[FEATURE]: configurable TUI padding

[gpid007]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

The main content area, sidebar, and dialogs all use hardcoded padding values (e.g. paddingLeft={2}, paddingRight={2} in the session layout). There is no way to reduce this through tui.json.

On narrow terminals or tmux splits, the fixed 2-column padding on each side eats into usable width noticeably.

Would it be possible to expose a padding option in tui.json, similar to how scroll_speed is already configurable? Even a single integer value controlling horizontal padding would be enough.

[github-actions]

This issue doesn't fully meet our contributing guidelines.

What needs to be fixed:

• Feature request titles must start with [FEATURE]: (e.g. [FEATURE]: configurable TUI padding via tui.json)
• Feature requests require a verification checkbox confirming the feature doesn't already exist and the issue template was used

Please edit this issue to address the above within 2 hours, or it will be automatically closed.

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This issue might be a duplicate of existing issues. Please check:

• TUI has too much padding everywhere and unnecessary large height elements #9955: Also requests reduced/customizable TUI padding and a condensed layout option

If you believe this was flagged incorrectly, please let a maintainer know.

[github-actions]

Thanks for updating the issue! Everything looks good now. We appreciate you taking the time to fix it.