feat(hbar): add stakedAccountId support to AccountUpdateBuilder#8948
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Add account-level indirect staking support to the HBAR AccountUpdateBuilder. This enables staking to another account (not just consensus nodes) via the CryptoUpdateTransactionBody protobuf's oneof staked_id field. Changes: - Add stakedAccountId field and method to AccountUpdateBuilder - Update initBuilder to read stakedAccountId from proto using oneOf discriminator - Update buildImplementation to set stakedAccountId on proto - Update validateMandatoryFields to require either stakedNodeId OR stakedAccountId (mutually exclusive) - Update transaction getAccountUpdateData to extract stakedAccountId from proto - Add stakedAccountId to AccountUpdateInstruction interface - Add tests for stake-to-account, unstake sentinel (0.0.0), mutual exclusivity, round-trip serialization Ticket: SI-768
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joshisakshi
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Jun 5, 2026
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Summary
stakedAccountIdsupport to HBARAccountUpdateBuilderfor account-level indirect staking (Phase 2)oneof staked_idfield -- settingstakedAccountIdauto-clearsstakedNodeIdand vice versastakedNodeIdorstakedAccountIdmust be set0.0.0clears account staking (parallels-1for node unstaking)Changes
accountUpdateBuilder.ts: NewstakedAccountId()method, updatedinitBuilder/buildImplementation/validateMandatoryFieldsiface.ts: AddedstakedAccountIdtoAccountUpdateInstructioninterfacetransaction.ts: UpdatedgetAccountUpdateData()to extractstakedAccountIdusing oneOf discriminatoraccountUpdateBuilder.ts(test): 7 new tests covering stake-to-account, unstake sentinel, mutual exclusivity, round-tripTest plan
Ticket: SI-768