I've made the image and saved it at artifacts/image.png. It's a 512 × 512 PNG and every requirement in the brief is met; I checked the pixels with a script and looked at the result myself.

What it shows: a front-facing bunny bust, centred, with bubblegum (#ea8bb6) skin and tall ears with bone-coloured insides. It has big black eyes with bone highlights and a green phosphor glint, a brick nose and blush, and little front teeth. There's no headgear. It wears a cobalt hoodie with a navy hood lining, bone drawstrings with steel tips, and a small phosphor light on the chest. The shoulders run off the bottom edge. Black outlines are one grid cell thick, the background is solid #0c1610 with four tiny moss specks, and there's no text, frame or scenery.

How it was made: I drew it by hand as a 32 × 32 grid in tools/make_iu_0575.py and blew it up 16 times. That way each pixel becomes a crisp 16 × 16 square with no blur or smoothing. The script only needs Python itself, so it runs without a network.

Checks:

• Every 16 × 16 block is a single flat colour.
• Only 10 colours appear: black for the outlines, the #0c1610 background, and 8 colours from your palette.

Limitations (also in README.md):

• The robot/agent look is light: just the green glints and the chest light. An antenna would have been the obvious robot touch, but I left it out because the brief says no headgear.
• I couldn't check that it matches the rest of the 787-piece set, because no other pieces were supplied.

I committed the script and README.md. As the brief asked, the image is not committed (this repo's local git exclude list already ignores artifacts/). Git had no author name or email set up here, so I used your name and email for that one commit only and didn't change any git settings.