The seed-key fix made the SESSION scoped, but the delivery leg still
dropped the scope: cron route_metadata carried only job_id (+thread),
DeliveryRouter stamps scope_id only for the configured HOME channel, and
the RelayAdapter's per-chat scope cache is cold after a gateway restart
(learned from inbound only). A scoped Slack origin that is not the home
chat therefore egressed with NO tenant discriminator, and the connector's
fail-closed guard could reject the brief before delivery — the
delivery-leg sibling of the seed-key scope gap.
Copy origin.scope_id into the live text and media routing metadata for
ORIGIN-MATCHING targets only (setdefault — never overrides router/home
stamping). Fan-out/broadcast targets are excluded by the origin gate: a
fan-out target's tenant is not the origin's, and a wrong scope is worse
than none.
Tests: restart-shaped positive (scoped non-home origin -> scope_id on
routed metadata, RED before this fix) and legacy negative (scope-less
origin stamps nothing).
Ben Barclay
4308c453ac