Bring the checklist app under version control

The project has lived only as a folder on the Mac Studio and, briefly, as a
transfer tarball. This is the first commit: the Express server and its web
front end, the Capacitor iOS and Android wrappers, and the release and backup
scripts.

The repo is the source, not a backup of the machine. Left out on purpose, by
the .gitignore files that were already in the tree: node_modules, build output,
mobile/www (regenerated from server/public on every build), and server/data,
which holds the live checklists and belongs on the NAS rather than in git.

Every credential is excluded too — server/.env, the Play upload keystore and
its properties file, the App Store Connect key and ios-signing.config. The one
secret that was not in an ignored file was the NAS SSH password, hard-coded in
build-deploy.sh and grepped back out of it by backup-to-drive.sh. Both now read
it from the login keychain (service checklist-nas, account Christian), falling
back to NAS_PASS in the environment, so rotating it is one keychain entry
rather than a history rewrite.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

mobile/ios/App/App/SceneDelegate.swift

@@ -0,0 +1,24 @@
+import UIKit
+import Capacitor
+
+class SceneDelegate: UIResponder, UIWindowSceneDelegate {
+    var window: UIWindow?
+
+    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
+        guard let windowScene = scene as? UIWindowScene else { return }
+
+        window = UIWindow(windowScene: windowScene)
+        window?.rootViewController = CAPBridgeViewController()
+        window?.makeKeyAndVisible()
+
+        SceneDelegateProxy.shared.scene(scene, willConnectTo: session, options: connectionOptions)
+    }
+
+    func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) {
+        SceneDelegateProxy.shared.scene(scene, openURLContexts: URLContexts)
+    }
+
+    func scene(_ scene: UIScene, continue userActivity: NSUserActivity) {
+        SceneDelegateProxy.shared.scene(scene, continue: userActivity)
+    }
+}