The text_block corner handle previously only changed the wrap width, so
the font size never tracked the box — making the editor un-WYSIWYG and
awkward to tune. Now dragging the handle scales every line's font
proportionally with the box, acting as a zoom that preserves the
h1/h2/p size ratios and keeps each line's manually-set baseline.
- Add scaleFontSize(): numeric px sizes (floored at 6px) and simple
rem/em/px strings scale by the box ratio; responsive clamp()/vw
strings are left untouched so the default hero stays fluid.
- Snapshot the box width + lines at drag start so scaling is computed
against the origin (no rounding drift mid-drag).
- Update the canvas hint to note the handle scales text.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude
6af85c30b6