Adapts the quiz screen's header, toolbar, choice cards, and bottom bar
to the designer's new layout:
- Header: adds the RanaZe logo/wordmark and a question-progress bar +
percentage alongside the existing "Question N of M" text.
- Toolbar: consolidates 12 icon-only/chip buttons into 6 labeled items
(Text size, Calculator, Clear highlight, Notes, Bookmark, More), with
a new "More" popup holding the rest (labs, flag, report, flashcard,
theme toggle, feedback). The underlying buttons are reparented, not
duplicated, so every existing theming/visibility/state call site
keeps working unmodified.
- Category tag: shows the question's discipline (falling back to
system) above the stem.
- Choice cards: every choice now renders as a subtly-bordered rounded
card even before answering, not just a flat divider row; the
currently-selected pre-submit choice shows a checkmark.
- Bottom bar: merges the Skip/Submit row and the timer row into one -
Skip as a plain link, a centered "X of Y" progress bar, and a
time slot that shows the existing countdown when a limit applies or
a new count-up stopwatch ("Time elapsed") otherwise, plus a
Ctrl+Enter/Cmd+Enter submit shortcut with a visible hint.