fix: skip NoSelect folders, clean up debug logging

src/email_client.py

@@ -113,9 +113,8 @@ def fetch_unseen_emails(account: EmailAccount, skip_uids: set[bytes] | None = No
     conn = _login_and_prepare(account, select_inbox=False)
     if skip_uids is None:
         skip_uids = set()
-    logger.info("fetch_unseen_emails: %s, skip_uids大小=%d", account.username, len(skip_uids))
 
-    # 列出所有文件夹
+    # 列出所有文件夹，跳过 NoSelect 文件夹
     _, folder_data = conn.list()
     folders = []
     if folder_data:
@@ -123,6 +122,9 @@ def fetch_unseen_emails(account: EmailAccount, skip_uids: set[bytes] | None = No
             if item is None:
                 continue
             line = item.decode("utf-8", errors="replace")
+            # 跳过 \NoSelect 文件夹（父文件夹，不能直接 SELECT）
+            if "\\NoSelect" in line:
+                continue
             m = re.search(r'"([^"]*)"\s*$', line)
             if m:
                 folders.append(m.group(1))
@@ -148,11 +150,7 @@ def fetch_unseen_emails(account: EmailAccount, skip_uids: set[bytes] | None = No
             skipped += len(uids) - len(new_uids)
             if not new_uids:
                 continue
-            if skipped > 0 or len(uids) > 0:
-                logger.info("  %s: %d 封未读 (%d 封跳过) skip_uids=%d",
-                            folder, len(new_uids), len(uids) - len(new_uids), len(skip_uids))
-                if skip_uids and len(skip_uids) <= 5:
-                    logger.info("    skip_uids 内容: %s", [u for u in skip_uids])
+            logger.info("  %s: %d 封未读 (%d 封跳过)", folder, len(new_uids), len(uids) - len(new_uids))
 
             for uid in new_uids:
                 try: