Name the seat mesh-placement where the kept declaration's retirement reads the placement, as L2 moved it (issue 774, ADR 0567)

cmd/mesh-host/nodeagent.go

@@ -452,7 +452,7 @@ func nodeAgent(ctx context.Context, opts options, signer ed25519.PublicKey, trus
 			return
 		}
 		var ag *agent.Agent
-		// The kept release-5 declaration is no longer read once every module the catalogue places here has a have of its
+		// The kept release-5 declaration is no longer read once every module the seat's placement puts here has a have of its
 		// own (ADR 0550 §2: its signature is the controller's, trusted no more after the lease write).
 		if retired, why := placedAllHave(linked, session, node); retired && !keptRetired.Swap(true) {
 			say("the kept declaration is no longer read: " + why)
@@ -742,7 +742,7 @@ func busyModules() []string {
 	return out
 }
 
-// keptRetired says the kept declaration is read no more: every module the catalogue places on this node has a have of
+// keptRetired says the kept declaration is read no more: every module the seat's placement puts on this node has a have of
 // its own (placedAllHave), so what runs is the agent's alone (ADR 0550 §2, design 47's L3 s9).
 var keptRetired atomic.Bool