Record the standalone Scriptorium upgrade for review

docs/roadmap/implementation.md

@@ -157,6 +157,8 @@ layout, default version/model, or file-module ownership/existence postconditions
 
 ## Stage 3: Document Compatibility and Record the Review Handoff
 
+Completion: complete (2026-09-28).
+
 ### Required Policy Review
 
 Read `AGENTS.md`, `docs/orientation.md`, `docs/conventions.md`,
@@ -223,6 +225,10 @@ Roadmap and implementation plan approved by the user.
   validation and inspection of a caller-supplied relative import and explicit
   retry zero, root serialization, and clean repeat convergence. The role's
   `git diff --check` passed.
+- Stage 3: role commit `b174c8c` documents the tagged v0.15.0 compatibility and
+  licensing contracts. Role and workspace `git diff --check` passed; local
+  Markdown targets and tagged upstream files were checked. Pipeline, collection,
+  and consumer pins remain unchanged. Feature 0018 awaits independent review.
 
 ## Open Questions