iOS: extract device/platform info into DeviceInfoHelper, keep Settings platform string as iOS X.Y.Z

apps/ios/Sources/Device/DeviceInfoHelper.swift

@@ -0,0 +1,71 @@
+import Foundation
+import UIKit
+
+import Darwin
+
+/// Shared device and platform info for Settings, gateway node payloads, and device status.
+enum DeviceInfoHelper {
+    /// e.g. "iOS 18.0.0" or "iPadOS 18.0.0" by interface idiom. Use for gateway/device payloads.
+    static func platformString() -> String {
+        let v = ProcessInfo.processInfo.operatingSystemVersion
+        let name = switch UIDevice.current.userInterfaceIdiom {
+        case .pad:
+            "iPadOS"
+        case .phone:
+            "iOS"
+        default:
+            "iOS"
+        }
+        return "\(name) \(v.majorVersion).\(v.minorVersion).\(v.patchVersion)"
+    }
+
+    /// Always "iOS X.Y.Z" for UI display (e.g. Settings), matching legacy behavior on iPad.
+    static func platformStringForDisplay() -> String {
+        let v = ProcessInfo.processInfo.operatingSystemVersion
+        return "iOS \(v.majorVersion).\(v.minorVersion).\(v.patchVersion)"
+    }
+
+    /// Device family for display: "iPad", "iPhone", or "iOS".
+    static func deviceFamily() -> String {
+        switch UIDevice.current.userInterfaceIdiom {
+        case .pad:
+            "iPad"
+        case .phone:
+            "iPhone"
+        default:
+            "iOS"
+        }
+    }
+
+    /// Machine model identifier from uname (e.g. "iPhone17,1").
+    static func modelIdentifier() -> String {
+        var systemInfo = utsname()
+        uname(&systemInfo)
+        let machine = withUnsafeBytes(of: &systemInfo.machine) { ptr in
+            String(bytes: ptr.prefix { $0 != 0 }, encoding: .utf8)
+        }
+        let trimmed = machine?.trimmingCharacters(in: .whitespacesAndNewlines) ?? ""
+        return trimmed.isEmpty ? "unknown" : trimmed
+    }
+
+    /// App marketing version only, e.g. "2026.2.0" or "dev".
+    static func appVersion() -> String {
+        Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String ?? "dev"
+    }
+
+    /// App build string, e.g. "123" or "".
+    static func appBuild() -> String {
+        let raw = Bundle.main.infoDictionary?["CFBundleVersion"] as? String ?? ""
+        return raw.trimmingCharacters(in: .whitespacesAndNewlines)
+    }
+
+    /// Display string for Settings: "1.2.3" or "1.2.3 (456)" when build differs.
+    static func openClawVersionString() -> String {
+        let version = appVersion()
+        let build = appBuild()
+        if build.isEmpty || build == version {
+            return version
+        }
+        return "\(version) (\(build))"
+    }
+}