Share the D&D NPC registry and prompt grounding

internal/modules/dnd/extract/spells/assets/prompts/dnd.spells.yaml

@@ -32,9 +32,9 @@ messages:
     cache_control:
       type: ephemeral
   - role: user
-    content_file: ./catalog.md
+    content_file: ./sharedassets/common-dnd-npcs.md
   - role: user
-    content_file: ./npc_registry.md
+    content_file: ./catalog.md
   - role: user
     content_file: ./task.md
   - role: user

internal/modules/dnd/extract/spells/assets/prompts/npc_registry.md

@@ -1,11 +0,0 @@
-The optional canonical NPC registry for this extraction is provided below as
-durable JSON. Use it only to prefer exact canonical NPC names and recognize
-their aliases when the transcript identifies a caster.
-
-Registry entries are grounding material, not evidence that a spell was cast.
-Do not extract a spell, caster, effect, or source reference from the registry.
-NPC source references describe registry provenance and may belong to another
-session; they are never spell evidence. Preserve the existing player and party
-policy for identifying PCs from the transcript.
-
-{{ input "npcs" }}