import BioUI

BioHRChart(samples: hrSamples)

struct HRTrendView: View {
    @ObservedObject var store: BioLiveStore

    var body: some View {
        if let samples = store.signals["hr"] {
            BioHRChart(samples: samples)
                .frame(height: 200)
        } else {
            Text("Waiting for heart rate data...")
                .foregroundStyle(.secondary)
        }
    }
}