Adjust the prompt FS layout and test strategy

internal/modules/chunk/dnd/scenes/assets/prompts/dnd.scenes.yaml

@@ -5,7 +5,10 @@ inputs:
   - name: transcript
     required: true
     content_type: application/json
-  - name: roster
+  - name: players
+    required: false
+    content_type: text/plain
+  - name: party
     required: false
     content_type: text/plain
   - name: glossary
@@ -13,13 +16,13 @@ inputs:
     content_type: text/plain
 messages:
   - role: system
-    content_file: ./common-dnd-system.md
+    content_file: ./sharedassets/common-dnd-system.md
   - role: user
-    content_file: ./common-dnd-transcript.md
+    content_file: ./sharedassets/common-dnd-transcript.md
     cache_control:
       type: ephemeral
   - role: user
-    content_file: ./common-dnd-references.md
+    content_file: ./sharedassets/common-dnd-references.md
     cache_control:
       type: ephemeral
   - role: user