Header's anonymous CTA was a filled brand-primary block — visually
loud against the otherwise quiet header icon strip (Notifications,
Help). Switched to a ghost (transparent / no border) button with a
log-in icon ahead of the label:
- bg-transparent, text in brand-primary-500 (dark mode: -300)
- hover surfaces a faint brand-primary-50 fill so the affordance
stays readable
- gap-1.5 between the new 16 px log-in icon and the label
- h-11 preserved — 44x44 touch target per ADR-0016 still holds
Adds 'log-in' (lucide LogIn) to the shared icon registry; pair
of the existing 'log-out'.
Julien Gautier