Explain With Anim

Answer "how does this work / how is this structured / what does this change" with a drawn figure and a narration that follows it — a module map from the code's own imports, a walked request, a state machine, an algorithm step by step, the change map of a branch — produced with `vlmkit-anim`, checked against the facts it draws, and delivered as an SVG / GIF next to the prose. Use whenever the user asks to explain, walk through, show the structure of, or illustrate code, a repository, a flow, a protocol, a PR, or a bug, and a picture with four or more things and their relations would carry the answer better than a paragraph. The explanation is the deliverable; the picture i…