feat(signup): 优化步骤 3 收尾阶段的错误处理与日志记录

tests/background-signup-step2-branching.test.js

@@ -175,8 +175,12 @@ test('signup flow helper reuses existing managed alias email when it is still co
 test('signup flow helper finalizes step 3 submit by reusing signup verification preparation', async () => {
   let ensureCalls = 0;
   const messages = [];
+  const logs = [];
 
   const helpers = signupFlowApi.createSignupFlowHelpers({
+    addLog: async (message, level = 'info') => {
+      logs.push({ message, level });
+    },
     buildGeneratedAliasEmail: () => '',
     chrome: { tabs: { get: async () => ({ id: 31, url: 'https://auth.openai.com/create-account/password' }) } },
     ensureContentScriptReadyOnTab: async (...args) => {
@@ -188,6 +192,7 @@ test('signup flow helper finalizes step 3 submit by reusing signup verification
     isGeneratedAliasProvider: () => false,
     isReusableGeneratedAliasEmail: () => false,
     isHotmailProvider: () => false,
+    isRetryableContentScriptTransportError: () => false,
     isLuckmailProvider: () => false,
     isSignupEmailVerificationPageUrl: () => false,
     isSignupPasswordPageUrl: () => true,
@@ -206,6 +211,7 @@ test('signup flow helper finalizes step 3 submit by reusing signup verification
 
   assert.deepStrictEqual(result, { ready: true, retried: 1 });
   assert.equal(ensureCalls, 1);
+  assert.deepStrictEqual(logs, []);
   assert.deepStrictEqual(messages.find((item) => item.type === 'send')?.message, {
     type: 'PREPARE_SIGNUP_VERIFICATION',
     step: 3,
@@ -217,3 +223,45 @@ test('signup flow helper finalizes step 3 submit by reusing signup verification
     },
   });
 });
+
+test('signup flow helper rewrites retryable step 3 finalize transport timeout into a Chinese error', async () => {
+  const logs = [];
+
+  const helpers = signupFlowApi.createSignupFlowHelpers({
+    addLog: async (message, level = 'info') => {
+      logs.push({ message, level });
+    },
+    buildGeneratedAliasEmail: () => '',
+    chrome: { tabs: { get: async () => ({ id: 31, url: 'https://auth.openai.com/create-account/password' }) } },
+    ensureContentScriptReadyOnTab: async () => {},
+    ensureHotmailAccountForFlow: async () => ({}),
+    ensureLuckmailPurchaseForFlow: async () => ({}),
+    isGeneratedAliasProvider: () => false,
+    isReusableGeneratedAliasEmail: () => false,
+    isHotmailProvider: () => false,
+    isRetryableContentScriptTransportError: (error) => /did not respond in 45s/i.test(error?.message || String(error || '')),
+    isLuckmailProvider: () => false,
+    isSignupEmailVerificationPageUrl: () => false,
+    isSignupPasswordPageUrl: () => true,
+    reuseOrCreateTab: async () => 31,
+    sendToContentScriptResilient: async () => {
+      throw new Error('Content script on signup-page did not respond in 45s. Try refreshing the tab and retry.');
+    },
+    setEmailState: async () => {},
+    SIGNUP_ENTRY_URL: 'https://chatgpt.com/',
+    SIGNUP_PAGE_INJECT_FILES: ['content/utils.js', 'content/signup-page.js'],
+    waitForTabUrlMatch: async () => null,
+  });
+
+  await assert.rejects(
+    () => helpers.finalizeSignupPasswordSubmitInTab(31, 'Secret123!', 3),
+    /步骤 3：认证页在提交后切换过程中页面通信超时，未能重新就绪，暂时无法确认是否进入下一页面。请重试当前轮。/
+  );
+
+  assert.deepStrictEqual(logs, [
+    {
+      message: '步骤 3：认证页在提交后切换过程中页面通信超时，未能重新就绪，暂时无法确认是否进入下一页面。请重试当前轮。',
+      level: 'warn',
+    },
+  ]);
+});