🎨 fix(theme): align UI controls with global radius tokens

Remove hard-coded and capped border radius overrides so shared controls and feature actions consistently follow the active theme radius.

- Replace fixed radius utilities with semantic theme-aware radius tokens
- Remove redundant `rounded-full` and pixel-based overrides from header, toolbar, Playground, and utility actions
- Drop unused `StatusBadge` rounded prop usage
- Keep existing component behavior intact while improving global theme consistency

web/default/src/features/pricing/components/model-details-apps.tsx

@@ -41,7 +41,7 @@ function RankBadge(props: { rank: number }) {
   return (
     <span
       className={cn(
-        'inline-flex size-7 shrink-0 items-center justify-center rounded-full font-mono text-xs font-bold tabular-nums',
+        'inline-flex size-7 shrink-0 items-center justify-center rounded-md font-mono text-xs font-bold tabular-nums',
         palette
       )}
     >