feat(client): 库存/盘点/财务窄屏对齐移动原型（KPI 网格/卡片流/图标徽章/sheet）

- 库存列表：窄屏隐藏页内大标题头；KPI 2×2 MKpiGrid（缺货卡 warn+点击筛选）；
  MSearchRow（详搜钮开筛选 sheet：状态/规格/系列）；卡片徽章换图标变体
- 库存盘点：窄屏卡片流（单号/范围·项数/进行中徽章带图标/差异/日期）+
  详情 sheet（drow 键值行）+ 底部操作条；DateTime.now→appNow 可注入时钟
- 财务：窄屏隐藏大标题头；KPI 2×2（收入 up 绿/支出 down 红/应收 warn）；
  DsSeg 应收/应付/流水三分段 + 卡片流（类型徽章带图标、金额正负色）
- golden：新增 m_inventory / m_inventory_check / m_finance 三屏×三主题
  （390×844@2x）；重生成既有 inventory_list_mobile / finance_mobile 基准
  （桌面 golden 零改动）

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

client/test/golden/finance_mobile_golden_test.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:jiu_client/core/auth/auth_state.dart';
+import 'package:jiu_client/core/models/page_result.dart';
+import 'package:jiu_client/core/utils/clock.dart';
+import 'package:jiu_client/models/finance.dart';
+import 'package:jiu_client/models/stock_summary.dart';
+import 'package:jiu_client/providers/finance_provider.dart';
+import 'package:jiu_client/providers/stock_in_provider.dart';
+import 'package:jiu_client/providers/stock_out_provider.dart';
+import 'package:jiu_client/screens/finance/finance_screen.dart';
+
+import '../support/golden_harness.dart';
+
+/// 财务管理 窄屏形态 golden × 三主题（390×844 @2x）——对齐原型 m-finance.html：
+/// 隐藏页内大标题头 + KPI 2×2（收入 up 绿 / 支出 down 红）+ DsSeg 三分段
+/// + 应收卡片流（往来单位 + 金额 + 未结清徽章带图标）。fixtures 与桌面 golden 同套。
+/// 更新基准：flutter test --update-goldens test/golden/finance_mobile_golden_test.dart
+
+// 原型 SUMMARY 8 行
+const _rows = [
+  PartnerFinanceRow(partnerId: 1, name: '华东酒类批发', recv: 128400, openCount: 2),
+  PartnerFinanceRow(partnerId: 2, name: '金樽商贸', recv: 86200, openCount: 1),
+  PartnerFinanceRow(partnerId: 3, name: '茅台华南经销', pay: 142800, openCount: 1),
+  PartnerFinanceRow(partnerId: 4, name: '鸿运餐饮连锁', recv: 74600, openCount: 1),
+  PartnerFinanceRow(partnerId: 5, name: '五粮液省级代理', pay: 96400, openCount: 1),
+  PartnerFinanceRow(
+      partnerId: 6, name: '盛世名酒城', recv: 52300, pay: 18600, openCount: 2),
+  PartnerFinanceRow(partnerId: 7, name: '御品烟酒行', recv: 31800, openCount: 1),
+  PartnerFinanceRow(partnerId: 8, name: '川渝糖酒集团', pay: 60400, openCount: 1),
+];
+
+// 原型 FLOWS 前 5 条（流水分段用；390×844 首屏展示应收卡片流）
+const _flows = [
+  FinanceRecord(
+      id: 1,
+      type: 'receipt',
+      amount: 68000,
+      balance: 0,
+      status: 'closed',
+      partnerName: '华东酒类批发',
+      recordDate: '2026-06-20',
+      remark: '飞天茅台货款'),
+  FinanceRecord(
+      id: 2,
+      type: 'payment',
+      amount: 142800,
+      balance: 0,
+      status: 'closed',
+      partnerName: '茅台华南经销',
+      recordDate: '2026-06-19',
+      remark: '6月采购结算'),
+  FinanceRecord(
+      id: 3,
+      type: 'receipt',
+      amount: 42600,
+      balance: 0,
+      status: 'closed',
+      partnerName: '金樽商贸',
+      recordDate: '2026-06-18',
+      remark: '五粮液尾款'),
+  FinanceRecord(
+      id: 4,
+      type: 'receipt',
+      amount: 31500,
+      balance: 0,
+      status: 'closed',
+      partnerName: '鸿运餐饮连锁',
+      recordDate: '2026-06-17',
+      remark: '宴会用酒'),
+  FinanceRecord(
+      id: 5,
+      type: 'payment',
+      amount: 96400,
+      balance: 0,
+      status: 'closed',
+      partnerName: '五粮液省级代理',
+      recordDate: '2026-06-16',
+      remark: '普五补货'),
+];
+
+class _FakeFinanceList extends FinanceListNotifier {
+  @override
+  Future<PageResult<FinanceRecord>> build() async =>
+      const PageResult(data: _flows, total: 5, page: 1, pageSize: 50);
+  @override
+  void setType(String type) {}
+  @override
+  void setMonth(String month) {}
+  @override
+  void setRange(String startDate, String endDate) {}
+  @override
+  void setPage(int page) {}
+  @override
+  void setPageSize(int pageSize) {}
+  @override
+  void reload() {}
+}
+
+List<Override> _overrides() => [
+      financeListProvider.overrideWith(() => _FakeFinanceList()),
+      financePartnerRowsProvider.overrideWith((ref) async => _rows),
+      // 环比凑成原型 ▲8.4% / ▼3.1%
+      stockOutSummaryProvider.overrideWith((ref) async =>
+          const StockSummary(monthAmount: 1860000, lastMonthAmount: 1715867)),
+      stockInSummaryProvider.overrideWith((ref) async =>
+          const StockSummary(monthAmount: 1320000, lastMonthAmount: 1362229)),
+      isReadonlyProvider.overrideWithValue(false),
+    ];
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+  SharedPreferences.setMockInitialValues({});
+  appClock = () => DateTime(2026, 7, 13, 9, 30, 15);
+
+  goldenAcrossThemes(
+    'finance 窄屏（m-finance）',
+    goldenPrefix: 'm_finance',
+    child: () => const Scaffold(body: FinanceScreen()),
+    overrides: _overrides,
+    logical: const Size(390, 844),
+    dpr: 2,
+  );
+}

