diff --git a/package-lock.json b/package-lock.json
index 1920e29..ac78d07 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "oikos",
-  "version": "1.0.0",
+  "version": "0.3.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "oikos",
-      "version": "1.0.0",
+      "version": "0.3.0",
       "license": "MIT",
       "dependencies": {
         "bcrypt": "^5.1.1",
diff --git a/package.json b/package.json
index 26acd58..6760a40 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "test:calendar": "node --experimental-sqlite test-calendar.js",
     "test:ncb": "node --experimental-sqlite test-notes-contacts-budget.js",
     "test:ux-utils": "node test-ux-utils.js",
-    "test:modal-utils": "node test-modal-utils.js",
+    "test:modal-utils": "node --loader ./test-browser-loader.mjs test-modal-utils.js",
     "test": "node --experimental-sqlite test-db.js && node --experimental-sqlite test-dashboard.js && node --experimental-sqlite test-tasks.js && node --experimental-sqlite test-shopping.js && node --experimental-sqlite test-meals.js && node --experimental-sqlite test-calendar.js && node --experimental-sqlite test-notes-contacts-budget.js && npm run test:ux-utils && npm run test:modal-utils"
   },
   "dependencies": {
diff --git a/test-browser-loader.mjs b/test-browser-loader.mjs
new file mode 100644
index 0000000..c373a18
--- /dev/null
+++ b/test-browser-loader.mjs
@@ -0,0 +1,29 @@
+/**
+ * test-browser-loader.mjs — Node.js Custom Loader für Tests
+ * Zweck: Browser-absolute Pfade (/foo.js) auf Stubs umleiten, damit
+ *        Frontend-Module im Node-Test-Kontext importierbar sind.
+ * Verwendung: node --loader ./test-browser-loader.mjs test-xxx.js
+ * Dependencies: none
+ */
+
+const STUBS = {
+  '/i18n.js': `
+    export const t = (key) => key;
+    export const initI18n = async () => {};
+    export const setLocale = async () => {};
+    export const getLocale = () => 'de';
+    export const getSupportedLocales = () => ['de', 'en'];
+    export const formatDate = (d) => String(d);
+    export const formatTime = (d) => String(d);
+  `,
+};
+
+export async function resolve(specifier, context, nextResolve) {
+  if (STUBS[specifier]) {
+    return {
+      shortCircuit: true,
+      url: `data:text/javascript,${encodeURIComponent(STUBS[specifier])}`,
+    };
+  }
+  return nextResolve(specifier, context);
+}
diff --git a/test-modal-utils.js b/test-modal-utils.js
index 898c86c..79ab0b1 100644
--- a/test-modal-utils.js
+++ b/test-modal-utils.js
@@ -7,6 +7,7 @@
 import { test } from 'node:test';
 import assert from 'node:assert/strict';
 
+// /i18n.js wird durch test-browser-loader.mjs gemockt (--loader Flag)
 const { wireBlurValidation, btnSuccess, btnError } = await import('./public/components/modal.js');
 
 const _origSetTimeout = setTimeout;