pub fn parse_binance_klines(json: &str) -> Result<Vec<Candle>>Expand description
Parse a Binance GET /api/v3/klines response (a JSON array of kline arrays)
into candles. Each kline is [openTime_ms, "open", "high", "low", "close", "volume", …] where the OHLCV fields are JSON strings; the open time is
milliseconds since epoch and is converted to seconds. This is always
available (no HTTP dependency) so the parser can be tested offline.