Initial experience is quite cramped

[kieferrm]

Here's a recording of a first run with the Free SKU https://share.cleanshot.com/mwY3bSK3.

Since the explorer is already open, the editor area get very small when the secondary sidebar opens. This makes the Copilot walkthrough unreadable. We should investigate:

• Is the initial window size still appropriate.
• Keep primary sidebar closed.
• What are alternatives to walkthroughs.