Re-running abcd reserve <id> --footprint X on an id already held replaces the held footprint with X instead of adding X to it, so extending a reservation path by path silently drops the earlier paths and leaves them open to peers. Two sessions met it on 27-28 Oct and had to re-reserve with the full list in one call.

Re-running abcd reserve <id> --footprint X on an id already held replaces the held footprint with X instead of adding X to it, so extending a reservation path by path silently drops the earlier paths and leaves them open to peers. Two sessions met it on 27-28 Oct and had to re-reserve with the full list in one call.

2026-11-02: AGENTS.md's Concurrent sessions rule says to reserve "once per path the work will change", which reads as one call per path; each call replaced the last footprint (the verb warns so), and the reservation had to be made again with every --footprint in one call.