Round chapel-style theca with fleur-de-lis finial replaces the arched
niche + blue gem. Extension primary accent shifts from GitHub blue to
B/C-midpoint burnished gold; danger red shifts to theca tone. Backgrounds
and text stay GH-dark to keep the CLI feel.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
