feat(contract): 新增合同发票管理功能

实现合同发票的增删改查功能，包括：
1. 添加ContractInvoiceVo实体类及相关ViewModel
2. 创建合同发票数据库表CONTRACT_INVOICE
3. 实现前后端发票管理服务ContractInvoiceService
4. 开发发票管理界面及标签页
5. 添加发票表格单元格组件
6. 完善销售订单表结构，增加客户联系人字段
7. 更新pom.xml版本至0.0.122-SNAPSHOT

修复销售订单界面搜索字段命名不一致问题

client/src/main/java/com/ecep/contract/service/ContractInvoiceService.java

@@ -0,0 +1,67 @@
+package com.ecep.contract.service;
+
+import org.springframework.cache.annotation.CacheConfig;
+import org.springframework.cache.annotation.CacheEvict;
+import org.springframework.cache.annotation.Cacheable;
+import org.springframework.cache.annotation.Caching;
+import org.springframework.stereotype.Service;
+
+import com.ecep.contract.vm.ContractInvoiceViewModel;
+import com.ecep.contract.vo.ContractInvoiceVo;
+
+@Service
+@CacheConfig(cacheNames = "contract-invoice")
+public class ContractInvoiceService extends QueryService<ContractInvoiceVo, ContractInvoiceViewModel> {
+
+    @Cacheable(key = "#p0")
+    @Override
+    public ContractInvoiceVo findById(Integer id) {
+        return super.findById(id);
+    }
+
+    @Caching(evict = {
+            @CacheEvict(key = "#p0.id"),
+            @CacheEvict(key = "'code-'+#p0.code")
+    })
+    public ContractInvoiceVo save(ContractInvoiceVo invoice) {
+        return super.save(invoice);
+    }
+
+    @Caching(evict = {
+            @CacheEvict(key = "#p0.id"),
+            @CacheEvict(key = "'code-'+#p0.code")
+    })
+    public void delete(ContractInvoiceVo invoice) {
+        super.delete(invoice);
+    }
+
+    @Cacheable(key = "'code-'+#p0")
+    public ContractInvoiceVo findByCode(String code) {
+        try {
+            return async("findByCode", code, String.class).handle((response, ex) -> {
+                if (ex != null) {
+                    throw new RuntimeException("远程方法+findByCode+调用失败", ex);
+                }
+                if (response != null) {
+                    return updateValue(createNewEntity(), response);
+                }
+                return null;
+            }).get();
+        } catch (Exception e) {
+            throw new RuntimeException("查找合同发票 " + code + " 时发生错误", e);
+        }
+    }
+
+    public ContractInvoiceVo findByContractId(Integer contractId) {
+        try {
+            return async("findByContractId", contractId, Integer.class).handle((response, ex) -> {
+                if (response != null) {
+                    return updateValue(createNewEntity(), response);
+                }
+                return null;
+            }).get();
+        } catch (Exception e) {
+            throw new RuntimeException("查找合同ID为 " + contractId + " 的发票时发生错误", e);
+        }
+    }
+}