Marketplace screenshots for the VS Code extension listing.

Current set:
  chat-in-editor.png  — hero. igni panel open beside a source file,
                        demonstrating the "chat next to your editor"
                        workflow. Full-width VS Code, project tree
                        visible, chat streaming a response.
  chat-response.png   — supporting. Close-up on the panel with a full
                        markdown answer including code snippets so
                        prospective users can read the actual output
                        quality on the listing.

Anything else you drop here is included in the packaged .vsix (there
is no ``.vscodeignore`` filtering these out) and the listing README
resolves relative paths against the extension package root.

Prefer PNG (marketplace does not render SVG). Retina-scale, ~1600px
wide max — the marketplace downscales cleanly. Animated GIFs work
for hero shots and outperform static PNGs on conversion, but keep
them under ~5MB or the pre-loader punishes them.
