Fix Node.js test runner with CommonJS exports

js/species-data.js

@@ -247,3 +247,8 @@ function resolveSpeciesCode(code) {
     // Return the accumulated path or the name if we have it
     return path.length > 0 ? path[path.length - 1] : null;
 }
+
+// Export for Node.js (CommonJS)
+if (typeof module !== 'undefined' && module.exports) {
+    module.exports = { SPECIES_DATA, resolveSpeciesCode };
+}