chore: v4.3.0

[jaime-iobermudez]

This pull request introduces support for custom Hedera networks by allowing consensus node configuration, along with several related backend improvements and minor documentation updates. The changes include new DTO fields and validation, database schema adjustments, a utility for client instantiation with custom nodes, and updates to tests and documentation.

Custom Network and Consensus Node Support

• Added a CUSTOM value to the Network enum, and introduced a consensus_nodes field (with validation) to the CreateTransactionRequestDto and GetTransactionsResponseDto classes to support custom network configurations. [1] [2] [3] [4] [5] [6] [7] [8]
• Modified the Transaction entity to store the network as a string and added a nullable consensus_nodes JSONB column.

Backend Service and Utility Enhancements

• Added a new buildHederaClient utility to instantiate a Hedera client for standard or custom networks using the consensus node list, and refactored service logic in transaction.service.ts and autoSubmit.service.ts to use this utility. [1] [2] [3] [4] [5]
• Updated service and controller logic to pass and handle the new consensus_nodes field throughout the transaction lifecycle. [1] [2] [3] [4] [5] [6] [7] [8] [9]

DevOps and CI Improvements

• Improved the GitHub Actions workflow in .github/actions/create-env-file/action.yaml to log API response statuses and redact sensitive fields from logs. [1] [2]
• Added new environment variables for AWS KMS Hedera accounts in the workflow.

Documentation and Miscellaneous Updates

• Updated the README.md to clarify npm installation steps and correct the contracts environment sample file reference. [1] [2]
• Incremented the backend package version and improved npm scripts for cleaning and test reliability. [1] [2]

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