Sub-ticket of VENUS-26 feat(monitoring): venus LEG-1 — instant critical-error email on uncaught 500 (instrumentation.ts onRequestError -> direct in-process SMTP, DB-independent, in-memory 1/route/10min throttle, never-throw + native sendOutboundEmail outbox fallback; recipient=env WORK email). Per frozen fleet error-alerting standard bs-mqn8ogqjpze/bs-mqn8vka8iky. · venus