Look up author display name from authors data file

Resolve author keys (e.g. bamnet) to full names (Brian Michalski) via
_data/authors.yml. Falls back to the raw frontmatter value if no match.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: bamnet

_layouts/post.html

@@ -22,7 +22,7 @@
                 <article>
                     <section>
                         <h1 class="post-title">{{ page.title }}</h1>
-                        <p class="post-meta">{{ page.date | date: "%B %-d, %Y" }} by {{ page.author }}</p>
+                        {% assign author = site.data.authors[page.author] %}<p class="post-meta">{{ page.date | date: "%B %-d, %Y" }} by {{ author.name | default: page.author }}</p>
                         <div class="block">{{ content }}</div>
                     </section>
                 </article>

blog/index.html

@@ -12,7 +12,7 @@
 <article style="padding-bottom:3em;">
     <section>
         <h1 class="post-title"><a href="{{page.url}}">{{ page.title }}</a></h1>
-        <p class="post-meta">{{ page.date | date: "%B %-d, %Y" }} by {{ page.author }}</p>
+        {% assign author = site.data.authors[page.author] %}<p class="post-meta">{{ page.date | date: "%B %-d, %Y" }} by {{ author.name | default: page.author }}</p>
         <div class="block">{{ page.content }}</div>
     </section>
     <div class="clear"></div>