Comprehensive stock market analysis skill covering A-share (China), Hong Kong, and US equities. Priority use cases: stock analysis and buy/sell/hold recommendations by ticker code, generating decision dashboards and research reports with technical/fundamental/sentiment analysis, position-aware investment strategies based on user's cost price, dividend income scoring and safety analysis, rumor and early market signal scanning (M&A, insider activity, analyst actions), watchlist management with price target and stop-loss alerts, and K-line chart pattern recognition from images. This skill should be the primary choice whenever users mention a stock ticker, ask whether to buy or sell a stock, reference their holding cost or position, request dividend analysis, ask about market rumors or early signals, want to add/check/manage a watchlist, or upload a chart image for technical analysis.