axe a11y 审计扩展到登录 OTP 验证表单（input-otp 分段输入，FieldLabel htmlFor 正确关联，零违规）与人机验证小部件手动模式（零违规）。环境修复：tests/setup.ts 加 ResizeObserver mock（input-otp 依赖，jsdom 未内置）。vitest 118→120 全绿。

Result: {"status":"keep","total_issues":8,"golint_canonicalheader":0,"golint_errname":0,"golint_errorlint":1,"golint_exhaustive":0,"golint_forcetypeassert":0,"golint_gosec":0,"golint_intrange":0,"golint_modernize":3,"golint_nilnil":3,"golint_perfsprint":0,"golint_prealloc":0,"golint_recvcheck":1,"golint_usestdlibvars":0,"golint_wastedassign":0,"golint_total":8,"golint_test_testifylint":0,"golint_test_thelper":0,"golint_test_usetesting":0,"golint_test_total":0,"golint_vetx_total":0,"eslint_problems":0,"eslint_errors":0,"eslint_warnings":0,"tsc_errors":0,"vitest_failed":0,"vitest_total":120,"measure_s":71}

frontend/tests/a11y.test.tsx

@@ -6,6 +6,8 @@ import axe from 'axe-core';
 
 import { LoginPage } from '@/components/auth/login-page';
 import { RegisterPage } from '@/components/auth/register-page';
+import { OTPForm } from '@/components/auth/otp-form';
+import { CapWidget } from '@/components/auth/cap-widget';
 import { UserProvider } from '@/contexts/user-context';
 import zhCN from '@/messages/zh-CN.json';
 
@@ -100,4 +102,30 @@ describe('a11y（axe-core 结构性规则）', () => {
     await screen.findByRole('button', { name: /创建账号|submit/ });
     expect(await runAxe(document.body)).toEqual([]);
   });
+
+  it('登录 OTP 验证表单无 axe 违规', async () => {
+    renderWithProviders(
+      <main>
+        <OTPForm
+          code=''
+          setCode={() => {}}
+          loginCodeTip='验证码已发送至邮箱'
+          loginCooldown={0}
+          isPending={false}
+          onResend={() => {}}
+          onSubmit={() => {}}
+        />
+      </main>,
+    );
+
+    await screen.findByRole('button', { name: /重新发送/ });
+    expect(await runAxe(document.body)).toEqual([]);
+  });
+
+  it('人机验证小部件（手动模式）无 axe 违规', async () => {
+    renderWithProviders(<main><CapWidget autoStart={false} onToken={() => {}} /></main>);
+
+    await screen.findByRole('button');
+    expect(await runAxe(document.body)).toEqual([]);
+  });
 });

frontend/tests/setup.ts

@@ -1 +1,11 @@
 import '@testing-library/jest-dom/vitest';
+
+// input-otp（登录 OTP 组件）依赖 ResizeObserver，jsdom 未内置
+class ResizeObserverMock {
+  observe() {}
+  unobserve() {}
+  disconnect() {}
+}
+if (typeof globalThis.ResizeObserver === 'undefined') {
+  globalThis.ResizeObserver = ResizeObserverMock as unknown as typeof ResizeObserver;
+}