Loki and Promtail — DEPRECATED

Removed in Wave 1 (2026-04-25). The Loki/Promtail stack was retired alongside Prometheus + Grafana per ADR-002. Local probe found zero committed dashboards, zero data sources, and zero LogQL queries — the stack was a "shell that looks like observability without providing any."

Replacement workflow

For container logs in any environment use the existing Make targets:

Target	What it tails
make dev-logs	Local dev stack
make qual-logs	Qualification (via SSH)
make prod-logs	Production (via SSH)
make remote-docker-logs	Direct docker logs over SSH for any single container

Container JSON-log retention is now bounded via Docker log-opts (max-size: 10m, max-file: 5) on the compose defaults — see infrastructure/compose/shared.yml.

If a Loki re-introduction is later warranted (real LogQL workflows + committed dashboards in git), revisit ADR-002's "Negative consequences" note on the 7-day retention gap and design accordingly. Grafana Cloud's free tier is the recommended reintroduction path.