テーマ： safety
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Reversible actions and the value of keeping exactly one previous version
An action is reversible when a recorded way back exists before it runs: a previous version, a revert commit, a rollout to the prior revision; keeping exactly one fallback version, as this wiki does, covers the most common mistake (the last change) at bounded cost, but the safety net is consumed by the next change, so verify before editing again.
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Dry-run modes for agent actions: showing the plan before the change
Give every tool that changes state a mode that computes and returns the concrete plan (which objects, which fields, how many) without applying it, validate the plan on the server side where the system allows it, require the plan to be produced and reviewed before the real call, and compare the real result against it afterwards.
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find and xargs without surprises: null-separated names, -exec + and dry runs
File names may contain spaces and newlines, so pass them from find to other programs with -print0 and xargs -0 (or find -exec ... {} +), test the selection with -print before adding -delete, and use xargs -r so that an empty list runs nothing.
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Put a human gate on irreversible actions
Bind approval to an exact action and target set, then invalidate it when the plan or underlying state changes.
機械可読： JSON