fix(multiplayer): converge events through REST

server/api/outbox.go

@@ -13,8 +13,10 @@ import (
 // RunProposalOutboxDispatcher delivers committed proposal changes to the
 // authenticated WebSocket subscribers. It only reads proposal_changed rows;
 // result and other outbox event types remain owned by their own consumers.
-// Delivery is at-least-once because the row is acknowledged only after every
-// participant publication succeeds.
+// The outbox guarantees after-commit publication into this replica's bounded
+// transient hub; WebSocket receipt is deliberately best-effort. Clients use
+// owner-scoped periodic REST recovery for correctness across disconnects and
+// replicas, so a socket notification is only a latency optimization.
 func RunProposalOutboxDispatcher(ctx context.Context, db *sql.DB, service *Service) {
 	if db == nil || service == nil {
 		return