Cursor 3 adds /multitask for parallel async sub-agents

Cursor 3 上线了 /multitask 功能，支持同时跑多个异步子智能体（sub-agent），不用再排队等前一个任务做完才开始下一个。已经在排队中的任务也可以随时切换成并行模式。 https://t.co/cXbpGArRvv

Cursor 3 added /multitask and lets async sub-agents run in parallel. Queued tasks can also switch to parallel mode without waiting for the previous task to finish. The post does not disclose concurrency limits, resource usage, or failure rollback.