refactor: 移除样例页（tutorial design-examples / design-lab shelf）——组件页已含 RouteLine 演示，样例使命完成；导航/目录/视觉基线/散落契约同步清理，25/25 绿（Scatter 组件保留在包中）

apps/tutorial/src/lib/ui.tsx

@@ -7,14 +7,13 @@ import type { ChapterId } from '@stack/design-system'
 import { CHAPTERS } from './chapters'
 
 /** 设计系统四册（自 design-lab 迁入） */
-export type DesignKey = 'design-colors' | 'design-typography' | 'design-symbols' | 'design-components' | 'design-examples'
+export type DesignKey = 'design-colors' | 'design-typography' | 'design-symbols' | 'design-components'
 
 const DESIGN: { href: string; label: string; key: DesignKey }[] = [
   { href: '/design-colors.html', label: '颜色', key: 'design-colors' },
   { href: '/design-typography.html', label: '字体', key: 'design-typography' },
   { href: '/design-symbols.html', label: '符号形状', key: 'design-symbols' },
   { href: '/design-components.html', label: '组件', key: 'design-components' },
-  { href: '/design-examples.html', label: '样例', key: 'design-examples' },
 ]
 
 const NAV: { href: string; label: string; id?: ChapterId }[] = [

apps/tutorial/src/pages/design-examples/App.tsx

@@ -1,34 +0,0 @@
-/** 组合场景＝大部分组件拿出来的真实使用，不做解释性标注：
- * 入口画像 → 课程卡与关系线 → 进度票券 → 指派块；形状散落于卡片附近空当。 */
-import { Page } from '../../lib/ui'
-import { ASSIGNMENT, CHAPTERS, PROFILES } from '../../lib/chapters'
-import { AssignBlock, EntryGuide, MemphisCard, Scatter, Ticket } from '@stack/design-system'
-import { Cross, Ring, Tremble, Tri, Wave } from '@stack/design-system'
-
-export function App() {
-  return (
-    <Page active="design-examples" title="样例 · 组合场景" desc="大部分组件同台真实使用：入口画像 → 课程卡与关系线 → 进度票券 → 指派块；形状散落于卡片附近空当。">
-      <EntryGuide chapters={CHAPTERS} profiles={PROFILES} />
-      <div className="relative mt-8 h-[600px] overflow-hidden rounded-2xl bg-paper">
-        <Scatter
-          shapes={[
-            <Tri size={26} key="tri" />,
-            <Ring size={22} key="ring" />,
-            <Cross size={20} key="cross1" />,
-            <Cross size={18} key="cross2" />,
-            <Wave size={44} key="wave" />,
-            <Tremble size={20} key="tremble" />,
-          ]}
-        />
-        <div className="absolute left-[40px] top-[110px] w-[250px]"><MemphisCard chapter={CHAPTERS[1]} entry={1} /></div>
-        <div className="absolute left-[380px] top-[44px] w-[250px] -rotate-1"><MemphisCard chapter={CHAPTERS[2]} entry={2} /></div>
-        <div className="absolute left-[700px] top-[44px] w-[140px]"><MemphisCard chapter={CHAPTERS[5]} compact /></div>
-        <div className="absolute left-[820px] top-[320px]"><AssignBlock {...ASSIGNMENT} /></div>
-        <div className="absolute left-[60px] top-[440px] flex gap-4">
-          <Ticket chapter={CHAPTERS[2]} done />
-          <Ticket chapter={CHAPTERS[5]} done={false} />
-        </div>
-      </div>
-    </Page>
-  )
-}

apps/tutorial/src/pages/design-examples/main.tsx

@@ -1,4 +0,0 @@
-import { createRoot } from 'react-dom/client'
-import { App } from './App'
-
-createRoot(document.getElementById('root')!).render(<App />)