fix macOS Frontend config crash on macOS 26

Author: eagleoflqj

src/config/appimoptionview.swift

@@ -10,7 +10,6 @@ private let presetApps: [String] = [
 
 struct AppIMOptionView: OptionView {
   let label: String
-  let openPanel = NSOpenPanel()
   @ObservedObject var model: AppIMOption
   @State private var appIcon: NSImage? = nil
   @State private var imNameMap: [String: String] = [:]
@@ -23,6 +22,7 @@ struct AppIMOptionView: OptionView {
   }
 
   var body: some View {
+    let openPanel = NSOpenPanel()  // macOS 26 crashes if put outside of body.
     HStack {
       if !model.appPath.isEmpty {
         appIconFromPath(model.appPath)

src/config/vimmodeoptionview.swift

@@ -2,10 +2,10 @@ import SwiftUI
 
 struct VimModeOptionView: OptionView {
   let label: String
-  let openPanel = NSOpenPanel()
   @ObservedObject var model: VimModeOption
 
   var body: some View {
+    let openPanel = NSOpenPanel()  // macOS 26 crashes if put outside of body.
     HStack {
       let appPath = appPathFromBundleIdentifier(model.value)
       let appName = appNameFromPath(appPath)