Migrate NPC normalization to shared reconciliation

internal/modules/dnd/normalize/npcs/assets/prompts/dnd.npcs.normalize.yaml

@@ -14,7 +14,7 @@ messages:
   - role: user
     content_file: ./task.md
   - role: user
-    content_file: ./instructions.md
+    content_file: ./sharedassets/common-dnd-entity-reconciliation.md
     cache_control:
       type: ephemeral
   - role: user
@@ -26,5 +26,5 @@ messages:
 output:
   format: json
   validation_mode: json_schema
-  schema_path: dnd_npcs_normalize_llm.v1.json
+  schema_path: dnd_entity_reconcile_llm.v1.json
   repair_attempts: 0

internal/modules/dnd/normalize/npcs/assets/prompts/instructions.md

@@ -1,10 +0,0 @@
-Return duplicate groups only when the transcript context clearly establishes a
-single individual. Prefer no group when identity is ambiguous.
-
-Copy supplied display names into each group's members. Choose canonical_name
-from that same group's supplied members. Prefer a complete stable proper name
-over an abbreviation, but prefer an unadorned proper name over that name plus a
-contextual class, role, title, or relationship descriptor unless the descriptor
-is established as part of the name.
-
-Do not invent names, source references, replacement records, or explanations.

internal/modules/dnd/normalize/npcs/assets/prompts/task.md

@@ -1,2 +1,8 @@
-Identify only supplied NPC display names that clearly refer to the same
-individual in the supplied transcript context.
+Review NPC candidates and their cited transcript context to identify aliases
+that refer to the same individual. Propose only groups supported by the
+transcript, and preserve distinct individuals even when their names are
+similar.
+
+For every accepted group, choose as canonical the supplied candidate whose
+display name is the most complete and clear NPC name. Do not invent, edit, or
+combine display names.