Add Chinese (Simplified) localization

Package.swift

@@ -13,6 +13,7 @@ let sweetCookieKitDependency: Package.Dependency =
 
 let package = Package(
     name: "CodexBar",
+    defaultLocalization: "en",
     platforms: [
         .macOS(.v14),
     ],

Sources/CodexBar/CodexbarApp.swift

@@ -43,6 +43,7 @@ struct CodexBarApp: App {
 
         let preferencesSelection = PreferencesSelection()
         let settings = SettingsStore()
+        Self.applyLanguagePreference(from: settings)
         let managedCodexAccountCoordinator = ManagedCodexAccountCoordinator()
         managedCodexAccountCoordinator.onManagedAccountsDidChange = {
             _ = settings.persistResolvedCodexActiveSourceCorrectionIfNeeded()
@@ -100,6 +101,15 @@ struct CodexBarApp: App {
         NSApp.activate(ignoringOtherApps: true)
         _ = NSApp.sendAction(Selector(("showPreferencesWindow:")), to: nil, from: nil)
     }
+
+    private static func applyLanguagePreference(from settings: SettingsStore) {
+        let language = settings.appLanguage
+        if language.isEmpty {
+            UserDefaults.standard.removeObject(forKey: "AppleLanguages")
+        } else {
+            UserDefaults.standard.set([language], forKey: "AppleLanguages")
+        }
+    }
 }
 
 // MARK: - Updater abstraction

Sources/CodexBar/KeychainPromptCoordinator.swift

@@ -134,7 +134,7 @@ enum KeychainPromptCoordinator {
         let alert = NSAlert()
         alert.messageText = title
         alert.informativeText = message
-        alert.addButton(withTitle: "OK")
+        alert.addButton(withTitle: L("OK"))
         _ = alert.runModal()
     }
 }

Sources/CodexBar/Localization.swift

@@ -0,0 +1,40 @@
+import Foundation
+
+private func appLanguageDefaults() -> UserDefaults {
+    if Bundle.main.bundleIdentifier != nil {
+        return .standard
+    }
+    // Fallback for running outside a .app bundle (swift run / debug builds)
+    return UserDefaults(suiteName: "CodexBar") ?? .standard
+}
+
+private func localizedBundle() -> Bundle {
+    let language = appLanguageDefaults().string(forKey: "appLanguage") ?? ""
+    if !language.isEmpty {
+        if let path = Bundle.module.path(forResource: language, ofType: "lproj"),
+           let bundle = Bundle(path: path) {
+            return bundle
+        }
+    } else {
+        // System mode: follow macOS language preferences
+        if let preferred = Bundle.module.preferredLocalizations.first,
+           let path = Bundle.module.path(forResource: preferred, ofType: "lproj"),
+           let bundle = Bundle(path: path) {
+            return bundle
+        }
+    }
+    // Fallback to en.lproj
+    if let path = Bundle.module.path(forResource: "en", ofType: "lproj"),
+       let bundle = Bundle(path: path) {
+        return bundle
+    }
+    return Bundle.module
+}
+
+func L(_ key: String) -> String {
+    localizedBundle().localizedString(forKey: key, value: nil, table: nil)
+}
+
+func L(_ key: String, _ arguments: CVarArg...) -> String {
+    String(format: localizedBundle().localizedString(forKey: key, value: nil, table: nil), arguments: arguments)
+}

Sources/CodexBar/ManagedCodexAccountService.swift

@@ -161,12 +161,12 @@ struct CodexWorkspaceAlertSelector: ManagedCodexWorkspaceSelecting {
         }
 
         let alert = NSAlert()
-        alert.messageText = "Choose Codex workspace"
-        alert.informativeText = "CodexBar found multiple workspaces for \(email). Choose the one to add."
+        alert.messageText = L("Choose Codex workspace")
+        alert.informativeText = String(format: L("multiple_workspaces_found"), email)
         alert.alertStyle = .informational
         alert.accessoryView = popup
-        alert.addButton(withTitle: "Add Workspace")
-        alert.addButton(withTitle: "Cancel")
+        alert.addButton(withTitle: L("Add Workspace"))
+        alert.addButton(withTitle: L("Cancel"))
 
