feat: 增强错误处理逻辑，添加 Cloudflare 风控和网络超时拦截提示

tests/step6-timeout-recovery.test.js

@@ -51,7 +51,7 @@ function extractFunction(name) {
   return source.slice(start, end);
 }
 
-test('step 7 timeout recoverable result no longer clicks retry before asking background to rerun', async () => {
+test('step 7 timeout recoverable result clicks retry before asking background to rerun', async () => {
   const api = new Function(`
 const logs = [];
 let recoverCalls = 0;
@@ -97,7 +97,7 @@ return {
   const result = await api.run();
   const snapshot = api.snapshot();
 
-  assert.equal(snapshot.recoverCalls, 0);
+  assert.equal(snapshot.recoverCalls, 1);
   assert.equal(result.step6Outcome, 'recoverable');
   assert.equal(result.reason, 'login_timeout_error_page');
   assert.equal(result.state, 'login_timeout_error_page');