Per design review, pivot the heading strategy from hybrid-serif to a
refined grotesk: drop the Fraunces dependency, token, and import; page
titles, the Home greeting, and section/empty-state titles now use Geist
at semibold with the editorial fluid sizing and tight tracking. No serif
anywhere.
Active sidebar item is now a tint-only treatment (accent text + tinted
background); the left accent rail is removed and the shared base
.nav-item.active inset bar is suppressed in the sidebar (as the console
rail already does). Update the design-system e2e specs to assert the
sans display font and the tinted-background active state.
Assisted-by: Claude:claude-opus-4-8 [Claude Code]
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>