9fef4bea59
- ApiHealthCheckService: 新增币安 API(ping)、币安 WebSocket(5m/15m 连接状态) - BinanceKlineService: 连接状态追踪 getConnectionStatuses 供健康检查 - CryptoTailOrderbookWsService: book 事件 bids 为空时不再取 [0],避免 Index 0 out of bounds - BinanceKlineAutoSpreadService + 文档 + i18n: 历史 K 线由 30 根改为 20 根 Co-authored-by: Cursor <cursoragent@cursor.com>