Enhance usability and localization across components: Update USABILITY_CONCEPT.md with new focus areas, improve user feedback in AppFooter and FamilyView components, and refine text in various UI elements for better clarity and consistency. Replace console logs with user-friendly messages, correct German translations, and streamline interaction logic in multiple components.

frontend/src/utils/threeModelRuntime.js

@@ -0,0 +1,9 @@
+import { AnimationMixer } from 'three/src/animation/AnimationMixer.js';
+import { Box3 } from 'three/src/math/Box3.js';
+import { Vector3 } from 'three/src/math/Vector3.js';
+
+export {
+  AnimationMixer,
+  Box3,
+  Vector3
+};