Record Notarius upgrade validation

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: ready
+Status: in_progress — implementation complete; independent review pending
 
 ## Summary
 
@@ -148,6 +148,19 @@ follows independent review and closeout. Final integration
 owns the coordinated overlay/credential/configuration migration and public suite
 dependency updates. No open product decision is required for this narrow scope.
 
+## Implementation Evidence
+
+- Standalone role commits: `b1b922c` (v0.8.1 default and optional retry
+  interface), `380b6a3` (integration coverage), and `6aef48b` (upgrade
+  guidance). No production tasks or suite dependencies changed.
+- Syntax check and production-profile lint passed. `bash -n` and the local
+  integration harness passed with native offline configuration validation,
+  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.
+
 ## Upstream References
 
 - [v0.8.1 configuration](https://gitea.maximumdirect.net/eric/notarius/src/tag/v0.8.1/docs/config.md)