🎨 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/multi-select.tsx

@@ -70,7 +70,7 @@ export function MultiSelect({
                   variant='ghost'
                   size='icon-sm'
                   aria-label='Remove'
-                  className='ml-1 size-auto rounded-full p-0'
+                  className='ml-1 size-auto p-0'
                   onKeyDown={(e) => {
                     if (e.key === 'Enter') {
                       handleUnselect(value)