Document D&D scene description artifacts

docs/roadmap/dnd-scene-descriptions.md

@@ -1,6 +1,8 @@
 # D&D Scene Descriptions
 
-Status: Accepted
+Status: Implemented
+
+The durable output contract is [D&D Scene Description Artifact Contract](../integrations/dnd-scene-description-artifacts.md).
 
 ## Purpose
 

docs/roadmap/future.md

@@ -16,13 +16,6 @@ not as committed release dates.
   validator, and normalizer development. Treat model-quality review as an
   iterative human evaluation aid, not a deterministic correctness gate.
 
-### Extract D&D Scene Descriptions
-
-Add one minimal, source-bounded description for each accepted D&D scene chunk.
-The proposed durable contract, scene-kind policy, evidence boundary, and
-relationship to later chunker minimization are defined in
-[D&D Scene Descriptions](dnd-scene-descriptions.md).
-
 ### Minimize And Use D&D Scene Chunking
 
 - Reduce the D&D scene chunker toward its narrow responsibility: identifying