Add BlueSky sharing support to blog posts

Added BlueSky as a new social media sharing option in `_BlogItem.cshtml`, alongside Twitter, Reddit, Facebook, and LinkedIn.

Introduced `PostToBlueSkyTagHelper` to generate BlueSky sharing links, including post title and permalink encoding. Updated Razor views to ensure consistent integration of the BlueSky sharing feature across all relevant sections of the blog post footer.

Author: poppastring

source/DasBlog.Web.UI/TagHelpers/Post/PostToBlueSkyTagHelper.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Text.Encodings.Web;
+using System.Threading.Tasks;
+using DasBlog.Services;
+using DasBlog.Web.Models.BlogViewModels;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+
+namespace DasBlog.Web.TagHelpers
+{
+	public class PostToBlueSkyTagHelper : TagHelper
+	{
+		private const string BLUESKY_SHARE_URL = "https://bsky.app/intent/compose?text={0}";
+		private readonly IDasBlogSettings dasBlogSettings;
+		public PostViewModel Post { get; set; }
+
+		public PostToBlueSkyTagHelper(IDasBlogSettings dasBlogSettings)
+		{
+			this.dasBlogSettings = dasBlogSettings;
+		}
+
+		public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
+		{
+			output.TagName = "a";
+			output.TagMode = TagMode.StartTagAndEndTag;
+			output.Attributes.SetAttribute("class", "dasblog-a-share-bluesky");
+			string text = $"{Post.Title} {dasBlogSettings.RelativeToRoot(Post.PermaLink)}";
+			output.Attributes.SetAttribute("href", string.Format(BLUESKY_SHARE_URL, UrlEncoder.Default.Encode(text)));
+
+			var content = await output.GetChildContentAsync();
+			output.Content.SetHtmlContent(content.GetContent());
+		}
+	}
+}

source/DasBlog.Web.UI/Themes/darkly/_BlogItem.cshtml

@@ -22,7 +22,7 @@
             Categories: <post-categories-list post="@Model" >, </post-categories-list>
         </div>
         <div class="col-md-12 mb-6">
-            Share on <post-to-twitter post="@Model">Twitter</post-to-twitter>, <post-to-reddit post="@Model">Reddit</post-to-reddit>, <post-to-facebook post="@Model">Facebook</post-to-facebook> or <post-to-linked-in post="@Model">LinkedIn</post-to-linked-in>
+            Share on <post-to-twitter post="@Model">Twitter</post-to-twitter>, <post-to-reddit post="@Model">Reddit</post-to-reddit>, <post-to-facebook post="@Model">Facebook</post-to-facebook> or <post-to-linked-in post="@Model">LinkedIn</post-to-linked-in>, <post-to-blue-sky post="@Model">BlueSky</post-to-blue-sky>
         </div>
         <div dasblog-authorized class="col-md-12 mb-6">
             <post-edit-link post="@Model" />

source/DasBlog.Web.UI/Themes/dasblog/_BlogItem.cshtml

@@ -21,7 +21,7 @@
             Categories: <post-categories-list post="@Model" >, </post-categories-list>
         </div>
         <div class="col-md-12 mb-6">
-            Share on <post-to-twitter post="@Model">Twitter</post-to-twitter>, <post-to-reddit post="@Model">Reddit</post-to-reddit>, <post-to-facebook post="@Model">Facebook</post-to-facebook> or <post-to-linked-in post="@Model">LinkedIn</post-to-linked-in>
+            Share on <post-to-twitter post="@Model">Twitter</post-to-twitter>, <post-to-reddit post="@Model">Reddit</post-to-reddit>, <post-to-facebook post="@Model">Facebook</post-to-facebook> or <post-to-linked-in post="@Model">LinkedIn</post-to-linked-in>, <post-to-blue-sky post="@Model">BlueSky</post-to-blue-sky>
         </div>
         <div dasblog-authorized class="col-md-12 mb-6">
             <post-edit-link post="@Model" />

source/DasBlog.Web.UI/Themes/fulcrum/_BlogItem.cshtml

@@ -24,7 +24,7 @@
             <post-created-date post="@Model" />
         </div>
         <div class="col-md-12 mb-6">
-            <post-to-twitter post="@Model">Share on Twitter</post-to-twitter>
+            <post-to-twitter post="@Model">Share on Twitter</post-to-twitter>, <post-to-blue-sky post="@Model">Share BlueSky</post-to-blue-sky>
         </div>
         <div dasblog-authorized class="col-md-12 mb-6">
             <post-edit-link post="@Model" />

source/DasBlog.Web.UI/Themes/journal/_BlogItem.cshtml

@@ -21,7 +21,7 @@
             Categories: <post-categories-list post="@Model" >, </post-categories-list>
         </div>
         <div class="col-md-12 mb-6">
-            Share on <post-to-twitter post="@Model">Twitter</post-to-twitter>, <post-to-reddit post="@Model">Reddit</post-to-reddit>, <post-to-facebook post="@Model">Facebook</post-to-facebook> or <post-to-linked-in post="@Model">LinkedIn</post-to-linked-in>
+            Share on <post-to-twitter post="@Model">Twitter</post-to-twitter>, <post-to-reddit post="@Model">Reddit</post-to-reddit>, <post-to-facebook post="@Model">Facebook</post-to-facebook> or <post-to-linked-in post="@Model">LinkedIn</post-to-linked-in>, <post-to-blue-sky post="@Model">BlueSky</post-to-blue-sky>
         </div>
         <div dasblog-authorized class="col-md-12 mb-6">
             <post-edit-link post="@Model" />

source/DasBlog.Web.UI/Themes/median/_BlogItem.cshtml

@@ -25,7 +25,7 @@
                 <post-created-date post="@Model" />
             </div>
             <div class="col-md-12 mb-6">
-                Share on <post-to-twitter post="@Model">Twitter</post-to-twitter>, <post-to-reddit post="@Model">Reddit</post-to-reddit>, <post-to-facebook post="@Model">Facebook</post-to-facebook> or <post-to-linked-in post="@Model">LinkedIn</post-to-linked-in>
+            Share on <post-to-twitter post="@Model">Twitter</post-to-twitter>, <post-to-reddit post="@Model">Reddit</post-to-reddit>, <post-to-facebook post="@Model">Facebook</post-to-facebook> or <post-to-linked-in post="@Model">LinkedIn</post-to-linked-in>, <post-to-blue-sky post="@Model">BlueSky</post-to-blue-sky>
             </div>
             <div dasblog-authorized class="col-md-12 mb-6">
                 <post-edit-link post="@Model" />