feat(portfolio): add status bar and floating nav

components/portfolio/StatusBar.tsx

@@ -0,0 +1,23 @@
+import { statusLine } from "@/lib/portfolio";
+
+export function StatusBar() {
+  return (
+    <div className="border-b border-blacksite-line bg-blacksite-bg text-blacksite-muted">
+      <div className="mx-auto flex max-w-7xl items-center justify-between gap-4 px-4 py-2 sm:px-6 lg:px-8">
+        <p className="section-label flex min-w-0 items-center gap-2">
+          <span
+            aria-hidden="true"
+            className="size-1.5 shrink-0 rounded-full bg-signal-green shadow-[0_0_14px_rgba(182,255,0,0.45)]"
+          />
+          <span className="truncate">{statusLine}</span>
+        </p>
+        <a
+          href="#contact"
+          className="section-label shrink-0 !text-blacksite-text transition-colors hover:!text-signal-cyan focus-visible:outline-signal-cyan"
+        >
+          Contact ↗
+        </a>
+      </div>
+    </div>
+  );
+}