iter(g28): 浮层 Esc 逐层关闭，阻止冒泡连带关外层

packages/skin/ui/src/image.ts

@@ -35,7 +35,7 @@ function openViewer(src: string, alt?: string): void {
     document.removeEventListener('keydown', onKey);
     prev?.focus?.();
   };
-  const onKey = (e: KeyboardEvent) => e.key === 'Escape' && close();
+  const onKey = (e: KeyboardEvent) => { if (e.key !== 'Escape') return; e.stopPropagation(); close(); }; // 预览层 Esc 自关，不连带关外层
   mask.addEventListener('click', close);
   document.addEventListener('keydown', onKey);
   document.body.appendChild(mask);

packages/skin/ui/src/menu.ts

@@ -73,6 +73,7 @@ export function menu(props: MenuProps): HTMLElement {
 
   root.addEventListener('keydown', (e: KeyboardEvent) => {
     if (e.key === 'Escape') {
+      e.stopPropagation();                 // 只关本层：不再冒泡去关外层的弹窗/抽屉
       open(false);
       trigger.focus();                     // 收起后焦点回到触发器，键盘流不断
       return;

packages/skin/ui/src/popover.ts

@@ -53,6 +53,7 @@ export function popover(props: PopoverProps, trigger: HTMLElement): HTMLElement
   }
   root.addEventListener('keydown', (e: KeyboardEvent) => {
     if (e.key !== 'Escape' || !open()) return; // 卫语句：未展开时 Esc 不处理
+    e.stopPropagation();                       // 只关本层，避免连带关闭外层弹窗
     setOpen(false);
     trigger.focus();                           // 收起后焦点回触发器
   });

packages/skin/ui/src/select.ts

@@ -65,7 +65,7 @@ export function select(props: SelectProps): HTMLElement {
   };
 
   root.addEventListener('keydown', (e: KeyboardEvent) => {
-    if (e.key === 'Escape') { open(false); trigger.focus(); return; } // Esc 关闭并回焦触发器
+    if (e.key === 'Escape') { e.stopPropagation(); open(false); trigger.focus(); return; } // Esc 只关本层并回焦触发器
     if (e.key === 'ArrowDown' || e.key === 'ArrowUp') {
       e.preventDefault(); // 阻止页面滚动
       if (!open()) { open(true); options[0]?.focus(); return; } // 未展开：展开并聚焦首个选项

packages/skin/ui/src/tooltip.ts

@@ -49,7 +49,7 @@ export function tooltip(props: TooltipProps, trigger: HTMLElement): HTMLElement
   root.addEventListener('focusout', hide);      // 失焦
   effect(() => { if (open()) place(flip(trigger, bubble, props.placement ?? 'top')); }); // 每次出场重算方位：空间不足自动翻转
   root.addEventListener('keydown', (e: KeyboardEvent) => {
-    if (e.key === 'Escape') hide(); // Esc 立即收起，不必等延迟
+    if (e.key === 'Escape') { e.stopPropagation(); hide(); } // Esc 立即收起且不影响外层弹层
   });
   return root;
 }