         guard alert.runModal() == .alertFirstButtonReturn else {
             return nil

Sources/CodexBar/MenuBarDisplayMode.swift

@@ -12,17 +12,17 @@ enum MenuBarDisplayMode: String, CaseIterable, Identifiable {
 
     var label: String {
         switch self {
-        case .percent: "Percent"
-        case .pace: "Pace"
-        case .both: "Both"
+        case .percent: L("display_mode_percent")
+        case .pace: L("display_mode_pace")
+        case .both: L("display_mode_both")
         }
     }
 
     var description: String {
         switch self {
-        case .percent: "Show remaining/used percentage (e.g. 45%)"
-        case .pace: "Show pace indicator (e.g. +5%)"
-        case .both: "Show both percentage and pace (e.g. 45% · +5%)"
+        case .percent: L("display_mode_percent_desc")
+        case .pace: L("display_mode_pace_desc")
+        case .both: L("display_mode_both_desc")
         }
     }
 }

Sources/CodexBar/PreferencesAboutPane.swift

@@ -51,26 +51,26 @@ struct AboutPane: View {
             VStack(spacing: 2) {
                 Text("CodexBar")
                     .font(.title3).bold()
-                Text("Version \(self.versionString)")
+                Text(String(format: L("version_format"), self.versionString))
                     .foregroundStyle(.secondary)
                 if let buildTimestamp {
-                    Text("Built \(buildTimestamp)")
+                    Text(String(format: L("built_format"), buildTimestamp))
                         .font(.footnote)
                         .foregroundStyle(.secondary)
                 }
-                Text("May your tokens never run out—keep agent limits in view.")
+                Text(L("about_tagline"))
                     .font(.footnote)
                     .foregroundStyle(.secondary)
             }
 
             VStack(alignment: .center, spacing: 10) {
                 AboutLinkRow(
                     icon: "chevron.left.slash.chevron.right",
-                    title: "GitHub",
+                    title: L("link_github"),
                     url: "https://github.com/steipete/CodexBar")
-                AboutLinkRow(icon: "globe", title: "Website", url: "https://steipete.me")
-                AboutLinkRow(icon: "bird", title: "Twitter", url: "https://twitter.com/steipete")
-                AboutLinkRow(icon: "envelope", title: "Email", url: "mailto:peter@steipete.me")
+                AboutLinkRow(icon: "globe", title: L("link_website"), url: "https://steipete.me")
+                AboutLinkRow(icon: "bird", title: L("link_twitter"), url: "https://twitter.com/steipete")
+                AboutLinkRow(icon: "envelope", title: L("link_email"), url: "mailto:peter@steipete.me")
             }
             .padding(.top, 8)
             .frame(maxWidth: .infinity)
@@ -80,12 +80,12 @@ struct AboutPane: View {
 
             if self.updater.isAvailable {
                 VStack(spacing: 10) {
-                    Toggle("Check for updates automatically", isOn: self.$autoUpdateEnabled)
+                    Toggle(L("check_updates_auto"), isOn: self.$autoUpdateEnabled)
                         .toggleStyle(.checkbox)
                         .frame(maxWidth: .infinity, alignment: .center)
                     VStack(spacing: 6) {
                         HStack(spacing: 12) {
-                            Text("Update Channel")
+                            Text(L("update_channel"))
                             Spacer()
                             Picker("", selection: self.updateChannelBinding) {
                                 ForEach(UpdateChannel.allCases) { channel in
@@ -102,14 +102,14 @@ struct AboutPane: View {
                             .multilineTextAlignment(.center)
                             .frame(maxWidth: 280)
                     }
-                    Button("Check for Updates…") { self.updater.checkForUpdates(nil) }
+                    Button(L("check_for_updates")) { self.updater.checkForUpdates(nil) }
                 }
             } else {
-                Text(self.updater.unavailableReason ?? "Updates unavailable in this build.")
+                Text(self.updater.unavailableReason ?? L("updates_unavailable"))
                     .foregroundStyle(.secondary)
             }
 
-            Text("© 2026 Peter Steinberger. MIT License.")
+            Text(L("copyright"))
                 .font(.footnote)
                 .foregroundStyle(.secondary)
                 .padding(.top, 4)

