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

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

@@ -1,30 +1,26 @@
 package com.ecep.contract.service;
 
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 
 import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 
 import com.ecep.contract.ContractFileType;
-import com.ecep.contract.model.Contract;
-import com.ecep.contract.model.ContractFile;
+import com.ecep.contract.util.ParamUtils;
 import com.ecep.contract.vm.ContractFileViewModel;
+import com.ecep.contract.vo.ContractFileVo;
+import com.ecep.contract.vo.ContractVo;
 
 @Service
-public class ContractFileService extends QueryService<ContractFile, ContractFileViewModel> {
-    public List<ContractFile> findAllByContract(Contract contract) {
-        Map<String, Object> params = new HashMap<>();
-        params.put("contract", contract.getId());
-        return findAll(params, Pageable.unpaged()).getContent();
+public class ContractFileService extends QueryService<ContractFileVo, ContractFileViewModel> {
+    public List<ContractFileVo> findAllByContract(ContractVo contract) {
+        return findAll(ParamUtils.equal("contract", contract.getId()), Pageable.unpaged()).getContent();
     }
 
-    public List<ContractFile> findAllByContractAndFileType(Contract contract, ContractFileType type) {
-        Map<String, Object> params = new HashMap<>();
-        params.put("contract", contract.getId());
-        params.put("type", type.name());
-        return findAll(params, Pageable.unpaged()).getContent();
+    public List<ContractFileVo> findAllByContractAndFileType(ContractVo contract, ContractFileType type) {
+        return findAll(ParamUtils.builder()
+                .equals("contract", contract.getId())
+                .equals("type", type.name()).build(), Pageable.unpaged()).getContent();
     }
 
 }