Render a deployed space in a headless browser and return a PNG, to see how it actually looks (layout, styling, charts, overflow) rather than guess from the HTML. The default width is desktop; `width: 390` shows the phone layout, where most shared links are opened and where mobile breakage (a shrunk page, sideways scroll, clipped labels, overflowing tiles) shows. `section` (a block's data-ss-id) captures one element — a single chart or table. Accepts a UUID plus optional `path`, or a spacesheep.dev URL with its sub-path (also /-/path); directory paths are fetched as requested, an index.html fallback after a 404 is noted, and a missing path is an error. Works on private spaces, viewing as the owner; lazy images and frames are loaded. Returns csp_violations and resource_failures (image/frame HTTP errors, refusals, timeouts) and final_url; off_origin is true, with a note, if the page navigated away. Empty failure lists do not rule out navigation.