Feature request: Add command line option to record without a terminal, allow a process signal to stop the recording

[crshrprt]

Right now is only possible to record by using a terminal and to stop the recording by interacting with it.

It would be useful to have an option in the command line to allow hns to start recording without a terminal.
In this case hns could wait for a process signal, like SIGTERM, to stop the recording.

This would make it easy to use hns in a script or with keyboard shortcuts.

[NightMachinery]

I'm curious, what is the backend for the recorder?

I implemented sth similar and I use ffmpeg to record the audio. (I think I forked the code from whisper.el.) But ffmpeg starts recording with a delay, it seems.

[PhantomYdn]

Fully support the request, but it should be 2 independent features. For example running without terminal willbe helpful for vim users so you can do something like :read !hns.

[PhantomYdn]

Also it will be nice to have option to do not output extra things (like Recording...), but actual transciption.