Alerting + outbound controllers resolve acting user via
authentication.name with 'user:' prefix stripped → 'admin'. But
UserRepository.upsert stores env-admin as 'user:admin' (JWT sub format).
The resulting FK mismatch manifests as 500 'alert_rules_created_by_fkey'
on any create operation in a fresh docker stack.
Workaround: run-once 'cameleer-seed' compose service runs psql against
deploy/docker/postgres-init.sql after the server is healthy (i.e. after
Flyway migrations have created tenant_default.users), inserting
user_id='admin' idempotently. The root-cause fix belongs in the backend
(either stop stripping the prefix in alerting/outbound controllers, or
normalise storage to the unprefixed form) and is out of scope for
Plan 03.
d88bede097