feat(billing): guide parents to recharge the child account

tests/unit/works-billing-server-contract.test.ts

@@ -6,7 +6,7 @@ import server from '../fixtures/permanent-points-server.json';
 // an isolated SQLite database and a fake payment provider. All identities are synthetic.
 // Covers the real API's serialized decimals, timestamps, optional fields and order envelopes.
 describe('Works Square permanent-points API compatibility', () => {
-  it('projects old accounts at zero and genuinely registered youth at 100, without a client gift', () => {
+  it('projects balance and recharge permission from the captured pre-D01 server response without a client gift', () => {
     expect(projectBillingSummary(server.before).own_points.total_remaining).toBe('0.00');
     const youth = projectBillingSummary(server.youth);
     expect(youth.own_points.total_remaining).toBe('100.00');