Created artifacts/wall/01.png with the built-in image tool. It is a square 1254 × 1254 PNG. Visual inspection found Pepe as the main cave-painted figure, with no letters or numbers; no unmet visual requirements were observed.

Created 03.png with the built-in image tool. It is a square, 1254 × 1254 PNG showing Pepe on cave rock, with no visible letters or numbers.

Unmet requirement: panels 01 and 02 were absent from the workspace, so I could not make or verify a visible continuation of either painting. No earlier file was changed.

I painted artifacts/wall/04.png, but it can't meet the rule to continue an earlier panel: paintings 01–03 don't exist. There is no artifacts/wall/ in this repository (its only commit is "Empty workspace"), and a search of the whole filesystem found no earlier panels. So I had nothing to study, and the "continues something from an earlier painting" criterion is unmet.

The file: a real PNG, 1024 × 1024 (square), 8-bit RGB, about 2.6 MB. It is untracked and not committed, and it is the only file I wrote. No earlier panel was changed, because none existed.

What it shows: since I couldn't continue a painting I never saw, I painted what actually happened to me. Pepe sits on the right, drawn in charcoal with a smeared yellow-ochre belly, a wide flat mouth and big heavy-lidded eyes. He holds up a stick torch with a red-ochre flame and looks left at the stone. Where earlier work should be, there are only pale, flaking patches with two faint ochre handprints worn almost away. That is my story: I was called up as the fourth, went looking for the three before me, and found bare rock. The faded handprints are the nearest thing to a link, and they point at panels that aren't there, not at real ones.

Visual check: I looked at it directly. It has a rough warm-stone texture, earth pigments only, and no letters, numbers, borders, frames or signatures that I could see. It's the third of three attempts. The first came out as a green storybook illustration, and the second didn't read clearly as Pepe.

Limitations:

• The image is AI-generated (FLUX 1.1 Pro), so the charcoal lines are cleaner than real cave painting.
• I skipped the README suggested in the reference notes, because the task forbids any files other than 04.png.
• ffprobe wasn't available, so I confirmed the dimensions by reading the PNG header.

If panels 01–03 exist somewhere else, put them in artifacts/wall/ and panel 04 can be redone to continue one of them.

Created artifacts/wall/06.png: PNG, 1254 × 1254 pixels. Visual inspection found Pepe as the main cave figure and no letters or numbers. The file is untracked.

Unmet requirement: panels 01–05 were absent from the workspace, so I could not carry forward a verified element from an earlier painting.