iter: d02 select/radioGroup 补 disabled + 修复 select 箭头旋转

packages/skin/ui/src/select.ts

@@ -24,6 +24,7 @@ export function select(props: SelectProps): HTMLElement {
       class: 'ua-select-trigger',
       'aria-haspopup': 'listbox',
       'aria-expanded': () => String(open()),
+      disabled: props.disabled,             // 布尔或信号禁用，h() 直接透传（原生 button 拦截点击）
       onClick: () => open(!open()),
     },
     h('span', { class: () => `ua-select-value${value() ? '' : ' is-empty'}` }, () => current() || props.placeholder || ''),
@@ -46,7 +47,7 @@ export function select(props: SelectProps): HTMLElement {
   );
   const pop = h('div', { class: () => `ua-select-pop${open() ? ' ua-open' : ''}`, role: 'listbox' }, ...options);
 
-  const root = h('div', { class: 'ua-select' }, trigger, pop);
+  const root = h('div', { class: () => `ua-select${open() ? ' ua-open' : ''}` }, trigger, pop); // 根带开合类，供箭头旋转
 
   root.addEventListener('keydown', (e: KeyboardEvent) => {
     if (e.key === 'Escape') open(false); // Esc 关闭弹层