Add mono-repo consolidation notice to README

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: scotwells

README.md

@@ -1,3 +1,17 @@
-# galactic-agent
+# Galactic Agent
 
-Documentation lives here: http://datum.net/docs/galactic-vpc/#galactic-agent
+> [!IMPORTANT]
+> **This project has found a new home!**
+>
+> Hi there! Thanks for stopping by. We've brought all of the Galactic projects together into a single repository to make things easier for everyone — one place to find everything, contribute, and stay up to date.
+>
+> **You can find all ongoing development here:**
+> **[github.com/datum-cloud/galactic](https://github.com/datum-cloud/galactic)**
+>
+> This repository is no longer actively maintained as a standalone project. All future updates, issues, and contributions will happen in the unified Galactic repo.
+>
+> We'd love to see you there!
+
+---
+
+*This repository has been archived as part of the Galactic mono-repo consolidation.*