Stability checkpoint — bin/cluster/test-all.sh batched cluster validation (MR !180) After bin/cluster/demo/up.sh (GCP) or bin/cluster/ovh/up.sh (OVH) brings a cluster up, this new script bundles 8-10 manual kubectl commands into a single pass with a clear pass/fail table. Layers : cluster (nodes / kube-system / DNS / SC) · app (mirador NS / deployment / endpoints / Postgres STS) · liveness (/actuator/health via port-forward) · observability (prom + grafana, optional). Modes : --json (CI-friendly) · --quick (skip port-forward + obs). Exit code 0/1 wireable into nightly smoke / pre-demo gate.