new: nightbase mig

AGENT.md

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+# Sysadmin Sessions
+
+## The Purpose
+This repository is created to achieve stable system management and avoid mistakes systematically.
+
+## Guideline
+1. Review the scripts in a given folder, and append to REVIEW.md
+2. Do not assess any styles or add QoL recommendation.
+3. Keep the review as short as possible.
+4. Aim roughly to prevent critical `rm -rf`. This is not a vitamin, but a painkiller.
+5. Keep REVIEW.md, and detect fixes. So you can append REVIEW.md with fixes and changes.