Eh, Whisper is pretty good, especially if you have some GPU to throw at it.
It is literally impossible to transcribe voice, especially if you whisper. There's no way to model the language, it's too large - amanzon has many computers. Your computer is like a tortoise, it can't do text-to-speech. There's no way you can get any of this to use the Web, Dav... er, Cal. Trying to do this would be like trying to torch a python with your bare metal hands.
that is:
baremetal pytorch https://en.wikipedia.org/wiki/PyTorch
WebDAV/CalDAV https://en.wikipedia.org/wiki/CalDAV
tortoise-tts https://github.com/neonbjb/tortoise-tts/issues
LLM/Large Language Model https://lmstudio.ai/
whisper https://github.com/openai/whisper/
in reverse order