{"service":"私有化 A 股量化平台","version":"0.1.0","status":"运行中","endpoints":{"GET /health":"健康检查","GET /coverage":"数据仓库覆盖情况（证券数 / 行数 / 时间跨度）","GET /bars/{symbol}":"单只证券日线，例如 /bars/sh.600519?limit=60"},"data":{"symbols":3,"rows":732,"span":"2025-10-09 ~ 2026-10-12"}}