fix: feed card follow ui

components/social/post/post-card.tsx

@@ -71,11 +71,25 @@ export function PostCard({
           show (delete for owners, block/report for everyone else), so
           a view with nothing to expose simply hides the dot. */}
       <header className="flex items-center gap-3 mb-4">
-        <UserAvatar
-          src={post.author_avatar_url}
-          name={authorName}
-          className="size-9"
-        />
+        {authorHandle ? (
+          <Link
+            href={`/u/${authorHandle}`}
+            aria-label={`View ${authorName}'s profile`}
+            className="shrink-0"
+          >
+            <UserAvatar
+              src={post.author_avatar_url}
+              name={authorName}
+              className="size-9"
+            />
+          </Link>
+        ) : (
+          <UserAvatar
+            src={post.author_avatar_url}
+            name={authorName}
+            className="size-9"
+          />
+        )}
         <div className="min-w-0 flex-1">
           {authorHandle ? (
             <Link