feat(admin): stabilize blog and admin patterns

TaxBaik.Application/Services/InquiryService.cs

@@ -2,6 +2,7 @@ namespace TaxBaik.Application.Services;
 
 using System.Text.RegularExpressions;
 using Microsoft.Extensions.Caching.Memory;
+using TaxBaik.Application.DTOs;
 using TaxBaik.Domain.Entities;
 using TaxBaik.Domain.Enums;
 using TaxBaik.Domain.Interfaces;
@@ -72,6 +73,37 @@ public class InquiryService(
     public async Task UpdateAdminMemoAsync(int id, string? adminMemo, CancellationToken ct = default) =>
         await repository.UpdateAdminMemoAsync(id, adminMemo, ct);
 
+    public async Task<Inquiry?> UpdateAsync(int id, UpdateInquiryDto dto, CancellationToken ct = default)
+    {
+        var inquiry = await repository.GetByIdAsync(id, ct);
+        if (inquiry == null)
+            return null;
+
+        if (string.IsNullOrWhiteSpace(dto.Name))
+            throw new ValidationException("이름을 입력하세요.");
+
+        if (!PhoneRegex.IsMatch(dto.Phone))
+            throw new ValidationException("올바른 전화번호를 입력하세요. (예: 010-1234-5678)");
+
+        if (string.IsNullOrWhiteSpace(dto.Message))
+            throw new ValidationException("문의 내용을 입력하세요.");
+
+        if (!InquiryStatusMapper.TryParse(dto.Status, out var parsedStatus))
+            throw new ValidationException("지원하지 않는 문의 상태입니다.");
+
+        inquiry.Name = dto.Name.Trim();
+        inquiry.Phone = dto.Phone.Trim();
+        inquiry.Email = string.IsNullOrWhiteSpace(dto.Email) ? null : dto.Email.Trim();
+        inquiry.ServiceType = string.IsNullOrWhiteSpace(dto.ServiceType) ? "기타" : dto.ServiceType.Trim();
+        inquiry.Message = dto.Message.Trim();
+        inquiry.Status = InquiryStatusMapper.ToStorageValue(parsedStatus);
+        inquiry.AdminMemo = dto.AdminMemo;
+
+        await repository.UpdateAsync(inquiry, ct);
+        memoryCache.Remove(AdminDashboardService.CacheKey);
+        return inquiry;
+    }
+
     public async Task LinkClientAsync(int inquiryId, int clientId, CancellationToken ct = default) =>
         await repository.LinkClientAsync(inquiryId, clientId, ct);