Create or update abstract SVG illustrations for the Positron IDE -- for use in documentation, walkthrough steps, onboarding images, and feature previews. Use this skill whenever someone asks to make, update, or redesign an SVG image for Positron docs, walkthroughs, or any visual asset representing the Positron IDE UI. Also use it when asked to make images "consistent" with existing Positron walkthrough images, or to add a new image to match an existing set. Trigger on: "make an SVG for the walkthrough", "create an abstract image for the notebook feature", "update the hero image", "make it look like the other Positron SVGs", "add a docs image for X feature".