Fix reversed keybindings for navigation in session selector

[alex-bue]

This PR fixes the reversed keybindings for navigation in the session selector:

• Ctrl-p now moves up, as expected.
• Ctrl-n now moves down, as expected.

The behavior now matches the default fzf keybindings for n (next) and p (previous).

Related Issue

• Resolves #107

Testing

• Verified that Ctrl-p and Ctrl-n behave as default fzf navigation.
• Tested locally

[omerxx]

Hi @alex-bue, sorry for the delay, I'm happy to accept, please:

1. Fix conflicts
2. Make sure this is aligned with the readme (and update if necessary?)

Thanks!