Development record

2026-09-30 — Rulings DR6b and DR6c (the product thinker, 2026-09-30, relayed by the orchestrator of autonomous run A) close the two questions the DR6 spec review left open in spc-2609202134341288 and are recorded as decision 8 of itd-2609201925079472 (lane dr6Spec, amend round 3; records only, nothing built). DR6b, verbatim: "(a) ONE AFTER ANOTHER BY DEFAULT: a step runs alongside earlier ones only if its plan says so; nothing already planned changes; reviews run side by side; the 2026-09-21 wording stands." A step without a `- needs:` line needs every earlier step, so itd-2609212103565953's wording of 2026-09-21 stands. DR6c, verbatim: "(c) FINISH, BUT HOLD THEM: when one piece is handed back, pieces in flight finish but nothing merges until the person re-plans; the person then decides whether the held pieces land as they are." After a hand-back the sibling lanes run to completion and each passing one takes the lane stage `held` (before its push, or before arming once pushed; an armed one is disarmed), recorded in `lanes[].hold` and shown by `implement status`; the person releases or discards each with `implement step --release <lane>` or `--discard <lane>` (the claim verb `implement release` is a different noun and is not reused). Tested by the spec's criterion C13.