Development record

abcd implement receipt <path> is refused at the state stage when more than one run is in progress, asking for --run, although the receipt path it was given (.abcd/.work.local/run/<run-id>/lane-N/...) already names the run. On 2026-10-10 a drain lane's receipt was refused this way because 24 stale runs from an earlier drain were still in progress; the next the drain itself printed (run `abcd implement receipt <path>`) omitted --run too, so following it verbatim fails.