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/@angular/animations/browser/testing/index.d.ts

@@ -0,0 +1,49 @@
+/**
+ * @license Angular v19.2.18
+ * (c) 2010-2025 Google LLC. https://angular.io/
+ * License: MIT
+ */
+
+import { AnimationPlayer, ɵStyleDataMap as _StyleDataMap, NoopAnimationPlayer } from '../../animation_player.d-Dv9iW4uh.js';
+import { AnimationDriver } from '../../animation_driver.d-DAiEDqQt.js';
+import '@angular/core';
+
+/**
+ * @publicApi
+ */
+declare class MockAnimationDriver implements AnimationDriver {
+    static log: AnimationPlayer[];
+    validateStyleProperty(prop: string): boolean;
+    validateAnimatableStyleProperty(prop: string): boolean;
+    containsElement(elm1: any, elm2: any): boolean;
+    getParentElement(element: unknown): unknown;
+    query(element: any, selector: string, multi: boolean): any[];
+    computeStyle(element: any, prop: string, defaultValue?: string): string;
+    animate(element: any, keyframes: Array<_StyleDataMap>, duration: number, delay: number, easing: string, previousPlayers?: any[]): MockAnimationPlayer;
+}
+/**
+ * @publicApi
+ */
+declare class MockAnimationPlayer extends NoopAnimationPlayer {
+    element: any;
+    keyframes: Array<_StyleDataMap>;
+    duration: number;
+    delay: number;
+    easing: string;
+    previousPlayers: any[];
+    private __finished;
+    private __started;
+    previousStyles: _StyleDataMap;
+    private _onInitFns;
+    currentSnapshot: _StyleDataMap;
+    private _keyframes;
+    constructor(element: any, keyframes: Array<_StyleDataMap>, duration: number, delay: number, easing: string, previousPlayers: any[]);
+    reset(): void;
+    finish(): void;
+    destroy(): void;
+    play(): void;
+    hasStarted(): boolean;
+    beforeDestroy(): void;
+}
+
+export { MockAnimationDriver, MockAnimationPlayer };