Document scene-aware combat extraction

docs/integrations/dnd-scene-description-artifacts.md

@@ -118,3 +118,13 @@ Use `dnd/scenes` to form accepted scene chunks, then select
 [complete D&D configuration](../../examples/dnd-complete.config.yml) includes
 this lane alongside the other D&D artifacts. Selectable keys and default
 validator chains are defined in [Configuration](../config.md).
+
+## Downstream combat use
+
+The combat-turn extractor consumes this approved artifact as required
+eligibility control context through an explicit ordered reference binding. It
+uses only an exact chunk ID and source-range match with `kind: combat` to permit
+combat extraction; titles, summaries, and scene references do not become combat
+prompt material or evidence. The complete downstream behavior, including empty
+results and warnings for unavailable coverage, is defined in the
+[D&D combat-turn artifact contract](dnd-combat-turn-artifacts.md).