{"service":"Stock K-line API Server","version":"1.0.0","stack":"Express + TypeScript + Prisma + PostgreSQL 16","documentation":{"health":"GET /api/health","randomKline":"GET /api/kline/random?days=120","stockKline":"GET /api/stock/kline?code=600519","stockList":"GET /api/stock/list?keyword=茅台&limit=20"}}