Add comprehensive library expansion with new components and demos

- Add new libraries: ui-accessibility, ui-animations, ui-backgrounds, ui-code-display, ui-data-utils, ui-font-manager, hcl-studio
- Add extensive layout components: gallery-grid, infinite-scroll-container, kanban-board, masonry, split-view, sticky-layout
- Add comprehensive demo components for all new features
- Update project configuration and dependencies
- Expand component exports and routing structure
- Add UI landing pages planning document

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

projects/ui-accessibility/src/lib/ui-accessibility.service.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { UiAccessibilityService } from './ui-accessibility.service';
+
+describe('UiAccessibilityService', () => {
+  let service: UiAccessibilityService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(UiAccessibilityService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});