Read memberships from the grants part's state, what the mesh holds from the indexer and placement, and give bundles newest, since and watch on logs, so the tool runner asks the controller for nothing it keeps (issue 1955, ADR 0571 clauses 1, 4, 5, 7)

Pins mesh-sdk bb993dd. The assignments stream stays the membership's
fallback until the lease write; a log another module keeps is read as
<module>.<log>.

node-tools/internal/bus/streams_test.go

@@ -160,6 +160,37 @@ func TestAModuleHearsEveryStreamItsMembershipNames(t *testing.T) {
 		}
 		return nil
 	})
+
+	// The membership as the grants part keeps it (ADR 0571 clause 7): read first, applied live, and the assignments
+	// stream's copy passed over once the state has given one.
+	granted := reader
+	granted.Hears = []bus.HeardIssued{{Stream: "MAIL", Consumer: "from-grants"}}
+	mesh.IssueInGrants(t, granted)
+	again, err := bus.Connect(bus.Credential{URL: mt.URL(t), Module: "node-tools", Node: "anchor"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	again.Logf = func(string, ...any) {}
+	t.Cleanup(again.Close)
+	again.Follow("reader")
+	consumerOf := func() string {
+		if m := again.Membership("reader"); m != nil && len(m.Hears) == 1 {
+			return m.Hears[0].Consumer
+		}
+		return ""
+	}
+	if got := consumerOf(); got != "from-grants" {
+		t.Fatalf("the membership read at the follow names %q, want the grants part's", got)
+	}
+	mesh.Issue(t, reader)
+	granted.Hears[0].Consumer = "from-grants-2"
+	mesh.IssueInGrants(t, granted)
+	mt.Until(t, func() error {
+		if got := consumerOf(); got != "from-grants-2" {
+			return fmt.Errorf("the membership names %q, want the grants part's change", got)
+		}
+		return nil
+	})
 }
 
 // novox/hq ADR 0363 §6 (issue 725): a consumer the membership names before the controller made it is bound once