Claude Fable 5 b1643bbe68 #184: shared accent engine — WCAG-conforming tokens by construction ... Dependency-free packages/shared/src/theme.ts: relativeLuminance / contrastRatio (WCAG 2.1), deriveAccentTokens(hex, mode) keeps hue and saturation and binary-searches lightness until the accent clears 4.5:1 against the mode's bg, bg-subtle AND surface (a passing hex is kept verbatim; accent-contrast follows by symmetry). THEME_PRESETS (pond green = default), BASE_PALETTE as the canonical backgrounds. A sweep test (36 hues x 3 saturations x 3 lightnesses x both modes) fences the by-construction guarantee for arbitrary input. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QRtCnB3uLdQtFmvp9HXcRX		2026-07-29 08:59:27 +02:00
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plugin-sdk	draw.io reference plugin: fullscreen editing, inline SVG rendering	2026-07-12 14:15:30 +02:00
plugins	#155: ChordPro-Plugin — Akkordblätter/Leadsheets als Block	2026-07-20 02:11:36 +02:00
shared	#184: shared accent engine — WCAG-conforming tokens by construction	2026-07-29 08:59:27 +02:00