Close out the standalone Notarius upgrade

docs/roadmap/features/0020-notarius-v0-8-adoption.md

@@ -1,6 +1,6 @@
 # Feature 0020: Adopt Notarius v0.8.1 in the Standalone Role
 
-Status: in_progress — implementation complete; independent review pending
+Status: done
 
 ## Summary
 
@@ -142,9 +142,8 @@ existing suite compatibility set.
 
 ## Dependencies and Follow-up Work
 
-The roadmap is approved; execution is defined in the
-[implementation plan](../implementation.md). Narratio v3 standalone adoption
-follows independent review and closeout. Final integration
+Implementation and independent review are complete. Git history preserves the
+completed staged plan. Narratio v3 standalone adoption is next. Final integration
 owns the coordinated overlay/credential/configuration migration and public suite
 dependency updates. No open product decision is required for this narrow scope.
 
@@ -158,8 +157,14 @@ dependency updates. No open product decision is required for this narrow scope.
   rendered/effective retry checks, older-version and supplied-Go behavior,
   import and pipeline composition, and clean immediate repeats. Role and
   workspace whitespace checks passed.
-- The role implementation awaits independent review. Narratio adoption and
-  coordinated suite migration remain separate follow-up work.
+- Independent review of all three role commits found no required remediation
+  or unjustified strengthening of requirements. Syntax, production-profile
+  lint, shell syntax, whitespace checks, and installed v0.8.1 native
+  configuration validation passed again during review. The review used the
+  recorded successful integration run rather than rerunning its host-mutating
+  scenarios. No remediation document was changed.
+- Reviewed standalone revision: `6aef48b`. Narratio adoption and coordinated
+  suite migration remain separate follow-up work; suite pins are unchanged.
 
 ## Upstream References