client/test/golden/inventory_check_mobile_golden_test.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:jiu_client/core/utils/clock.dart';
+import 'package:jiu_client/models/warehouse.dart';
+import 'package:jiu_client/providers/warehouse_provider.dart';
+import 'package:jiu_client/screens/inventory/inventory_check_screen.dart';
+
+import '../support/golden_harness.dart';
+
+/// 库存盘点 窄屏形态 golden × 三主题（390×844 @2x）——对齐原型 m-inventory-check.html
+/// 粒度：基本信息卡 + 「盘点单」卡片流（单号/范围·项数/进行中徽章带图标/差异/日期）
+/// + 底部操作条（取消/提交盘点）。时钟冻结保证单号/日期确定化。
+/// 更新基准：flutter test --update-goldens test/golden/inventory_check_mobile_golden_test.dart
+
+const _warehouses = [
+  Warehouse(id: 1, name: '主仓', isDefault: true),
+  Warehouse(id: 2, name: '东库', isDefault: false),
+];
+
+class _FakeWarehouses extends WarehouseListNotifier {
+  @override
+  Future<List<Warehouse>> build() async => _warehouses;
+}
+
+List<Override> _overrides() => [
+      warehouseListProvider.overrideWith(() => _FakeWarehouses()),
+    ];
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+  appClock = () => DateTime(2026, 6, 20, 9, 30, 15);
+
+  goldenAcrossThemes(
+    'inventory check 窄屏（m-inventory-check）',
+    goldenPrefix: 'm_inventory_check',
+    child: () => const InventoryCheckScreen(),
+    overrides: _overrides,
+    logical: const Size(390, 844),
+    dpr: 2,
+  );
+}

