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/boolbase/README.md

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+#boolbase
+This very simple module provides two basic functions, one that always returns true (`trueFunc`) and one that always returns false (`falseFunc`).
+
+###WTF?
+
+By having only a single instance of these functions around, it's possible to do some nice optimizations. Eg. [`CSSselect`](https://github.com/fb55/CSSselect) uses these functions to determine whether a selector won't match any elements. If that's the case, the DOM doesn't even have to be touched.
+
+###And why is this a separate module?
+
+I'm trying to modularize `CSSselect` and most modules depend on these functions. IMHO, having a separate module is the easiest solution to this problem.

node_modules/boolbase/index.js

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+module.exports = {
+	trueFunc: function trueFunc(){
+		return true;
+	},
+	falseFunc: function falseFunc(){
+		return false;
+	}
+};

node_modules/boolbase/package.json

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+{
+  "name": "boolbase",
+  "version": "1.0.0",
+  "description": "two functions: One that returns true, one that returns false",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/fb55/boolbase"
+  },
+  "keywords": [
+    "boolean",
+    "function"
+  ],
+  "author": "Felix Boehm <me@feedic.com>",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/fb55/boolbase/issues"
+  },
+  "homepage": "https://github.com/fb55/boolbase"
+}