feat(main): 调整窗口最大宽度和高度并启用默认上下文菜单

- 将窗口最大宽度从 1280调整为 1920
- 启用默认上下文菜单

main.go

@@ -90,13 +90,14 @@ func main() {
 		Height:                   920,
 		MinWidth:                 1024,
 		MinHeight:                768,
-		MaxWidth:           1280,
+		MaxWidth:                 1920,
 		MaxHeight:                960,
 		DisableResize:            false,
 		Fullscreen:               false,
 		Frameless:                true,
 		StartHidden:              false,
 		HideWindowOnClose:        false,
+		EnableDefaultContextMenu: true,
 		BackgroundColour:         &options.RGBA{R: 255, G: 255, B: 255, A: 255},
 		Assets:                   assets,
 		Menu:                     AppMenu,