Add project registry refresh foundation

docs/source-refresh-model.md

@@ -78,6 +78,17 @@ The long-run workflow should become much more natural:
 - AtoCore refreshes the machine representation cleanly
 - OpenClaw consumes the improved context over API
 
+## Current Foundation
+
+The first concrete foundation for this now exists in AtoCore:
+
+- a project registry file records known project ids, aliases, and ingest roots
+- the API can list those registered projects
+- the API can refresh a single registered project from its configured roots
+
+This is not full source automation yet, but it gives the refresh model a real
+home in the system.
+
 ## Healthy Mental Model
 
 Use this distinction: