dashboard-create-service-overview

Instruction

Could we add a Grafana dashboard titled exactly "Service Overview" - the saved dashboard resource that appears in dashboard search, not only a folder - with request rate, error rate, and p95 latency in one place so on-call can skim health at a glance? Please also add a service dropdown for the backend jobs that emit request metrics here, make the saved metric queries follow that selection, and make the saved dropdown work for one service, many services, or All without editing the panels again. Also include a Loki panel for recent 5xx request logs for the selected service slice, plus a deployment-events annotation from logs so rollout markers for order-service and payment-service appear on the graphs with version text. Add a saved stat panel titled exactly "Peak Retry Backlog" too, so on-call can see the selected service's peak retry pile-up over the current dashboard time range.