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/@nodelib/fs.stat/out/adapters/fs.d.ts

@@ -0,0 +1,13 @@
+/// <reference types="node" />
+import * as fs from 'fs';
+import type { ErrnoException } from '../types';
+export declare type StatAsynchronousMethod = (path: string, callback: (error: ErrnoException | null, stats: fs.Stats) => void) => void;
+export declare type StatSynchronousMethod = (path: string) => fs.Stats;
+export interface FileSystemAdapter {
+    lstat: StatAsynchronousMethod;
+    stat: StatAsynchronousMethod;
+    lstatSync: StatSynchronousMethod;
+    statSync: StatSynchronousMethod;
+}
+export declare const FILE_SYSTEM_ADAPTER: FileSystemAdapter;
+export declare function createFileSystemAdapter(fsMethods?: Partial<FileSystemAdapter>): FileSystemAdapter;

node_modules/@nodelib/fs.stat/out/adapters/fs.js

@@ -0,0 +1,17 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.createFileSystemAdapter = exports.FILE_SYSTEM_ADAPTER = void 0;
+const fs = require("fs");
+exports.FILE_SYSTEM_ADAPTER = {
+    lstat: fs.lstat,
+    stat: fs.stat,
+    lstatSync: fs.lstatSync,
+    statSync: fs.statSync
+};
+function createFileSystemAdapter(fsMethods) {
+    if (fsMethods === undefined) {
+        return exports.FILE_SYSTEM_ADAPTER;
+    }
+    return Object.assign(Object.assign({}, exports.FILE_SYSTEM_ADAPTER), fsMethods);
+}
+exports.createFileSystemAdapter = createFileSystemAdapter;