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/needle/examples/parsed-stream2.js

@@ -0,0 +1,21 @@
+//////////////////////////////////////////
+// This example illustrates a more complex
+// example of parsing a JSON stream.
+//////////////////////////////////////////
+
+var needle     = require('./../'),
+    JSONStream = require('JSONStream');
+
+var url  = 'http://jsonplaceholder.typicode.com/db';
+
+// Initialize our GET request with our default (JSON) 
+// parsers disabled.
+
+var json = new needle.get(url, {parse: false})
+    // And now interpret the stream as JSON, returning only the
+    // title of all the posts.
+    .pipe(new JSONStream.parse('posts.*.title'));
+
+json.on('data', function (obj) {
+  console.log('got title: \'' + obj + '\'');
+})