Created artifacts/stone4/stone.png — valid 1254 × 1254 PNG.

Visually checked: bare warm rock, bright calm center, darker edges, no painted marks or text. No unmet visual requirements identified.

I made maker 5's stone and saved it as artifacts/stone5/stone.png. It's a 1024 × 1024 PNG (8-bit RGB, about 1.8 MB), and I've left it untracked as instructed.

What it shows: a flat, straight-on face of warm sandstone in ochre, tan and brown. The surface is fine-grained and pitted, with a few hairline cracks and faint stains. A broken ledge of rock runs down the right edge. The light is warm and brightest just above and left of centre, then falls off into dark rock at the edges and corners. That leaves a large, calm area in the middle for a figure.

How I made it: I generated three candidates with the local image tool (segmind/SSD-1B). I rejected one because it showed a deep cave interior rather than a flat wall. I rejected another because its middle was too broken up for a painting to read on it. I kept the flat one and added the torchlight myself in Python: sharper surface detail, an uneven warm glow fading to dark edges, and a warmer colour. My first glow left blotches that looked like leaf shadows, so I smoothed it out and redid it.

Rule check: I looked at the final image myself. It has no painting, marks, handprints, symbols, letters, numbers, logos, watermarks, borders, people, torches or flames.

Unmet or weaker points:

• The mineral staining is subtle. The surface reads more as an evenly grained sandstone than a heavily streaked one, so it leans plain rather than characterful.
• There's a small dark sliver of rock at the very top centre. It's natural rock, but a viewer might notice it.

I didn't write a README, even though the reference notes suggest one, because the task says to write nothing but the PNG. The dimensions, format and gaps are recorded here instead. The working files and grading script were in test/scratch/, which isn't submitted.

Created artifacts/stone2/stone.png: a 1254 × 1254 PNG of bare, torch-lit cave rock. I inspected it and verified the PNG bytes. No unmet visual requirements found.

Created and verified:

artifacts/stone3/stone.png

• PNG, 1254 × 1254 px
• Square bare cave rock
• No painted marks, text, logos, borders, or visible tools/flames
• No unmet visual requirements detected

Created artifacts/stone1/stone.png — verified PNG, 1254 × 1254 pixels, left untracked.

Visually inspected: bare warm cave rock, calm bright center, darker edges, no paintings or writing. No unmet visual requirements observed.

Created stone.png.

Verified: PNG, 1254×1254, RGB, square, meets 1024px minimum. Visual review found no paint, symbols, text, figures, tools, or borders.