Initial commit: notification-elements-demo app

Interactive Angular 19 demo for @sda/notification-elements-ui with
6 sections: Bell & Feed, Notification Center, Inbox, Comments &
Threads, Mention Input, and Full-Featured layout. Includes mock
data, dark mode toggle, and real-time event log.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

node_modules/piscina/test/load-with-esm.ts

@@ -0,0 +1,21 @@
+import { test } from 'tap';
+
+const importESM : (specifier : string) => Promise<any> =
+  // eslint-disable-next-line no-eval
+  eval('(specifier) => import(specifier)');
+
+test('Piscina is default export', {}, async ({ equal }) => {
+  equal((await importESM('piscina')).default, require('../'));
+});
+
+test('Exports match own property names', {}, async ({ strictSame }) => {
+  // Check that version, workerData, etc. are re-exported.
+  const exported = new Set(Object.getOwnPropertyNames(await importESM('piscina')));
+  const required = new Set(Object.getOwnPropertyNames(require('../')));
+
+  // Remove constructor properties + default export.
+  for (const k of ['prototype', 'length', 'name']) required.delete(k);
+  exported.delete('default');
+
+  strictSame(exported, required);
+});