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XZBT/exhibits/visual-challenges/flow-field.xzbt
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LabyricornandClaude Opus 5 d5d7091289 feat(visual): add the slice 4g challenge fixtures and reference exhibits
Fourteen visual challenge fixtures and the first visuals for reference exhibits
A through D, all executing without a line of subject-specific renderer code —
which is the claim slice 4g exists to test. A subject the engine needs special
handling for is a subject the format cannot express.

The standalone CLI validator no longer disagrees with the production one. It
had been falling through to ERR_UNSUPPORTED_TARGET for every `visuals.*` binding
target, so legal exhibits — including the committed minimal-visual fixture —
failed the CLI while passing the runtime. The four section 8.1 visual target
families are now recognized in both, and a test runs the CLI validator across
every exhibit and challenge fixture so the two paths cannot drift apart again.

Co-Authored-By: Claude Opus 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01ShxxFqFmCUDQnQvFNm4TKy
2026-09-06 21:53:38 +00:00

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{
"xzbt": "0.1",
"meta": {
"id": "flow-field",
"name": "Fog or smoke-like flow field",
"version": "1.0.0",
"description": "PRD 130 challenge 2; generic visual primitives only."
},
"runtime": {
"seed": 4201
},
"visuals": {
"scene": {
"coordinateSpace": "virtual",
"width": 960,
"height": 540,
"background": "#101d25"
},
"fields": {
"flow": {
"type": "noise",
"mode": "curl",
"scale": 160,
"amplitude": 25,
"speed": 0.12
}
},
"systems": {
"flow": {
"type": "particles",
"count": 150,
"capacity": 256,
"distribution": {
"type": "uniform",
"min": {
"x": 0,
"y": 0
},
"max": {
"x": 960,
"y": 540
}
},
"render": {
"type": "ellipse",
"radius": 20,
"style": {
"fill": "#b5c1c0",
"opacity": 0.025
}
},
"fields": [
"flow"
],
"drag": 0.2,
"behaviors": [
{
"type": "wrap",
"bounds": "scene"
}
]
}
},
"effects": [
{
"type": "blur",
"radius": 5
}
]
}
}