feat: update UnifiedContentCard to display author username conditionally and prevent layout shift with scrollbar-gutter in globals.css

Author: NiallJoeMaher

components/UnifiedContentCard/UnifiedContentCard.tsx

@@ -243,8 +243,8 @@ const UnifiedContentCard = ({
     >
       {/* Meta info row */}
       <div className="mb-1.5 flex flex-wrap items-center gap-x-1.5 gap-y-1 text-xs text-neutral-500 dark:text-neutral-400">
-        {/* Author/Source info - show author for any content type with author */}
-        {author ? (
+        {/* Author/Source info - show author for content with valid author username */}
+        {author?.username ? (
           <Link
             href={`/${author.username}`}
             className="flex items-center gap-1.5 hover:text-neutral-700 dark:hover:text-neutral-200"

styles/globals.css

@@ -1,5 +1,10 @@
 @tailwind base;
 
+html {
+  /* Prevent layout shift when scrollbar appears/disappears */
+  scrollbar-gutter: stable;
+}
+
 body {
   @apply bg-neutral-100 text-neutral-900 dark:bg-black dark:text-white;
 }