longbridge-correlation Computes pairwise return correlations and cointegration statistics for a basket of 2–10 symbols. Helps identify diversification opportunities, highly correlated pairs (pairs-trading candidates), and portfolio concentration risks. Response language : match the user's input language — Simplified Chinese / Traditional Chinese / English. When to use - User supplies 2–10 symbols and asks for correlation analysis, whether two stocks move together, rolling correlation trends, or pairs-trading pre-screening. - Triggers: "AAPL MSFT GOOGL 相关矩阵", "TSLA 和 NVDA 滚动相关", "correlation m…