How Dagrun looks inside macOS.

Unified titlebar · 52pt tall · vibrant.

Use windowStyle(.hiddenTitleBar) and fold the toolbar into the titlebar. Traffic lights sit 14pt from the leading edge, vertically centered. The sidebar is a vibrancy-backed source list at 240pt. Minimum window 1100×760, default 1280×820.

// Sources/AgentOSApp/AgentOSApp.swift (illustrative)
@main
struct dagrunApp: App {
    @StateObject private var store = DashboardStore()

    var body: some Scene {
        WindowGroup {
            RootView()
                .environmentObject(store)
                .frame(minWidth: 1100, minHeight: 760)
        }
        .windowStyle(.hiddenTitleBar)
        .windowToolbarStyle(.unified(showsTitle: false))
        .defaultSize(width: 1280, height: 820)

        Settings {
            SettingsView()
                .frame(width: 900, height: 720)
        }
    }
}

240pt · vibrancy · accent-tinted selection.

NavigationSplitView with the sidebar column set to .navigationSplitViewColumnWidth(min: 220, ideal: 240). Section headers in JetBrains Mono 9 @ 0.18em tracking; items in Inter 13. Selected item is a solid signal-orange pill with white text — do not use the default system blue.

Template image · single color.

macOS menu bar extras must be a 1-color template image — the system inverts automatically in dark menu bars. Ship the mark at 16pt + 18pt retina, alpha only, stored in the app bundle as AppIconTemplate.pdf.

Paper squircle · signal-dot emphasis.

The icon is drawn on a 1024×1024 paper-tinted squircle. Apple’s system squircle is a super-ellipse — not a rounded rectangle. The mark sits centered, with the signal dot still anchored to a ground-line. Export an .icns with sizes 16/32/128/256/512 @ 1× and 2×.

Native controls first, Dagrun finish second.

Prefer .borderedProminent / .bordered / .plain with .controlSize(.small / .regular / .large). Then set AccentColor = #FF4D1F in the asset catalog so every system-tinted control picks up signal. The Dagrun accent filled button overrides system only when we need to force the signal color against a non-tinting surface.

What you ship to Xcode.