🔧 Firebase Setup Required
To use this app across devices, you need to set up Firebase first:
1. Go to console.firebase.google.com
2. Create a new project (free)
3. Enable Realtime Database
4. Set security rules to: { "rules": { ".read": true, ".write": true } }
5. Copy your config and replace the placeholder below:
// Replace this placeholder config with your Firebase config:
const firebaseConfig = {
apiKey: "your-api-key",
authDomain: "your-project.firebaseapp.com",
databaseURL: "https://your-project-default-rtdb.firebaseio.com/",
projectId: "your-project",
storageBucket: "your-project.appspot.com",
messagingSenderId: "123456789",
appId: "your-app-id"
};