fix: resolve double-click and redownload issues

- Use `e.detail === 2` for double clicks in `DownloadTable.tsx`
- Add `user-select: none` to list items in `index.css`
- Delete existing assets before enqueueing in `redownload` action
- Remove redundant `onDoubleClick` props from `DownloadItem.tsx`

src/components/DownloadItem.tsx

@@ -13,7 +13,6 @@ interface DownloadItemProps {
   setContextMenu: (menu: { x: number; y: number; id: string }) => void;
   handlePause: (id: string) => void;
   handleResume: (item: DownloadItemType) => void;
-  handleDoubleClick: (item: DownloadItemType) => void;
   getCategoryIcon: (category: string) => React.ReactNode;
   isSelected: boolean;
   onClick: (e: React.MouseEvent, item: DownloadItemType) => void;
@@ -26,7 +25,6 @@ export const DownloadItem = React.memo<DownloadItemProps>(({
   setContextMenu,
   handlePause,
   handleResume,
-  handleDoubleClick,
   getCategoryIcon,
   isSelected,
   onClick,
@@ -90,7 +88,6 @@ export const DownloadItem = React.memo<DownloadItemProps>(({
         e.preventDefault();
         setContextMenu({ x: e.clientX, y: e.clientY, id: download.id });
       }}
-      onDoubleClick={() => handleDoubleClick(download)}
     >
       <div className="download-file-cell">
         <span className="shrink-0 text-text-muted">

src/components/DownloadTable.tsx

@@ -189,6 +189,10 @@ export const DownloadTable: React.FC<DownloadTableProps> = ({ filter }) => {
     ? [...filteredDownloads].sort((left, right) => (left.queuePosition ?? 0) - (right.queuePosition ?? 0))
     : filteredDownloads;
   const handleItemClick = (e: React.MouseEvent, item: DownloadItem) => {
+    if (e.detail === 2) {
+      handleDownloadDoubleClick(item);
+      return;
+    }
     if (e.metaKey || e.ctrlKey) {
       const newSelected = new Set(selectedIds);
       if (newSelected.has(item.id)) {
@@ -372,7 +376,6 @@ export const DownloadTable: React.FC<DownloadTableProps> = ({ filter }) => {
                   setContextMenu={handleContextMenu}
                   handlePause={handlePause}
                   handleResume={handleResume}
-                  handleDoubleClick={handleDownloadDoubleClick}
                   getCategoryIcon={getCategoryIcon}
                   isSelected={selectedIds.has(d.id)}
                   onClick={handleItemClick}