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/codegen/lib/switch.js

@@ -0,0 +1,16 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.createSwitch = void 0;
+const dynamicFunction_1 = require("./dynamicFunction");
+const createSwitch = (fn, codegen) => {
+    let counter = 0;
+    const [proxy, set] = (0, dynamicFunction_1.dynamicFunction)((...args) => {
+        if (counter > 2)
+            set(codegen());
+        counter++;
+        return fn(...args);
+    });
+    return proxy;
+};
+exports.createSwitch = createSwitch;
+//# sourceMappingURL=switch.js.map