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Introduces a modular SDK for building multi-party contracts on ARK protocol: SDK (packages/sdk/): - Core: Generic ScriptBuilder for m-of-n Taproot scripts - Contracts: State machine with guards and transitions - Transactions: SigningCoordinator for multi-party signing - Storage: Pluggable adapter interface with memory implementation - Protocol: Provider interfaces for blockchain interaction - Modules: Escrow and Lending contract implementations Server integration: - VEscrow.Script now uses SDK ScriptBuilder internally - Signature utilities re-export from SDK - EscrowStateMachineGuard validates state transitions - ExecutionCoordinator tracks multi-party signing - DTOs include sdkState, allowedActions, balance fields - ArbitrationService uses SDK for dispute validation - TypeOrmStorageAdapter bridges SDK with existing entities This enables: - Flexible contract configurations (not just 2-of-3) - Consistent state machine validation - Reusable primitives for lending, gambling, etc.
- Add refresh module with types, flows, and delegate executor - SimpleRefreshFlow for single-user (direct batch join) - DelegatedRefreshFlow for multi-party (ACP-signed forfeits) - DelegateExecutor and DelegateService for batch joining - Update escrow module with refresh support: - EscrowRefreshConfig with delegatePolicy options - EscrowContract.getRefreshFlow() method - createRefreshPath() for spending path generation - Two delegation models supported: - Existing party as delegate (escrow: any of sender/receiver/arbiter) - External delegate (additional key in script)
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Introduces a modular SDK for building multi-party contracts on ARK protocol:
SDK (packages/sdk/):
Server integration:
This enables: