Per-char recomputation of (width() >= height() ? 2 : 1) in drawLemonChar
and lemonXAdvance is now passed in by the caller. print() and
getTextWidth() compute scale() once and feed it to every glyph. All
other callers in the file route through the helper for consistency.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>