The problem
When I'm stuck on something, the help is usually somewhere else: another window, another tab, a search that loses the context I was in.
What it does
Mimir sits in the tray and opens beside the work. You ask in plain words and it answers briefly, with citations from sources it actually read. When it can't find support, it says so instead of guessing. As a tutor it gives hints and checks attempts rather than handing over answers.
One decision
Private material never leaves the laptop. Anything from your files, your code, your screen or your computer's audio is answered by a small model running locally. Only general public questions may go to a hosted model. The check that decides is deliberately cautious: a single sign of private content is enough to keep a question local.