diff --git a/backend/deploy/cron.d/code-bang b/backend/deploy/cron.d/code-bang
new file mode 100644
index 0000000..0a7d985
--- /dev/null
+++ b/backend/deploy/cron.d/code-bang
@@ -0,0 +1,17 @@
+# code-bang 定时任务  ->  /etc/cron.d/code-bang
+# 放置后 cron 自动加载，无需执行任何脚本。修改 APP_ROOT / PHP 两处路径即可。
+SHELL=/bin/bash
+PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+MAILTO=""
+
+APP_ROOT=/var/www/code-bang/backend
+PHP=/usr/local/bin/php
+
+# 投标开标 + 中标后超时未确认弃权（超时配置为 300 秒级，故每分钟执行）
+* * * * * nginx cd ${APP_ROOT} && flock -n /tmp/cb-bidding.lock ${PHP} think bidding:deal >> ${APP_ROOT}/runtime/cron/bidding-deal-$(date +\%Y\%m).log 2>&1
+
+# 确认收货超时（7 天自动收货）+ 订单收益解冻
+*/10 * * * * nginx cd ${APP_ROOT} && flock -n /tmp/cb-demand.lock ${PHP} think demand:deal >> ${APP_ROOT}/runtime/cron/demand-deal-$(date +\%Y\%m).log 2>&1
+
+# 群聊二维码拉取更新（每日凌晨执行）
+0 3 * * * nginx cd ${APP_ROOT} && flock -n /tmp/cb-groupchat.lock ${PHP} think groupChat:fetch >> ${APP_ROOT}/runtime/cron/groupchat-fetch-$(date +\%Y\%m).log 2>&1