Add a GUI application

Feature Description

I typically don't like TUI and really prefer a proper Desktop application, as that in general makes workflows much nicer.

Use Case

More versatile input, easier navigation, more functions, better overview of things, less fatigue.

Additional Context

I am aware that this will be some sort of stretch goal and might not be doable as of now with the resources at hand. Still, I wanted to open an issue for tracking.

How important is this to you?

Important for my workflow

该 issue 没有指明文件、测试或入口点。首先调研现有的 TUI 和项目结构，以了解桌面应用需要覆盖哪些工作流。完成这项工作需要确定一致认可的 GUI 范围，并提供一个能够改善导航、输入、概览和可用功能的可运行应用。