Demo mode: PayPal calls go to a built-in mock that returns the same JSON shapes as the PayPal sandbox (Invoicing v2, Orders v2, Payouts v1). No real money and no PayPal account are involved. This GitHub Pages copy runs entirely in your browser; clone the repo and add sandbox keys to call the real PayPal sandbox.
Family chat
This month
Needs a sibling's OK
The agent proposes. People approve. Then PayPal moves the money.
