blog: terse archive + tag headers

app/blog/page.tsx

@@ -9,8 +9,9 @@ export default async function PostsPage() {
   return (
     <>
       <header className="mb-10 border-b border-border pb-8">
+        <p className="section-label mb-4">FIELD NOTES /.06</p>
         <h1 className="heading-xl m-0 text-ink">
-          Posts
+          Field Notes
         </h1>
       </header>
 
@@ -18,11 +19,7 @@ export default async function PostsPage() {
         <PostSearch posts={posts} />
       ) : (
         <section className="empty-state" aria-label="No posts published">
-          <p className="font-mono text-xs uppercase tracking-[0.22em] text-ink-soft">No posts yet</p>
-          <h2 className="heading-sm m-0 text-ink">The archive is empty.</h2>
-          <p className="m-0 max-w-xl text-sm leading-6 text-ink-soft">
-            Publish an MDX post to populate this list and enable archive search.
-          </p>
+          <p className="m-0 text-sm leading-6 text-ink-soft">Archive empty.</p>
         </section>
       )}
     </>