feat(auth): 小程序登录采集微信昵称

src/components/auth/AccountModal.test.tsx

@@ -177,6 +177,23 @@ test('account panel uses compact binding cards and keeps logout actions at the b
   ).toBe('true');
 });
 
+test('account panel avoids bare bound label when wechat display name is missing', () => {
+  renderAccountModal({
+    entryMode: 'account',
+    user: {
+      ...baseUser,
+      wechatDisplayName: null,
+      wechatAccount: 'openid_abcdef123456',
+    },
+  });
+
+  const accountDialog = screen.getByRole('dialog', { name: '账号信息' });
+  expect(within(accountDialog).getByText('绑定微信')).toBeTruthy();
+  expect(within(accountDialog).getByText('微信账号尾号 123456')).toBeTruthy();
+  expect(within(accountDialog).queryByText('openid_abcdef123456')).toBeNull();
+  expect(within(accountDialog).queryByText('已绑定')).toBeNull();
+});
+
 test('account actions open in independent panels instead of inline expansion', async () => {
   const user = userEvent.setup();