The catalogue is public to read and locked to write. Only this account can publish changes.
Orders from the shop page arrive on this number.
Kept on this device only.
Paste these into Firebase console → Realtime Database → Rules. Anyone may read the catalogue; only the signed-in admin may change it.
Photos are stored on this phone, so the sheet works with no signal. Do this once.
Pulls the current names and prices. Use the same address the shop page uses — it is saved on this phone.