A worktree creator's binding always differs from its --workspace default, so prefix() put DELEGATE_JOB_LOGS_DIR=<control root>/.mam/delegate_job_logs into every such pane for good, and the env-first rule then kept an experiment's --registry-dir from moving its audit log. forwarded_keys() leaves that key out when it equals the sibling of mam_jobs_dir; a non-sibling (explicit) root is forwarded as before. describe(), the forward and whitespace checks and the row's four keys are unchanged. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>