docs: update readme

README.md

@@ -1,88 +1,158 @@
-# jupyterlab_deepnote
+![Deepnote JupyterLab cover image](deepnote-jupyterlab-cover-image.png)
+
+<div align="center">
 
 [![CI](https://github.com/deepnote/jupyterlab-deepnote/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/deepnote/jupyterlab-deepnote/actions/workflows/ci.yml)
 [![codecov](https://codecov.io/gh/deepnote/jupyterlab-deepnote/graph/badge.svg?token=OV32VZNOJ2)](https://codecov.io/gh/deepnote/jupyterlab-deepnote)
+[![PyPI](https://img.shields.io/pypi/v/jupyterlab-deepnote.svg)](https://pypi.org/project/jupyterlab-deepnote/)
+[![Python Version](https://img.shields.io/pypi/pyversions/jupyterlab-deepnote.svg)](https://pypi.org/project/jupyterlab-deepnote/)
+[![License](https://img.shields.io/badge/License-BSD_3--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause)
 
-A third-party Deepnote extension for JupyterLab that provides a read‑only viewer for Deepnote `.deepnote` files.
-
-> **Note:** This is an unofficial, community-developed extension and is not affiliated with or endorsed by Project Jupyter. JupyterLab is a trademark of LF Charities, Inc.
+## A JupyterLab extension for viewing Deepnote projects (`.deepnote` files) directly in JupyterLab
 
-## Requirements
+[Installation](#installation) • [Usage](#usage) • [Development](#development) • [License](#license) • [Deepnote](https://deepnote.com) • [GitHub community](https://github.com/deepnote/deepnote)
 
-- Python 3.9 or higher
-- JupyterLab >= 4.4.0, < 5.0.0
+</div>
 
-## Install
+---
 
-Install the extension using pip:
+Deepnote is a data notebook for AI era. `jupyterlab-deepnote` is a JupyterLab extension that enables you to open and view [Deepnote](https://deepnote.com) project files (`.deepnote` format) directly within JupyterLab. This extension provides a seamless read-only viewer for Deepnote notebooks, allowing you to explore Deepnote projects without leaving your JupyterLab environment.
 
-```bash
-pip install jupyterlab_deepnote
-```
+### Key features
 
-## Usage
+- 📂 **Open Deepnote files**: View `.deepnote` project files containing Deepnote notebooks in JupyterLab
+- 📓 **Multi-notebook support**: Switch between multiple notebooks within a single `.deepnote` file
+- 👁️ **Read-only mode**: View notebook content safely without modifying the original `.deepnote` file
+- 🔄 **Seamless integration**: Works natively with JupyterLab's notebook interface
+- 🎨 **Deepnote block support**: Renders Deepnote-specific block types as Jupyter cells
 
-After installation you can:
+## Installation
 
-- Open Deepnote files (`.deepnote`) containing Deepnote projects in JupyterLab
-- Switch between notebooks inside a `.deepnote` file
-- View content in **read‑only** mode (no editing or saving back to the `.deepnote` file)
+### Requirements
 
-## Troubleshooting
+- **Python**: 3.9 or higher
+- **JupyterLab**: 4.0.0 or higher
 
-If you encounter issues with the extension, verify that both the server and frontend extensions are properly installed and enabled.
+### Install via pip
 
-Check server extensions:
+Install the extension using pip, see our [PyPI page](https://pypi.org/project/jupyterlab-deepnote/):
 
 ```bash
-jupyter server extension list
+pip install jupyterlab-deepnote
 ```
 
-Check frontend extensions:
+The extension will be automatically enabled after installation.
+
+### Verify installation
+
+Check that the extension is properly installed and enabled:
 
 ```bash
+# Check server extension
+jupyter server extension list
+
+# Check frontend extension
 jupyter labextension list
 ```
 
-## Uninstall
+You should see `jupyterlab_deepnote` listed in both outputs.
 
