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/bonjour-service/dist/lib/browser.d.ts

@@ -0,0 +1,32 @@
+import KeyValue from './KeyValue';
+import { EventEmitter } from 'events';
+import Service from './service';
+export interface BrowserConfig {
+    type: string;
+    name?: string;
+    protocol?: 'tcp' | 'udp';
+    subtypes?: string[];
+    txt?: KeyValue;
+}
+export type BrowserOnUp = (service: Service) => void;
+export declare class Browser extends EventEmitter {
+    private mdns;
+    private onresponse;
+    private serviceMap;
+    private txt;
+    private name?;
+    private txtQuery;
+    private wildcard;
+    private _services;
+    constructor(mdns: any, opts: BrowserConfig | BrowserOnUp | null, onup?: BrowserOnUp);
+    start(): void;
+    stop(): void;
+    update(): void;
+    get services(): Service[];
+    private addService;
+    private updateService;
+    private removeService;
+    private goodbyes;
+    private buildServicesFor;
+}
+export default Browser;