fix(whatsapp): unify contact identity and reduce realtime latency

server/test/business.test.js

@@ -1,6 +1,12 @@
 import test from 'node:test'
 import assert from 'node:assert/strict'
-import { countBy, dateKey, percent, telegramAttachment } from '../src/business.js'
+import {
+  countBy,
+  dateKey,
+  normalizeBusinessRelationship,
+  percent,
+  telegramAttachment,
+} from '../src/business.js'
 import { decryptEmailPassword, encryptEmailPassword } from '../src/email.js'
 import {
   HUMAN_REPLY_SYSTEM_PROMPT,
@@ -50,6 +56,11 @@ test('业务指标工具处理百分比、分组和无效日期', () => {
   )
 })
 
+test('业务关系分类使用受控类型和中文标签', () => {
+  assert.deepEqual(normalizeBusinessRelationship('supplier'), { type: 'supplier', label: '上游供应商' })
+  assert.deepEqual(normalizeBusinessRelationship('unsupported'), { type: 'unknown', label: '待确认' })
+})
+
 test('Email 渠道凭据使用认证加密且可正确解密', () => {
   process.env.EMAIL_CREDENTIAL_KEY = 'lingxi-email-test-key-with-more-than-32-bytes'
   const encrypted = encryptEmailPassword('app-password-123')

server/test/whatsapp-identity.test.js

@@ -1,11 +1,19 @@
 import assert from 'node:assert/strict'
 import test from 'node:test'
 import {
+  canonicalWhatsAppJid,
   isWeakWhatsAppDisplayName,
   reusableWhatsAppConversations,
   whatsappCustomerStableId,
 } from '../src/whatsapp-identity.js'
 
+test('WhatsApp LID resolves to the same canonical phone identity', () => {
+  const phoneJid = '15551234567@s.whatsapp.net'
+  assert.equal(canonicalWhatsAppJid('987654321@lid', { phone: '+1 555 123 4567' }), phoneJid)
+  assert.equal(canonicalWhatsAppJid('987654321@lid', { canonicalJid: phoneJid }), phoneJid)
+  assert.equal(whatsappCustomerStableId(canonicalWhatsAppJid('987654321@lid', { phone: '+1 555 123 4567' })), whatsappCustomerStableId(phoneJid))
+})
+
 test('WhatsApp customer id remains stable after gateway reauthorization', () => {
   assert.equal(
     whatsappCustomerStableId('15551234567@s.whatsapp.net'),