feat: 增强注册方法管理，支持动态解析步骤标题及相关测试

tests/background-signup-method-settings.test.js

@@ -95,3 +95,43 @@ return {
   assert.equal(api.logs.some((entry) => /固定为邮箱注册/.test(entry.message)), true);
 });
 
+test('background step definitions resolve titles from the frozen signup method', () => {
+  const api = new Function(`
+const captured = [];
+const self = {
+  MultiPageStepDefinitions: {
+    getSteps(options) {
+      captured.push(options);
+      return [{
+        id: 2,
+        key: 'submit-signup-email',
+        title: options.signupMethod === 'phone' ? '注册并输入手机号' : '注册并输入邮箱',
+      }];
+    },
+  },
+};
+${extractFunction('isPlusModeState')}
+${extractFunction('normalizePlusPaymentMethod')}
+${extractFunction('normalizeSignupMethod')}
+${extractFunction('getSignupMethodForStepDefinitions')}
+${extractFunction('getStepDefinitionsForState')}
+return {
+  getCaptured: () => captured.slice(),
+  getStepDefinitionsForState,
+};
+`)();
+
+  const steps = api.getStepDefinitionsForState({
+    plusModeEnabled: true,
+    plusPaymentMethod: 'gopay',
+    signupMethod: 'email',
+    resolvedSignupMethod: 'phone',
+  });
+
+  assert.deepEqual(api.getCaptured(), [{
+    plusModeEnabled: true,
+    plusPaymentMethod: 'gopay',
+    signupMethod: 'phone',
+  }]);
+  assert.equal(steps[0].title, '注册并输入手机号');
+});

tests/sidepanel-plus-payment-method.test.js

@@ -34,6 +34,7 @@ function extractFunction(name) {
 
 test('sidepanel step definitions keep the selected Plus payment method', () => {
   const bundle = [
+    extractFunction('normalizeSignupMethod'),
     extractFunction('normalizePlusPaymentMethod'),
     extractFunction('getStepDefinitionsForMode'),
     extractFunction('rebuildStepDefinitionState'),
@@ -52,6 +53,8 @@ const window = {
 };
 let currentPlusModeEnabled = false;
 let currentPlusPaymentMethod = 'paypal';
+let currentSignupMethod = 'email';
+const DEFAULT_SIGNUP_METHOD = 'email';
 let stepDefinitions = [];
 let STEP_IDS = [];
 let STEP_DEFAULT_STATUSES = {};
@@ -74,11 +77,28 @@ return {
   assert.deepEqual(api.getStepIds(), [7]);
   assert.deepEqual(api.calls[0], {
     type: 'getSteps',
-    options: { plusModeEnabled: true, plusPaymentMethod: 'gopay' },
+    options: { plusModeEnabled: true, plusPaymentMethod: 'gopay', signupMethod: 'email' },
   });
   assert.deepEqual(api.calls[1], { type: 'render', stepIds: [7] });
 });
 
+test('sidepanel normalizeSignupMethod stays independent from signup constants during bootstrap', () => {
+  const source = extractFunction('normalizeSignupMethod');
+  assert.doesNotMatch(source, /SIGNUP_METHOD_(PHONE|EMAIL)/);
+});
+
+test('sidepanel signup method UI syncs shared step definitions with the selected signup method', () => {
+  const source = extractFunction('updateSignupMethodUI');
+  assert.match(source, /syncStepDefinitionsForMode\(/);
+  assert.match(source, /signupMethod:\s*selectedMethod/);
+});
+
+test('sidepanel applies restored signup method when rebuilding shared step definitions on load', () => {
+  const source = extractFunction('applySettingsState');
+  assert.match(source, /syncStepDefinitionsForMode\(Boolean\(state\?\.plusModeEnabled\),\s*\{/);
+  assert.match(source, /signupMethod:\s*state\?\.signupMethod/);
+});
+
 test('sidepanel Plus UI hides PayPal account selector while GoPay is selected', () => {
   const bundle = [
     extractFunction('normalizePlusPaymentMethod'),

tests/step-definitions-module.test.js

@@ -8,7 +8,9 @@ test('step definitions module exposes ordered normal and Plus step metadata', ()
 
   const api = new Function('self', `${source}; return self.MultiPageStepDefinitions;`)(globalScope);
   const steps = api.getSteps();
+  const phoneSteps = api.getSteps({ signupMethod: 'phone' });
   const plusSteps = api.getSteps({ plusModeEnabled: true });
+  const plusPhoneSteps = api.getSteps({ plusModeEnabled: true, signupMethod: 'phone' });
   const goPaySteps = api.getSteps({ plusModeEnabled: true, plusPaymentMethod: 'gopay' });
 
   assert.equal(Array.isArray(steps), true);
@@ -34,6 +36,8 @@ test('step definitions module exposes ordered normal and Plus step metadata', ()
   );
   assert.equal(steps[0].title, '打开 ChatGPT 官网');
   assert.equal(steps[5].title, '清理登录 Cookies');
+  assert.equal(phoneSteps[1].title, '注册并输入手机号');
+  assert.equal(phoneSteps[3].title, '获取手机验证码');
 
   assert.deepStrictEqual(
     plusSteps.map((step) => step.key),
@@ -56,6 +60,8 @@ test('step definitions module exposes ordered normal and Plus step metadata', ()
   assert.equal(plusSteps.some((step) => step.key === 'clear-login-cookies'), false);
   assert.equal(plusSteps.some((step) => step.key === 'fetch-login-code'), true);
   assert.equal(plusSteps.find((step) => step.key === 'paypal-approve')?.title, 'PayPal 登录与授权');
+  assert.equal(plusPhoneSteps[1].title, '注册并输入手机号');
+  assert.equal(plusPhoneSteps[3].title, '获取手机验证码');
   assert.equal(goPaySteps.some((step) => step.key === 'paypal-approve'), false);
   assert.equal(api.getStepById(8, { plusModeEnabled: true, plusPaymentMethod: 'gopay' }), null);
   assert.equal(api.getPlusPaymentStepTitle({ plusModeEnabled: true, plusPaymentMethod: 'gopay' }), '');