Sparkle 🎆/🎇 from the jumbo emoji with a lightweight particle fountain that piles on the floor. Prefer text/plain over sticky clipboard images on Linux so address-bar URLs do not also attach a leftover bitmap.
Support app.relay.emoji_confetti on jumbo emoji clicks with canvas physics,
per-emoji particle profiles, and a fixed overlay that does not affect scroll.
Also add a Vite playground for live component previews and theme hover preview.
