Record role documentation compatibility blocker

docs/roadmap/implementation.md

@@ -1,6 +1,6 @@
 # Implementation Plan 0016: Deploy the D&D Pipeline to `pipeline-dnd`
 
-Status: in_progress
+Status: blocked
 
 Target executor: GPT-5.6-Terra
 
@@ -394,6 +394,16 @@ independent review.
   operational controller details, and Vault workflow/values remain Stage 3
   prerequisites. The acceptance session/audio selection remains a Stage 4
   prerequisite. No live deployment has begun.
+- Stage 2 consumer changes are prepared but not committed because required
+  validation exposed a compatibility conflict in the reviewed dependency pins.
+  Installation from the mixed public manifest succeeded, the playbook selected
+  only `pipeline-dnd`, and syntax checking passed. With the required Ansible
+  Core 2.21.3 toolchain, `ansible-doc -t role` resolves the pipeline, Seriatim,
+  and Audita roles, but rejects the pinned `v0.1.0` Notarius, Scriptorium, and
+  Narratio argument specifications because public options lack required
+  `description` fields. The plan keeps those repositories read-only and
+  requires reporting demonstrated pin conflicts rather than changing them, so
+  Stage 2 and all dependent work are blocked pending an approved resolution.
 
 ## Open Questions