Add retrieval agent briefs and interface cards

infospace/agent/consumer-briefs/user-engine.md

@@ -0,0 +1,24 @@
+---
+id: consumer-brief/user-engine
+consumer: user-engine
+generated: true
+---
+
+<!-- GENERATED by info_tech_canon; do not edit by hand. -->
+
+# User Engine Canon Consumer Brief
+
+## Purpose
+
+Evaluate user-management concepts, roles, access traces, profile claims, and governance evidence against the canon before integration.
+
+## Starting Points
+
+- `agent/retrieval-index.md`
+- `agent/templates/canon-interface-card.template.yaml`
+- `profiles/small-saas/profile.yaml`
+- `views/by-concept.md`
+
+## Workplan Boundary
+
+Adoption and repo-specific implementation workplans belong in the consumer repository.