Pairs with c94ab01c6 which added the real /metrics endpoint. Without a
scrape job the policy_decisions_total counter has nowhere to go and
the soak period is flying blind.
30s interval to match mana-ai. Same job shape as mana-ai — any Grafana
dashboard that auto-discovers services via labels will pick this up.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>