Record Narratio selector validation

docs/roadmap/implementation.md

@@ -127,6 +127,8 @@ Commit workspace progress separately as `Record the Narratio upgrade in progress
 
 ## Stage 2: Cover the New Selectors and Credential Lists
 
+Completion: complete (2026-09-28).
+
 ### Required Policy Review
 
 Read workspace `AGENTS.md`, `docs/orientation.md`, `docs/conventions.md`,
@@ -263,6 +265,12 @@ Plan approved.
   immediate repeats. Role and workspace `git diff --check` passed. The role
   diff changes only the public configuration interface, README, and existing
   fixtures; production tasks and suite pins are unchanged.
+- Stage 2: `bash -n` and the local integration harness passed after a YAML
+  line-length correction. Baseline null omissions, supplied credential-name
+  lists and named selectors, native offline validation with synthetic values,
+  explicit empty lists/selectors without synthetic values, and clean immediate
+  repeats passed. The older selected-version and supplied-Go cases remained
+  valid. Role `git diff --check` passed.
 
 ## Open Questions