Verifiable autonomy
A feature_list state machine driven by an objective verify gate — only a captured exit 0 (plus a rubric pass) marks a feature done — with an HMAC hash-chained ledger you can audit and a journal you can replay.
The harness is executable, "done" is a machine-enforced gate, memory is agent-curated but inspectable, and every hands-off run leaves a signed, replayable receipt.