feat(billing): patient payments list + patient invoices detail (doctor/clinic)

Port two nobat724 Figma screens into the admin SPA for the doctor/clinic
tenant panel:

- node 1 — لیست پرداخت‌ها (/admin/my-payments): per-patient payment summary
  (invoice count, paid, remaining, derived status paid/unsettled/unpaid),
  filters by national code / status / Jalali date range, pagination.
- node 2 — پرداخت‌های ثبت‌شده (/admin/my-payments/:patientUuid): a patient's
  recorded invoices with patient header, service title, total, status badge,
  and an expandable per-invoice item breakdown.

Backend (App\Billing):
- InvoiceRepository::patientPaymentSummary/countPatientPaymentSummary — DQL
  aggregation grouped by patient record (arbitrary join Invoice→PatientRecord
  →User), draft/void excluded, derived-status HAVING filters.
- InvoiceRepository::invoicesForPatient/count + InvoiceService methods that
  shape rows and derive status.
- BillingController: GET /api/v1/my/billing/patient-payments and
  GET /api/v1/my/billing/patients/{patientUuid}/invoices (thin, resolveEntity,
  tenant-scoped, 403/404). Invoice::getIssuedAt / InvoiceItem::getTitle added.
- docs/api/billing.md documents both endpoints.

Frontend: useMyPayments hooks, MyPaymentsPage, MyPaymentDetailPage, routes in
App.tsx (doctor/secretary/clinic, blockClinicScope) and a sidebar entry.
Persian strings hardcoded per existing admin convention (no i18n infra).

Tests: tests/Billing/PatientPaymentsTest.php (8), useMyPayments + both page
tests (11). Note: pre-existing LoginPage.test failures are unrelated (proven
by stashing this change).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

assets/admin/hooks/useMyPayments.test.tsx

@@ -0,0 +1,57 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { renderHook, waitFor } from '@testing-library/react';
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
+import React from 'react';
+
+vi.mock('../lib/api', () => ({
+  api: { get: vi.fn() },
+  ApiError: class extends Error {},
+}));
+
+import { api } from '../lib/api';
+import { usePatientPayments, usePatientInvoices } from './useMyPayments';
+
+const get = api.get as ReturnType<typeof vi.fn>;
+
+function wrapper({ children }: { children: React.ReactNode }) {
+  const qc = new QueryClient({ defaultOptions: { queries: { retry: false } } });
+  return <QueryClientProvider client={qc}>{children}</QueryClientProvider>;
+}
+
+beforeEach(() => {
+  get.mockReset();
+  get.mockResolvedValue({ success: true, data: [], meta: { totalRecords: 0, totalPages: 0, currentPage: 1 } });
+});
+
+describe('useMyPayments', () => {
+  it('builds the list URL with all active filters', async () => {
+    renderHook(() => usePatientPayments({ page: 2, national_code: '1744', status: 'paid', from: 100, to: 200 }), { wrapper });
+    await waitFor(() => expect(get).toHaveBeenCalled());
+    const url = get.mock.calls[0][0] as string;
+    expect(url).toContain('/api/v1/my/billing/patient-payments?');
+    expect(url).toContain('page=2');
+    expect(url).toContain('national_code=1744');
+    expect(url).toContain('status=paid');
+    expect(url).toContain('from=100');
+    expect(url).toContain('to=200');
+  });
+
+  it('omits empty filters from the list URL', async () => {
+    renderHook(() => usePatientPayments({ page: 1 }), { wrapper });
+    await waitFor(() => expect(get).toHaveBeenCalled());
+    const url = get.mock.calls[0][0] as string;
+    expect(url).not.toContain('national_code=');
+    expect(url).not.toContain('status=');
+  });
+
+  it('does not fetch invoices until a patient uuid is provided', async () => {
+    const { rerender } = renderHook(({ uuid }: { uuid?: string }) => usePatientInvoices(uuid, 1), {
+      wrapper, initialProps: { uuid: undefined as string | undefined },
+    });
+    expect(get).not.toHaveBeenCalled();
+
+    rerender({ uuid: 'abc' });
+    await waitFor(() => expect(get).toHaveBeenCalled());
+    expect(get.mock.calls[0][0]).toContain('/api/v1/my/billing/patients/abc/invoices');
+  });
+});