fix: 修复弹出菜单在新按钮点击后即开即关（改用 pointerdown 捕获关闭，WKWebView 下复现）

packages/ui/src/components/common.tsx

@@ -73,13 +73,19 @@ export function ContextMenu({
 
   useEffect(() => {
     if (!menu) return;
-    const close = () => onClose();
+    // pointerdown(capture) 关闭：打开菜单的那次交互已完成 pointerdown，
+    // 不会被自己关掉（click 监听在 WKWebView 等环境存在"即开即关"竞态）
+    const close = (e: Event) => {
+      const panel = ref.current;
+      if (panel && e.target instanceof Node && panel.contains(e.target)) return;
+      onClose();
+    };
     const onKey = (e: KeyboardEvent) => e.key === "Escape" && onClose();
-    window.addEventListener("click", close);
+    window.addEventListener("pointerdown", close, true);
     window.addEventListener("resize", close);
     window.addEventListener("keydown", onKey);
     return () => {
-      window.removeEventListener("click", close);
+      window.removeEventListener("pointerdown", close, true);
       window.removeEventListener("resize", close);
       window.removeEventListener("keydown", onKey);
     };