Worked on the wevm/viem repository to enhance WalletConnect session stability by addressing a specific error scenario. Focused on implementing targeted error handling for the SESSION_SETTLEMENT_FAILED error (code 7000), the developer introduced a custom WalletConnectSessionSettlementError to classify this as a non-retryable error, thereby preventing unnecessary retry attempts and improving workflow reliability. The solution involved updating TypeScript modules such as buildRequest and fallback to enforce the new error handling logic. Comprehensive unit tests were added and existing tests updated to ensure robust coverage of the new behavior, demonstrating a methodical approach to error handling and TypeScript-based backend development.