The d2 drawing template compiles a diagram's source to SVG through the d2
binary (resolved via the D-104 path layer), then paints it with the same
renderer the svg card uses. `clide draw --file x.d2` infers the type from
the extension; `.svg` files render directly. Template handlers now return
a DrawResult so a compile failure or an unresolved d2 surface as an honest
userError with an install hint, not a generic "no SVG". Real d2 0.7.1
verified end to end.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
resolveDrawingSvg lowers a DrawingCardDoc to an SVG string: primitive docs
use inline svg or read svgPath (via an injected reader); template docs use
a registered DrawingRegistry handler, so the d2/icon/compare/image children
plug in. Honest DrawErr on no source / unknown template / unreadable path /
empty output. Flutter-free, covered by dart test (7 cases). Not yet wired.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8