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+![Thunderbird AI Compose Banner](./banner.png)
+
+## Installation (Development Build)
+
+1. Clone the repository:
+
+   ```bash
+   git clone https://github.com/luciferreeves/thunderbird-ai-compose.git
+   cd thunderbird-ai-compose
+   ```
+
+2. Install dependencies:
+
+   ```bash
+   npm install
+   ```
+
+3. Build the extension:
+
+   ```bash
+   npm run build
+   ```
+
+4. Open Thunderbird and go to:
+
+    `Tools` → `Developer Tools` → `Debug Add-ons` → `Load Temporary Add-on`
+
+
+5. Select the generated `manifest.json` inside the `build/` folder.
+
+## License
+
+This project is licensed under the **MIT License**. See [LICENSE](./LICENSE) for details.