- The dialog draws every page into a fixed, clipped 744x400 area, so no page
(or translation) changes the window width; descriptions wrap and tall pages
scroll inside it.
- OK / Cancel / Apply sit flush right in the bottom bar (right-to-left layout
within the fixed width); Restore Defaults stays left.
- The "settings" icon is a gear: a solid ring with six square-ish teeth and a
see-through centre hole, instead of the sun-like rays.
- Scenario s46 visits every page and checks the window keeps its width and
that Apply ends at the bottom bar's right edge (new `same_width` and
`right_edge` scenario checks).
Fixes#290
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
