Add news post type with list and detail routes

Elternbeirat.Web/Services/PageService.cs

@@ -1,6 +1,4 @@
 using Markdig;
-using Markdig.Extensions.Yaml;
-using Markdig.Syntax;
 
 namespace Elternbeirat.Web.Services;
 
@@ -51,36 +49,9 @@ public sealed class PageService
         var source = File.ReadAllText(path);
 
         var document = Markdown.Parse(source, pipeline);
-        var title = ReadTitle(document, source) ?? slug;
+        var title = FrontMatter.Read("titel", document, source) ?? slug;
         var html = Markdown.ToHtml(source, pipeline);
 
         return new Page { Slug = slug, Title = title, ContentHtml = html };
     }
-
-    /// <summary>
-    /// Pulls the <c>titel:</c> value out of the YAML front matter. Kept
-    /// deliberately simple (a single <c>key: value</c> line) — YamlDotNet will
-    /// take over once we need structured metadata. The key stays German because
-    /// the Markdown files are edited by German-speaking editors.
-    /// </summary>
-    private static string? ReadTitle(MarkdownDocument document, string source)
-    {
-        var block = document.Descendants<YamlFrontMatterBlock>().FirstOrDefault();
-        if (block is null)
-        {
-            return null;
-        }
-
-        var frontMatter = source.Substring(block.Span.Start, block.Span.Length);
-        foreach (var line in frontMatter.Split('\n'))
-        {
-            var trimmed = line.Trim();
-            if (trimmed.StartsWith("titel:", StringComparison.OrdinalIgnoreCase))
-            {
-                return trimmed["titel:".Length..].Trim().Trim('"');
-            }
-        }
-
-        return null;
-    }
 }