🎨 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/components/theme-switch.tsx

@@ -26,13 +26,7 @@ export function ThemeSwitch() {
   return (
     <DropdownMenu modal={false}>
       <DropdownMenuTrigger
-        render={
-          <Button
-            variant='ghost'
-            size='icon'
-            className='h-9 w-9 rounded-full'
-          />
-        }
+        render={<Button variant='ghost' size='icon' className='h-9 w-9' />}
       >
         <Sun className='size-[1.2rem] scale-100 rotate-0 transition-all dark:scale-0 dark:-rotate-90' />
         <Moon className='absolute size-[1.2rem] scale-0 rotate-90 transition-all dark:scale-100 dark:rotate-0' />