client/test/golden/inventory_list_mobile_golden_test.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:jiu_client/core/models/page_result.dart';
+import 'package:jiu_client/core/auth/auth_state.dart';
+import 'package:jiu_client/models/inventory.dart';
+import 'package:jiu_client/models/product_option.dart';
+import 'package:jiu_client/providers/inventory_provider.dart';
+import 'package:jiu_client/providers/product_option_provider.dart';
+import 'package:jiu_client/screens/inventory/inventory_list_screen.dart';
+
+import '../support/golden_harness.dart';
+
+/// 库存列表 窄屏形态 golden × 三主题（390×844 @2x）——对齐原型 m-inventory.html：
+/// 隐藏页内大标题头 + KPI 2×2 MKpiGrid（缺货卡 warn）+ MSearchRow + 卡片流图标徽章。
+/// 更新基准：flutter test --update-goldens test/golden/inventory_list_mobile_golden_test.dart
+
+// 原型 ITEMS 前 10 行（与桌面 golden 同套 fixtures）。
+const _items = [
+  Inventory(
+    id: 1,
+    productId: 1,
+    quantity: 128,
+    productCode: 'MT-FT-500',
+    productName: '茅台 飞天 53°',
+    series: '飞天',
+    spec: '500ml×6',
+    unit: '件',
+    warehouseName: '主仓',
+    unitPrice: 2680,
+    salePrice: 2680,
+    productionDate: '2024-07-11',
+    batchNo: 'PZ240711',
+    supplierName: '贵州茅台经销',
+    minStock: 10,
+    createdAt: '2026-06-14',
+  ),
+  Inventory(
+    id: 2,
+    productId: 2,
+    quantity: 64,
+    productCode: 'WLY-PW-500',
+    productName: '五粮液 普五 52°',
+    series: '普五',
+    spec: '500ml×6',
+    unit: '件',
+    warehouseName: '主仓',
+    unitPrice: 1050,
+    salePrice: 1050,
+    productionDate: '2024-04-28',
+    batchNo: 'PZ240428',
+    supplierName: '宜宾五粮液',
+    minStock: 10,
+    createdAt: '2026-06-14',
+  ),
+  Inventory(
+    id: 3,
+    productId: 3,
+    quantity: 8,
+    productCode: 'JNC-SJ-500',
+    productName: '剑南春 水晶剑',
+    series: '水晶剑',
+    spec: '500ml×6',
+    unit: '件',
+    warehouseName: '主仓',
+    unitPrice: 438,
+    salePrice: 438,
+    productionDate: '2023-11-15',
+    batchNo: 'PZ231115',
+    supplierName: '绵竹剑南春',
+    minStock: 10,
+    createdAt: '2026-06-12',
+  ),
+  Inventory(
+    id: 8,
+    productId: 8,
+    quantity: 0,
+    productCode: 'FJ-QH20-500',
+    productName: '汾酒 青花 20',
+    series: '青花20',
+    spec: '500ml×6',
+    unit: '件',
+    warehouseName: '主仓',
+    unitPrice: 420,
+    salePrice: 420,
+    productionDate: '2024-01-12',
+    batchNo: 'PZ240112',
+    supplierName: '山西杏花村',
+    minStock: 10,
+    createdAt: '2026-06-03',
+  ),
+  Inventory(
+    id: 4,
+    productId: 4,
+    quantity: 42,
+    productCode: 'GJ-1573-500',
+    productName: '国窖 1573',
+    series: '1573',
+    spec: '500ml×6',
+    unit: '件',
+    warehouseName: '主仓',
+    unitPrice: 980,
+    salePrice: 980,
+    productionDate: '2024-02-08',
+    batchNo: 'PZ240208',
+    supplierName: '泸州老窖',
+    minStock: 10,
+    createdAt: '2026-06-10',
+  ),
+  Inventory(
+    id: 5,
+    productId: 5,
+    quantity: 23,
+    productCode: 'YH-M6-500',
+    productName: '洋河 梦之蓝 M6',
+    series: '梦之蓝M6',
+    spec: '550ml×6',
+    unit: '件',
+    warehouseName: '主仓',
+    unitPrice: 620,
+    salePrice: 620,
+    productionDate: '2024-05-20',
+    batchNo: 'PZ240520',
+    supplierName: '洋河股份',
+    minStock: 30,
+    createdAt: '2026-06-09',
+  ),
+];
+
+class _FakeInvNotifier extends InventoryListNotifier {
+  @override
+  Future<PageResult<Inventory>> build() async =>
+      const PageResult(data: _items, total: 6, page: 1, pageSize: 10);
+  @override
+  void setPage(int page) {}
+  @override
+  void setPageSize(int pageSize) {}
+  @override
+  void setWarehouseId(int? id) {}
+  @override
+  void setKeyword(String keyword) {}
+  @override
+  void setCode(String code) {}
+  @override
+  void setSeries(List<String> series) {}
+  @override
+  void setSpec(List<String> spec) {}
+  @override
+  void reload() {}
+}
+
+class _FakeSeriesNotifier extends ProductSeriesListNotifier {
+  @override
+  Future<List<ProductSeriesOption>> build() async => const [];
+}
+
+class _FakeSpecNotifier extends ProductSpecListNotifier {
+  @override
+  Future<List<ProductSpecOption>> build() async => const [];
+}
+
+List<Override> _overrides() => [
+      inventoryListProvider.overrideWith(() => _FakeInvNotifier()),
+      productSeriesListProvider.overrideWith(() => _FakeSeriesNotifier()),
+      productSpecListProvider.overrideWith(() => _FakeSpecNotifier()),
+      isReadonlyProvider.overrideWithValue(false),
+      inventorySummaryProvider.overrideWith((ref) => const InventorySummary(
+            skuCount: 1284,
+            stockValue: 2640000,
+            inStockQty: 18920,
+            shortageCount: 17,
+            warningCount: 6,
+            lastMonthSku: 1255,
+            lastMonthValue: 2611276,
+            lastMonthQty: 19034,
+          )),
+    ];
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+  SharedPreferences.setMockInitialValues({});
+
+  goldenAcrossThemes(
+    'inventory list 窄屏（m-inventory）',
+    goldenPrefix: 'm_inventory',
+    child: () => const Scaffold(body: InventoryListScreen()),
+    overrides: _overrides,
+    logical: const Size(390, 844),
+    dpr: 2,
+  );
+}