Add run manifest and logical output file contracts

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

@@ -92,6 +92,30 @@ func TestExtractReturnsSpellCandidateFromStructuredOutput(t *testing.T) {
 	}
 }
 
+func TestExtractorManifestMetadataIncludesPromptAndSchemaProvenance(t *testing.T) {
+	metadata := New().ManifestMetadata()
+
+	tests := map[string]string{
+		"prompt_id":               PromptID,
+		"prompt_version":          SchemaVersion,
+		"response_schema_key":     string(ResponseSchemaKey),
+		"response_schema_id":      ResponseSchemaID,
+		"response_schema_name":    ResponseSchemaName,
+		"response_schema_version": SchemaVersion,
+	}
+	for key, want := range tests {
+		if metadata[key] != want {
+			t.Fatalf("metadata[%q] = %#v, want %q", key, metadata[key], want)
+		}
+	}
+	for _, key := range []string{"prompt_sha256", "response_schema_sha256"} {
+		value, ok := metadata[key].(string)
+		if !ok || !strings.HasPrefix(value, "sha256:") {
+			t.Fatalf("metadata[%q] = %#v, want sha256 value", key, metadata[key])
+		}
+	}
+}
+
 func TestExtractReturnsNoCandidatesForEmptyResponse(t *testing.T) {
 	client := &fakeSpellsLLMClient{response: extractionResponse{SpellCasts: []spellCastResponse{}}}