Operator decision 2026-08-15: ktg-plugin-marketplace is a polyrepo
directory, not a git repo, so no session can ever hold that coord
identity naturally. catalog's H4 reply confirmed adoption was declined
and drained the 6 stray messages as a one-time settlement, not an
ongoing subscription. --to now fails loud with a pointer to catalog
instead of silently redirecting mail somewhere the sender doesn't
believe it landed - the same misdelivery defect this closes a second
time (2 messages sat undelivered 2 days on this exact misaddressing).
Only --to is retired; --from is untouched since the defect was mail
arriving there, not mail claiming to originate there.
coord-selftest.sh: 206/206 (+6, section 33).