codex model really bad too read. so many code in one file. so many varaince. no consistent solution

codex model really bad too read. so many code in one file. so many varaince. no consistent solution

• src/ui/mod.rs → 4,211 lines
• src/predictor/mod.rs → 3,528 lines
• src/backtest/core.rs → 2,668 lines
• src/main.rs → 2,566 lines
• src/bin/etl_pipeline.rs → 1,987 lines
• src/order_manager.rs → 1,786 lines
• src/binance/rest.rs → 1,638 lines
• src/bin/backtest_tui.rs → 1,180 lines

look at that obvious codex did not well refactoring. and make good readble code