// FIREBASE SETUP

This tracker uses Firebase to sync data across all users in real-time. You only need to do this once — your config is saved in the browser forever after.

Step 1 — Go to console.firebase.google.com, create a project, then open Realtime Database → Create database → Start in test mode.
Step 2 — Go to Project Settings ⚙ → Your apps → click </> (web) → register app → copy the config values below.
Step 3 — Under Realtime Database → Rules, set both read and write to true and Publish. (For team use, test mode is fine.)

Config is saved locally. Share this HTML file with your team — they'll enter config once too.