cad-undolisted

<objective> Undo a phase's work by reverting its commits, using the phase SUMMARY.md as the manifest of exactly which hashes to touch (cad-execute records commits-per-task with hashes there). Safe by construction: never runs on a dirty tree, never guesses. No heuristic dependency-check - instead cad-undo states plainly whether later phases exist and lets the user decide. </objective> <execution_context> @${CLAUDE_PLUGIN_ROOT}/cadence-core/workflows/undo.md @${CLAUDE_PLUGIN_ROOT}/cadence-core/references/git-guard.md </execution_context> <process> Run the undo workflow end-to-end. Refuse on a dirty tree. Show the exact hashes and get confirmation before reverting. Reset the phase's status as part of the rollback (this is the one legitimate exception to cad-verify owning status). </process>