render/typst.ts stages each job as a self-contained bundle (<job>/.typst/
lib.typ + template + resolved.json) and roots Typst there, so artwork living
outside the package is reachable and old jobs stay re-renderable. Paths are
root-relative throughout -- Typst resolves a leading / against --root, not
the filesystem.
render/contrast.ts measures the region behind the text with sharp and forces
a scrim on high variance even when mean luminance passes; verified with a
checkerboard that scores 5.45:1 contrast yet stdev 119.9.
render/preflight.ts checks TrimBox, embedded fonts, image dpi and structure,
degrading to 'non installato' rather than failing when a tool is absent.
E2E verified via jiti: TrimBox 297.0x420.0mm, font axes injected, bundle
staged. 0 type errors.
templates/lib.typ gains WCAG luminance/contrast-ratio/ink-on and a
surface-aware palette-of(). framed and split place type on flat colour and
were inheriting an ink measured against the artwork, rendering white on
cream at 1.15:1. Now computed per surface: 18.34:1 on the regression
fixture. Accent held to the same bar with fallback to ink.
Adds tests/contrast-check.typ, run per fixture by the harness.
35/35 render combos and 7/7 contrast assertions pass.
gsalucci
mozempk