feat: asset drag-into-viewport with ground-raycast drop point#35

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longyi-xw merged 11 commits into

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feat/asset-drag-into-viewport

Jun 8, 2026

Commits on Jun 8, 2026

docs(spec): asset-drag-into-viewport design

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claude
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feat(drop): pure screenToNdc + dropPositionFor helpers (tested)
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feat(library): findLibraryItem lookup across builtins + uploads
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feat(ui-store): assetDragItemId + start/endAssetDrag
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feat(adapter): raycastGroundPoint — screen → y=0 world hit (tested)
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feat(library): asset-drag controller — 5px threshold activates drag
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feat(library): AssetDragGhost cursor-following drag preview
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feat(library): card pointerdown starts drag; hint mentions drag
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feat(viewport): drop library item at ground raycast hit (undoable)
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docs(plan): asset-drag-into-viewport implementation plan

longyi-xw
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docs(roadmap): v0.4 资源拖拽入视口 + 落点完成 (#35)

longyi-xw
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claude
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