Resolve smoke-test targets

docs/roadmap/implementation.md

@@ -289,6 +289,9 @@ selection failure, default-reference failure only on use, cross-backend/default
 identity, endpoint-only profiles, and HTTP model incompleteness. Use real captured
 configuration and failing external readers to prove no application preparation.
 
+**Completed: 2026-10-13.** Validation passed: `go test ./...`, `go vet ./...`,
+and `git diff --check`.
+
 ## Stage 4: Add OpenRouter Catalog Diagnostic Assets
 
 Scope: `../promptkit-backend-openrouter` only, plus this plan's completion record.