The distributed worker pool stacks on exactly two open pull requests, in this
order: PR 14 supplies the broker-only SCM boundary the mediators route through
and the hermes-scm-boundary-v2 ConfigMap they mount, and PR 15 supplies the
cli_lane_* decomposition -- including canonical_run_id and the eligibility
predicate on claim_ready -- that the coordinator depends on. Neither can be
dropped without breaking a fixed P0 boundary, so both are carried here as
prerequisites and this branch must not merge before them.
PR 16 (agent image release lane) and PR 19 (full-handoff acceptance harness)
are NOT prerequisites and are deliberately absent, so reviewing this branch no
longer means approving them.
PR 14 and PR 15 conflict with each other in nine paths. Each is resolved to the
resolution already reviewed on this branch at 4d4cf1bd.
