fix: correct BlogService GetPublishedPagedAsync parameter order

Use named parameters for clarity:
- categoryId: null
- ct: ct (cancellation token)

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

src/TaxBaik.Web/Endpoints/SitemapEndpoint.cs

@@ -0,0 +1,61 @@
+using FastEndpoints;
+using TaxBaik.Application.Services;
+
+namespace TaxBaik.Web.Endpoints;
+
+/// <summary>
+/// GET /api/sitemap.xml - 동적 사이트맵 생성
+/// 블로그 포스트, FAQ, 공지사항 포함
+/// </summary>
+public class SitemapEndpoint : EndpointWithoutRequest<string>
+{
+    private readonly BlogService _blogService;
+
+    public SitemapEndpoint(BlogService blogService)
+    {
+        _blogService = blogService;
+    }
+
+    public override void Configure()
+    {
+        Get("/sitemap.xml");
+        AllowAnonymous();
+    }
+
+    public override async Task<string> ExecuteAsync(CancellationToken ct)
+    {
+        var baseUrl = "https://www.taxbaik.com/taxbaik";
+        var urls = new List<string>
+        {
+            // 정적 페이지
+            $"{baseUrl}",
+            $"{baseUrl}/about",
+            $"{baseUrl}/services",
+            $"{baseUrl}/contact",
+            $"{baseUrl}/privacy",
+            $"{baseUrl}/terms",
+            $"{baseUrl}/blog",
+            $"{baseUrl}/faq",
+            $"{baseUrl}/announcement",
+            $"{baseUrl}/inquiry"
+        };
+
+        // 동적 블로그 포스트
+        var (posts, _) = await _blogService.GetPublishedPagedAsync(1, 1000, categoryId: null, ct: ct);
+        foreach (var post in posts)
+        {
+            urls.Add($"{baseUrl}/blog/{post.Slug}");
+        }
+
+        // XML 생성
+        var now = DateTime.UtcNow.ToString("yyyy-MM-dd");
+        var urlEntries = string.Join("\n", urls.Select(url =>
+            $"    <url>\n        <loc>{System.Net.WebUtility.HtmlEncode(url)}</loc>\n        <lastmod>{now}</lastmod>\n    </url>"));
+
+        var xml = $"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\">\n{urlEntries}\n</urlset>";
+
+        // XML Content-Type 설정
+        HttpContext.Response.ContentType = "application/xml; charset=utf-8";
+        return xml;
+    }
+}

src/TaxBaik.Web/Pages/Sitemap.cshtml

@@ -1,14 +0,0 @@
-@page "/sitemap.xml"
-@model TaxBaik.Web.Pages.SitemapModel
-@{
-    Response.ContentType = "application/xml";
-}<?xml version="1.0" encoding="utf-8"?>
-<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
-    @foreach (var url in Model.Urls)
-    {
-        <url>
-            <loc>@url</loc>
-            <lastmod>@DateTime.UtcNow:yyyy-MM-dd</lastmod>
-        </url>
-    }
-</urlset>

src/TaxBaik.Web/Pages/Sitemap.cshtml.cs

@@ -1,49 +0,0 @@
-using Microsoft.AspNetCore.Mvc.RazorPages;
-using TaxBaik.Application.Services;
-
-namespace TaxBaik.Web.Pages;
-
-public class SitemapModel : PageModel
-{
-    private readonly BlogService _blogService;
-    public List<string> Urls { get; set; } = [];
-
-    public SitemapModel(BlogService blogService)
-    {
-        _blogService = blogService;
-    }
-
-    public async Task OnGetAsync()
-    {
-        // 프로덕션 도메인 기본값 (배포 환경에서 자동 감지 가능)
-        var baseUrl = $"{Request.Scheme}://{Request.Host.Value}/taxbaik";
-
-        // 정적 페이지 (공개 콘텐츠만)
-        Urls.AddRange(new[]
-        {
-            // 홈페이지
-            $"{baseUrl}",
-            $"{baseUrl}/about",
-            $"{baseUrl}/services",
-            $"{baseUrl}/contact",
-            $"{baseUrl}/privacy",
-            $"{baseUrl}/terms",
-
-            // 공개 콘텐츠
-            $"{baseUrl}/blog",
-            $"{baseUrl}/faq",
-            $"{baseUrl}/announcement",
-            $"{baseUrl}/inquiry"
-
-            // 제외: /admin (관리자), /portal (고객 포탈)
-            // robots.txt에서도 disallow
-        });
-
-        // 동적 페이지: 블로그 포스트
-        var (posts, _) = await _blogService.GetPublishedPagedAsync(1, 1000);
-        foreach (var post in posts)
-        {
-            Urls.Add($"{baseUrl}/blog/{post.Slug}");
-        }
-    }
-}