Build native UI shell foundation

iosApp/iosApp/ContentView.swift

@@ -2,9 +2,64 @@ import Shared
 import SwiftUI
 import UIKit
 
+// Compose renders the app content, but UIKit owns the status bar style. This
+// host listens for theme changes from shared Kotlin code and asks iOS to
+// recompute the status bar contrast.
+final class VniDropHostViewController: UIViewController {
+    private let composeController: UIViewController
+    private var usesDarkTheme: Bool
+
+    init(composeController: UIViewController) {
+        self.composeController = composeController
+        self.usesDarkTheme = UITraitCollection.current.userInterfaceStyle == .dark
+        super.init(nibName: nil, bundle: nil)
+    }
+
+    @available(*, unavailable)
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    override var preferredStatusBarStyle: UIStatusBarStyle {
+        usesDarkTheme ? .lightContent : .darkContent
+    }
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+
+        addChild(composeController)
+        view.addSubview(composeController.view)
+        composeController.view.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            composeController.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            composeController.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            composeController.view.topAnchor.constraint(equalTo: view.topAnchor),
+            composeController.view.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
+        composeController.didMove(toParent: self)
+
+        NotificationCenter.default.addObserver(
+            self,
+            selector: #selector(themeDidChange(_:)),
+            name: Notification.Name("VniDropThemeChanged"),
+            object: nil
+        )
+    }
+
+    deinit {
+        NotificationCenter.default.removeObserver(self)
+    }
+
+    @objc private func themeDidChange(_ notification: Notification) {
+        guard let isDark = notification.userInfo?["isDark"] as? String else { return }
+        usesDarkTheme = isDark == "true"
+        setNeedsStatusBarAppearanceUpdate()
+    }
+}
+
 struct ComposeView: UIViewControllerRepresentable {
     func makeUIViewController(context: Self.Context) -> UIViewController {
-        MainViewControllerKt.MainViewController()
+        VniDropHostViewController(composeController: MainViewControllerKt.MainViewController())
     }
 
     func updateUIViewController(_ uiViewController: UIViewController, context: Self.Context) {}

iosApp/iosApp/Info.plist

@@ -1,8 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
-	<dict>
-		<key>CADisableMinimumFrameDurationOnPhone</key>
-		<true/>
-	</dict>
+<dict>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
+	<key>UIViewControllerBasedStatusBarAppearance</key>
+	<true/>
+</dict>
 </plist>