- ARCHITECTURE §17: the dev (production-mirror) collection stack
(Prometheus / Loki / Tempo / promtail / node-exporter / cAdvisor) and
the single /_gm Basic Auth gate fronting Grafana and the Mailpit UI.
- tools/dev-deploy/monitoring/README.md (new): services, what is
collected, Grafana-behind-the-gate access, config delivery, tuning.
- tools/dev-deploy/README.md: an Observability section; the Mailpit UI
under /_gm/mailpit/; Networking diagram and Files list updated.
- FUNCTIONAL §10.2.1 (+ ru mirror): the operator console nav links to
Grafana and Mailpit under the same /_gm gate, one sign-in for all.
Ilia Denisov