-To remove the extension, run:
+## Usage
 
-```bash
-pip uninstall jupyterlab_deepnote
-```
+### Opening Deepnote files
+
+1. **Launch JupyterLab**:
+
+   ```bash
+   jupyter lab
+   ```
+
+2. **Open a `.deepnote` file**:
+   - Use the file browser to navigate to your `.deepnote` file
+   - Double-click the file to open it in the notebook viewer
+
+3. **Switch between notebooks** (if the `.deepnote` file contains multiple notebooks):
+   - Use the notebook picker dropdown in the toolbar
+   - Select the notebook you want to view
+
+## Architecture
 
-## Compatibility
+This extension consists of two main components:
 
-### JupyterLab Version Support
+- **Server extension**: Handles `.deepnote` file parsing and conversion to Jupyter notebook format. Not all the blocks are supported; visit [docs](https://deepnote.com/docs?utm_source=github&utm_medium=github&utm_campaign=github&utm_content=readme_main) to learn more
+- **Frontend extension**: Provides the JupyterLab UI integration and notebook picker widget
 
-This extension is compatible with **JupyterLab 4.4.0 or higher**. It requires the content provider registry API introduced in JupyterLab 4.4.
+The extension uses a custom content provider to intercept `.deepnote` file requests and transform them into Jupyter-compatible notebook content.
 
-**Upper bound:** The extension sets an upper bound of `< 5.0.0` to prevent automatic installation with potentially incompatible future major versions of JupyterLab.
+## Troubleshooting
+
+### Extension not loading
+
+If the extension doesn't appear to be working:
+
+1. **Verify installation**:
+
+   ```bash
+   jupyter server extension list
+   jupyter labextension list
+   ```
+
+2. **Rebuild JupyterLab** (if installed from source):
+
+   ```bash
+   jupyter lab build
+   ```
+
+3. **Check for errors**:
+
+   ```bash
+   jupyter lab --debug
+   ```
+
+### Common issues
+
+- **`.deepnote` files not opening**: Ensure the file extension is exactly `.deepnote`
+- **Missing notebooks**: Verify the `.deepnote` file contains valid YAML-formatted Deepnote project data
+- **Extension conflicts**: Try disabling other notebook-related extensions temporarily
+
+### Getting help
+
+If you encounter issues:
+
+1. Check the [GitHub Issues](https://github.com/deepnote/jupyterlab-deepnote/issues) for similar problems
+2. Review the [CONTRIBUTING.md](CONTRIBUTING.md) for development setup
+3. Open a new issue with detailed information about your environment and the problem
+
+## Uninstall
+
+To remove the extension:
+
+```bash
+pip uninstall jupyterlab_deepnote
+```
 
-### Maintenance Policy
+After uninstalling, restart JupyterLab for the changes to take effect.
 
-Following [JupyterLab's extension development guidelines](https://jupyterlab.readthedocs.io/en/stable/extension/extension_dev.html#overview-of-extensions), we adhere to semantic versioning principles:
+## Development
 
-- **Major releases** (e.g., 1.0.0 → 2.0.0): May introduce breaking changes and require user action
-- **Minor releases** (e.g., 1.0.0 → 1.1.0): Add new features while maintaining backwards compatibility
-- **Patch releases** (e.g., 1.0.0 → 1.0.1): Bug fixes and minor improvements only
+For development setup, testing, and contributing guidelines, please see [CONTRIBUTING.md](CONTRIBUTING.md).
 
-When JupyterLab 5.x is released, we will:
+## License
 
-1. Evaluate the changes and update the extension as needed
-2. Release a new major or minor version with explicit JupyterLab 5.x support
-3. Clearly document any breaking changes in the changelog
+This project is licensed under the BSD 3-Clause License - see the [LICENSE](LICENSE) file for details.
 
-### Backwards Compatibility
+## Related projects
 
-This extension follows semantic versioning for its own API:
+- [Deepnote](https://deepnote.com)
+- [Deepnote Open Source](https://github.com/deepnote/deepnote)
+- [VS Code extension](https://marketplace.visualstudio.com/items?itemName=Deepnote.vscode-deepnote)
+- [Cursor extension](https://open-vsx.org/extension/Deepnote/vscode-deepnote)
+- [Windsurf extension](https://open-vsx.org/extension/Deepnote/vscode-deepnote)
 
-- **Current version (0.x.x)**: Pre-release phase. APIs may change without prior notice.
-- **Version 1.0.0 onwards**: We will maintain backwards compatibility within major versions and clearly document breaking changes between major versions.
+---
 
-Note: This extension does **not** support JupyterLab 3.x or earlier versions.
+<div align="center">
 
-## Contributing
+Made with 💙 by the Deepnote team
 
-Contributions are welcome! Please see [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines on how to contribute to this project.
+</div>