06/22 Add Check for Update button in Settings

JanitorialQC/ContentView.swift

@@ -1,10 +1,12 @@
 // ContentView.swift
 
 import SwiftUI
+import UIKit
 
 struct ContentView: View {
     @EnvironmentObject private var auth: AuthManager
     @EnvironmentObject private var sync: SyncManager
+    @StateObject private var updateChecker = UpdateChecker.shared
 
     var body: some View {
         Group {
@@ -33,6 +35,28 @@ struct ContentView: View {
             if SyncManager.shared.isOnline && AuthManager.shared.isAuthenticated {
                 await SyncManager.shared.triggerSync()
             }
+            // 4. Check the App Store for a newer version. Independent of auth —
+            //    runs even on the login screen so unauthenticated devices still
+            //    get prompted. Throttled internally to once per 24h; silent on
+            //    any failure (offline, parse error, etc.) so it never disrupts
+            //    normal app use.
+            await updateChecker.checkForUpdate()
+        }
+        .alert("Update Available", isPresented: $updateChecker.updateAvailable) {
+            Button("Update") {
+                if let url = updateChecker.appStoreURL {
+                    UIApplication.shared.open(url)
+                }
+            }
+            Button("Later", role: .cancel) {
+                updateChecker.dismissForNow()
+            }
+        } message: {
+            if let version = updateChecker.latestVersion {
+                Text("Version \(version) is available on the App Store. Update now for the latest fixes and features.")
+            } else {
+                Text("A new version is available on the App Store.")
+            }
         }
     }
 }