fix: use onDragEnd on Reorder.Item instead of onPointerUp on Group

The previous approach used onPointerUp on the Reorder.Group which
fired unreliably — triggering on non-drag clicks and sometimes not
at all after a drag. Moving to onDragEnd on each Reorder.Item gives
clean, predictable drag-to-reorder behavior.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/client/components/CandidateListItem.tsx

@@ -31,6 +31,7 @@ interface CandidateListItemProps {
 	isActive: boolean;
 	onStatusChange: (status: "researching" | "ordered" | "arrived") => void;
 	delta?: CandidateDelta;
+	onDragEnd?: () => void;
 }
 
 const RANK_COLORS = ["#D4AF37", "#C0C0C0", "#CD7F32"]; // gold, silver, bronze
@@ -53,6 +54,7 @@ export function CandidateListItem({
 	isActive,
 	onStatusChange,
 	delta,
+	onDragEnd,
 }: CandidateListItemProps) {
 	const controls = useDragControls();
 	const { weight, price } = useFormatters();
@@ -217,6 +219,7 @@ export function CandidateListItem({
 				value={candidate}
 				dragControls={controls}
 				dragListener={false}
+				onDragEnd={onDragEnd}
 				className={sharedClassName}
 			>
 				{innerContent}