claude-bot f27c3690e3 Use in-place source move for drag instead of placeholder + display:none ...

The clone-placeholder approach hid the source element with
display:none, which some browsers treat as drag cancellation. The drag
appeared to "not respond at all" to mouse press.

Switch to a simpler approach: keep the source element in the DOM and
move it directly during dragover. Apply a .dragGhost class after the
drag image is captured (via setTimeout 0) so the source becomes a
translucent dashed placeholder at the prospective drop position. drop
just compares the source's current DOM index to its original
data-index.

Also add cursor:grabbing on :active for visible press feedback.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-05-12 14:39:46 +09:00

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