April 2026: Delivered a major maintainability refactor to the Dex module by centralizing base_trades logic into a reusable macro and migrating 51 chain-specific files to macro calls. The dex_base_trades_macro standardizes core behavior while supporting known deviations for ethereum, tron, and hyperevm, and normalizes model naming for plasma and xlayer. This reduces duplication, simplifies future enhancements, and lowers defect risk across multiple chains. CI testing was optimized by gating with a dev_dates flag to accelerate regression validation (to be reverted before merge). No critical bugs were reported; the work increases long-term velocity for adding new chains and features. Technologies demonstrated include SQL macro design, cross-chain modularization, and CI optimization.