Fix Node.js test runner with CommonJS exports

js/decoder.js

@@ -620,3 +620,8 @@ function getModifierString(modifiers) {
 
     return key;
 }
+
+// Export for Node.js (CommonJS)
+if (typeof module !== 'undefined' && module.exports) {
+    module.exports = { decodeDragonCode };
+}

js/parser.js

@@ -736,3 +736,8 @@ function parseTechnology(token) {
 
     return result;
 }
+
+// Export for Node.js (CommonJS)
+if (typeof module !== 'undefined' && module.exports) {
+    module.exports = { parseDragonCode };
+}

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 };
+}

js/tags-data.js

@@ -406,3 +406,8 @@ const TAG_DESCRIPTIONS = {
         '---!': "Cold fury - they're going to hunt you, and find you, and..."
     }
 };
+
+// Export for Node.js (CommonJS)
+if (typeof module !== 'undefined' && module.exports) {
+    module.exports = { TAG_DESCRIPTIONS };
+}