Migrate prompt fixtures to direct definitions

docs/roadmap/implementation.md

@@ -1,6 +1,6 @@
 # Dependency upgrades, discovery, and smoke testing implementation plan
 
-Status: Stages 1–4 complete; Stage 5 is next.
+Status: Stages 1–5 complete; Stage 6 is next.
 
 ## Authority and baseline
 
@@ -343,6 +343,16 @@ presentation, and error identity, not upstream detection algorithms.
 **Complete when:** the previous delivered feature set works through v0.16.0
 without compatibility scaffolding or implicit catalogs.
 
+**Completed:** 2026-10-17. PromptKit fixtures now use direct prompt definitions,
+explicit profiles/backends, and distinct IDs for multiple prompts. ckprompt
+tests use the ID-only inspection and validation requests and verify that the
+removed version flags are unavailable. Semantic YAML tests cover absent,
+present-empty, and nonempty versions in prompt inspection, requirements, and
+catalog reports; PromptKit-specific requirement classification assertions were
+removed from the affected adapter/consumer tests. The ckprompt suite passed,
+and composed named inspection, requirements show, and request validation all
+ran successfully against the migrated fixture.
+
 ## Stage 6: Extend catalog contracts and engine adapters
 
 **Primary files:** ckprompt public request declarations, `Suite`, `FromEngine`,