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/node-gyp-build-optional-packages/package.json

@@ -0,0 +1,32 @@
+{
+  "name": "node-gyp-build-optional-packages",
+  "version": "5.2.2",
+  "description": "Build tool and bindings loader for node-gyp that supports prebuilds",
+  "main": "index.js",
+  "devDependencies": {
+    "array-shuffle": "^1.0.1",
+    "standard": "^14.0.0",
+    "tape": "^5.0.0"
+  },
+  "dependencies": {
+    "detect-libc": "^2.0.1"
+  },
+  "scripts": {
+    "test": "standard && node test"
+  },
+  "bin": {
+    "node-gyp-build-optional-packages": "./bin.js",
+    "node-gyp-build-optional-packages-optional": "./optional.js",
+    "node-gyp-build-optional-packages-test": "./build-test.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/prebuild/node-gyp-build.git"
+  },
+  "author": "Mathias Buus (@mafintosh)",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/prebuild/node-gyp-build/issues"
+  },
+  "homepage": "https://github.com/prebuild/node-gyp-build"
+}