Close out the standalone Narratio upgrade

docs/roadmap/features/0021-narratio-v3-adoption.md

@@ -1,6 +1,6 @@
 # Feature 0021: Adopt Narratio v3.0.0 in the Standalone Role
 
-Status: in_progress — implementation complete; independent review pending
+Status: done
 
 ## Summary
 
@@ -194,9 +194,9 @@ policy choices against already-reviewed standalone roles.
 
 ## Dependencies and Follow-up Work
 
-Standalone Scriptorium, Audita, and Notarius adoption is complete. This roadmap
-is approved; execution is defined in the [implementation plan](../implementation.md).
-After implementation and review, the final integration feature owns D&D
+Standalone adoption and independent review are complete for all four upgraded
+applications. Git history preserves the completed staged plan. The next,
+coordinated integration feature owns D&D
 configuration, credentials, overlay assets, coordinated dependency pins,
 collection assembly, and consumer migration guidance. It must deliberately
 review retry/timeout budgets rather than copying retired tuning mechanically.
@@ -216,8 +216,14 @@ None identified for this standalone scope.
   baseline, named, and explicit-empty validation, selected v2.1.0 behavior,
   supplied-Go recovery, synthetic credential loading, and clean immediate
   repeats. Role and workspace whitespace checks passed.
-- The implemented role awaits independent review. Coordinated suite migration
-  remains separate follow-up work.
+- Independent review on 2026-09-29 found no required remediation or unjustified
+  strengthening of requirements. Syntax checks, production-profile lint, shell
+  syntax, whitespace checks, and native v3.0.0 configuration validation passed
+  again during review. The review used recorded successful integration runs
+  rather than rerunning their host-mutating scenarios. No remediation document
+  was changed.
+- Reviewed standalone revision: `3c0700b`. Coordinated suite migration remains
+  separate follow-up work; suite, collection, and consumer pins are unchanged.
 
 ## Upstream References