To enable Gmail login and cloud save, you need a free Firebase project. Takes ~5 minutes.
Visit console.firebase.google.com → click Add project → name it "FrameForge" → click through the setup.
In your project → Authentication → Get started → enable Google and Email/Password sign-in methods.
In your project → Firestore Database → Create database → choose Start in test mode → select a region → Done.
Go to Project Settings (⚙️ icon) → Your apps → click </> (Web) → Register the app → copy the firebaseConfig object.
After adding your config, save the file and reload it in your browser.
Firebase free tier (Spark) is plenty for personal use — no credit card needed.