- Re-add the parameter removed in the original PR
- Non-admin users can only send to their own session (current_session)
- Admin users can send to any session via the param
- Uses from computer_tools.util (same pattern as fs.py)
- Ref: https://github.com/AstrBotDevs/AstrBot/issues/7822
Co-authored-by: Soulter <soulter@astrbot.app>