Seven hours on a plane, zero internet, and a curiosity about local AI coding. That’s how I found myself downloading 13GB of AI models in an airport lounge, preparing for what would become an accidental experiment in offline development. This wasn’t a research project or a formal comparison of existing solutions. I was heading back from vacation with a long flight ahead and wanted to avoid getting bored. The idle question nagging at me: what would it be like to have a coding assistant tota...