feat: 将"关于"从系统托盘原生对话框迁移到前端页面

移除系统托盘右键菜单中的"关于"选项及各平台原生对话框实现，
在前端新增 /about 路由和关于页面展示品牌信息，侧边栏增加关于导航入口

backend/cmd/desktop/dialog_darwin.go

@@ -18,14 +18,6 @@ func showError(title, message string) {
 	}
 }
 
-func showAbout() {
-	script := fmt.Sprintf(`display dialog "%s" buttons {"OK"} default button "OK" with title "%s"`,
-		escapeAppleScript(aboutMessage()), escapeAppleScript(appAboutTitle))
-	if err := exec.Command("osascript", "-e", script).Run(); err != nil {
-		dialogLogger().Warn("显示关于对话框失败", zap.Error(err))
-	}
-}
-
 func escapeAppleScript(s string) string {
 	s = strings.ReplaceAll(s, "\\", "\\\\")
 	s = strings.ReplaceAll(s, "\"", "\\\"")

backend/cmd/desktop/dialog_linux.go

@@ -65,21 +65,3 @@ func showError(title, message string) {
 		dialogLogger().Error("无法显示错误对话框")
 	}
 }
-
-func showAbout() {
-	switch dialogTool {
-	case toolZenity:
-		exec.Command("zenity", "--info",
-			fmt.Sprintf("--title=%s", appAboutTitle),
-			fmt.Sprintf("--text=%s", aboutMessage())).Run()
-	case toolKdialog:
-		exec.Command("kdialog", "--msgbox", aboutMessage(), "--title", appAboutTitle).Run()
-	case toolNotifySend:
-		exec.Command("notify-send", appAboutTitle, aboutMessage()).Run()
-	case toolXmessage:
-		exec.Command("xmessage", "-center",
-			fmt.Sprintf("%s: %s", appAboutTitle, aboutMessage())).Run()
-	default:
-		dialogLogger().Info(appAboutTitle)
-	}
-}

backend/cmd/desktop/dialog_windows.go

@@ -21,10 +21,6 @@ func showError(title, message string) {
 	messageBox(title, message, MB_ICONERROR)
 }
 
-func showAbout() {
-	messageBox(appAboutTitle, aboutMessage(), MB_ICONINFORMATION)
-}
-
 func messageBox(title, message string, flags uint) {
 	titlePtr, _ := syscall.UTF16PtrFromString(title)
 	messagePtr, _ := syscall.UTF16PtrFromString(message)

backend/cmd/desktop/main.go

@@ -287,8 +287,6 @@ func setupSystray(port int) {
 		mPort := systray.AddMenuItem(fmt.Sprintf("端口: %d", port), "")
 		mPort.Disable()
 		systray.AddSeparator()
-		mAbout := systray.AddMenuItem("关于", "")
-		systray.AddSeparator()
 		mQuit := systray.AddMenuItem("退出", "停止服务并退出")
 
 		go func() {
@@ -298,8 +296,6 @@ func setupSystray(port int) {
 					if err := openBrowser(fmt.Sprintf("http://localhost:%d", port)); err != nil {
 						zapLogger.Warn("打开浏览器失败", zap.Error(err))
 					}
-				case <-mAbout.ClickedCh:
-					showAbout()
 				case <-mQuit.ClickedCh:
 					doShutdown()
 					systray.Quit()

backend/cmd/desktop/messagebox_test.go

@@ -13,7 +13,3 @@ func TestMessageBoxW_WindowsOnly(t *testing.T) {
 func TestShowError_WindowsBranch(t *testing.T) {
 	showError("测试错误", "这是一条测试错误消息")
 }
-
-func TestShowAbout_WindowsBranch(t *testing.T) {
-	showAbout()
-}

backend/cmd/desktop/metadata.go

@@ -3,11 +3,6 @@ package main
 const (
 	appName        = "Nex"
 	appTooltip     = appName
-	appAboutTitle  = "关于 " + appName
 	appDescription = "AI Gateway - 统一的大模型 API 网关"
 	appWebsite     = "https://github.com/nex/gateway"
 )
-
-func aboutMessage() string {
-	return appName + "\n\n" + appDescription + "\n\n" + appWebsite
-}

backend/cmd/desktop/metadata_test.go

@@ -2,13 +2,6 @@ package main
 
 import "testing"
 
-func TestAboutMessage(t *testing.T) {
-	expected := "Nex\n\nAI Gateway - 统一的大模型 API 网关\n\nhttps://github.com/nex/gateway"
-	if got := aboutMessage(); got != expected {
-		t.Fatalf("aboutMessage() = %q, want %q", got, expected)
-	}
-}
-
 func TestDesktopMetadata(t *testing.T) {
 	if appName != "Nex" {
 		t.Fatalf("appName = %q, want %q", appName, "Nex")
@@ -17,8 +10,4 @@ func TestDesktopMetadata(t *testing.T) {
 	if appTooltip != appName {
 		t.Fatalf("appTooltip = %q, want %q", appTooltip, appName)
 	}
-
-	if appAboutTitle != "关于 Nex" {
-		t.Fatalf("appAboutTitle = %q, want %q", appAboutTitle, "关于 Nex")
-	}
 }