Finish reef-railiance first-wave handoff

SCOPE.md

@@ -61,10 +61,10 @@ or one-host naming into the reef model.
 
 ## Current State
 
-- Status: active bootstrap
-- Implementation: declaration, initial grouped substrate files, and first
-  repo-local workplan are present
-- Stability: evolving
+- Status: bootstrapped first-wave grouped reef home
+- Implementation: declaration, grouped substrate files, and retained-S1
+  compatibility handoff are present
+- Stability: evolving, with the migration-window split now explicit
 - Usage: wave-1 home reef for the Railiance server group
 
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