- Add await to all config-dependent methods (getConfig, getAllCollateralTypes,
  getUsdbCoinType, getAggregatorObjectInfo, getVaultObjectInfo, etc.)
- Add await to build methods (buildClosePositionTransaction,
  buildDepositToSavingPoolTransaction, buildWithdrawFromSavingPoolTransaction,
  buildClaimSavingRewardsTransaction, flashMint, flashBurn)
- Add await to CDP helpers (debtorRequest, checkUpdatePositionRequest,
  updatePosition, checkUpdatePositionResponse, newAccountRequest)
- Document sync constructor as alternative to initialize()
- Update API Reference section for new constructor signature

Made-with: Cursor