Serve a trusted holder from a runtime of its own account, refuse it in the machine's runtime, and say while an agent can become root where it runs (hq ADR 0259 §8)

cmd/mesh-controller/seats_test.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"context"
+	"strings"
 	"testing"
 
 	"github.com/novox/mesh-controller/internal/catalogue"
@@ -62,3 +64,13 @@ func TestAClaimOutsideTheSetIsShownNotHidden(t *testing.T) {
 		t.Fatalf("a claim outside the set was not shown: %+v", outside)
 	}
 }
+
+// A kinded bench is not handed over by `seat`: each kind is held by its claim (novox/hq ADR 0259).
+func TestAKindedBenchIsNotHandedOver(t *testing.T) {
+	for _, bench := range []string{"channel", "intake"} {
+		err := handOver(context.Background(), bench, "anchor/telegram", false)
+		if err == nil || !strings.Contains(err.Error(), "is a kinded bench") {
+			t.Errorf("%s: %v", bench, err)
+		}
+	}
+}