Apply spell normalization follow-up fixes

docs/integrations/dnd-spell-artifacts.md

@@ -101,6 +101,13 @@ normalizer uses these reason codes:
 | `source_references_normalized` | Reference order changed or exact duplicate references were removed. |
 | `duplicate_spell_cast_collapsed` | A later cast matched the retained cast's complete duplicate identity. |
 
+Only warnings from an accepted normalize attempt are promoted to
+`warnings.json`. If an unresolved name reaches the default normalize validator
+chain, the catalog validator rejects the candidate with `unknown_spell`; the
+`spell_name_unresolved` warning remains in the attempt's debug artifact. An
+explicit validator override that accepts the candidate promotes the unresolved
+warning normally.
+
 ## Manifest Metadata
 
 The extractor adds prompt and response-schema provenance under the artifact lane