docs: add README.md for portal repo

README.md

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+# 🪨 grug-group420 Portal
+
+> "complexity very very bad" — grug
+
+The official interactive portal and playground for [grug-group420](https://github.com/grug-group420).
+
+🌐 **Live:** [grug-group420.github.io/portal](https://grug-group420.github.io/portal)
+
+---
+
+## ✨ Features
+
+- **Live CLI Playground** — Try `grugbot420` commands directly in your browser
+- **Project Showcase** — Browse all grug-group420 tools in one place
+- **Zero Dependencies** — Pure HTML/CSS/JS, no frameworks, no build step
+- **Run Locally** — One-click install instructions with copy buttons
+
+## 🚀 Quick Start
+
+```bash
+# Clone and open
+git clone https://github.com/grug-group420/portal.git
+cd portal
+open index.html
+# or
+python3 -m http.server 8000
+```
+
+No build step. No bundler. No node_modules. Just open the file. Grug way.
+
+## 🛠️ Projects Featured
+
+| Project | Description | Language |
+|---------|-------------|----------|
+| [grugbot420](https://github.com/grug-group420/grugbot420) | Neuromorphic cognitive engine | Julia |
+| [Bindboss](https://github.com/grug-group420/Bindboss) | Self-extracting executable packer | Go |
+| [grugbot-server](https://github.com/grug-group420/grugbot-server) | AI CLI assistant | JavaScript/Bun |
+| [grug-cli](https://github.com/grug-group420/grug-cli) | Zero-dep developer toolkit | JavaScript/Bun |
+
+## 📁 Structure
+
+```
+portal/
+├── index.html   # Main page + playground
+├── styles.css   # All styling
+└── app.js       # Playground logic
+```
+
+Three files. That's it. Grug approve.
+
+## 🤝 Contributing
+
+See [CONTRIBUTING.md](https://github.com/grug-group420/.github/blob/main/CONTRIBUTING.md) for guidelines.
+
+Ideas:
+- Add new playground commands
+- Improve mobile responsiveness
+- Add dark/light theme toggle
+- Animate the grug mascot
+
+## 📜 License
+
+Part of [grug-group420](https://github.com/grug-group420). Ship code, not complexity. 🪨