feat: port wallet charge/withdraw modal from tauri to patient admin page

Add manual wallet withdrawal (debit) endpoint mirroring the offline app's
balance guard, and rebuild the patient کیف پول tab around a single
charge/withdraw toggle modal (quick amounts, تومان→ریال conversion,
transaction filters).

Backend:
- POST /api/v1/patient/{uuid}/wallet/withdraw — creates a debit
  WalletTransaction; 422 ERR_WALLET_INSUFFICIENT when amount exceeds balance.
- ErrorCodes: ERR_WALLET_INSUFFICIENT ('موجودی کیف پول کافی نیست').
- docs/api/patient.md updated.

Frontend:
- usePatientWallet hook (balance + charge/withdraw mutations).
- WalletTransactionModal (toggle, quick amounts, UI-only payment fields).
- WalletTab: charge button, همه/واریزی/برداشت filters.

Tests: backend withdraw success/insufficient/non-positive/ownership;
frontend modal + wallet tab interactions.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

assets/admin/hooks/usePatientWallet.ts

@@ -0,0 +1,58 @@
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
+import { api } from '../lib/api';
+import type { ApiResponse } from '../lib/api';
+
+export interface WalletTxn {
+  uuid: string;
+  amount_rials: number;
+  type: 'credit' | 'debit' | string;
+  description?: string | null;
+  balance_after: number;
+  created_at: number;
+}
+
+interface WalletData {
+  balance_rials: number;
+  recent_transactions: WalletTxn[];
+}
+
+export interface WalletTxnInput {
+  amount_rials: number;
+  description?: string;
+}
+
+/**
+ * کیف پول بیمار: موجودی + تراکنش‌های اخیر، و mutationهای شارژ (credit) و برداشت (debit).
+ * منبع: GET /api/v1/patient/{uuid}/wallet و POST .../wallet/{charge|withdraw}.
+ * کلید کوئری: ['patient-wallet', uuid]؛ پس از هر mutation موفق invalidate می‌شود.
+ */
+export function usePatientWallet(uuid: string | undefined) {
+  const qc = useQueryClient();
+  const queryKey = ['patient-wallet', uuid];
+
+  const query = useQuery<ApiResponse<WalletData>>({
+    queryKey,
+    queryFn: () => api.get(`/api/v1/patient/${uuid}/wallet`),
+    enabled: !!uuid,
+  });
+
+  const invalidate = () => qc.invalidateQueries({ queryKey });
+
+  const charge = useMutation<ApiResponse<unknown>, unknown, WalletTxnInput>({
+    mutationFn: (body) => api.post(`/api/v1/patient/${uuid}/wallet/charge`, body),
+    onSuccess: invalidate,
+  });
+
+  const withdraw = useMutation<ApiResponse<unknown>, unknown, WalletTxnInput>({
+    mutationFn: (body) => api.post(`/api/v1/patient/${uuid}/wallet/withdraw`, body),
+    onSuccess: invalidate,
+  });
+
+  return {
+    balanceRials: query.data?.data?.balance_rials ?? 0,
+    transactions: query.data?.data?.recent_transactions ?? [],
+    isLoading: query.isLoading,
+    charge,
+    withdraw,
+  };
+}