feat: implement gas and delivery admin systems

backend/api/internal/logic/gas/menu_test.go

@@ -0,0 +1,26 @@
+package gas
+
+import "testing"
+
+func TestMenusOnlyAllowGasAdmin(t *testing.T) {
+	if got := MenusForRole("admin"); len(got) == 0 {
+		t.Fatal("admin must receive gas menus")
+	}
+	for _, role := range []string{"root", "delivery", "installer", "operations", ""} {
+		if got := MenusForRole(role); len(got) != 0 {
+			t.Fatalf("role %q must not receive gas admin menus", role)
+		}
+	}
+}
+
+func TestMenuContainsContractAndDeliveryManagement(t *testing.T) {
+	found := map[string]bool{}
+	for _, menu := range MenusForRole("admin") {
+		found[menu.Identity] = true
+	}
+	for _, identity := range []string{"delivery_basic", "gasorder_contract", "invitation_qrcode"} {
+		if !found[identity] {
+			t.Fatalf("missing confirmed menu %q", identity)
+		}
+	}
+}