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/@babel/runtime/helpers/interopRequireWildcard.js

@@ -0,0 +1,27 @@
+var _typeof = require("./typeof.js")["default"];
+function _getRequireWildcardCache(e) {
+  if ("function" != typeof WeakMap) return null;
+  var r = new WeakMap(),
+    t = new WeakMap();
+  return (_getRequireWildcardCache = function _getRequireWildcardCache(e) {
+    return e ? t : r;
+  })(e);
+}
+function _interopRequireWildcard(e, r) {
+  if (!r && e && e.__esModule) return e;
+  if (null === e || "object" != _typeof(e) && "function" != typeof e) return {
+    "default": e
+  };
+  var t = _getRequireWildcardCache(r);
+  if (t && t.has(e)) return t.get(e);
+  var n = {
+      __proto__: null
+    },
+    a = Object.defineProperty && Object.getOwnPropertyDescriptor;
+  for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) {
+    var i = a ? Object.getOwnPropertyDescriptor(e, u) : null;
+    i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u];
+  }
+  return n["default"] = e, t && t.set(e, n), n;
+}
+module.exports = _interopRequireWildcard, module.exports.__esModule = true, module.exports["default"] = module.exports;