Update D&D prompt definitions to shallow asset paths

internal/modules/extract/dnd/spells/scriptorium_assets.go

@@ -3,6 +3,7 @@ package spells
 import (
 	"bytes"
 	"fmt"
+	"io/fs"
 	"sort"
 	"sync"
 
@@ -14,7 +15,11 @@ import (
 const scriptoriumPromptRoot = "assets/prompts"
 
 func RegisterPromptAssets(registry *llm.AssetRegistry) error {
-	promptFS, err := modulePromptFS()
+	sharedPromptFS, err := promptSharedFS()
+	if err != nil {
+		return fmt.Errorf("prepare shared prompt assets: %w", err)
+	}
+	promptFS, err := modulePromptFS(sharedPromptFS)
 	if err != nil {
 		return fmt.Errorf("prepare spell prompt assets: %w", err)
 	}
@@ -24,6 +29,14 @@ func RegisterPromptAssets(registry *llm.AssetRegistry) error {
 	return registry.RegisterSchemaFS(embeddedAssets, "assets/schemas")
 }
 
+func promptSharedFS() (fs.FS, error) {
+	registry := llm.NewAssetRegistry()
+	if err := sharedassets.Register(registry); err != nil {
+		return nil, err
+	}
+	return registry.PromptFS()
+}
+
 func promptInputs(req contracts.ExtractionRequest) contracts.LLMInputSet {
 	return contracts.LLMInputSet{
 		"transcript": transcriptPromptInput(req.SourceInput),