Move renderer tests to captured templates

docs/roadmap/implementation.md

@@ -185,6 +185,12 @@ are deliberately migrated in Stage 6 rather than accommodated in production.
 
 ## Stage 6: Move Renderer Tests Onto Captured Templates
 
+**Completed:** Renderer fixtures and benchmarks now compile captured templates
+before rendering; invalid syntax, missing captures, cancellation, session, and
+artifact behavior remain covered. Go 1.27.3 `go test ./internal/prompt
+./internal/configuration ./internal/usecase` passed, resolving the deferred
+repository and renderer checks.
+
 **Finding:** 3. **Scope:** prompt rendering tests/benchmarks and their use-case/configuration callers.
 
 1. Use `CompileTemplate` and a small `TemplateLookup` fixture, or a loaded