feat: show email subject and sender in all status messages

main.py

@@ -7,7 +7,7 @@ import threading
 import time
 from concurrent.futures import ThreadPoolExecutor
 from src.config import load_config
-from src.summarizer import poll_accounts, ai_process, tg_send_and_mark
+from src.summarizer import poll_accounts, ai_process, tg_send_and_mark, _mail_label
 from src.tg_bot import poll_telegram, send_thinking
 from src.database import init_db, is_uid_processed, mark_fetched, mark_processing, mark_sent, mark_failed
 
@@ -56,7 +56,8 @@ def _email_poller(cfg):
                     mark_fetched(uid_str, mail.account_email, mail.folder,
                                  mail.subject, mail.sender)
                     try:
-                        tg_msg_id = send_thinking(cfg.telegram, cfg.telegram.chat_id, "📥 获取邮件中…")
+                        tg_msg_id = send_thinking(cfg.telegram, cfg.telegram.chat_id,
+                            f"📥 *获取邮件中…*\n{_mail_label(mail)}")
                     except Exception:
                         tg_msg_id = 0
                     _email_queue.put((acct_idx, mail, tg_msg_id))