Standardize D&D prompt asset filenames

assets/dnd/enemy-events/prompts/prompt.yaml

@@ -41,7 +41,7 @@ messages:
   - role: user
     content_file: ./sharedassets/common-dnd-npcs.md
   - role: user
-    content_file: ./grounding.md
+    content_file: ./combat-grounding.md
   - role: user
     content_file: ./task.md
   - role: user

assets/dnd/location-occurrences/prompts/prompt.yaml

@@ -33,7 +33,7 @@ messages:
   - role: user
     content_file: ./sharedassets/common-dnd-extraction-evidence.md
   - role: user
-    content_file: ./locations.md
+    content_file: ./location-registry.md
   - role: user
     content_file: ./task.md
   - role: user

assets/dnd/spells/prompts/prompt.yaml

@@ -38,7 +38,7 @@ messages:
   - role: user
     content_file: ./sharedassets/common-dnd-npcs.md
   - role: user
-    content_file: ./catalog.md
+    content_file: ./spell-catalog.md
   - role: user
     content_file: ./task.md
   - role: user