feat: 优化档案搜索与头像

新增退群监控开关
发送限速

tests/unit/contact-avatar.test.ts

@@ -0,0 +1,34 @@
+import { describe, expect, it } from 'vitest'
+import type { Contact } from '../../src/shared/types'
+import { selectContactAvatarRefreshUsernames } from '../../src/renderer/src/utils/contact-avatar'
+
+const contact = (username: string, avatar?: string): Contact => ({
+  m_nsUsrName: username,
+  m_nsNickName: username,
+  md5: username,
+  type: username.endsWith('@chatroom') ? 'group' : 'user',
+  avatar
+})
+
+describe('selectContactAvatarRefreshUsernames', () => {
+  it('refreshes valid contacts even when they already have a cached avatar', () => {
+    expect(
+      selectContactAvatarRefreshUsernames([
+        contact('wxid_with_stale_avatar', 'https://old.example/avatar.jpg'),
+        contact('wxid_without_avatar'),
+        contact('room@chatroom', 'https://old.example/group.jpg')
+      ])
+    ).toEqual(['wxid_with_stale_avatar', 'wxid_without_avatar', 'room@chatroom'])
+  })
+
+  it('deduplicates usernames and skips synthetic contacts', () => {
+    expect(
+      selectContactAvatarRefreshUsernames([
+        contact('wxid_same'),
+        contact('wxid_same'),
+        contact('Group_fixture'),
+        contact('Unknown_fixture')
+      ])
+    ).toEqual(['wxid_same'])
+  })
+})