@@ -19,3 +19,20 @@ For concurrent runners, build once with `pnpm --filter @uselexora/lexora-buddy e
 Successful tests remove only their own instance data. Failed tests retain it for inspection; set `LEXORA_TEST_KEEP_DATA=1` to retain successful test data too. Each invocation writes a separate Playwright report under `.playwright/runs/<runId>`, with instance diagnostics, screenshots and traces attached.
 
 Electron tests import `test` and `expect` from `fixtures/electron.mjs`. Scenarios belong in `__tests__/*.e2e.mjs`; helper unit tests use Vitest in `__tests__/*.spec.mjs`.
+
+## 文件 / Markdown 选区引用
+
+场景文件：`__tests__/selectionReferences.e2e.mjs`。使用上述隔离测试实例，验证真实文字选区、组件右键菜单、未分屏的“引用到对话”、原正文与焦点保留、来源编辑器撤销，以及真实双分屏下向指定另一草稿添加引用。
+
+构建一次后可连续验证：
+
+```sh
+pnpm --filter @uselexora/lexora-buddy exec electron-vite build
+pnpm exec playwright test --config .playwright/scripts/playwright.config.mjs selectionReferences.e2e.mjs --repeat-each=2
+```
+
+创建测试空间仅是准备步骤：等待输入框就绪后分派 DOM 点击事件打开弹窗，避免启动期焦点或悬停状态造成不稳定；这一准备步骤不代表键盘创建空间已验收。实际引用操作仍使用真实键盘选区、鼠标右键和组件菜单点击。
+
+主菜单和子菜单的长文字采用 DOM 文本夹具验证宽度上限与省略，不修改真实任务名称或身份。复制命令在测试实例主进程中拦截，仅验证可信接口分派，不读取或改变用户的系统剪贴板；它不代表剪贴板实际内容已经验收。引用菜单使用真实 NDropdown（下拉菜单组件）点击，不再以 Electron `Menu.popup`（弹出菜单接口）的点击测试桩代替。
+
+开发预览仍使用隔离的 `development` 配置，安装版不在测试操作范围内。该场景不调用真实模型，也不替代人工桌面验收；完整范围见 `docs/specs/feature-013-workbench-selection-reference.md`。
@@ -0,0 +1,206 @@
+import { Buffer } from 'node:buffer'
+import fs from 'node:fs/promises'
+import { createServer } from 'node:http'
+import path from 'node:path'
+import { DatabaseSync } from 'node:sqlite'
+import { expect, test } from '../fixtures/electron.mjs'
+
+test('built-in artifact previews quote Markdown and source text to one selected draft and send frozen content', async ({ buddy }) => {
+  const instance = await buddy.createInstance('artifact-selection')
+  const directory = path.join(instance.home, 'documents')
+  await fs.mkdir(directory)
+  await fs.writeFile(path.join(directory, 'report.md'), '# Artifact report\n\nFrozen artifact paragraph.\n')
+  await fs.writeFile(path.join(directory, 'data.csv'), 'item,budget,actual\nsoftware,500,800\n')
+  await fs.writeFile(path.join(directory, 'code.ts'), 'export const answer = 42\n')
+  await fs.writeFile(path.join(directory, 'image.png'), Buffer.from('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAwMCAO+aDv8AAAAASUVORK5CYII=', 'base64'))
+  await fs.writeFile(path.join(directory, 'unsupported.pdf'), '%PDF-1.4\nFixture placeholder\n')
+  const requests = []
+  const server = createServer(async (request, response) => {
+    const chunks = []
+    for await (const chunk of request)
+      chunks.push(chunk)
+    const body = JSON.parse(Buffer.concat(chunks).toString('utf8'))
+    requests.push(body)
+    const common = { id: `artifact-${requests.length}`, model: 'artifact-fixture', object: 'chat.completion.chunk', created: 1 }
+    const publishing = requests.length === 1
+    const delta = publishing
+      ? { tool_calls: [{ index: 0, id: 'present-fixtures', type: 'function', function: { name: 'lexora_output_present', arguments: JSON.stringify({ paths: ['report.md', 'data.csv', 'code.ts', 'image.png', 'unsupported.pdf'] }) } }] }
+      : { content: 'Fixture reply.' }
+    response.writeHead(200, { 'content-type': 'text/event-stream' })
+    response.write(`data: ${JSON.stringify({ ...common, choices: [{ index: 0, delta: { role: 'assistant', ...delta }, finish_reason: null }] })}\n\n`)
+    response.write(`data: ${JSON.stringify({ ...common, choices: [{ index: 0, delta: {}, finish_reason: publishing ? 'tool_calls' : 'stop' }], usage: { prompt_tokens: 32, completion_tokens: 8, total_tokens: 40 } })}\n\n`)
+    response.end('data: [DONE]\n\n')
+  })
+  await new Promise(resolve => server.listen(0, '127.0.0.1', resolve))
+  try {
+    const { app, page, diagnostics } = await instance.launch()
+    // Synthetic credentials only, inside the isolated Test profile. No user keys or remote model calls.
