refactor: 移除Hibernate依赖并重构代理对象初始化检查逻辑

feat(controller): 新增多个任务类用于合同和客户相关操作
feat(service): 新增ProxyUtils工具类替代Hibernate.isInitialized检查
refactor(controller): 重构多个控制器和皮肤类，使用ProxyUtils替代Hibernate
refactor(service): 重构服务类，移除Hibernate依赖并优化方法实现
fix(controller): 修复表格单元格初始化逻辑，确保代理对象正确加载
chore: 更新项目版本号至0.0.58-SNAPSHOT
docs: 添加MyProperties类用于管理下载路径配置

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

@@ -1,15 +1,45 @@
 package com.ecep.contract.service;
 
 import java.util.List;
+import java.util.Map;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.stereotype.Service;
 
 import com.ecep.contract.model.ContractItem;
 import com.ecep.contract.model.Inventory;
 import com.ecep.contract.vm.ContractItemViewModel;
 
+@Service
 public class ContractItemService implements ViewModelService<ContractItem, ContractItemViewModel> {
 
+    @Override
+    public ContractItem findById(Integer id) {
+        throw new UnsupportedOperationException("Unimplemented method 'findById'");
+    }
+
+    @Override
+    public ContractItem save(ContractItem entity) {
+        throw new UnsupportedOperationException("Unimplemented method 'save'");
+    }
+
+    @Override
+    public void delete(ContractItem entity) {
+        throw new UnsupportedOperationException("Unimplemented method 'delete'");
+    }
+
+    @Override
+    public List<ContractItem> findAll() {
+        throw new UnsupportedOperationException("Unimplemented method 'findAll'");
+    }
+
+    @Override
+    public Page<ContractItem> findAll(Map<String, Object> params, Pageable pageable) {
+        throw new UnsupportedOperationException("Unimplemented method 'findAll'");
+    }
+
     public List<ContractItem> findAllByInventory(Inventory parent) {
-        // TODO Auto-generated method stub
         throw new UnsupportedOperationException("Unimplemented method 'findAllByInventory'");
     }