fix(ui): Toast 撤销可暂停，存储告警提升为全局

- Toast 自动关闭支持悬停/聚焦暂停，移开后按剩余时间继续
- 存储异常提示移到 App 级，看板与今日视图都能看到
- 归档隐藏与筛选隐藏分开说明，并提示列内排序暂停原因

src/components/ToastHost.spec.ts

@@ -46,9 +46,7 @@ describe('ToastHost', () => {
     store.show({ message: '已删除', action: { label: '撤销', run }, duration: 0 })
     await wrapper.vm.$nextTick()
 
-    const actionButton = wrapper
-      .findAll('button')
-      .find((node) => node.text() === '撤销')
+    const actionButton = wrapper.findAll('button').find((node) => node.text() === '撤销')
     expect(actionButton).toBeDefined()
 
     await actionButton?.trigger('click')
@@ -70,4 +68,25 @@ describe('ToastHost', () => {
     await wrapper.vm.$nextTick()
     expect(wrapper.find('[role="status"]').exists()).toBe(true)
   })
+
+  it('悬停时暂停自动关闭，移开后继续', async () => {
+    vi.useFakeTimers()
+    try {
+      const { store, wrapper } = setup()
+      store.show({ message: '可撤销', duration: 1000 })
+      await wrapper.vm.$nextTick()
+
+      const toast = wrapper.find('[role="status"]')
+      await toast.trigger('mouseenter')
+
+      vi.advanceTimersByTime(10_000)
+      expect(store.toasts).toHaveLength(1)
+
+      await toast.trigger('mouseleave')
+      vi.advanceTimersByTime(1000)
+      expect(store.toasts).toHaveLength(0)
+    } finally {
+      vi.useRealTimers()
+    }
+  })
 })

src/components/ToastHost.vue

@@ -16,6 +16,10 @@ const { toasts } = storeToRefs(store)
       :key="toast.id"
       role="status"
       class="pointer-events-auto flex w-full max-w-sm items-center gap-3 rounded-md bg-slate-800 px-3 py-2 text-sm text-white shadow-panel dark:bg-zinc-100 dark:text-zinc-900"
+      @mouseenter="store.pause(toast.id)"
+      @mouseleave="store.resume(toast.id)"
+      @focusin="store.pause(toast.id)"
+      @focusout="store.resume(toast.id)"
     >
       <span class="min-w-0 flex-1 wrap-break-word">{{ toast.message }}</span>