Function doas_persist_instruction_lines 

pub fn doas_persist_instruction_lines(
    app: &AppState,
    choice: DoasPersistChoice,
) -> Vec<Line<'static>>

What: Build scrollable instruction lines for the doas persist setup wizard.

Inputs:

• app: Application state for localized strings.
• choice: Selected persist setup profile.

Output:

• Owned lines for the instructions pane.

Details:

• Used by the renderer and key handler for scroll clamping.