Space the window title from the buttons as the buttons are from the edge

The unified toolbar leaves a wider gap after the zoom button than the
close button's inset from the window edge. The window now hides its own
title and draws the name and subtitle in the titlebar, with the gap after
the zoom button held equal to that inset by two layout guides. The title
truncates before the Home button. window.title and window.subtitle are
still set for the Window menu and accessibility.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

VPhoneExecutable/VPhoneVirtualization/UI/UserInterface/VPhoneVirtualMachineWindowController.swift

@@ -10,6 +10,7 @@ class VPhoneVirtualMachineWindowController: NSObject {
     private(set) var touchIDMonitor: VPhoneTouchIDMonitor?
     private var menuKeyMonitor: Any?
     private var homeButton: NSButton?
+    private var subtitleLabel: NSTextField?
 
     var captureView: VPhoneVirtualMachineView? {
         virtualMachineView
@@ -72,8 +73,10 @@ class VPhoneVirtualMachineWindowController: NSObject {
         toolbar.displayMode = .iconOnly
         window.toolbar = toolbar
         window.toolbarStyle = .unified
-        window.addTitlebarAccessoryViewController(makeHomeAccessory())
+        let homeAccessory = makeHomeAccessory()
+        window.addTitlebarAccessoryViewController(homeAccessory)
         updateHomeButton(connected: false)
+        installTitle(name, in: window, trailingInset: homeAccessory.view.frame.width)
 
         let controller = NSWindowController(window: window)
         controller.showWindow(nil)
@@ -109,10 +112,54 @@ class VPhoneVirtualMachineWindowController: NSObject {
         }
     }
 
-    // MARK: - Subtitle
+    // MARK: - Title
+
+    /// AppKit leaves a wider gap after the window buttons than before them, so
+    /// the title is drawn here instead: the gap after the zoom button equals
+    /// the close button's inset from the window edge. `window.title` and
+    /// `window.subtitle` are still set for the Window menu and accessibility.
+    private func installTitle(_ name: String, in window: NSWindow, trailingInset: CGFloat) {
+        guard let close = window.standardWindowButton(.closeButton),
+              let zoom = window.standardWindowButton(.zoomButton),
+              let titlebar = zoom.superview,
+              let frame = window.contentView?.superview
+        else { return }
+        window.titleVisibility = .hidden
+
+        let title = NSTextField(labelWithString: name)
+        title.font = .systemFont(ofSize: NSFont.systemFontSize + 2, weight: .bold)
+        let subtitle = NSTextField(labelWithString: "")
+        subtitle.font = .systemFont(ofSize: NSFont.smallSystemFontSize)
+        subtitle.textColor = .secondaryLabelColor
+        subtitle.isHidden = true
+        for label in [title, subtitle] {
+            label.lineBreakMode = .byTruncatingTail
+            label.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
+        }
+        subtitleLabel = subtitle
+
+        let stack = NSStackView(views: [title, subtitle])
+        stack.orientation = .vertical
+        stack.alignment = .leading
+        stack.spacing = 0
+        stack.translatesAutoresizingMaskIntoConstraints = false
+        titlebar.addSubview(stack)
+        let inset = NSLayoutGuide(), gap = NSLayoutGuide()
+        frame.addLayoutGuide(inset)
+        frame.addLayoutGuide(gap)
+        NSLayoutConstraint.activate([
+            inset.leadingAnchor.constraint(equalTo: frame.leadingAnchor),
+            inset.trailingAnchor.constraint(equalTo: close.leadingAnchor),
+            gap.leadingAnchor.constraint(equalTo: zoom.trailingAnchor),
+            gap.trailingAnchor.constraint(equalTo: stack.leadingAnchor),
+            gap.widthAnchor.constraint(equalTo: inset.widthAnchor),
+            stack.trailingAnchor.constraint(lessThanOrEqualTo: frame.trailingAnchor, constant: -trailingInset - 8),
+            stack.centerYAnchor.constraint(equalTo: zoom.centerYAnchor),
+        ])
+    }
 
     /// `iOS <version> - <address>` from vphoned's health report, which picks
-    /// the IPv4 address first and falls back to IPv6; empty until it connects.
+    /// the IPv4 address first and falls back to IPv6; hidden until it connects.
     private func updateSubtitle(control: VPhoneGuestControl) {
         guard let window = windowController?.window else { return }
         var parts: [String] = []
@@ -123,6 +170,8 @@ class VPhoneVirtualMachineWindowController: NSObject {
         let subtitle = parts.joined(separator: " - ")
         if window.subtitle != subtitle {
             window.subtitle = subtitle
+            subtitleLabel?.stringValue = subtitle
+            subtitleLabel?.isHidden = subtitle.isEmpty
         }
     }