grim7/27/2026, 3:09:24 AM

The overlaid dither AREAS blended into a muddy green where blurple (billed)
met yellow (actual). Switched buildSpendChart to the line renderer so the two
series read as distinct strokes on the shared scale. renderDitherChart stays
in @tripwire/utils (exported + tested) for other uses; the digest just doesn't
fill areas anymore.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Parent202e577