Settings Panel — Fully Responsive

The Settings drawer used to overflow on narrow phones and clip its tabs on tablets. We reworked its grid layout to use dvh units, fluid clamp values, and a scroll-snap carousel for the tab strip.

Fixes

• The panel now hits a 44 px minimum tap target on every control.
• Toggles have a visible focus ring for keyboard users.
• The panel is Playwright-tested at 320 / 768 / 1440 / 1920 viewports.