Finish the D&D audit fixes

docs/internal/llm.md

@@ -111,7 +111,10 @@ messages before its task and instructions. Identity, transcript, and
 campaign-reference messages are ephemeral in the extraction prompts; the scene
 prompt marks transcript and campaign references ephemeral, and the NPC registry
 is ephemeral where spell and combat prompts use it. Unused shared assets are
-neither mounted nor fingerprinted.
+neither mounted nor fingerprinted. Universal extraction-evidence and output
+policy lives only in the shared extraction assets; package-owned prompt files
+retain artifact-specific rules. The scene prompt keeps its separate output rule
+because it does not render the extraction-evidence asset.
 
 Schema helpers load embedded JSON Schema with identity and digest metadata,
 return defensive copies, and expose a diagnostics map that omits schema bytes.