Architecture blueprint and workplan refinement

workplans/KONT-WP-0007-governed-retrieval-context-graph.md

@@ -29,6 +29,13 @@ Primary: FR-040 to FR-050 and FR-060 to FR-071.
 
 Supporting: FR-120 to FR-126, FR-143 to FR-146, FR-163, FR-200 to FR-204.
 
+## Architecture Constraint
+
+Implement retrieval through retrieval services, search ports, repository ports,
+and policy checks described in `docs/architecture-blueprint.md`. Search indexes
+and ranking backends are adapters; they must not define the stable query or
+result contracts.
+
 ## R7.1 - Implement query contracts pagination sorting and result envelopes
 
 ```task
@@ -167,4 +174,6 @@ Acceptance:
 - Retrieval tests cover text, metadata, lifecycle, relationship, contextual
   entity, pagination, permission, snippet, and feedback behavior.
 - Retrieval does not bypass policy or source provenance.
+- Search, relationship, and context retrieval contracts follow
+  `docs/architecture-blueprint.md`.
 - `python3 -m pytest` passes.