limex-com/ziplime — reverse-engineered prompt

Build me a modern Python backtesting tool like the README describes, where I can either write a strategy in Python or just type it in plain English and have the app generate the strategy, pull the needed historical market data automatically, run the backtest locally, and show me the results with useful performance stats and a tearsheet.

I want it to feel like a rebuilt Zipline experience, but faster and current, with support for different timeframes, common OHLCV data, and optional fundamentals if available. Please include a simple AI assistant flow that uses an API key, keeps everything local except the model call, and can handle examples like moving average crossover or RSI on AAPL. It should also support running the same strategy file in backtest mode and live mode, with Yahoo Finance and CSV as data sources, and Lime Trader if that part is available here.

Please make it runnable end to end, with a clean quick start, examples, and tests. If you need details, check the current docs online.