "src/features/order/pages/order_list_page.tsx"
    - "src/features/order/widgets/order_card.tsx"
    - "src/features/order/providers/order_list_provider.tsx"
  state_management: "Riverpod StateNotifier + AsyncValue"
  routing: "go_router 新增 /orders 路由，挂在 ShellRoute 下"
  freeze_constraints:
    - "order_list_provider 只暴露 AsyncValue<List<Order>>"
    - "筛选状态由 StateProvider 管理，不进 StateNotifier"
  reuse_strategy:
    - "复用现有 OrderCard 组件，增加状态标签"
    - "复用 Paginatedlist container 公共组件"
  write_scope:
    - "src/features/order/"
    - "src/router/app_router.tsx（仅新增路由条目）"
  decision: allow
```
