Update examples and benchmarks for identified resources

docs/roadmap/implementation.md

@@ -803,6 +803,13 @@ Validation: run all three examples through the semantic checker once runnable.
 Use a short focused construction benchmark if needed to investigate a suspected
 repeated-scan regression, not to claim unmeasured performance improvements.
 
+Completion: the three maintained examples and benchmark/shared fixtures now use
+identified resources and ordered builders. The preparation example includes a
+headerless item import and an inherited replacement profile. The semantic example
+checker, full public contract suite, and short configuration benchmark fixture
+runs passed on Go 1.27.0. The public run also verified the previously deferred
+preparation and observation tests after updating their shared fixture.
+
 ## Stage 20: Document Formats And Internal Handoff
 
 Scope: `docs/formats.md`, `docs/internal/sources.md`, and other current internal