[Feature Request] Clarify /clear command behavior with running background agents in documentation

Bug Description
claude:"The honest caveat: I don't know for certain whether /clear stops a running background agent mid-flight. If it does, the file never gets written. So either wait the few minutes, or clear and re-fire it — everything it reads is committed now, so the brief is fully reproducible from a cold session." ---> claude should probably be trained to know that

Environment Info

• Platform: linux
• Terminal: tmux
• Version: 2.1.269
• Feedback ID: 90bd81f8-0e81-4bfb-ac30-18252f64285f

Errors

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