diff --git a/src/apps/launchpad/Launchpad.vue b/src/apps/launchpad/Launchpad.vue
index 0ada1d8..eb07b6e 100644
--- a/src/apps/launchpad/Launchpad.vue
+++ b/src/apps/launchpad/Launchpad.vue
@@ -1 +1,74 @@
-<template><div></div></template>
+<template>
+  <div class="launchpad" tabindex="0" @keydown.escape="hide" @click.self="hide">
+    <div class="lp-search-wrap">
+      <input
+        ref="searchEl"
+        class="lp-search"
+        type="search"
+        placeholder="搜索 App"
+        v-model="query"
+        @input="onSearch"
+        @keydown.stop.escape="hide"
+      >
+    </div>
+    <div class="lp-grid">
+      <div v-if="!filteredApps.length" class="lp-empty">没有匹配的 App</div>
+      <div
+        v-for="app in filteredApps" :key="app.id"
+        class="lp-cell"
+        @click="openApp(app.id)"
+      >
+        <img :src="app.icon" alt="" @error="onIconError($event)">
+        <div class="lp-name">{{ app.name }}</div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, onMounted, nextTick, watch } from 'vue'
+import { Apps } from '../../composables/useApps'
+
+const emit = defineEmits<{ hide: [] }>()
+
+const query = ref('')
+const searchEl = ref<HTMLInputElement>()
+
+// 所有已注册应用（排除自身、过滤未安装商店应用）
+const allApps = computed(() => {
+  const appStoreApp = (window as any).__launchpadAppStore
+  return Object.values(Apps.registry)
+    .filter((a: any) => a.id !== 'launchpad')
+    .filter((a: any) => !a.storeApp || (appStoreApp && appStoreApp.isInstalled(a.id)))
+    .sort((a: any, b: any) => a.name.localeCompare(b.name, 'zh-Hans-CN'))
+})
+
+const filteredApps = computed(() => {
+  if (!query.value) return allApps.value
+  const q = query.value.toLowerCase()
+  return allApps.value.filter(a => a.name.toLowerCase().includes(q))
+})
+
+function onSearch() { /* query 已绑定 */ }
+
+function openApp(id: string) {
+  hide()
+  Apps.open(id)
+}
+
+function hide() { emit('hide') }
+
+function onIconError(e: Event) {
+  (e.target as HTMLImageElement).src = '/assets/icons/appstore.png'
+}
+
+// 暴露给父级（Launchpad 对象）
+defineExpose({ query, searchEl })
+
+onMounted(() => {
+  nextTick(() => {
+    searchEl.value?.focus()
+  })
+})
+</script>
+
diff --git a/src/apps/launchpad/index.ts b/src/apps/launchpad/index.ts
index 7dd303d..eb10c79 100644
--- a/src/apps/launchpad/index.ts
+++ b/src/apps/launchpad/index.ts
@@ -1,56 +1,43 @@
+// 启动台 — Vue 组件化 overlay
 import { h, render } from 'vue'
-// 启动台应用 — 从 js/apps3.js 手动转写
-import { el, iconImg } from '../../utils'
 import { Apps, stdMenus } from '../../composables/useApps'
 import LaunchpadComponent from './Launchpad.vue'
-import { ui as UI } from '../../composables/useUI'
+import { ui } from '../../composables/useUI'
 
 let _AppStoreApp: any = null
 export function setAppStoreForLaunchpad(a: any) { _AppStoreApp = a }
 
 export const Launchpad = {
   overlay: null as HTMLElement | null,
+  vnode: null as any,
+
   show() {
     if (this.overlay) return this.hide()
-    const ov = el('div', { class: 'launchpad', tabindex: '0' })
-    const search = el('input', { class: 'lp-search', type: 'search', placeholder: '搜索 App' }) as HTMLInputElement
-    const grid = el('div', { class: 'lp-grid' })
-    ov.append(el('div', { class: 'lp-search-wrap' }, search), grid)
-    const renderGrid = (q: string) => {
-      grid.innerHTML = ''
-      const apps = Object.values(Apps.registry)
-        .filter((a: any) => a.id !== 'launchpad' && (!a.storeApp || (_AppStoreApp && _AppStoreApp.isInstalled(a.id))))
-        .filter((a: any) => !q || a.name.toLowerCase().includes(q.toLowerCase()))
-      if (!apps.length) grid.append(el('div', { class: 'lp-empty', text: '没有匹配的 App' }))
