Relax private D&D response schemas

docs/integrations/dnd-npc-artifacts.md

@@ -20,6 +20,11 @@ the Unicode-normalized, case-folded canonical name using the identity policy.
 The durable codec enforces the artifact shape and ID syntax; registry identity
 validation remains a separate deterministic concern.
 
+The extractor's private LLM response schema is a separate structural transport
+contract. It omits framework-assigned NPC and source IDs and admits semantic
+candidates for the deterministic shape and source-reference validators; it is
+not part of this durable contract.
+
 ## Output Shape
 
 The payload is one object with a required top-level `npcs` array:

docs/integrations/dnd-spell-artifacts.md

@@ -18,7 +18,9 @@ The durable JSON Schema is owned by the D&D spell artifact codec. The
 extractor's private LLM response schema is a separate transport contract: its
 source-reference objects omit `source_id`, which the extractor assigns while
 mapping the response to the canonical artifact. The LLM DTO and transport
-schema are not part of this durable contract.
+schema are not part of this durable contract. The private schema owns required
+fields, JSON types, object and array shapes, and unknown-field rejection;
+deterministic validators own the durable artifact's semantic constraints.
 
 The output contains canonical spell casts derived from transcript evidence.
 Source IDs are assigned from the input identity; source-unit ranges identify