[SandroMaglione]

Two agents given a written brief tried pixel bake, judged its shading worse than their own, and each wrote a projection script to choose the look themselves. The maintainer liked both results. So bake keeps the geometry and leaves those choices to the model.

New fields

• steps on a part: a ramp step per facing (top, left, right), used instead of the light.
• line on a part: a line where the part meets a part behind it, drawn on that part. It can be true (the outline's color), "step" (one step darker), or a color.
• rows on a face: a picture drawn flat, laid on the face, and turning with the model. Doors, windows, dials.
• "map": true: writes <name>.map.json, with each pixel's part, face, facing, depth, and place on its face, so a script can restyle the art instead of rebuilding a renderer.
• camera.across / camera.down: the camera in a game's own terms. The sun stays in the picture's axes, so these draw exactly what the matching turned camera draws (tested pixel for pixel).

Fix: the outline broke at a sharp tip, such as a roof's eave. The lone-pixel cleanup was removing outline pixels that touch the rest of the outline only at a corner. Those are now kept, and joined through the empty corner.

The skill's bake bullet says the look is the agent's too, and PIXEL-ART.md records why. The changesets are a minor for tools and a patch for core's skill.

Tested with an agent. The same Landkeep brief went to a fresh Opus 5.5 High agent with this build and the updated skill:

• It baked all five pieces with steps, line, rows, and across/down, and wrote no renderer of its own. Run 1, before this change, wrote a 195-line one.
• It took 23 minutes, and pixel lint is clean on all five.
• Its remaining wishes, not in this PR:
  • a tight frame option;
  • staging a piece on a tile;
  • palette letters in rows without declaring them as materials;
  • a gable roof whose end walls take the wall material;
  • a warning when a face is seen edge-on.

Verify:

• pnpm run check: typecheck, lint, type tests and examples pass. Some tests timed out under a machine load of 100+. Rerun at normal load, packages/tools and every file that had failed pass: 452 of 452.
• packages/tools/test/bake.test.ts has 10 new tests: parsing, steps per facing, lines, face rows, . in rows, the map, axes against the turned camera, the outline at a tip, and the map file in the CLI.

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