feat(client): 出入库列表按原型重建（KPI/详情抽屉/详细搜索/工具栏/选中复制/窗口尺寸）

- 列表重建：KPI 卡、状态+时间列、操作改眼睛开右侧详情抽屉、重置右置
- 详情抽屉(order_detail_drawer) 100% 还原原型 + SelectionArea 可选中复制
- 详细搜索弹窗：ComboSearchField/滚轮日期、字段重构、白底盒子按钮
- 工具栏：搜索框×清除+占位精简、供应商/客户下拉取全部、状态菜单收窄
- 加载不白屏(半透明遮罩)、输入框与下拉等高、windows/macOS 默认窗口尺寸调大

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

client/lib/providers/stock_in_provider.dart

@@ -6,6 +6,7 @@ import '../core/auth/auth_state.dart';
 import '../core/config/app_constants.dart';
 import '../core/models/page_result.dart';
 import '../models/stock_in.dart';
+import '../models/stock_summary.dart';
 import '../repositories/stock_in_repository.dart';
 import 'connectivity_provider.dart';
 import 'inventory_provider.dart';
@@ -19,6 +20,13 @@ final stockInListProvider =
   StockInListNotifier.new,
 );
 
+/// 入库 KPI 汇总（换店/网络恢复自动刷新）。
+final stockInSummaryProvider = FutureProvider.autoDispose<StockSummary>((ref) {
+  ref.watch(authStateProvider.select((s) => s.user?.shopId));
+  ref.watch(networkRecoveryCountProvider);
+  return ref.read(stockInRepositoryProvider).summary();
+});
+
 class StockInListNotifier extends AsyncNotifier<PageResult<StockInOrder>> {
   int _page = 1;
   int _pageSize = AppConstants.defaultPageSize;
@@ -26,6 +34,7 @@ class StockInListNotifier extends AsyncNotifier<PageResult<StockInOrder>> {
   String? _startDate;
   String? _endDate;
   String _keyword = '';
+  Map<String, String> _detail = const {};
   PageResult<StockInOrder>? _cache;
   Timer? _searchDebounce;
 
@@ -50,11 +59,21 @@ class StockInListNotifier extends AsyncNotifier<PageResult<StockInOrder>> {
           startDate: _startDate,
           endDate: _endDate,
           keyword: _keyword.isEmpty ? null : _keyword,
+          detail: _detail.isEmpty ? null : _detail,
           page: _page,
           pageSize: _pageSize,
         );
   }
 
+  Map<String, String> get currentDetail => _detail;
+
+  /// 详细搜索多字段（order_no/partner_id/series/spec/category_id/... → 后端组合 AND）。
+  void setDetail(Map<String, String> detail) {
+    _detail = detail;
+    _page = 1;
+    reload();
+  }
+
   void setPage(int page) {
     _page = page;
     reload();
@@ -98,7 +117,9 @@ class StockInListNotifier extends AsyncNotifier<PageResult<StockInOrder>> {
   }
 
   void reload() {
-    state = const AsyncValue.loading();
+    // 保留上一次数据（isReloading）→ 屏幕可继续渲染旧内容 + 叠加半透明进度，不白屏。
+    state = const AsyncValue<PageResult<StockInOrder>>.loading()
+        .copyWithPrevious(state);
     _fetch().then((result) {
       _cache = result;
       state = AsyncValue.data(result);