feat(view): load bundled sample from ?sample=1 deep link

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>

src/main.ts

@@ -253,3 +253,8 @@ $<HTMLSelectElement>('pier').addEventListener('change', (ev) => showPier((ev.tar
 buildPartToggles();
 buildViewButtons();
 renderResults(null);
+
+// Deep link for the bundled sample: open with ?sample=1 to load P1 without clicking.
+if (new URLSearchParams(window.location.search).get('sample') === '1') {
+  $<HTMLButtonElement>('sample').click();
+}