fix(color): normalize scheme seeds without # to #RRGGBB

Merged
KE
13d ago
+8-2

Summary

hexToRgb already accepts a 6-digit seed without a leading # ("ff00aa"). schemeFromSeed still stored seedHex.toUpperCase() as palette.seed, so that input became "FF00AA" instead of the canonical "#FF00AA" used everywhere else (and required by isHex).

When the seed parses, set seed from rgbToHex so it is always #RRGGBB. Invalid seeds are still uppercased as before.

Test plan

  • npx vitest run lib/color.extended.test.ts lib/color.test.ts
  • New case: schemeFromSeed("ff00aa").seed === "#FF00AA" (fails before, passes after)
  • npm run typecheck

Summary by cubic

Fixes schemeFromSeed so valid seeds without # are stored as #RRGGBB in palette.seed, matching the canonical format used elsewhere and required by isHex. Previously schemeFromSeed("ff00aa").seed returned "FF00AA".

  • Invalid seeds are still uppercased as before.