Add registry feed and library inventory

README.md

@@ -60,3 +60,15 @@ The initial service exposes repository registration, graph snapshot ingestion,
 artifact attachment, graph query endpoints, State Hub export, and early
 Backstage/xRegistry projection endpoints. It stores snapshots in SQLite and
 reuses the Fabric graph export shape.
+
+Feed the running service from this checkout:
+
+```bash
+railiance-fabric registry sync --repo-slug railiance-fabric .
+```
+
+Ingest a CycloneDX SBOM as queryable library inventory:
+
+```bash
+railiance-fabric registry ingest-cyclonedx bom.json --repo-slug railiance-fabric
+```