This is a weird demand to have in my opinion. You have plenty of applications on your computer and they only do what they were designed for. You can't ask a note taking app (even if it's open soured) to do video editing, unless you modify the code.
I've had to work around keyboards on phones that try. How is that different? Given enough trying, you could get what you want from the LLM too, they're just better at directing you than the shitty keyboard app.
