Add an "end of session" hook that can run a process/skill

Describe the feature or problem you'd like to solve

Need a way to auto run a process or skill at the end of a session pre /clear command

Proposed solution

Benefit it if you want to use the hook to run a standard list of tasks at the end of a session i.e. to capture what was done in the session. Today this is manually kicked off prior to running the /clear command

Example prompts or workflows

No response

Additional context

No response

首先跟踪 /clear 命令以及现有的 hook 或 skill 执行入口。定义会话结束 hook 所需的行为，使其在 /clear 之前运行并能够调用进程或 skill；当配置的工作流在该时点自动运行时，即视为完成。