move pi-mono into companion-cloud as apps/companion-os

- Copy all pi-mono source into apps/companion-os/
- Update Dockerfile to COPY pre-built binary instead of downloading from GitHub Releases
- Update deploy-staging.yml to build pi from source (bun compile) before Docker build
- Add apps/companion-os/** to path triggers
- No more cross-repo dispatch needed

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

packages/web-ui/example/README.md

@@ -0,0 +1,61 @@
+# Pi Web UI - Example
+
+This is a minimal example showing how to use `@mariozechner/pi-web-ui` in a web application.
+
+## Setup
+
+```bash
+npm install
+```
+
+## Development
+
+```bash
+npm run dev
+```
+
+Open [http://localhost:5173](http://localhost:5173) in your browser.
+
+## What's Included
+
+This example demonstrates:
+
+- **ChatPanel** - The main chat interface component
+- **System Prompt** - Custom configuration for the AI assistant
+- **Tools** - JavaScript REPL and artifacts tool
+
+## Configuration
+
+### API Keys
+
+The example uses **Direct Mode** by default, which means it calls AI provider APIs directly from the browser.
+
+To use the chat:
+
+1. Click the settings icon (⚙️) in the chat interface
+2. Click "Manage API Keys"
+3. Add your API key for your preferred provider:
+   - **Anthropic**: Get a key from [console.anthropic.com](https://console.anthropic.com/)
+   - **OpenAI**: Get a key from [platform.openai.com](https://platform.openai.com/)
+   - **Google**: Get a key from [makersuite.google.com](https://makersuite.google.com/)
+
+API keys are stored in your browser's localStorage and never sent to any server except the AI provider's API.
+
+## Project Structure
+
+```
+example/
+├── src/
+│   ├── main.ts       # Main application entry point
+│   └── app.css       # Tailwind CSS configuration
+├── index.html        # HTML entry point
+├── package.json      # Dependencies
+├── vite.config.ts    # Vite configuration
+└── tsconfig.json     # TypeScript configuration
+```
+
+## Learn More
+
+- [Pi Web UI Documentation](../README.md)
+- [Pi AI Documentation](../../ai/README.md)
+- [Mini Lit Documentation](https://github.com/badlogic/mini-lit)