A pill at the notch, for your Mac app.

import AppKit
import PolytopicNotch
import SwiftUI

@MainActor
final class MyNotch {
    let content = NotchContent()
    let settings = InMemoryNotchSettings()            // or your own NotchSettingsStore (Recipes › Settings)
    let neighbors = NotchNeighborMonitor()
    lazy var controller = NotchPanelController(content: content, settings: settings, neighbors: neighbors)
    lazy var prompts = NotchPromptWindowController(content: content) { [unowned self] in controller.pillShowsPrompt }

    func start() {
        content.symbol = "waveform"
        content.title = "My App"
        content.status = .quiet                       // a meter and a status dot beside the notch
        content.expanded = NotchBody(height: 160) { Text("Shown on hover").padding() }
        controller.start()
        observe { [prompts] in prompts.update() }     // a question the pill can't show floats in a window
    }
}

/// Runs `apply` again whenever an observable value it read changes.
@MainActor
func observe(_ apply: @escaping @MainActor () -> Void) {
    withObservationTracking(apply) { Task { @MainActor in observe(apply) } }
}

struct MonitorPanel: View {
    @Bindable var model: Monitor        // your own model: the panel is rebuilt on every open

    var body: some View {
        VStack(alignment: .leading, spacing: 8) {
            HStack {
                NotchTabBar(Monitor.Tab.allCases, selection: $model.tab) { $0.title }
                NotchMenuButton(menu: model.menu) { _ in Image(systemName: "ellipsis.circle") }
            }
            NotchLiveList(model.feed) { FeedRow(item: $0).notchLiveAction() }
        }
        .padding(16)
    }
}