Detect a security's home market from its ticker/ISIN/name and load the correct regulatory, accounting, fiscal, language, and disclosure rules for that market. ALWAYS invoke this FIRST before any equity-research workflow (earnings analysis, initiation, morning note, screen, etc.) so downstream skills use the correct filing sources, accounting standard, and fiscal calendar. Triggers on any non-US ticker, any ISIN, or whenever the user mentions a non-US company, exchange, or fiscal-year format (e.g., "FY24", "Q1 FY25", "中間期", "interim").
