feature: create "secret" page with all possible and impossible options

The indent here is to provide functionality to the user from GUI (not running any commands from the net).

1. we may not want to bloat user with different options which can result into broken system without knowing or annoyance.
2. for those who know it could be a quality of life improvement

The issue does not name any files, tests, entry points, or specific options for the proposed GUI page. First clarify which possible and impossible options belong in scope, then locate the existing GUI structure and define completion criteria before implementing anything.

Written by the indexing model from the issue text.