feat(sdk-core): implement EdDSA MPCv2 external signer orchestrator#8744
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Implement signEddsaMPCv2TssUsingExternalSigner in EddsaMPCv2Utils, replacing the stub in baseTSSUtils. Also wire up the wallet.ts dispatch block and private signTransactionTssExternalSignerEdDSAMPCv2 method so the calling code and implementation land together. - EddsaMPCv2Utils.signEddsaMPCv2TssUsingExternalSigner: full 3-round orchestration using caller-supplied generator functions, pickBitgo- PubGpgKeyForSigning with isEddsaMpcv2=true, and armored BitGo GPG key passed to round 2/3 generators. Asserts signatureShares after round 2, mirrors ECDSA counterpart. - wallet.ts: adds dispatch block for customEddsaMPCv2Signing* params before existing ECDSA MPCv2 block; adds private signTransactionTssExternalSignerEdDSAMPCv2 method. - Unit tests: 5 cases covering happy path, string txRequestId resolution, missing round-2 signatureShares assert, message-signing rejection, and armored key delivery to generators. Ticket: WCI-374 Co-Authored-By: Claude Opus 4.7 <[email protected]> Session-Id: 68742945-d54f-4fb6-a866-47a802ad253e Task-Id: bb6a6972-cbe9-43f2-a9c3-74eefc045a44
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Summary
signEddsaMPCv2TssUsingExternalSignerinEddsaMPCv2Utils, replacing the stub inbaseTSSUtils. Full 3-round orchestration using caller-supplied generator functions, withpickBitgoPubGpgKeyForSigning(isEddsaMpcv2=true)and armored BitGo GPG key passed to round 2/3 generators.wallet.tssignTransactionforcustomEddsaMPCv2Signing*params (placed before existing ECDSA MPCv2 block), plus privatesignTransactionTssExternalSignerEdDSAMPCv2method.Depends on: WCI-373 (types + stub — already merged)
Scope: WCI-165
Test plan
modules/sdk-core/test/unit/bitgo/utils/tss/eddsa/eddsaMPCv2Utils.tscover the 5 cases listed aboveyarn unit-test --scope @bitgo/sdk-corepasses in CIcustomEddsaMPCv2Signing*functions route tosignTransactionTssExternalSignerEdDSAMPCv2, not the ECDSA pathTicket: WCI-374
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