Adopt registry-backed NPC occurrence artifacts

assets/dnd/npc-interactions/prompts/instructions.md

@@ -1,7 +1,8 @@
 Extract Dungeons & Dragons NPC interaction occurrences from the supplied
 transcript. Include an occurrence only when the transcript establishes one
 supplied NPC, one interaction kind, and a coherent passage supporting both.
-Use only names from the supplied NPC registry.
+Use the exact `npc_id` and matching `name` pair from the supplied NPC registry;
+never invent an ID or substitute a similar name.
 
 Do not summarize, infer relationships, sentiment, factions, motives, aliases,
 or persistent state. Do not identify player characters, anonymous groups, or

assets/dnd/npc-interactions/prompts/prompt.yaml

@@ -41,5 +41,5 @@ messages:
 output:
   format: json
   validation_mode: json_schema
-  schema_path: dnd_npc_interactions_llm.v1.json
+  schema_path: dnd_npc_occurrences_llm.v1.json
   repair_attempts: 0

assets/dnd/npc-interactions/schemas/dnd_npc_occurrences_llm.v1.json

@@ -1,17 +1,20 @@
 {
   "$schema": "https://json-schema.org/draft/2020-12/schema",
-  "$id": "notarius.dnd.npc_interactions.llm",
+  "$id": "notarius.dnd.npc_occurrences.llm",
   "type": "object",
   "additionalProperties": false,
-  "required": ["interactions"],
+  "required": ["occurrences"],
   "properties": {
-    "interactions": {
+    "occurrences": {
       "type": "array",
       "items": {
         "type": "object",
         "additionalProperties": false,
-        "required": ["name", "kind", "source_refs"],
+        "required": ["npc_id", "name", "kind", "source_refs"],
         "properties": {
+          "npc_id": {
+            "type": "string"
+          },
           "name": {
             "type": "string"
           },