Fix infinite grid lines

[Ayushjhawar8]

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Project	Deployment	Preview	Comments	Updated (UTC)
docs	Ready	Preview	Comment	Nov 15, 2025 3:54pm

[chatgpt-codex-connector]

💡 Codex Review

docs/src/components/CircuitPreview.tsx

Lines 163 to 166 in 8006337

	const threeDUrl = useMemo(() => {
	if (browser3dView && typeof fsMapOrCode === "string") {
	return createPngUrl(fsMapOrCode, "3d")
	}

Pass background_color through browser 3D preview path

The new background_color parameter is appended in the fs-map and manual code paths, but the branch that runs when browser3dView is true still returns createPngUrl(fsMapOrCode, "3d") without adding the same parameter. When the preview uses this shortcut, the generated URL will continue to omit background_color and the infinite grid remains, so the bug the commit intends to fix still reproduces. Forward the color option to createPngUrl or append it to the returned URL to make the behaviour consistent across all branches.

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