fix(ui): render navbar brand prop outside slot

packages/ui/test/ui-redesign-contract.test.ts

@@ -126,11 +126,14 @@ describe("@wrnexus/ui redesign component pack", () => {
     expect(source).not.toContain(".wrn-navbar__topbar:not(:empty)");
   });
 
-  test("Navbar exposes a brand slot while retaining the brand prop fallback", async () => {
+  test("Navbar renders its brand prop independently from the optional brand slot", async () => {
     const source = await readFile(join(componentsDir, "Navbar.wrn"), "utf8");
 
-    expect(source).toContain('<slot name="brand">');
+    expect(source).toContain('<slot name="brand" />');
     expect(source).toContain("brand.logo || brand.icon || brand.label || brand.description");
+    expect(source.indexOf("brand.logo || brand.icon || brand.label || brand.description")).toBeLessThan(
+      source.indexOf('<slot name="brand" />'),
+    );
   });
 
   test("Navbar renders slotted utilities before its built-in actions", async () => {