refactor(contract): 重构客户文件类型相关代码，统一命名和继承结构

- 将 CompanyCustomerFileType 重命名为 CustomerFileType
- 统一相关 VO 和 model 的继承结构，使用 BaseEnumEntity
- 更新所有引用点，保持代码一致性
- 优化表格单元格显示逻辑，使用专用单元格工厂

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

@@ -12,7 +12,7 @@ import org.springframework.cache.annotation.Cacheable;
 import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 
-import com.ecep.contract.CompanyCustomerFileType;
+import com.ecep.contract.CustomerFileType;
 import com.ecep.contract.MessageHolder;
 import com.ecep.contract.SpringApp;
 import com.ecep.contract.model.CompanyCustomer;
@@ -49,7 +49,7 @@ public class CompanyCustomerFileService extends QueryService<CompanyCustomerFile
 
         // 检索评估表
         List<CompanyCustomerFileVo> files = findAllByCustomerAndType(companyCustomer,
-                CompanyCustomerFileType.EvaluationForm);
+                CustomerFileType.EvaluationForm);
         CompanyCustomerFileVo latestFile = files.stream()
                 .filter(v -> v.getSignDate() != null && v.isValid())
                 .max(Comparator.comparing(CompanyCustomerFileVo::getSignDate))
@@ -104,7 +104,7 @@ public class CompanyCustomerFileService extends QueryService<CompanyCustomerFile
                 .getContent();
     }
 
-    public List<CompanyCustomerFileVo> findAllByCustomerAndType(CompanyCustomerVo customer, CompanyCustomerFileType type) {
+    public List<CompanyCustomerFileVo> findAllByCustomerAndType(CompanyCustomerVo customer, CustomerFileType type) {
         return findAll(ParamUtils.builder()
                 .equals("customer", customer.getId())
                 .equals("type", type.name())