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/fast-glob/out/providers/stream.d.ts

@@ -0,0 +1,11 @@
+/// <reference types="node" />
+import { Readable } from 'stream';
+import { Task } from '../managers/tasks';
+import ReaderStream from '../readers/stream';
+import { ReaderOptions } from '../types';
+import Provider from './provider';
+export default class ProviderStream extends Provider<Readable> {
+    protected _reader: ReaderStream;
+    read(task: Task): Readable;
+    api(root: string, task: Task, options: ReaderOptions): Readable;
+}