Reversible Agent Task

Use a proposal-first workflow when direct mutation would make review, rollback, or comparison harder.

Use When

• an agent runner, SET bundle, or planning doc mentions retained output, proposal lifecycle, settlement, or reversible traces;
• the task can be attempted in a worktree, draft branch, sandbox, retained-output folder, or external runner proposal;
• multiple possible implementations should be compared before one is applied;
• the target repo should remain unchanged until a human or supervisor reviews the output.

Lifecycle

1. run: execute the task in a proposal context, such as a worktree, draft branch, sandbox, or retained-output directory.
2. retained_output: keep generated files, diffs, logs, and proof artifacts separate from the target workspace.
3. inspect: review diff scope, verification evidence, assumptions, and expected artifacts.
4. select: mark one retained output as the candidate result.
5. apply: merge or copy the selected proposal into the target workspace only after gates pass.
6. discard: reject the proposal and leave the target workspace unchanged.