How to use Cline: the open-source agent in your editor

Cline is an open-source coding agent that lives in your editor and terminal, and its whole design is that it proposes every edit and waits for you to approve it. Two things make it worth learning: it plans before it acts, and it connects to almost any model, including a local one at zero per-token cost. This is the whole thing, install to first approved edit, and the three ways to pay for the model behind it.