Real-World Business Scenario — Change Data Capture Pipeline with Observability

[alexcreasy]

• KafkaConnect + Debezium scenario - CDC (Change Data Capture) pipeline that captures database changes and streams them through Kafka topics, demonstrating a concrete business use case (e.g., PostgreSQL → Kafka → downstream consumer)
• Observability stack - Prometheus scraping Kafka/Connect/MirrorMaker metrics + pre-built Grafana dashboards showing broker health, consumer lag, connector status, and replication throughput
• All managed via GitOps — connector configurations, dashboard definitions, and alerting rules stored in Git and reconciled by ArgoCD
  Builds on Deliverable 1's foundation (operators, app-of-apps pattern, Kustomize structure)