Integrate Google Maps provider: update map components to use Google Maps, add API key configuration in app.json, and ensure consistent map rendering across screens.

app.json

@@ -16,6 +16,9 @@
       "supportsTablet": true,
       "infoPlist": {
         "NSLocationWhenInUseUsageDescription": "This app needs your location for the treasure hunt."
+      },
+      "config": {
+        "googleMapsApiKey": "AIzaSyA-G0tSzzcM5z6HyI23s8dzKDLCOrekhbw"
       }
     },
     "android": {
@@ -41,6 +44,14 @@
       "eas": {
         "projectId": "c65a2849-f05d-48ef-9e36-950caa214a7d"
       }
-    }
+    },
+    "plugins": [
+      [
+        "react-native-maps",
+        {
+          "googleMapsApiKey": "AIzaSyA-G0tSzzcM5z6HyI23s8dzKDLCOrekhbw"
+        }
+      ]
+    ]
   }
 }