+    await app.evaluate(({ app, safeStorage }) => {
+      if (app.getName() !== 'Lexora Buddy Test')
+        throw new Error('Synthetic credentials require the Test profile')
+      Object.defineProperties(safeStorage, {
+        isEncryptionAvailable: { configurable: true, value: () => true },
+        getSelectedStorageBackend: { configurable: true, value: () => 'offline-fixture' },
+        encryptString: { configurable: true, value: value => Buffer.from(`offline-fixture:${value}`) },
+        decryptString: { configurable: true, value: (value) => {
+          const text = value.toString('utf8')
+          if (!text.startsWith('offline-fixture:'))
+            throw new Error('Unexpected test credential')
+          return text.slice('offline-fixture:'.length)
+        } },
+      })
+    })
+    await page.evaluate(() => window.lexoraDesktop.localChat.runtime.restart())
+    await expect.poll(async () => (await page.evaluate(() => window.lexoraDesktop.localChat.runtime.getStatus())).status).toBe('ready')
+    await page.evaluate(async (baseUrl) => {
+      await window.lexoraDesktop.settings.update({ desktop: { contextPanelMode: 'task' } })
+      const providers = window.lexoraDesktop.localChat.providers
+      await providers.upsertCustom({ id: 'artifact-fixture', displayName: 'Artifact fixture', api: 'openai-completions', baseUrl, enabled: true, models: [{ id: 'artifact-fixture', name: 'Artifact fixture', input: ['text'], reasoning: false, contextWindow: 128000, maxTokens: 1024 }] })
+      const stop = providers.onAuthChallenge((challenge) => {
+        if (challenge.providerId === 'artifact-fixture' && challenge.type === 'secret')
+          void providers.respondToAuth(challenge.challengeId, 'offline-fixture-key')
+      })
+      try {
+        await providers.login('artifact-fixture', 'api_key')
+      }
+      finally {
+        stop()
+      }
+      await providers.setDefaultModel({ providerId: 'artifact-fixture', modelId: 'artifact-fixture', reasoning: null })
+    }, `http://127.0.0.1:${server.address().port}/v1`)
+    await app.evaluate(({ dialog, BrowserWindow }, directory) => {
+      dialog.showOpenDialog = async () => ({ canceled: false, filePaths: [directory] })
+      globalThis.artifactSelectionCopies = 0
+      for (const window of BrowserWindow.getAllWindows())
+        window.webContents.copy = () => globalThis.artifactSelectionCopies += 1
+    }, directory)
+    await page.reload()
+    const section = page.locator('.desktop-task-sidebar__spaces')
+    await expect(page.locator('.desktop-workbench-area__tasks .tiptap:visible')).toBeVisible()
+    await section.locator('.desktop-task-sidebar__section-add').dispatchEvent('click')
+    const dialog = page.locator('.desktop-space-dialog')
+    await dialog.getByPlaceholder('输入空间名称').fill('产出引用验收')
+    await dialog.getByRole('button', { name: '选择目录', exact: true }).click()
+    await dialog.getByRole('button', { name: '确定', exact: true }).click()
+    await expect(dialog).toBeHidden()
+    const inputs = page.locator('.desktop-workbench-area__tasks .tiptap:visible')
+    const firstInput = inputs.first()
+    await firstInput.fill('Publish the prepared fixture outputs.')
+    await page.getByRole('button', { name: '发送消息', exact: true }).click()
+    await expect.poll(() => completedRuns(instance.home)).toBe(1)
+    const outputs = page.locator('.buddy-artifact-collection__item')
+    await expect(outputs).toHaveCount(5)
+    await firstInput.fill('Keep my latest artifact question.')
+    const surface = page.locator('.desktop-artifact-context-surface')
+    const menu = page.locator('.resource-selection-menu.n-dropdown:visible').first()
+    const cards = page.locator('.desktop-chat-composer-wrap .resource-quote-card')
+    async function open(name) {
+      await outputs.filter({ has: page.locator(`.buddy-artifact-collection__name:text-is("${name}")`) }).click()
+      await expect(surface).toBeVisible()
+    }
+    async function selectParagraph() {
+      const paragraph = surface.locator('.desktop-document-content__markdown p').filter({ hasText: 'Frozen artifact paragraph.' })
+      await expect(paragraph).toBeVisible()
+      await paragraph.evaluate((element) => {
+        const range = document.createRange()
+        range.selectNodeContents(element)
+        window.getSelection().removeAllRanges()
+        window.getSelection().addRange(range)
+      })
+      await paragraph.click({ button: 'right' })
+      await expect(menu).toBeVisible()
+    }
+    async function selectSource(text) {
+      const editor = surface.locator('.desktop-monaco-file')
+      await expect(editor.locator('.view-lines')).toContainText(text)
+      const content = editor.locator('.monaco-scrollable-element').first()
+      await content.click({ position: { x: 100, y: 12 } })
+      await page.keyboard.press('Control+Home')
+      await page.keyboard.press('Shift+End')
+      await content.click({ button: 'right', position: { x: 100, y: 12 } })
+      await expect(menu).toBeVisible()
+    }
+    await open('report.md')
+    await selectParagraph()
+    await menu.getByRole('menuitem', { name: '引用到对话', exact: true }).click()
+    await expect(cards).toHaveCount(1)
+    await expect(cards.first()).toContainText('本轮产出 · report.md')
+    await expect(firstInput).toHaveText('Keep my latest artifact question.')
