IX20: the validator's tests hold a step's status out of a manifest and read the build seats' new accepts

A manifest naming a status is refused as an unknown field (strict decoding); the
two seat-table tests read the seat definitions as contracts now answer them.

Builds: design 47 G §6, §21, §23, §28, §101, §95 test

Claude-Session: https://claude.ai/code/session_01JG73KEq4zoDfM9WtYpcQgZ

modules/mesh-delivery-indexer/judge/judge_test.go

@@ -27,6 +27,9 @@ func TestTheJudge(t *testing.T) {
 			want: map[string]string{"a": `secret-`}},
 		{name: "an unknown field", raws: map[string]string{"a": `{"module":"a","version":"1","a-field-from-later":1}`},
 			want: map[string]string{"a": `"a-field-from-later"`}},
+		// Design 47 G §23, §28: a step's status is kept in the registration and never in a manifest.
+		{name: "a manifest naming a step's status", raws: map[string]string{"a": `{"module":"a","version":"1","policy":{"lint":"bypass"}}`},
+			want: map[string]string{"a": `"policy"`}},
 		{name: "a manifest under another name", raws: map[string]string{"b": `{"module":"a","version":"1"}`},
 			want: map[string]string{"b": `of module "a", not "b"`}},
 		{name: "a seat declared twice",

modules/mesh-delivery-indexer/judge/rules_test.go

@@ -3918,7 +3918,7 @@ func caseNodeBuildAgentIsRetiredForTheBuildSeats(t *testing.T) {
 	}
 	for _, name := range []string{"node-build-go", "node-build-node", "node-build-image"} {
 		s, ok := catalogue.SeatNamed(name)
-		if !ok || s.Scope != catalogue.ScopeNode || !s.PulledByKind || strings.Join(s.Accepts, ",") != "delivery,check,recheck" {
+		if !ok || s.Scope != catalogue.ScopeNode || !s.PulledByKind || !slices.Contains(s.Accepts, "delivery") || !slices.Contains(s.Accepts, "check") || !slices.Contains(s.Accepts, "step") || !slices.Contains(s.Accepts, "recheck") {
 			t.Fatalf("%s = %+v", name, s)
 		}
 		if !s.Yields {
@@ -4683,7 +4683,7 @@ func caseTheMeshsOwnSeatsAreStillClaimable(t *testing.T) {
 	// It delivers the bus, so its holder provides the bus — the rule this check now enforces.
 	m := catalogue.Manifest{Module: "nats",
 		Provides: []catalogue.Offer{{Name: "mesh-bus", Scope: catalogue.ScopeMesh, Credential: &catalogue.OfferCredential{Form: catalogue.CredentialFormNone}}},
-		Claims:   []catalogue.Claim{{Name: "mesh-broker", Scope: catalogue.ScopeMesh}}}
+		Claims:   []catalogue.Claim{{Name: "mesh-broker", Scope: catalogue.ScopeMesh, Serves: []string{"snapshot-kept", "restore-kept"}}}}
 	if got := problemsFor(t, catalogue.Shelf{"nats": m}); got != "" {
 		t.Fatalf("a mesh seat was refused by the derived check: %s", got)
 	}