feat: 财务结清、酒行信息、库存备注编辑、标签溯源、入库必填校验

后端
- 新增 shop handler：GET/PUT /shop/info（管理员权限）
- 新增 finance CloseByRef：按单据 ref_type+ref_id 结清账款
- 新增 inventory UpdateRemark：PUT /inventory/:id/remark
- 入库/出库审批自动生成财务应付/应收记录（去除金额>0限制）
- 种子数据 S001-S003 补充真实门店信息

前端
- 设置页新增「酒行信息」Tab，管理员可编辑门店名称/地址/电话/负责人
- 入库单列表新增结清按钮（含确认弹窗），出库单同步
- 入库表单：规格、系列、生产日期、供应商、商品名称改为提交必填
- 入库/出库列表新增入库时间、出库时间、创建时间列
- 商品标签标题改为读取 shop 表门店名，扫码文案改为「扫码溯源 · TRACE」
- 标签页脚显示门店地址和电话（从 API 读取，不再依赖编译时 dart-define）
- 库存备注支持点击编辑，超4字截断显示+Hover展示全文
- ApiClient 新增 patch() 方法（已改用 PUT 规避 CORS）

文档
- 新增 docs/user-manual.md 完整用户操作手册（12章）

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

client/lib/models/stock_in.dart

@@ -5,6 +5,7 @@ class StockInItem {
   final double unitPrice;
   final double totalPrice;
   final String? batchNo;
+  final String? productionDate;
   // Denormalized for display
   final String? productName;
   final String? productCode;
@@ -19,6 +20,7 @@ class StockInItem {
     required this.unitPrice,
     required this.totalPrice,
     this.batchNo,
+    this.productionDate,
     this.productName,
     this.productCode,
     this.productSeries,
@@ -35,6 +37,7 @@ class StockInItem {
         unitPrice: (json['unit_price'] as num).toDouble(),
         totalPrice: (json['total_price'] as num).toDouble(),
         batchNo: json['batch_no'] as String?,
+        productionDate: json['production_date'] as String?,
         productName: (json['product'] as Map<String, dynamic>?)?['name'] as String?,
         productCode: (json['product'] as Map<String, dynamic>?)?['code'] as String?,
         productSeries: (json['product'] as Map<String, dynamic>?)?['series'] as String?,
@@ -48,6 +51,7 @@ class StockInItem {
         'unit_price': unitPrice,
         'total_price': totalPrice,
         if (batchNo != null) 'batch_no': batchNo,
+        if (productionDate != null) 'production_date': productionDate,
       };
 }
 
@@ -65,6 +69,7 @@ class StockInOrder {
   final String? reviewerName;
   final String status; // draft | pending | approved | rejected
   final String? orderDate;
+  final String? reviewedAt;
   final double? totalAmount;
   final String? remark;
   final List<StockInItem> items;
@@ -83,6 +88,7 @@ class StockInOrder {
     this.reviewerName,
     required this.status,
     this.orderDate,
+    this.reviewedAt,
     this.totalAmount,
     this.remark,
     this.items = const [],
@@ -108,6 +114,7 @@ class StockInOrder {
         reviewerName: (json['reviewer'] as Map<String, dynamic>?)?['real_name'] as String?,
         status: json['status'] as String,
         orderDate: json['order_date'] as String?,
+        reviewedAt: json['reviewed_at'] as String?,
         totalAmount: json['total_amount'] != null
             ? (json['total_amount'] as num).toDouble()
             : null,