feat: replace cookie cleanup step with registration success wait

background/steps/clear-login-cookies.js

@@ -1,19 +0,0 @@
-(function attachBackgroundStep6(root, factory) {
-  root.MultiPageBackgroundStep6 = factory();
-})(typeof self !== 'undefined' ? self : globalThis, function createBackgroundStep6Module() {
-  function createStep6Executor(deps = {}) {
-    const {
-      completeStepFromBackground,
-      runPreStep6CookieCleanup,
-    } = deps;
-
-    async function executeStep6() {
-      await runPreStep6CookieCleanup();
-      await completeStepFromBackground(6);
-    }
-
-    return { executeStep6 };
-  }
-
-  return { createStep6Executor };
-});

background/steps/wait-registration-success.js

@@ -0,0 +1,28 @@
+(function attachBackgroundStep6(root, factory) {
+  root.MultiPageBackgroundStep6 = factory();
+})(typeof self !== 'undefined' ? self : globalThis, function createBackgroundStep6Module() {
+  const DEFAULT_REGISTRATION_SUCCESS_WAIT_MS = 20000;
+
+  function createStep6Executor(deps = {}) {
+    const {
+      addLog = async () => {},
+      completeStepFromBackground,
+      registrationSuccessWaitMs = DEFAULT_REGISTRATION_SUCCESS_WAIT_MS,
+      sleepWithStop = async (ms) => new Promise((resolve) => setTimeout(resolve, Math.max(0, Number(ms) || 0))),
+    } = deps;
+
+    async function executeStep6() {
+      const waitMs = Math.max(0, Math.floor(Number(registrationSuccessWaitMs) || 0));
+      if (waitMs > 0) {
+        await addLog(`步骤 6：等待 ${Math.round(waitMs / 1000)} 秒，确认注册成功并让页面稳定...`, 'info');
+        await sleepWithStop(waitMs);
+      }
+      await addLog('步骤 6：注册成功等待完成，准备继续获取 OAuth 链接并登录。', 'ok');
+      await completeStepFromBackground(6);
+    }
+
+    return { executeStep6 };
+  }
+
+  return { createStep6Executor };
+});