This app needs your Firebase keys before it can run.
1. In the Firebase console, create a project, then add a Web app.
2. Copy its config object (the apiKey, projectId, …).
3. Open index.html, find window.FIREBASE_CONFIG near the bottom, paste your values, save, and reload.
4. Enable Authentication → Email/Password and create a Firestore database, then paste in the security rules from firestore.rules.
Full step-by-step is in README.md.
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