fix: stats loader and smtp daily reset

email_service.py

@@ -304,6 +304,15 @@ def get_smtp_configs(include_password: bool = False) -> List[Dict[str, Any]]:
     """获取所有SMTP配置列表"""
     with db_pool.get_db() as conn:
         cursor = conn.cursor()
+        # 确保每天的配额在日期切换后能及时重置（即使当天没有触发邮件发送）
+        today = get_beijing_today()
+        cursor.execute("""
+            UPDATE smtp_configs
+            SET daily_sent = 0, daily_reset_date = ?
+            WHERE daily_reset_date != ? OR daily_reset_date IS NULL OR daily_reset_date = ''
+        """, (today, today))
+        conn.commit()
+
         cursor.execute("""
             SELECT id, name, enabled, is_primary, priority, host, port,
                    username, password, use_ssl, use_tls, sender_name, sender_email,
@@ -355,6 +364,14 @@ def get_smtp_config(config_id: int, include_password: bool = False) -> Optional[
     """获取单个SMTP配置"""
     with db_pool.get_db() as conn:
         cursor = conn.cursor()
+        today = get_beijing_today()
+        cursor.execute("""
+            UPDATE smtp_configs
+            SET daily_sent = 0, daily_reset_date = ?
+            WHERE daily_reset_date != ? OR daily_reset_date IS NULL OR daily_reset_date = ''
+        """, (today, today))
+        conn.commit()
+
         cursor.execute("""
             SELECT id, name, enabled, is_primary, priority, host, port,
                    username, password, use_ssl, use_tls, sender_name, sender_email,