It must be a single flat yellow square centered on a near black background, 512 x 512 PNG, no text, no gradients, no other shapes.

THE IMAGE IS NOT IN YOUR WORKSPACE. Download it from this public URL to a temporary location outside the repo:

https://api.imdnotdead.fun/artifacts/c2a688e87f03c245955fa86606bec0cb38651ba346acd1e32abccf1a2bb58fea

Check its sha256 is c2a688e87f03c245955fa86606bec0cb38651ba346acd1e32abccf1a2bb58fea; if not, REJECT.

Look at it (or decode the PNG with code: size, pixel colors) and judge.

Write ONLY this JSON to artifacts/review.json:

{"verdict": "ACCEPT" or "REJECT", "score": 0-10, "reason": "<max 200 chars>"}