fix: Handle server response for mining areas; ensure areas state is set correctly for non-array responses

client/src/components/MiningAreasPanel.jsx

@@ -28,7 +28,8 @@ export default function MiningAreasPanel({ turtles, selectedTurtle, apiUrl }) {
       const response = await fetch(`${apiUrl}/api/mining-areas`);
       if (response.ok) {
         const data = await response.json();
-        setAreas(data);
+        // Server returns a flat array of formatted areas
+        setAreas(Array.isArray(data) ? data : (data.areas || []));
       }
     } catch (error) {
       console.error('Failed to load mining areas:', error);