feat(ui): add /cv route, site-wide lowercase, no-cookies footer

reproduces the legacy cv (previously at grenade.github.io/cv) as a
react-router /cv route, fetched at runtime from the same gist. moves
the lowercase aesthetic from per-element overrides to a single body-
level rule so a future toggle can flip it from one place. adds a small
site-wide footer noting why no cookie consent banner is shown.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

ui/src/components/cv/CvHeader.tsx

@@ -0,0 +1,22 @@
+import { Link } from 'react-router-dom';
+import Image from 'react-bootstrap/Image';
+import { CV_PHOTO_URL } from '../../api/cv';
+
+export function CvHeader() {
+  return (
+    <div className="cv-header d-flex flex-column flex-md-row align-items-md-center gap-3 mb-4">
+      <Image
+        src={CV_PHOTO_URL}
+        alt="rob"
+        roundedCircle
+        className="cv-photo"
+      />
+      <div className="flex-grow-1">
+        <h1 className="mb-1">curriculum vitae</h1>
+        <Link to="/" className="hot-pink">
+          ← timeline
+        </Link>
+      </div>
+    </div>
+  );
+}