[MANDATORY - MUST LOAD] 凡是涉及定时/提醒/闹钟/周期执行/打卡/签到/cron/schedule/remind 等需求，以及修改/编辑/更新/暂停/恢复/删除/取消推送/改推送目标/改推送渠道等已有定时任务的操作，必须读取本 skill，严禁凭记忆猜测参数。
- Initial release of `qclaw-cron-skill`. - Implements strict, mandatory rules for handling all scheduled task and reminder requests. - Defines detailed workflows for determining delivery targets, distinguishing between local and external channels, and selecting the correct execution method (tool or CLI). - Enforces explicit parameter passing for agentId, delivery mode, and push targets to avoid delivery failures. - Includes comprehensive quick-reference tables and templates for standard cron, one-off, and recurring tasks. - Provides robust rules for creation, editing, pausing, resuming, and deleting scheduled jobs, with clear instructions for proper cancellation and delivery updates.