[codex] Document Grafana and OpenTelemetry on Control Plane

CHANGELOG.md

@@ -15,6 +15,7 @@ In addition to the standard keepachangelog.com categories, this project uses a l
 ### Added
 
 - **Added generic telemetry documentation for deploying an OpenTelemetry Collector with Control Plane Flow**, including collector workload templates, application instrumentation, telemetry pipelines, review-app isolation, and troubleshooting guidance. [PR 369](https://github.com/shakacode/control-plane-flow/pull/369) by [Justin Gordon](https://github.com/justin808).
+- **Added a Rails-focused Grafana and OpenTelemetry guide for building Control Plane dashboards from generated span and log metrics**, including collector workload guidance, spanmetrics setup, rollout order, alerting, and validation checklists. [PR 352](https://github.com/shakacode/control-plane-flow/pull/352) by [Justin Gordon](https://github.com/justin808).
 
 ## [5.1.1] - 2026-06-03
 

README.md

@@ -71,6 +71,7 @@ Additionally, the documentation includes numerous examples and practical tips fo
 16. [Migrating Redis Database from Heroku Infrastructure](https://www.shakacode.com/control-plane-flow/docs/redis/)
 17. [Tips](https://www.shakacode.com/control-plane-flow/docs/tips/)
 18. [Thruster HTTP/2 Proxy on Control Plane](https://www.shakacode.com/control-plane-flow/docs/thruster/)
+19. [Grafana and OpenTelemetry on Control Plane](https://www.shakacode.com/control-plane-flow/docs/grafana-opentelemetry/)
 
 ## Key Features