The seat declares the facts its holder states

The grant permitted the control plane to state what it applied and the seat said nothing about it, so
the check that every derived subscription has an owner found the catalogue subscribing to a subject
nothing publishes — which is exactly the fault that check exists for, pointed at me.

A seat carries the protocol of its role (novox/hq ADR 0129), so the facts are the mesh-controller
seat's `emits`. That is also what lets another module declare it consumes them. No accepts, so no work
queue is raised for the seat — only what its holder may say. The agreement test now holds all three
places to one another: the seat, the grant, and the words the mesh states them with.

internal/broker/states_agreement_test.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	"github.com/novox/mesh-controller/internal/broker"
+	"github.com/novox/mesh-controller/internal/catalogue"
 	"github.com/novox/mesh-controller/internal/link"
 )
 
@@ -27,4 +28,17 @@ func TestTheFactsTheGrantPermitsAreTheFactsTheMeshStates(t *testing.T) {
 	if len(broker.ControllerStates) != 3 {
 		t.Errorf("the grant permits %v, which is more than the mesh states", broker.ControllerStates)
 	}
+	// **And the seat says it.** A seat carries the protocol of its role (novox/hq ADR 0129), so the
+	// facts the control plane states are the seat's `emits` — which is what lets anything else declare
+	// that it consumes them, and what the subject-agreement check reads to know they have an owner.
+	var declared []string
+	for _, seat := range catalogue.SeatsWithAProtocol() {
+		if seat.Name == broker.ControllerSeat {
+			declared = seat.Emits
+		}
+	}
+	if !slices.Equal(declared, broker.ControllerStates) {
+		t.Errorf("the %s seat emits %v and the grant permits %v", broker.ControllerSeat,
+			declared, broker.ControllerStates)
+	}
 }