* feat: soften button system with refined primary color (GNU-6)
Replace near-black primary with a lighter dark charcoal (210 5% 25%),
add subtle shadows to solid buttons, and unify border-radius across
all button sizes.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat: add scout-design skill for design auditing and improvement tracking
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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>