Sources/CodexBar/PreferencesAdvancedPane.swift

@@ -11,17 +11,17 @@ struct AdvancedPane: View {
         ScrollView(.vertical, showsIndicators: true) {
             VStack(alignment: .leading, spacing: 16) {
                 SettingsSection(contentSpacing: 8) {
-                    Text("Keyboard shortcut")
+                    Text(L("section_keyboard_shortcut"))
                         .font(.caption)
                         .foregroundStyle(.secondary)
                         .textCase(.uppercase)
                     HStack(alignment: .center, spacing: 12) {
-                        Text("Open menu")
+                        Text(L("open_menu_shortcut_title"))
                             .font(.body)
                         Spacer()
                         KeyboardShortcuts.Recorder(for: .openMenu)
                     }
-                    Text("Trigger the menu bar menu from anywhere.")
+                    Text(L("open_menu_shortcut_subtitle"))
                         .font(.footnote)
                         .foregroundStyle(.tertiary)
                 }
@@ -36,7 +36,7 @@ struct AdvancedPane: View {
                             if self.isInstallingCLI {
                                 ProgressView().controlSize(.small)
                             } else {
-                                Text("Install CLI")
+                                Text(L("install_cli"))
                             }
                         }
                         .disabled(self.isInstallingCLI)
@@ -48,7 +48,7 @@ struct AdvancedPane: View {
                                 .lineLimit(2)
                         }
                     }
-                    Text("Symlink CodexBarCLI to /usr/local/bin and /opt/homebrew/bin as codexbar.")
+                    Text(L("install_cli_subtitle"))
                         .font(.footnote)
                         .foregroundStyle(.tertiary)
                 }
@@ -57,39 +57,36 @@ struct AdvancedPane: View {
 
                 SettingsSection(contentSpacing: 10) {
                     PreferenceToggleRow(
-                        title: "Show Debug Settings",
-                        subtitle: "Expose troubleshooting tools in the Debug tab.",
+                        title: L("show_debug_settings_title"),
+                        subtitle: L("show_debug_settings_subtitle"),
                         binding: self.$settings.debugMenuEnabled)
                     PreferenceToggleRow(
-                        title: "Surprise me",
-                        subtitle: "Check if you like your agents having some fun up there.",
+                        title: L("surprise_me_title"),
+                        subtitle: L("surprise_me_subtitle"),
                         binding: self.$settings.randomBlinkEnabled)
                     PreferenceToggleRow(
-                        title: "Weekly limit confetti",
-                        subtitle: "Play full-screen confetti when weekly usage resets.",
+                        title: L("weekly_limit_confetti_title"),
+                        subtitle: L("weekly_limit_confetti_subtitle"),
                         binding: self.$settings.confettiOnWeeklyLimitResetsEnabled)
                 }
 
                 Divider()
 
                 SettingsSection(contentSpacing: 10) {
                     PreferenceToggleRow(
-                        title: "Hide personal information",
-                        subtitle: "Obscure email addresses in the menu bar and menu UI.",
+                        title: L("hide_personal_info_title"),
+                        subtitle: L("hide_personal_info_subtitle"),
                         binding: self.$settings.hidePersonalInfo)
                 }
 
                 Divider()
 
                 SettingsSection(
-                    title: "Keychain access",
-                    caption: """
-                    Disable all Keychain reads and writes. Browser cookie import is unavailable; paste Cookie \
-                    headers manually in Providers.
-                    """) {
+                    title: L("section_keychain_access"),
+                    caption: L("keychain_access_caption")) {
                         PreferenceToggleRow(
-                            title: "Disable Keychain access",
-                            subtitle: "Prevents any Keychain access while enabled.",
+                            title: L("disable_keychain_access_title"),
+                            subtitle: L("disable_keychain_access_subtitle"),
                             binding: self.$settings.debugDisableKeychainAccess)
                     }
             }
@@ -109,7 +106,7 @@ extension AdvancedPane {
         let helperURL = Bundle.main.bundleURL.appendingPathComponent("Contents/Helpers/CodexBarCLI")
         let fm = FileManager.default
         guard fm.fileExists(atPath: helperURL.path) else {
-            self.cliStatus = "CodexBarCLI not found in app bundle."
+            self.cliStatus = L("cli_not_found")
             return
         }
 
@@ -145,7 +142,7 @@ extension AdvancedPane {
         }
 
         self.cliStatus = results.isEmpty
-            ? "No writable bin dirs found."
+            ? L("no_writable_bin_dirs")
             : results.joined(separator: " · ")
     }