Centralize NPC LLM assets

assets/dnd/npcs/normalize/prompts/candidates.md

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+The supplied NPC candidates are below. Use only these display names in the
+response.
+
+{{ input "candidates" }}

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

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+id: dnd.npcs.normalize
+version: "v1"
+default_profile: dnd-extraction
+inputs:
+  - name: candidates
+    required: true
+    content_type: application/json
+  - name: transcript
+    required: true
+    content_type: application/json
+messages:
+  - role: system
+    content_file: ./sharedassets/common-dnd-system.md
+  - role: user
+    content_file: ./task.md
+  - role: user
+    content_file: ./sharedassets/common-dnd-entity-reconciliation.md
+    cache_control:
+      type: ephemeral
+  - role: user
+    content_file: ./candidates.md
+  - role: user
+    content_file: ./sharedassets/common-dnd-transcript.md
+    cache_control:
+      type: ephemeral
+output:
+  format: json
+  validation_mode: json_schema
+  schema_path: dnd_entity_reconcile_llm.v1.json
+  repair_attempts: 0

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

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+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 only a supplied candidate from
+that evidence-supported duplicate group. Prefer a complete, stable proper name
+over an abbreviation. Prefer an unadorned proper name over that name plus a
+contextual class, role, title, or relationship descriptor unless the transcript
+establishes the descriptor as part of the person's name. A longer display name
+is not inherently more canonical; for example, do not prefer `Captain Aria`
+over `Aria` solely because it includes the contextual title `Captain`. Do not
+invent, edit, or combine display names.