Root cause: some F customer records carry our own/staff addresses in email_billing,
so matchCustomer's `email_billing LIKE '%addr%'` resolved support@targo.ca -> "Guylaine
Gagnon" and gilles@targointernet.com -> "Sylvie Juteau". Every thread on one of our
addresses then inherited that wrong customer + name.
- OWN_DOMAINS promoted to a single source in lib/helpers.js (was duplicated in
conversation.js); inbox-triage.matchCustomer() now returns null for any own-domain
address — a customer is never reachable at targo.ca / targointernet.com / gigafibre.ca.
- conversation.js consumes the shared OWN_DOMAINS (removes the local copy).
Also ran a one-shot repair (temporary endpoint, since removed) that unlinked the 6
already-contaminated threads and reset their display name to the real address.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
9466645e17