docs: 🗑️ place this project into archive

README.md

@@ -1,11 +1,24 @@
 # ootk-core
 
-<!-- [![Release](https://img.shields.io/github/v/release/thkruz/ootk-core?style=flat-square)](https://www.npmjs.com/package/ootk-core) -->
-
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 [![License](https://img.shields.io/github/license/thkruz/ootk-core?style=flat-square)](LICENSE.md)
 
+## ⚠️ ARCHIVE NOTICE ⚠️
+
+**This repository has been archived and is now read-only.**
+
+This library was originally split from the main [ootk](https://github.com/thkruz/ootk) project to support a specific project that is no longer being worked on. Maintaining two separate libraries has created a substantial amount of work, making it difficult to properly support both libraries alongside my own projects. Going forward, all functionality is being consolidated back into the main [ootk](https://github.com/thkruz/ootk) library under the AGPL license.
+
+**What this means for you:**
+
+- You can continue using this version under the MIT license
+- No updates or support will be provided for this repository
+- Known issues have already been fixed in the main ootk library
+- For maximum functionality and ongoing support, transition to [ootk](https://github.com/thkruz/ootk)
+
+This consolidation will allow me to support one library properly instead of two libraries poorly.
+
 > An Orbital Object Toolkit in Your Web Browser
 
 **ootk-core** is the core libraries of [ootk](https://github.com/thkruz/ootk) for doing math related to orbital objects