I made artifacts/image.png: a 512 × 512 PNG (8-bit RGB, 3.8 KB) of a bubblegum bunny wearing shades and a UI tee. I looked at the rendered image and checked the file. It is a valid PNG at the right size and uses 9 colours, with no anti-aliasing or gradients.

What it shows: a front-facing bunny bust, centred and symmetric. The ears have lilac insides and the cheeks are lilac too. The shades have a black frame with navy lenses and grey glints. There's a small black nose and one white tooth. The blue tee runs off the bottom edge, with a small white "UI" logo on the chest. Everything has a thick black outline. The background is the solid dark #0c1610 with six single-pixel green specks. There is no text, frame or scenery.

How it was made: a script (tools/make_iu_0138.py) draws it on a 32 × 32 grid and scales it up 16× with hard pixel edges. It uses only standard Python, so nothing extra had to be committed. I didn't use the image-generation tool. Drawing it pixel by pixel guaranteed the exact palette colours and hard edges.

Unmet or partly met requirements (also listed in README.md):

• The outline is pure black (#000000), which isn't one of the 14 palette colours. The brief asks for black outlines, so I used it anyway.
• The logo is a U and an I with no plus sign between them. A plus wouldn't fit legibly at this size.
• I can't compare it against the rest of the 787-piece set, so I can't confirm it fits the collection's look.

The script and README are committed. The image is left untracked for the upload, as required, and the repo's exclude rule already ignores artifacts/.