+    expect(completedRuns(instance.home)).toBe(1)
+    await selectParagraph()
+    await menu.getByRole('menuitem', { name: '引用到对话', exact: true }).click()
+    await expect(cards).toHaveCount(1)
+    await expect(page.locator('.n-message')).toHaveCount(0)
+    await cards.first().locator('.resource-quote-card__preview').click()
+    await expect(page.locator('.resource-quote-preview:visible pre')).toHaveText('Frozen artifact paragraph.')
+    await page.getByRole('button', { name: '定位来源', exact: true }).click()
+    await expect(surface).toBeVisible()
+    await page.keyboard.press('Escape')
+    await surface.getByTestId('document-mode-source').click()
+    await selectSource('# Artifact report')
+    await menu.getByRole('menuitem', { name: '引用到对话', exact: true }).click()
+    await expect(cards).toHaveCount(2)
+    await expect(cards.last()).toContainText('L1–1')
+    await open('data.csv')
+    await selectSource('item,budget,actual')
+    await menu.getByRole('menuitem', { name: '引用到对话', exact: true }).click()
+    await expect(cards).toHaveCount(3)
+    await open('unsupported.pdf')
+    await expect(surface).toContainText('暂不支持在此预览该文件')
+    await expect(surface.locator('.desktop-document-content')).toHaveCount(0)
+    await open('image.png')
+    await expect(surface.locator('img')).toBeVisible()
+    await expect(surface.locator('.desktop-document-content')).toHaveCount(0)
+    await open('code.ts')
+    await selectSource('export const answer = 42')
+    await expect(menu.getByRole('menuitem', { name: '复制', exact: true })).toHaveCount(1)
+    await menu.getByRole('menuitem', { name: '复制', exact: true }).click()
+    await expect.poll(() => app.evaluate(() => globalThis.artifactSelectionCopies)).toBe(1)
+    await expect(cards).toHaveCount(3)
+    await firstInput.click()
+    await page.keyboard.press('Control+\\')
+    await expect(inputs).toHaveCount(2)
+    await inputs.nth(1).fill('Explain the frozen artifact code.')
+    await firstInput.click()
+    await selectSource('export const answer = 42')
+    await menu.getByRole('menuitem', { name: '引用到其他对话', exact: true }).hover()
+    const child = page.locator('.resource-selection-menu.n-dropdown:visible').filter({ has: page.locator('.resource-selection-menu-option__label').filter({ hasText: /^分屏 2/ }) }).last()
+    await child.getByRole('menuitem', { name: /^分屏 2/ }).click()
+    await expect(cards).toHaveCount(4)
+    await expect(inputs.nth(1)).toHaveText('Explain the frozen artifact code.')
+    await expect(firstInput).toHaveText('Keep my latest artifact question.')
+    await page.screenshot({ path: path.join(instance.artifactDirectory, 'artifact-reference-split.png'), animations: 'disabled' })
+    await fs.writeFile(path.join(directory, 'code.ts'), 'export const answer = 999\n')
+    await inputs.nth(1).click()
+    await page.locator('.desktop-workbench-area__tasks .desktop-task-editor').last().getByRole('button', { name: '发送消息', exact: true }).click()
+    await expect.poll(() => completedRuns(instance.home)).toBe(2)
+    const sent = JSON.stringify(requests.at(-1).messages)
+    expect(sent).toContain('export const answer = 42')
+    expect(sent).not.toContain('export const answer = 999')
+    const userMessage = requests.at(-1).messages.findLast(message => message.role === 'user')
+    const userText = typeof userMessage.content === 'string' ? userMessage.content : userMessage.content.filter(part => part.type === 'text').map(part => part.text).join('\n')
+    expect(userText).toContain('"title":"code.ts"')
+    expect(userText).toContain('"format":"source"')
+    for (const field of ['kind', 'artifactId', 'conversationId', 'runId', 'updatedAt', 'spaceId', 'directoryId', 'revision', 'id', 'textOffset'])
+      expect(userText).not.toContain(`"${field}":`)
+    expect(sent).toContain('not access grants')
+    await expect(cards).toHaveCount(3)
+    await page.screenshot({ path: path.join(instance.artifactDirectory, 'artifact-reference-after-send.png'), animations: 'disabled' })
+    expect(diagnostics.console.filter(item => item.type === 'pageerror')).toEqual([])
+  }
+  finally {
+    await instance.stop()
+    server.closeAllConnections()
+    await new Promise(resolve => server.close(resolve))
+  }
+})
+
+function completedRuns(home) {
+  const database = new DatabaseSync(path.join(home, 'buddy/buddy.sqlite3'), { readOnly: true })
+  try {
+    return database.prepare('SELECT COUNT(*) AS count FROM runs WHERE status = ?').get('completed').count
+  }
+  finally {
+    database.close()
+  }
+}