refactor(vo): 重构VO对象结构，统一字段命名和接口实现

重构所有VO对象，统一字段命名规范，移除冗余字段，优化接口实现
新增Voable接口用于VO对象转换
调整BaseViewModel和ProjectBasedViewModel接口定义
更新相关服务和控制器以适应VO对象变更

common/src/main/java/com/ecep/contract/model/Invoice.java

@@ -7,6 +7,7 @@ import java.util.Objects;
 import org.springframework.util.StringUtils;
 
 import com.ecep.contract.util.HibernateProxyUtils;
+import com.ecep.contract.vo.InvoiceVo;
 
 import jakarta.persistence.Column;
 import jakarta.persistence.Entity;
@@ -29,7 +30,7 @@ import lombok.ToString;
 @Entity
 @Table(name = "INVOICE", schema = "supplier_ms")
 @ToString
-public class Invoice implements IdentityEntity, BasedEntity, Serializable {
+public class Invoice implements IdentityEntity, BasedEntity, Serializable, Voable<InvoiceVo> {
     private static final long serialVersionUID = 1L;
 
     @Id
@@ -88,4 +89,17 @@ public class Invoice implements IdentityEntity, BasedEntity, Serializable {
     public final int hashCode() {
         return HibernateProxyUtils.hashCode(this);
     }
+
+    @Override
+    public InvoiceVo toVo() {
+        InvoiceVo vo = new InvoiceVo();
+        vo.setId(id);
+        if (company != null) {
+            vo.setCompanyId(company.getId());
+        }
+        vo.setCode(code);
+        vo.setInvoiceDate(invoiceDate);
+        vo.setDescription(description);
+        return vo;
+    }
 }