-      ;(apps as any[]).sort((a: any, b: any) => a.name.localeCompare(b.name, 'zh-Hans-CN')).forEach((app: any) => {
-        const c = el('div', { class: 'lp-cell' }, iconImg(app.icon, '', app.name), el('div', { class: 'lp-name', text: app.name }))
-        c.addEventListener('click', () => { this.hide(); Apps.open(app.id) })
-        grid.append(c)
-      })
-    }
-    renderGrid('')
-    search.addEventListener('input', () => renderGrid(search.value.trim()))
-    search.addEventListener('keydown', (e: KeyboardEvent) => { e.stopPropagation(); if (e.key === 'Escape') this.hide() })
-    ov.addEventListener('keydown', (e: KeyboardEvent) => { if (e.key === 'Escape') this.hide() })
-    ov.addEventListener('click', (e: Event) => { if (e.target === ov) this.hide() })
-    document.body.append(ov)
-    this.overlay = ov
-    setTimeout(() => { ov.classList.add('show'); search.focus() }, 10)
+    const container = document.createElement('div')
+    this.vnode = h(LaunchpadComponent, {
+      onHide: () => this.hide(),
+    })
+    render(this.vnode, container)
+    document.body.append(container)
+    this.overlay = container
+    setTimeout(() => { container.firstElementChild?.classList.add('show') }, 10)
   },
+
   hide() {
     if (!this.overlay) return
     const ov = this.overlay; this.overlay = null
-    ov.classList.remove('show'); setTimeout(() => ov.remove(), 250)
-  }
-};
-(window as any).Launchpad = Launchpad
+    ov.firstElementChild?.classList.remove('show')
+    setTimeout(() => { render(null, ov); ov.remove() }, 250)
+  },
+}
+;(window as any).Launchpad = Launchpad
 
-// 注册启动台应用
+// 注册启动台
 Apps.register({
   id: 'launchpad', name: '启动台', icon: '/assets/icons/launchpad.png',
   menus() { return stdMenus(this) },
-  render() { /* 不走 WM 窗口 */ },
-  open() { Launchpad.show() }
+  render() {},
+  open() { Launchpad.show() },
 })
 
 // 扩展 Apps.open：拦截 launchpad/stickies/storeApp
@@ -60,7 +47,7 @@ Apps.open = function (id: string, args?: any) {
   if (id === 'stickies' && !(args && args.noteId)) { (Apps.get('stickies') as any)?.openAll(); return null }
   const app = this.get(id)
   if (app && app.storeApp && !(_AppStoreApp && _AppStoreApp.isInstalled(id))) {
-    UI.alert('尚未安装', `请先在 App Store 中获取"${app.name}"。`, '/assets/icons/appstore.png')
+    ui.alert('尚未安装', `请先在 App Store 中获取"${app.name}"。`, '/assets/icons/appstore.png')
     return null
   }
   return _origOpen(id, args)
diff --git a/tests/cases/28-launchpad.test.ts b/tests/cases/28-launchpad.test.ts
new file mode 100644
index 0000000..b68f1f4
--- /dev/null
+++ b/tests/cases/28-launchpad.test.ts
@@ -0,0 +1,135 @@
+/**
+ * 28-launchpad: Launchpad Vue 组件化测试
+ * 覆盖: show/hide、搜索过滤、网格排序、Escape/背景关闭、storeApp 过滤
+ */
+import { describe, it, expect, beforeEach, afterEach } from 'vitest'
+import { nextTick } from 'vue'
+import { setupDOM, bootSystem } from '../helpers'
+import { Launchpad } from '../../src/apps/launchpad/index'
+import { Apps } from '../../src/composables/useApps'
+
+describe('28-launchpad — Vue 组件化', () => {
+  beforeEach(async () => {
+    localStorage.clear()
+    await bootSystem()
+  })
+  afterEach(() => { Launchpad.hide() })
+
+  // ==================== show/hide ====================
+  describe('show/hide', () => {
+    it('show() 创建 overlay', () => {
+      Launchpad.show()
+      expect(document.querySelector('.launchpad')).toBeTruthy()
+    })
+
+    it('第二次 show() 先 hide 再 show（不重复）', () => {
+      Launchpad.show()
+      Launchpad.show()
+      expect(document.querySelectorAll('.launchpad').length).toBe(1)
+    })
+
+    it('hide() 移除 overlay（250ms 后）', async () => {
+      Launchpad.show()
+      Launchpad.hide()
+      await new Promise(r => setTimeout(r, 300))
+      expect(document.querySelector('.launchpad')).toBeNull()
