尝试使用mac的指纹识别来授权，但是似乎没有效果

internal/ui/app.go

@@ -98,6 +98,9 @@ func Run() {
 		log.L().Error("init i18n", "error", err)
 	}
 
+	// Set the localized Touch ID prompt for keychain access (macOS).
+	setTouchIDPromptFromI18n()
+
 	a := &App{
 		fyneApp:           app.NewWithID(paths.BundleID),
 		db:                store,
@@ -358,6 +361,9 @@ func (a *App) changeLanguage(lang string) {
 	// Switch the active localizer.
 	i18n.SetLanguage(lang)
 
+	// Update the Touch ID prompt text for the new language.
+	setTouchIDPromptFromI18n()
+
 	// Rebuild everything that holds cached strings.
 	a.rebuildUI()
 }

internal/ui/touchid_darwin.go

@@ -0,0 +1,14 @@
+//go:build darwin
+
+package ui
+
+import (
+	"lmvpn/internal/i18n"
+	"lmvpn/internal/keychain"
+)
+
+// setTouchIDPromptFromI18n configures the localized Touch ID prompt
+// text on the keychain store for the current language.
+func setTouchIDPromptFromI18n() {
+	keychain.SetTouchIDPrompt(i18n.T("TouchIDPrompt"))
+}

internal/ui/touchid_other.go

@@ -0,0 +1,7 @@
+//go:build !darwin
+
+package ui
+
+// setTouchIDPromptFromI18n is a no-op on non-darwin platforms where
+// Touch ID is not available.
+func setTouchIDPromptFromI18n() {}

internal/ui/view.go

@@ -3,12 +3,14 @@ package ui
 import (
 	_ "embed"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"net/url"
 	"time"
 
 	"lmvpn/internal/i18n"
 	"lmvpn/internal/ipc"
+	"lmvpn/internal/keychain"
 	"lmvpn/internal/model"
 	"lmvpn/internal/stats"
 
@@ -172,11 +174,17 @@ func (a *App) onConnect() {
 		password, err := a.kc.GetPassword(a.currentProfile.Name)
 		if err != nil {
 			fyne.Do(func() {
-				showError(i18n.T("DlgCredentialError"),
-					i18n.T("DlgCredentialErrorMsg"),
-					a.window)
-				a.stateLabel.SetText(i18n.T("StateDisconnected"))
-				a.setConnButtons(true, false)
+				if errors.Is(err, keychain.ErrUserCanceled) {
+					// User canceled the Touch ID / password prompt.
+					a.stateLabel.SetText(i18n.T("StateDisconnected"))
+					a.setConnButtons(true, false)
+				} else {
+					showError(i18n.T("DlgCredentialError"),
+						i18n.T("DlgCredentialErrorMsg"),
+						a.window)
+					a.stateLabel.SetText(i18n.T("StateDisconnected"))
+					a.setConnButtons(true, false)
+				}
 			})
 			return
 		}