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/@jsonjoy.com/buffers/lib/f16.js

@@ -0,0 +1,18 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.decodeF16 = void 0;
+const pow = Math.pow;
+const decodeF16 = (binary) => {
+    const exponent = (binary & 0x7c00) >> 10;
+    const fraction = binary & 0x03ff;
+    return ((binary >> 15 ? -1 : 1) *
+        (exponent
+            ? exponent === 0x1f
+                ? fraction
+                    ? NaN
+                    : Infinity
+                : pow(2, exponent - 15) * (1 + fraction / 0x400)
+            : 6.103515625e-5 * (fraction / 0x400)));
+};
+exports.decodeF16 = decodeF16;
+//# sourceMappingURL=f16.js.map