Add vase design: split SVG title/image/date into homepage sections

- Hero glass panel now shows Lina · rings · Marlin from vase artwork
  (side-by-side on landscape, stacked on portrait)
- Vase illustration used as ornamental divider above album grid
- Vase date used as footer closing line
- Homepage structure: intro text, ornament, albums divider, gallery, date

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

assets/js/custom.js

@@ -13,8 +13,8 @@
     if (s > heroH) { ticking = false; return; }
 
     // Background at 55%, text at 80% — both slower than normal, image slowest
-    if (heroBg) heroBg.style.transform = 'translateY(' + (s * 0.45) + 'px)';
-    if (heroFg) heroFg.style.transform = 'translateY(' + (s * 0.35) + 'px)';
+    if (heroBg) heroBg.style.transform = 'translateY(' + (s * 0.25) + 'px)';
+    if (heroFg) heroFg.style.transform = 'translateY(' + (s * 0.15) + 'px)';
 
     // Scroll arrow fades out over the first 30% of hero height
     if (heroScroll) {