When dragging a draft formation's anchors, the changes were being
stored in dragFormation and renderedFormations, but not synced
back to draftFormation. When completeDrawing() was called to save,
it used draftFormation.lines_json which still had the original
horizontal line data.
Now _endDrag() checks if the dragged formation is the draft
(tbl_key === draftTblKey) and syncs lines_json back to draftFormation.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
rob
18d773320c