add: 文章概述和字数统计

YaeBlog.Core/Models/BlogEssay.cs

@@ -8,6 +8,10 @@ public class BlogEssay
 
     public required DateTime PublishTime { get; init; }
 
+    public required string Description { get; init; }
+
+    public required uint WordCount { get; init; }
+
     public List<string> Tags { get; } = [];
 
     public required string HtmlContent { get; init; }