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/repositories/stock_in_repository.dart

@@ -3,6 +3,7 @@ import '../core/api/api_client.dart';
 import '../core/exceptions.dart';
 import '../core/models/page_result.dart';
 import '../models/stock_in.dart';
+import '../models/stock_summary.dart';
 
 class StockInRepository {
   final ApiClient _client;
@@ -14,6 +15,7 @@ class StockInRepository {
     String? startDate,
     String? endDate,
     String? keyword,
+    Map<String, String>? detail,
     int page = 1,
     int pageSize = 20,
   }) async {
@@ -25,6 +27,7 @@ class StockInRepository {
         if (startDate != null) 'start_date': startDate,
         if (endDate != null) 'end_date': endDate,
         if (keyword != null && keyword.isNotEmpty) 'keyword': keyword,
+        if (detail != null) ...detail, // 详细搜索多字段
       };
       final resp = await _client.get('/stock-in/orders', params: params);
       return PageResult.fromJson(
@@ -39,6 +42,19 @@ class StockInRepository {
     }
   }
 
+  /// 入库 KPI 汇总（本月笔数/金额 + 上月同期 + 待审核）。
+  Future<StockSummary> summary() async {
+    try {
+      final resp = await _client.get('/stock-in/summary');
+      return StockSummary.fromJson(resp.data as Map<String, dynamic>);
+    } on DioException catch (e) {
+      throw AppException(
+        e.response?.data?['error'] as String? ?? '获取入库汇总失败',
+        statusCode: e.response?.statusCode,
+      );
+    }
+  }
+
   Future<StockInOrder> get(int id) async {
     try {
       final resp = await _client.get('/stock-in/orders/$id');