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/gyp/docs/README.md

@@ -0,0 +1,27 @@
+# Generate Your Projects (gyp-next)
+
+GYP is a Meta-Build system: a build system that generates other build systems.
+
+* [User documentation](./UserDocumentation.md)
+* [Input Format Reference](./InputFormatReference.md)
+* [Language specification](./LanguageSpecification.md)
+* [Hacking](./Hacking.md)
+* [Testing](./Testing.md)
+* [GYP vs. CMake](./GypVsCMake.md)
+
+GYP is intended to support large projects that need to be built on multiple
+platforms (e.g., Mac, Windows, Linux), and where it is important that
+the project can be built using the IDEs that are popular on each platform
+as if the project is a "native" one.
+
+It can be used to generate XCode projects, Visual Studio projects, Ninja
+build files, and Makefiles. In each case GYP's goal is to replicate as
+closely as possible the way one would set up a native build of the project
+using the IDE.
+
+GYP can also be used to generate "hybrid" projects that provide the IDE
+scaffolding for a nice user experience but call out to Ninja to do the actual
+building (which is usually much faster than the native build systems of the
+IDEs).
+
+For more information on GYP, click on the links above.