Index and validate identified resources

docs/roadmap/implementation.md

@@ -299,6 +299,13 @@ Validation: target tests cover a root resource, namespaced resources sharing a
 local ID, and partial-profile completion. Upstream duplicates must fail before
 an execution map can silently overwrite a record.
 
+Completion: final backend, profile, and prompt IDs and references are validated
+at list-entry paths; backend and profile runtime indexes use full identities.
+Added root and independent namespace target coverage and converted the strict
+duplicate fixture to identified lists. The focused tests remain deferred because
+prompt materialization and remaining configuration fixtures have not yet been
+migrated. Formatting and `git diff --check` passed.
+
 ## Stage 6: Materialize Prompts From Effective List Entries
 
 Scope: prompt resolution/capture in `internal/configuration/prompts.go` and