+    })
+  })
+
+  // ==================== 结构 ====================
+  describe('结构', () => {
+    it('有搜索框', () => {
+      Launchpad.show()
+      expect(document.querySelector('.lp-search')).toBeTruthy()
+    })
+
+    it('有应用网格', () => {
+      Launchpad.show()
+      expect(document.querySelector('.lp-grid')).toBeTruthy()
+      expect(document.querySelectorAll('.lp-cell').length).toBeGreaterThan(0)
+    })
+
+    it('应用按名称排序', () => {
+      Launchpad.show()
+      const names = [...document.querySelectorAll('.lp-name')].map(e => e.textContent || '')
+      const sorted = [...names].sort((a, b) => a.localeCompare(b, 'zh-Hans-CN'))
+      expect(names).toEqual(sorted)
+    })
+
+    it('不包含自身（launchpad）', () => {
+      Launchpad.show()
+      const names = [...document.querySelectorAll('.lp-name')].map(e => e.textContent)
+      expect(names).not.toContain('启动台')
+    })
+  })
+
+  // ==================== 搜索 ====================
+  describe('搜索', () => {
+    it('输入关键字过滤应用', async () => {
+      Launchpad.show()
+      const input = document.querySelector('.lp-search') as HTMLInputElement
+      input.value = '终端'
+      input.dispatchEvent(new Event('input', { bubbles: true }))
+      await nextTick()
+      const names = [...document.querySelectorAll('.lp-name')].map(e => e.textContent)
+      expect(names.length).toBeGreaterThanOrEqual(1)
+      expect(names.every(n => n!.includes('终端'))).toBe(true)
+    })
+
+    it('无匹配显示"没有匹配的 App"', async () => {
+      Launchpad.show()
+      const input = document.querySelector('.lp-search') as HTMLInputElement
+      input.value = 'zzzzz_no_match'
+      input.dispatchEvent(new Event('input', { bubbles: true }))
+      await nextTick()
+      expect(document.querySelector('.lp-empty')?.textContent).toContain('没有匹配')
+    })
+
+    it('清除搜索恢复全量', async () => {
+      Launchpad.show()
+      const input = document.querySelector('.lp-search') as HTMLInputElement
+      input.value = '终端'; input.dispatchEvent(new Event('input', { bubbles: true }))
+      await nextTick()
+      const filtered = document.querySelectorAll('.lp-cell').length
+      input.value = ''; input.dispatchEvent(new Event('input', { bubbles: true }))
+      await nextTick()
+      expect(document.querySelectorAll('.lp-cell').length).toBeGreaterThan(filtered)
+    })
+  })
+
+  // ==================== 关闭 ====================
+  describe('关闭', () => {
+    it('Escape 键关闭', async () => {
+      Launchpad.show()
+      const lp = document.querySelector('.launchpad') as HTMLElement
+      lp.dispatchEvent(new KeyboardEvent('keydown', { key: 'Escape', bubbles: true }))
+      await new Promise(r => setTimeout(r, 300))
+      expect(document.querySelector('.launchpad')).toBeNull()
+    })
+
+    it('点击背景关闭', async () => {
+      Launchpad.show()
+      const lp = document.querySelector('.launchpad') as HTMLElement
+      lp.dispatchEvent(new MouseEvent('click', { bubbles: true }))
+      await new Promise(r => setTimeout(r, 300))
+      expect(document.querySelector('.launchpad')).toBeNull()
+    })
+
+    it('点击应用单元格关闭并打开应用', async () => {
+      Launchpad.show()
+      const cell = document.querySelector('.lp-cell') as HTMLElement
+      cell.dispatchEvent(new MouseEvent('click', { bubbles: true }))
+      await new Promise(r => setTimeout(r, 300))
+      expect(document.querySelector('.launchpad')).toBeNull()
+    })
+  })
+
+  // ==================== Apps.open 拦截 ====================
+  describe('Apps.open 拦截', () => {
+    it('open("launchpad") 调用 show', () => {
+      const result = Apps.open('launchpad')
+      expect(document.querySelector('.launchpad')).toBeTruthy()
+      expect(result).toBeNull()
+    })
+  })
+})