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/finance.dart

@@ -3,9 +3,11 @@ class FinanceRecord {
   final String type; // receivable | payable | receipt | payment
   final double amount;
   final double balance;
+  final String status; // open | closed
   final String? refType;
   final int? refId;
   final String? partnerName;
+  final int? partnerId;
   final String? recordDate;
   final String? remark;
 
@@ -14,9 +16,11 @@ class FinanceRecord {
     required this.type,
     required this.amount,
     required this.balance,
+    this.status = 'open',
     this.refType,
     this.refId,
     this.partnerName,
+    this.partnerId,
     this.recordDate,
     this.remark,
   });
@@ -41,11 +45,14 @@ class FinanceRecord {
         type: json['type'] as String,
         amount: (json['amount'] as num).toDouble(),
         balance: (json['balance'] as num).toDouble(),
+        status: json['status'] as String? ?? 'open',
         refType: json['ref_type'] as String?,
         refId:
             json['ref_id'] != null ? (json['ref_id'] as num).toInt() : null,
         partnerName:
             (json['partner'] as Map<String, dynamic>?)?['name'] as String?,
+        partnerId:
+            json['partner_id'] != null ? (json['partner_id'] as num).toInt() : null,
         recordDate: json['record_date'] as String?,
         remark: json['remark'] as String?,
       );