Move integration code into optional modules

docs/roadmap/implementation.md

@@ -1,6 +1,6 @@
 # Implement the optional integration modules and captured registration API
 
-Status: decision-complete plan for the module/API transition; implementation pending.
+Status: implementation in progress. Stage 1 is complete; subsequent work follows the ordered roadmap.
 Execute the stages in order. Each stage is sized as a separate Luna coding-agent
 assignment. This document authorizes no publication or changes to sibling
 repositories.
@@ -150,8 +150,17 @@ compatibility relocation layer.
    tidy partially refactored packages or add temporary root re-exports. Final
    manifests and sums are reviewed after their owners compile.
 
-**Completion evidence:** inspect source/test/example ownership and the three module
-declarations. Explain any shared test split. Compilation is not required here.
+**Completion evidence — complete:** configuration source/tests/benchmarks and the
+simple example now belong to `integrations/ckconfig`; PromptKit source/tests/
+benchmarks and the composed example belong to `integrations/ckprompt`. The root
+contains the core package and generic dispatch metadata refresh test, with no
+optional-library consumer. The three declarations use the selected module paths
+and Go 1.26.0. The two configuration cancellation cases and three configuration
+benchmarks moved to ckconfig; PromptKit cancellation and report benchmark moved
+to ckp; the mixed registration/help refresh test moved to ckp while the generic
+core refresh test remains in root. No compatibility relocation layer was added.
+As specified, compilation is not required for this ownership step; manifests and
+sums remain for review after the owners compile.
 
 ## Stage 2: Implement core-owned values and immutable declarations