🎨 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/status-badge.tsx

@@ -73,8 +73,6 @@ export interface StatusBadgeProps extends Omit<
   showDot?: boolean
   variant?: StatusVariant | null
   size?: 'sm' | 'md' | 'lg' | null
-  /** @deprecated No longer applicable in flat design */
-  rounded?: 'full' | 'md' | 'sm' | 'lg'
   copyable?: boolean
   copyText?: string
   autoColor?: string
@@ -88,7 +86,6 @@ export function StatusBadge({
   size = 'sm',
   pulse = false,
   showDot = true,
-  rounded: _rounded,
   copyable = true,
   copyText,
   autoColor,