[Improvement] Better integration between Jupyter notebooks and CC VSCode extension

The current experience of interacting with Jupyter Notebooks in VSCode via the Claude Code extension is pretty lacklustre. It can't seem to run notebook cells properly and tries to run it manually via the terminal. The GH Copilot extension has nailed the interaction with Jupyter Notebooks - it's able to natively edit/run/read cells of the notebook you have open as if you were doing it yourself. A similar ability would be fantastic!

I believe GH Copilot is using the 'built-in' MCP tools to do this:

<img width="1216" height="908" alt="Image" src="https://github.com/user-attachments/assets/bed0434e-e648-4535-97e1-7ceb87ace8ba" />

It would be great if the CC extension could tap into this.