OrderFlow v0.1.0

Initial public release of OrderFlow, a full-stack event-driven commerce platform focused on reliable order processing.

Highlights:

• Transactional outbox with retry and dead-letter handling
• Idempotent requests and event consumers
• Atomic inventory reservation and compensation workflows
• Spring Boot, Kafka-compatible Redpanda, PostgreSQL, Redis, and React
• Prometheus/Grafana observability and correlation IDs
• Backend, frontend, and full-topology CI verification