Make combat scene validation more reliable

docs/config.md

@@ -521,11 +521,16 @@ extract:
     - extract/dnd/scene-descriptions/source_refs
     - generic/valid_json_schema
     - extract/dnd/scene-descriptions/source_relatedness
-    - extract/dnd/scene-descriptions/combat_semantics
+    - module: extract/dnd/scene-descriptions/combat_semantics
+      retries: 1
 ~~~
 
 An override replaces, rather than extends, the default chain. See [Module Bindings And Validators](#module-bindings-and-validators) for binding, profile, repair, retry, and failure-policy rules.
 
+The validator retry shown above permits one additional execution against the
+same scene candidate when the LLM-backed validator itself fails; it is separate
+from both the extractor's producer retry and PromptKit structural repair.
+
 When no override is configured, production D&D bindings use the following
 ordered chains. Each row lists extract then normalize; spell chains are the
 same at both stages.