curl -X GET https://kube.acho.io/service/general-ledger/bills/BILL-2024-001 \
  -H "Authorization: jwt YOUR_TOKEN"

{
  "bill_id": "BILL-2024-001",
  "vendor_id": "a3-vendor-xxx",
  "vendor_name": "Office Supplies Inc",
  "ap_account_id": "a3-ap-account-xxx",
  "tran_date": "2024-01-15",
  "due_date": "2024-02-15",
  "currency": "USD",
  "exchange_rate": 1.0,
  "memo": "Office supplies invoice",
  "status": "Posted",
  "posting_period_id": "a3-period-xxx",
  "posting_period_name": "January 2024",
  "subtotal": 500,
  "tax_total": 50,
  "total": 550,
  "amount_paid": 0,
  "amount_due": 550,
  "is_overdue": false,
  "days_until_due": 15,
  "lines": [
    {
      "line_number": 1,
      "account_id": "a3-expense-xxx",
      "account_name": "Office Supplies Expense",
      "description": "Office supplies",
      "quantity": 10,
      "rate": 50,
      "amount": 500,
      "tax_rate": 0.1,
      "tax_amount": 50
    }
  ],
  "payments": [],
  "approval_history": [
    {
      "action": "Submit for Approval",
      "performed_by": "user_123",
      "performed_at": "2024-01-15T11:00:00Z"
    },
    {
      "action": "Approve",
      "performed_by": "user_456",
      "performed_at": "2024-01-15T14:00:00Z",
      "comments": "Approved - invoice verified against PO"
    }
  ],
  "created_at": "2024-01-15T10:00:00Z",
  "created_by": "user_123",
  "posted_at": "2024-01-15T14:00:00Z"
}