paintSvg walks the typed SvgDocument and draws it: shapes → ui.Path
(rect/rrect/ellipse/line/poly/path incl. arcs), text → TextPainter
(anchor + baseline), per-node Affine transforms, group opacity via
saveLayer, and viewBox fit (xMidYMid meet). Exposes SvgScenePainter and
the SvgView widget. image-href (async) and markers/arrowheads are deferred
follow-ons. Pixel-probe tested under flutter test (8 cases, incl.
rendering the real d2 fixture). Completes the clide-owned SVG renderer
core (D-103); not yet wired into a card.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
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