[chore] Add readme

Author: peterver

README.md

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+# 🎮 Atomic Arcade
+
+**Atomic Arcade** is a retro-inspired, fragment-powered micro-arcade built using the [TriFrost Atomic Runtime](https://trifrost.dev).
+
+It showcases zero-bundle, server-first game delivery, each game loads as a fragment when needed, no more, no less.
+
+> ⚡ No bundlers. No client routing. No hydration nightmares. Just fragments and fun.
+
+---
+
+## 🕹 Live Games
+- **Breakout**: Colorful paddle & brick action
+- **Tetris**: Classic falling blocks with smooth controls
+- **Snake**: A pixel-linked reptile quest, powered by SVG food and linked segment rendering
+
+---
+
+## 🧬 Powered By: TriFrost Atomic
+Atomic Arcade is a practical demo of [TriFrost Atomic](https://www.trifrost.dev/docs/jsx-atomic)’s **runtime fragment model**, where:
+- Each game is a fully isolated fragment
+- No global JS bundles — fragments self-bootstrap
+- HTML, JS, and CSS are streamed and hydrated only when needed
+- Events are passed via pub/sub (`el.$publish(...)`)
+- Canvas rendering and component injection are fully controlled through runtime fragments
+
+---
+
+## 💡 Features
+- ✨ Synthwave-inspired UI
+- 📦 Zero bundles — everything is dynamically streamed
+- 🧠 Component-level event logic (`Script` + `css`)
+- 🎨 Full canvas rendering (Tetris, Snake)
+- 🔊 Optional audio FX + music with `AudioPlayer`
+- ⚙️ Server-driven routing (`routes.ts`)
+
+---
+
+## 🚀 Running Locally
+```bash
+# Clone and install
+git clone https://github.com/trifrost-js/example-atomic-arcade.git
+cd example-atomic-arcade
+npm install
+
+# Start dev server
+npm run dev
+```
+
+---
+
+## ❄️ Stay Frosty
+Atomic Arcade is a living demo of what’s possible when you rethink JS delivery from the ground up. No SPA assumptions. No bundler magic. Just fast, focused fragments.
+
+Built with ❤️ by the TriFrost team