milestone: enforce required services and add mongo logger PoC path

wiki/10-modernization-roadmap.md

@@ -48,6 +48,10 @@ Immediate objective:
 
 Guardrails are intentionally deferred until POC behavior is stable.
 
+Implementation status update:
+- Phase A transport stability evidence exists: live RabbitMQ round-trip tests for `rec.read` and `rec.write` ping paths.
+- Phase B has started: REC template registry loading and startup validation are now implemented in IPL.
+
 ## Must-Keep Invariants
 
 1. AMQP-first data path for application operations.