feat: release contextual omnichannel customer platform

Add Telegram, WhatsApp and email account management, realtime messaging, contextual multilingual AI, customer intelligence, knowledge workflows, enterprise controls, a unified design system and complete repository documentation.

tests/e2e/lingxi.spec.ts

@@ -177,6 +177,16 @@ test('登录与核心工作台视觉链路', async ({ page }, testInfo) => {
   await page.getByText('薄荷绿', { exact: true }).click()
   await expect(page.getByTestId('message-list')).toHaveClass(/chat-wallpaper-mint/)
   await expect(page.getByPlaceholder('输入回复内容，Enter 发送，Shift+Enter 换行')).toHaveClass(/min-h-\[86px\]/)
+  const targetLanguage = page.getByLabel('客户目标语言')
+  await expect(targetLanguage).toBeVisible()
+  if (testInfo.project.name !== 'mobile-chromium') {
+    await targetLanguage.selectOption('es')
+    await expect(targetLanguage).toHaveValue('es')
+    await page.reload()
+    await expect(page.getByLabel('客户目标语言')).toHaveValue('es')
+    await page.getByLabel('客户目标语言').selectOption('auto')
+    await expect(page.getByLabel('客户目标语言')).toHaveValue('auto')
+  }
   await page.screenshot({ path: testInfo.outputPath('inbox.png'), fullPage: true })
 })
 
@@ -205,7 +215,8 @@ test('conversation list reorders immediately from WebSocket events', async ({ pa
   await page.goto('/inbox')
   const items = page.getByTestId('conversation-item')
   await expect(items.nth(1)).toBeVisible()
-  await expect.poll(() => sockets.length).toBeGreaterThanOrEqual(2)
+  // 页面跳转可能复用现有应用外壳，也可能重新建立连接；只要求当前至少存在一条可用连接。
+  await expect.poll(() => sockets.length).toBeGreaterThanOrEqual(1)
 
   const target = items.nth(1)
   const targetId = await target.getAttribute('data-conversation-id')
@@ -245,10 +256,10 @@ test('知识文件真实上传解析', async ({ page }, testInfo) => {
   await page.locator('input[type="file"]').setInputFiles({
     name: `visual-e2e-${testInfo.project.name}.txt`,
     mimeType: 'text/plain',
-    buffer: Buffer.from('灵犀跨境视觉 E2E 知识解析测试。'),
+    buffer: Buffer.from('灵犀跨境视觉 E2E 知识解析测试，覆盖产品资料与售后政策。'),
   })
-  await page.getByRole('button', { name: '上传并解析' }).click()
-  await expect(page.getByText(/知识文件解析完成/)).toBeVisible()
+  await page.getByRole('button', { name: /上传.*解析.*索引/ }).click()
+  await expect(page.getByText(/文件解析并建立检索索引/)).toBeVisible()
   await page.screenshot({ path: testInfo.outputPath('knowledge-uploaded.png'), fullPage: true })
 })