feat: Add a thread-safe account store module for managing accounts and recording statistics, and integrate it into the bot.

core/account_store.py

@@ -180,6 +180,38 @@ def delete_by_email(email: str) -> dict | None:
         return removed
 
 
+def delete_by_emails(emails: list[str]) -> int:
+    """批量按邮箱删除账号，返回实际删除数量"""
+    if not emails:
+        return 0
+
+    email_set = set(emails)
+    with _lock:
+        try:
+            with open(_ACCOUNTS_FILE, "r", encoding="utf-8") as f:
+                lines = [line.strip() for line in f if line.strip()]
+        except FileNotFoundError:
+            return 0
+
+        remaining = []
+        deleted = 0
+        for line in lines:
+            parts = line.split("|")
+            if parts[0] in email_set:
+                deleted += 1
+                # 同时从 busy 集合中移除
+                _busy.discard(line)
+            else:
+                remaining.append(line)
+
+        if deleted > 0:
+            with open(_ACCOUNTS_FILE, "w", encoding="utf-8") as f:
+                for line in remaining:
+                    f.write(line + "\n")
+
+        return deleted
+
+
 # ====== 统计数据 ======
 
 def _load_stats() -> dict: