fix: 收敛 2925 邮箱修复范围

- 回退非必要的 2925 行为改动，仅保留已验证有效的修复
- 保留 bounce 转发地址解析、中文日期解析与邮箱页复用时的 ready 恢复
- 同步最小化测试断言，保持当前代码与测试一致

background/mail-2925-session.js

@@ -537,6 +537,16 @@
         }
       }
 
+      if (typeof ensureContentScriptReadyOnTab === 'function') {
+        await ensureContentScriptReadyOnTab(MAIL2925_SOURCE, tabId, {
+          inject: MAIL2925_INJECT,
+          injectSource: MAIL2925_INJECT_SOURCE,
+          timeoutMs: 20000,
+          retryDelayMs: 800,
+          logMessage: '步骤 0：2925 登录页内容脚本未就绪，正在等待页面稳定后继续登录...',
+        });
+      }
+
       if (!forceRelogin && !isMail2925LoginUrl(openedUrl) && !normalizedExpectedMailboxEmail) {
         await addLog('2925：当前邮箱页未跳转到登录页，将直接复用已登录会话。', 'info');
         return buildSuccessPayload();
@@ -553,16 +563,6 @@
         });
       }
 
-      if (typeof ensureContentScriptReadyOnTab === 'function') {
-        await ensureContentScriptReadyOnTab(MAIL2925_SOURCE, tabId, {
-          inject: MAIL2925_INJECT,
-          injectSource: MAIL2925_INJECT_SOURCE,
-          timeoutMs: 20000,
-          retryDelayMs: 800,
-          logMessage: '步骤 0：2925 登录页内容脚本未就绪，正在等待页面稳定后继续登录...',
-        });
-      }
-
       if (forceRelogin && typeof sleepWithStop === 'function') {
         await addLog('2925：登录页已打开，等待 3 秒后开始检查输入框并执行登录...', 'info');
         await sleepWithStop(3000);

background/steps/fetch-login-code.js

@@ -69,10 +69,6 @@
     }
 
     function getExpectedMail2925MailboxEmail(state = {}) {
-      if (String(state?.mail2925Mode || '').trim().toLowerCase() === 'receive') {
-        return '';
-      }
-
       if (Boolean(state?.mail2925UseAccountPool)) {
         const currentAccountId = String(state?.currentMail2925AccountId || '').trim();
         const accounts = Array.isArray(state?.mail2925Accounts) ? state.mail2925Accounts : [];

background/steps/fetch-signup-code.js

@@ -26,10 +26,6 @@
     } = deps;
 
     function getExpectedMail2925MailboxEmail(state = {}) {
-      if (String(state?.mail2925Mode || '').trim().toLowerCase() === 'receive') {
-        return '';
-      }
-
       if (Boolean(state?.mail2925UseAccountPool)) {
         const currentAccountId = String(state?.currentMail2925AccountId || '').trim();
         const accounts = Array.isArray(state?.mail2925Accounts) ? state.mail2925Accounts : [];

background/verification-flow.js

@@ -214,7 +214,8 @@
 
     function getVerificationPollPayload(step, state, overrides = {}) {
       const is2925Provider = state?.mailProvider === '2925';
-      const mail2925MatchTargetEmail = is2925Provider;
+      const mail2925MatchTargetEmail = is2925Provider
+        && String(state?.mail2925Mode || '').trim().toLowerCase() === 'receive';
       if (step === 4) {
         return {
           filterAfterTimestamp: is2925Provider ? 0 : getHotmailVerificationRequestTimestamp(4, state),