Add retirement notice to README (#637)

DTCurrie · web-flow · commit 614243ec5de9 · 2025-12-03T15:06:09.000-05:00
diff --git a/README.md b/README.md
@@ -1,3 +1,6 @@
+> [!CAUTION]
+> This repository is in the process of being retired, and is no longer actively maintained. If you are looking for the current prime project, see: https://github.com/viamrobotics/app/blob/main/prime/README.md
+
 # P.R.I.M.E.
 
 Pretty Rad Interactive Modular Elements
