docs(grpc): Phase 5 live gate — PASS (8/8), migration complete
Full eight-check gate on the Phase 4 deletion build (main @ 7fd5cb2b),
rig rebuilt from main. All 8 checks PASS: PSK negatives; site->central
matrix (notif no-loss/dupe, both audit paths, reconcile self-heal);
central->site matrix (Query/Parked/Lifecycle); active-central kill ->
sticky flip 1s + central-b active 26s; mid-drain total==distinct;
297,574-byte gRPC reply (128KB frame-class retired); cluster membership
pair-only (no cross-boundary Akka association); full-rig restart 0
receptionist/ClusterClient lines on any of 8 nodes.
Check-1 clarification recorded: site-side interceptor uses the node's
single GrpcPsk and ignores x-scadabridge-site (a central-side routing
hint) -- per-site isolation proven by wrong-key reject. Instance-
dependent central->site RPCs (OpcUa/Route/standby-parked/TriggerFailover)
carried forward, unit-proven.
Joseph Doherty
9f91e84d83