Fix: SVG Icons mit expliziter weißer Stroke-Farbe

- stroke="currentColor" durch stroke="#ffffff" ersetzt
- Icons sind jetzt garantiert sichtbar

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

dev-dist/sw.js

@@ -85,7 +85,7 @@ define(['./workbox-6f774a69'], (function (workbox) { 'use strict';
     "revision": "3ca0b8505b4bec776b69afdba2768812"
   }, {
     "url": "index.html",
-    "revision": "0.4r61criari8"
+    "revision": "0.ehkslekrth"
   }], {});
   workbox.cleanupOutdatedCaches();
   workbox.registerRoute(new workbox.NavigationRoute(workbox.createHandlerBoundToURL("index.html"), {