Record Narratio upgrade validation

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

@@ -1,6 +1,6 @@
 # Feature 0021: Adopt Narratio v3.0.0 in the Standalone Role
 
-Status: ready
+Status: in_progress — implementation complete; independent review pending
 
 ## Summary
 
@@ -205,6 +205,20 @@ review retry/timeout budgets rather than copying retired tuning mechanically.
 
 None identified for this standalone scope.
 
+## Implementation Evidence
+
+- Standalone role commits: `a28f22c` (v3 interface and migrated fixtures),
+  `45f6836` (selector and credential-list coverage), and `3c0700b` (upgrade
+  guidance). Production tasks, suite dependencies, collection, and consumer
+  remain unchanged.
+- `bash -n` and the local integration harness passed. The harness includes
+  syntax check and production-profile lint and exercised native offline
+  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.
+
 ## Upstream References
 
 - [Narratio v3.0.0 release](https://gitea.maximumdirect.net/eric/narratio/src/tag/v3.0.0/docs/releases/v3.0.0.md)