wire LSV peak detection into iOS AppState and LSVView with markers, labels, and toggle

cue-ios/CueIOS/AppState.swift

@@ -37,6 +37,8 @@ final class AppState {
 
     // LSV
     var lsvPoints: [LsvPoint] = []
+    var lsvPeaks: [LsvPeak] = []
+    var lsvManualPeaks: Bool = false
     var lsvTotal: UInt16 = 0
     var lsvStartV: String = "0"
     var lsvStopV: String = "500"
@@ -163,6 +165,9 @@ final class AppState {
 
         case .lsvEnd:
             saveLsv()
+            if !lsvManualPeaks {
+                lsvPeaks = detectLsvPeaks(lsvPoints)
+            }
             status = "LSV complete: \(lsvPoints.count) points"
 
         case .ampStart(let vHold):

cue-ios/CueIOS/Views/LSVView.swift

@@ -7,6 +7,7 @@ struct LSVView: View {
     var body: some View {
         VStack(spacing: 0) {
             controlsRow
+            peakLabels
             Divider()
             GeometryReader { geo in
                 if geo.size.width > 700 {
@@ -42,6 +43,16 @@ struct LSVView: View {
 
                 Button("Start LSV") { state.startLSV() }
                     .buttonStyle(ActionButtonStyle(color: .green))
+
+                Button(state.lsvManualPeaks ? "Manual" : "Auto") {
+                    state.lsvManualPeaks.toggle()
+                    if state.lsvManualPeaks {
+                        state.lsvPeaks.removeAll()
+                    } else {
+                        state.lsvPeaks = detectLsvPeaks(state.lsvPoints)
+                    }
+                }
+                .font(.caption)
             }
             .padding(.horizontal)
             .padding(.vertical, 8)
@@ -86,6 +97,18 @@ struct LSVView: View {
                             .foregroundStyle(Color.yellow)
                             .symbolSize(16)
                         }
+                        ForEach(Array(state.lsvPeaks.enumerated()), id: \.offset) { _, peak in
+                            PointMark(
+                                x: .value("V", Double(peak.vMv)),
+                                y: .value("I", Double(peak.iUa))
+                            )
+                            .foregroundStyle(peakColor(peak.kind))
+                            .symbolSize(100)
+                            .symbol(.diamond)
+                            RuleMark(x: .value("V", Double(peak.vMv)))
+                                .foregroundStyle(peakColor(peak.kind).opacity(0.3))
+                                .lineStyle(StrokeStyle(lineWidth: 1, dash: [4, 4]))
+                        }
                     }
                     .chartXAxisLabel("V (mV)")
                     .chartYAxisLabel("I (uA)", position: .leading)
@@ -115,6 +138,36 @@ struct LSVView: View {
         .clipShape(RoundedRectangle(cornerRadius: 8))
     }
 
+    @ViewBuilder
+    private var peakLabels: some View {
+        if !state.lsvPeaks.isEmpty {
+            HStack(spacing: 12) {
+                ForEach(Array(state.lsvPeaks.enumerated()), id: \.offset) { _, peak in
+                    let label: String = {
+                        switch peak.kind {
+                        case .freeCl:   return String(format: "Free: %.0fmV %.2fuA", peak.vMv, peak.iUa)
+                        case .totalCl:  return String(format: "Total: %.0fmV %.2fuA", peak.vMv, peak.iUa)
+                        case .crossover: return String(format: "X-over: %.0fmV", peak.vMv)
+                        }
+                    }()
+                    Text(label)
+                        .font(.caption)
+                        .foregroundStyle(peakColor(peak.kind))
+                }
+            }
+            .padding(.horizontal, 8)
+            .padding(.vertical, 4)
+        }
+    }
+
+    private func peakColor(_ kind: PeakKind) -> Color {
+        switch kind {
+        case .freeCl:   .green
+        case .totalCl:  .orange
+        case .crossover: .purple
+        }
+    }
+
     // MARK: - Table
 
     private var lsvTable: some View {