fix: harden 2925 mailbox reuse and forwarded mail parsing

- 合并 PR #169 的核心改动：在复用 2925 邮箱页前恢复 content script ready，并支持 OpenAI bounce 转发地址反解与中文日期解析。
- 本地补充修复：无。
- 影响范围：2925 邮箱会话确认、2925 邮件轮询、相关回归测试。

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);

content/mail-2925.js

@@ -699,10 +699,29 @@ function extractEmails(text = '') {
   return [...new Set(matches.map((item) => item.toLowerCase()))];
 }
 
+function extractForwardedTargetEmails(text = '') {
+  const normalizedText = String(text || '').toLowerCase();
+  const matches = normalizedText.match(/bounce\+[a-z0-9._%+-]*-([a-z0-9._%+-]+)=([a-z0-9.-]+\.[a-z]{2,})@(?:tm\d*\.openai\.com|em\d+\.tm\.openai\.com)/gi) || [];
+  const decoded = matches
+    .map((candidate) => {
+      const match = String(candidate || '').match(/bounce\+[a-z0-9._%+-]*-([a-z0-9._%+-]+)=([a-z0-9.-]+\.[a-z]{2,})@/i);
+      if (!match) {
+        return '';
+      }
+      return `${match[1].toLowerCase()}@${match[2].toLowerCase()}`;
+    })
+    .filter(Boolean);
+  return [...new Set(decoded)];
+}
+
 function emailMatchesTarget(candidate, targetEmail) {
   const normalizedCandidate = String(candidate || '').trim().toLowerCase();
   const normalizedTarget = String(targetEmail || '').trim().toLowerCase();
-  return Boolean(normalizedCandidate && normalizedTarget && normalizedCandidate === normalizedTarget);
+  if (!normalizedCandidate || !normalizedTarget) {
+    return false;
+  }
+
+  return normalizedCandidate === normalizedTarget;
 }
 
 function getTargetEmailMatchState(text, targetEmail) {
@@ -717,12 +736,30 @@ function getTargetEmailMatchState(text, targetEmail) {
   }
 
   const extractedEmails = extractEmails(normalizedText);
+  const forwardedTargetEmails = extractForwardedTargetEmails(normalizedText);
   if (!extractedEmails.length) {
+    return forwardedTargetEmails.length
+      ? {
+        matches: forwardedTargetEmails.some((candidate) => emailMatchesTarget(candidate, normalizedTarget)),
+        hasExplicitEmail: true,
+      }
+      : { matches: true, hasExplicitEmail: false };
+  }
+
+  const targetDomain = normalizedTarget.includes('@')
+    ? normalizedTarget.split('@').pop()
+    : '';
+  const comparableEmails = [...new Set(
+    (targetDomain
+      ? [...extractedEmails, ...forwardedTargetEmails].filter((candidate) => String(candidate || '').trim().toLowerCase().endsWith(`@${targetDomain}`))
+      : [...extractedEmails, ...forwardedTargetEmails])
+  )];
+  if (!comparableEmails.length) {
     return { matches: true, hasExplicitEmail: false };
   }
 
   return {
-    matches: extractedEmails.some((candidate) => emailMatchesTarget(candidate, normalizedTarget)),
+    matches: comparableEmails.some((candidate) => emailMatchesTarget(candidate, normalizedTarget)),
     hasExplicitEmail: true,
   };
 }
@@ -782,6 +819,17 @@ function parseMailItemTimestamp(item) {
     return date.getTime();
   }
 
+  match = timeText.match(/(\d{1,2})月(\d{1,2})日(?:\s*(\d{1,2}):(\d{2}))?/);
+  if (match) {
+    date.setMonth(Number(match[1]) - 1, Number(match[2]));
+    if (match[3] && match[4]) {
+      date.setHours(Number(match[3]), Number(match[4]), 0, 0);
+    } else {
+      date.setHours(0, 0, 0, 0);
+    }
+    return date.getTime();
+  }
+
   match = timeText.match(/(\d{4})-(\d{1,2})-(\d{1,2})\s*(\d{1,2}):(\d{2})/);
   if (match) {
     return new Date(

tests/background-mail2925-entry-behavior.test.js

@@ -68,7 +68,7 @@ test('ensureMail2925MailboxSession reuses current mailbox page without sending l
   });
 
   assert.equal(sendCalls, 0);
-  assert.equal(readyCalls, 0);
+  assert.equal(readyCalls, 1);
   assert.equal(result.result.usedExistingSession, true);
 });
 

tests/mail-2925-content.test.js

@@ -319,6 +319,7 @@ return {
 test('handlePollEmail skips explicit mismatched target emails when receive-mode matching is enabled', async () => {
   const bundle = [
     extractFunction('extractEmails'),
+    extractFunction('extractForwardedTargetEmails'),
     extractFunction('emailMatchesTarget'),
     extractFunction('getTargetEmailMatchState'),
     extractFunction('normalizeMinuteTimestamp'),