curl -X POST "https://demo.api.vultlocal.com/api/v1/agents/transfer" \
  -H "Authorization: Bearer olive_live_xxx" \
  -H "Content-Type: application/json" \
  -d '{
    "from_agent_id": "agent_abc123",
    "to_agent_id": "agent_xyz789",
    "amount": "100000.00",
    "pin": "1234",
    "description": "Daily float allocation"
  }'

{
  "success": true,
  "message": "Float transferred successfully",
  "transaction_id": "txn_transfer_abc123",
  "amount": "100,000.00 SLE",
  "from_balance": "1,400,000.00 SLE",
  "to_balance": "600,000.00 SLE"
}

{
  "success": false,
  "error": "Insufficient float balance",
  "code": "INSUFFICIENT_FLOAT",
  "available": 50000,
  "required": 100000
}

{
  "error": "Target agent is not your sub-agent",
  "code": "FORBIDDEN"
}