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/less/lib/less-browser/plugin-loader.js

@@ -0,0 +1,24 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+var tslib_1 = require("tslib");
+/**
+ * @todo Add tests for browser `@plugin`
+ */
+var abstract_plugin_loader_js_1 = tslib_1.__importDefault(require("../less/environment/abstract-plugin-loader.js"));
+/**
+ * Browser Plugin Loader
+ */
+var PluginLoader = function (less) {
+    this.less = less;
+    // Should we shim this.require for browser? Probably not?
+};
+PluginLoader.prototype = Object.assign(new abstract_plugin_loader_js_1.default(), {
+    loadPlugin: function (filename, basePath, context, environment, fileManager) {
+        return new Promise(function (fulfill, reject) {
+            fileManager.loadFile(filename, basePath, context, environment)
+                .then(fulfill).catch(reject);
+        });
+    }
+});
+exports.default = PluginLoader;
+//# sourceMappingURL=plugin-loader.js.map