Task 7

Enter a ticker. We resolve its sector ETF (from the SEC SIC code, falling back to the S&P 500) and compute a relative-strength series — the stock's price ÷ the sector's — strictly as-of the most recent close. An LLM picks one strategy from a fixed RS menu (RS uptrend / breakout / momentum), then a lookahead-free backtest holds the stock long/flat, with RS deciding only when to be long — tested vs buy-and-hold and the S&P 500.