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/license-webpack-plugin/dist/LicenseTextReader.d.ts

@@ -0,0 +1,19 @@
+import { LicenseTextOverrides } from './LicenseTextOverrides';
+import { FileSystem } from './FileSystem';
+import { Module } from './Module';
+import { LicenseFileOverrides } from './LicenseFilesOverrides';
+import { WebpackCompilation } from './WebpackCompilation';
+import { Logger } from './Logger';
+declare class LicenseTextReader {
+    private logger;
+    private fileSystem;
+    private fileOverrides;
+    private textOverrides;
+    private templateDir;
+    private handleMissingLicenseText;
+    constructor(logger: Logger, fileSystem: FileSystem, fileOverrides: LicenseFileOverrides, textOverrides: LicenseTextOverrides, templateDir: string | undefined, handleMissingLicenseText: (packageName: string, licenseType: string | null) => string | null);
+    readLicense(compilation: WebpackCompilation, module: Module, licenseType: string | null): string | null;
+    readText(directory: string, filename: string): string;
+    private guessLicenseFilename;
+}
+export { LicenseTextReader };