[idea] Option to fully hide the collapsed sidebar

[sadiksaifi]

idea / problem

When the sidebar is collapsed, Herdr still leaves a compact rail visible. That rail is useful for some workflows, but for some it is distracting because the pane never gets the full terminal width.

requested change

Add a config option so users can choose the collapsed sidebar behavior:

[ui]
sidebar_collapsed_mode = "compact" # default

Values:

• compact: current behavior
• hidden: zero-width collapsed sidebar; toggle_sidebar opens it again

why you want this

I want collapsed to mean fully hidden, with no remaining sidebar cells on screen. Keeping compact as the default preserves the current Herdr behavior, while hidden gives users who prefer a distraction-free terminal a clean option.

Note:
I have a small branch here if this direction makes sense:

sadiksaifi/herdr:feat/add-hide-sidebar-option

[ogulcancelik]

implemented on master!

[sadiksaifi]

thanks