fix(theme): complete namespace swap + page-hero/aura-bg placement + single.spec gating

tests/single.spec.js

@@ -5,15 +5,15 @@ test.use({ viewport: { width: 1920, height: 1080 } });
 
 test.describe('single-project', () => {
   test('project detail renders hero, sidebar, no axe violations', async ({ page }, testInfo) => {
-    // Pick the first project; skip the test gracefully if none exist.
+    // Navigate to the projects archive and pick the first card. The test
+    // fails (not skips) when no projects exist — silently skipping masks
+    // regression of the single-project template itself.
     const response = await page.goto('/projects/');
     expect(response && response.status()).toBeLessThan(400);
 
     const firstLink = page.locator('.archive-projects__grid a.project-card__title-link').first();
-    if (await firstLink.count() === 0) {
-      test.skip(true, 'No projects to test detail page');
-      return;
-    }
+    const linkCount = await firstLink.count();
+    expect(linkCount, 'archive must contain at least one project card to exercise the single-project template').toBeGreaterThan(0);
 
     await Promise.all([
       page.waitForLoadState('networkidle'),