* HH-445: deploy production observability and runbooks * fix(ops): share production database DSN * fix(HH-445): enforce database TLS gate * fix(HH-445): preserve production serve command * fix(prod): require external database dependencies * fix(prod): unify database host rejection gates * test(prod): enforce exact database TLS runbook contract --------- Co-authored-by: Rogee <rogee@ipao.vip>