Add kanban routing keys (provider_quota_min_remaining_percent: 15,
provider_capacity_cooldown_seconds: 300, provider_auth_cooldown_seconds:
3600), a lane-metrics port/Service on 9011 with service-annotation
scraping, monitoring ingress for the new port, and the lane's quota
metrics URL env. Based on PR #15 (fix/hermes-result-decomposition-
reliability); stacked because this work rides on the decomposed lane.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
