feat: persist selected clone protocol in code explorer

[kovsu]

Summary

Persist the selected clone protocol in the code explorer so the Code popover reopens with the user's last choice instead of resetting to CLI each time.

Changes

• add a feature-specific helper for reading and writing the clone protocol preference
• update the code explorer toolbar to use the stored protocol as the selected tab
• keep CLI as the default when no preference is stored or storage is unavailable

[stylessh]

Let's create a use-local-storage-state that automatically fetches and validates data from local storage. so we can re-use across other configs