Record Notarius upgrade validation

docs/roadmap/application-upgrade-sequence.md

@@ -32,12 +32,13 @@ Seriatim is unchanged by this sequence.
 
 Release-summary and migration-guidance triage is complete. Standalone
 Scriptorium and Audita adoption are complete after independent review; Notarius
-is next. Add the numbered feature link beside each item when its roadmap
-is created; check it off after independent review and closeout.
+standalone implementation awaits independent review. Add the numbered feature
+link beside each item when its roadmap is created; check it off after
+independent review and closeout.
 
 - [x] [Feature 0018: Scriptorium adoption](features/0018-scriptorium-v0-15-adoption.md) — complete through role `b174c8c`; independent review found no remediation issues.
 - [x] [Feature 0019: Audita adoption](features/0019-audita-v2-adoption.md) — complete through role `c3dd59f`; independent review found no remediation issues.
-- [ ] [Feature 0020: Notarius adoption](features/0020-notarius-v0-8-adoption.md) — roadmap and staged plan approved; ready for implementation.
+- [ ] [Feature 0020: Notarius adoption](features/0020-notarius-v0-8-adoption.md) — standalone role implemented through `6aef48b`; independent review pending, suite unchanged.
 - [ ] Narratio adoption — feature roadmap not yet created.
 - [ ] Suite integration — feature roadmap not yet created.
 

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)

docs/roadmap/implementation.md

@@ -1,6 +1,6 @@
 # Implementation Plan 0020: Adopt Notarius v0.8.1
 
-Status: ready
+Status: implemented — independent review pending
 
 Target executor: GPT-5.6-Terra
 
@@ -151,6 +151,8 @@ Notarius transport retries`.
 
 ## Stage 3: Document Compatibility and Prepare Independent Review
 
+Completion: complete (2026-09-28).
+
 ### Required Policy Review
 
 Read workspace `AGENTS.md`, `docs/orientation.md`, `docs/conventions.md`,
@@ -228,6 +230,11 @@ Plan approved.
   cases. Existing v0.7.0 selection, supplied-Go recovery, imports, pipelines,
   cache behavior, and clean immediate repeats passed. Role `git diff --check`
   passed.
+- Stage 3: role commits `b1b922c`, `380b6a3`, and `6aef48b` provide the
+  implementation and documentation. The README was checked against tagged
+  v0.8.0/v0.8.1 upstream guidance. Documentation-only changes reused Stage 2
+  integration evidence; role and workspace `git diff --check` and
+  `scripts/status` passed. F0020 remains open for independent review.
 
 ## Open Questions