Ravisail/Pttt ? reverse-engineered prompt

Build me a Python trading toolkit that can scan stocks for a few simple setups, like bullish pullbacks, swing entries, and EMA based signals, then backtest those ideas on historical data.

I want it organized so I can run different scripts for different tasks, like a scanner, a backtester, and a small app for checking results. Make it easy to change the ticker, timeframe, and strategy settings without digging through a lot of code. If you need current library docs or API details, look them up online and keep the code working with up to date versions.

Please include clear console output, save useful results to files, and make the code reasonably clean so I can reuse pieces later. If there are any missing pieces or assumptions, choose sensible defaults and get something working end to end rather than making it overly complex.