DrawingCard stacks a caption layer over the SVG: each data-label /
data-description annotation renders a themed caption just below its
element, mapped to pixel space via a shared svgViewportFit (refactored out
of the painter so the overlay and the paint use identical viewBox-fit
math). Display-only (IgnorePointer). Widget-tested. data-lightbox is
captured in the model; the tap-to-zoom interaction is the last follow-on.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
3e43746c17