The 2026-09-17 false-verdict incident (third recurrence) showed that prose
policy is not a control: the agent probed :9325/:9405 (nonexistent ports),
CT 116 for PVE API (should be real PVE nodes), and rendered TLS failures as
connection-refused. This moves the canonical probe set into
scripts/infra-monitoring.sh (executed verbatim by the contract) and adds
scripts/test_infra_monitoring.sh which asserts every probed port matches the
documented value.
- scripts/infra-monitoring.sh: one script per contract pattern; all targets,
ports, paths, and expected-status rules in code; -k for PVE self-signed
certs; non-zero exit naming every failed target; no OK summary on failure
- scripts/test_infra_monitoring.sh: 20 assertions covering port drift,
monitoring-host-as-PVE-node, and missing -k flag
- infrastructure-monitoring.prose.md: check-health section now references the
script as executable owner; paste its raw output verbatim
Proof: all 13 legs pass (exit 0); deliberately broken Grafana port (9325)
produces 'probe-failed: 192.168.68.116:9325 (expected 200)' and exit 1.
