🎨 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/ui/checkbox.tsx

@@ -10,7 +10,7 @@ function Checkbox({ className, ...props }: CheckboxPrimitive.Root.Props) {
     <CheckboxPrimitive.Root
       data-slot='checkbox'
       className={cn(
-        'peer border-input focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:border-destructive aria-invalid:ring-destructive/20 aria-invalid:aria-checked:border-primary dark:bg-input/30 dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/40 data-checked:border-primary data-checked:bg-primary data-checked:text-primary-foreground dark:data-checked:bg-primary relative flex size-4 shrink-0 items-center justify-center rounded-[4px] border transition-colors outline-none group-has-disabled/field:opacity-50 after:absolute after:-inset-x-3 after:-inset-y-2 focus-visible:ring-3 disabled:cursor-not-allowed disabled:opacity-50 aria-invalid:ring-3',
+        'peer border-input focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:border-destructive aria-invalid:ring-destructive/20 aria-invalid:aria-checked:border-primary dark:bg-input/30 dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/40 data-checked:border-primary data-checked:bg-primary data-checked:text-primary-foreground dark:data-checked:bg-primary relative flex size-4 shrink-0 items-center justify-center rounded-sm border transition-colors outline-none group-has-disabled/field:opacity-50 after:absolute after:-inset-x-3 after:-inset-y-2 focus-visible:ring-3 disabled:cursor-not-allowed disabled:opacity-50 aria-invalid:ring-3',
         className
       )}
       {...props}