feat(界面设计): 默认窗口材质改为纯色

internal/webview/webview.go

@@ -1213,16 +1213,12 @@ func windowOptions(dataDir string) (guigo.Options, error) {
 	if err != nil {
 		return guigo.Options{}, err
 	}
-	material := guigo.WindowSolid
-	if guigo.SupportsWindowMaterial(guigo.WindowAcrylic) {
-		material = guigo.WindowAcrylic
-	}
 	return guigo.Options{
 		AppID:          appID,
 		Title:          "OFDGo - OFD编辑器",
 		TitleBar:       guigo.TitleBarContent,
 		TitleBarColors: themeColors(false),
-		WindowMaterial: material,
+		WindowMaterial: guigo.WindowSolid,
 		Icon:           icon,
 		Width:          1440,
 		Height:         900,

internal/webview/webview_theme.go

@@ -49,7 +49,7 @@ func themeColors(dark bool) guigo.TitleBarColors {
 // loadTheme 在创建窗口前读取用户目录中的主题偏好
 // 返回: error 读取或解析错误
 func (h *Host) loadTheme() error {
-	h.theme = applicationTheme{Mode: "system", Material: "acrylic"}
+	h.theme = applicationTheme{Mode: "system", Material: "solid"}
 	data, err := os.ReadFile(h.themePath)
 	if os.IsNotExist(err) {
 		return nil