style: Update API fetch URL to use dynamic origin for improved flexibility

client/src/components/Map3D.jsx

@@ -1160,7 +1160,7 @@ function Scene({ interactionMode, onInteraction }) {
   useEffect(() => {
     const fetchMiningAreas = async () => {
       try {
-        const response = await fetch('http://localhost:3001/api/mining-areas');
+        const response = await fetch(`${window.location.origin}/api/mining-areas`);
         if (response.ok) {
           const data = await response.json();
           setMiningAreas(data);