compareTemplateHandler lowers an `images` array to an SVG of side-by-side
<image> cells, each with the per-object data-label/description caption and
data-lightbox; paths resolve to absolute up front (injected, honest error
on a miss). _paintImage now aspect-fits (contain, centered) so cells of
differing-shape images don't distort. Flutter-free handler + painter pixel
tests. Card image-loading + registration next.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
a651c9e026