feat(web): upgrade lists to ReUI Table v9 and EventCalendar

Единый kitDataGridTableLayout и ResourcePage/FrameDataGrid на всех списках.
Календарь задач переведён на EventCalendar, lookup — на cascader, у операций появился вид доски.
Удалены settings-7 и самописные DataGridSection/toolbar.

Co-authored-by: Cursor <[email protected]>

apps/web/src/components/reui/data-grid/data-grid-table-dnd-rows.tsx

@@ -1,9 +1,7 @@
-"use client"
-
 import {
   createContext,
-  CSSProperties,
-  ReactNode,
+  memo,
+  useCallback,
   useContext,
   useEffect,
   useId,
@@ -11,15 +9,23 @@ import {
   useRef,
   useState,
 } from "react"
+import type { CSSProperties, ReactNode } from "react"
 import { useDataGrid } from "@/components/reui/data-grid/data-grid"
+import type {
+  DataGridFeatures,
+  DataGridTableInstance,
+} from "@/components/reui/data-grid/data-grid"
 import {
   DataGridTableBase,
   DataGridTableBody,
   DataGridTableBodyRow,
   DataGridTableBodyRowCell,
+  DataGridTableBodyRowExpandded,
   DataGridTableBodyRowSkeleton,
   DataGridTableBodyRowSkeletonCell,
   DataGridTableEmpty,
+  DataGridTableFillBodyCell,
+  DataGridTableFillHeadCell,
   DataGridTableFoot,
   DataGridTableHead,
   DataGridTableHeadRow,
@@ -31,23 +37,33 @@ import {
 import {
   closestCenter,
   DndContext,
+  DragOverlay,
   KeyboardSensor,
   MouseSensor,
   TouchSensor,
-  UniqueIdentifier,
   useSensor,
   useSensors,
+  type CollisionDetection,
+  type DragCancelEvent,
   type DragEndEvent,
+  type DragMoveEvent,
+  type DragOverEvent,
+  type DragStartEvent,
   type Modifier,
+  type UniqueIdentifier,
 } from "@dnd-kit/core"
 import { restrictToVerticalAxis } from "@dnd-kit/modifiers"
 import {
   SortableContext,
+  sortableKeyboardCoordinates,
   useSortable,
   verticalListSortingStrategy,
+  type SortingStrategy,
 } from "@dnd-kit/sortable"
 import { CSS } from "@dnd-kit/utilities"
-import { Cell, flexRender, HeaderGroup, Row } from "@tanstack/react-table"
+import { flexRender } from "@tanstack/react-table"
+import type { Cell, HeaderGroup, Row, Table } from "@tanstack/react-table"
+import { createPortal } from "react-dom"
 
 import { cn } from "@evobgp/ui/lib/utils"
 import { Button } from "@evobgp/ui/components/button"
@@ -60,20 +76,65 @@ const SortableRowContext = createContext<Pick<
   "attributes" | "listeners"
 > | null>(null)
 
-function DataGridTableDndRowHandle({ className }: { className?: string }) {
+/**
+ * Tree metadata attached to every sortable row, readable from
+ * `active.data.current` / `over.data.current` in any drag event. Cross-parent
+ * drops can be resolved from it without re-deriving the shape of the table.
+ */
+type DataGridTableDndRowData = {
+  type: "data-grid-row"
+  /** Tree depth, 0 for root rows. */
+  depth: number
+  /** Index within the parent's children, or within the root rows. */
+  index: number
+  /** Parent row id, or null for root rows. */
+  parentId: string | null
+}
+
+/**
+ * Per-row render slot for drop indicators and depth guides. The returned node
+ * is positioned over the row, so it never adds a column, shifts striping, or
+ * gets clipped by a truncating resizable cell.
+ */
+type DataGridTableDndRowDecoration<TData extends object> = (context: {
+  row: Row<DataGridFeatures, TData>
+  isDragging: boolean
+  isOver: boolean
+}) => ReactNode
+
+function DataGridTableDndRowHandle({
+  className,
+  disabled,
+  disabledLabel = "Reordering unavailable",
+}: {
+  className?: string
+  /**
+   * Renders the grip inert instead of withdrawing it. A grid that reorders on
+   * one truth (manual order) and sorts on another cannot honour both at once,
+   * but dropping the handle entirely collapses the gutter and reads as broken
+   * rather than as unavailable. Keep the column's shape, mute the control.
+   */
+  disabled?: boolean
+  /** Announced and shown on hover in place of the drag affordance. */
+  disabledLabel?: string
+}) {
   const context = useContext(SortableRowContext)
 
-  if (!context) {
-    // Fallback if context is not available (shouldn't happen in normal usage)
+  if (!context || disabled) {
     return (
       <Button
         variant="ghost"
         size="icon-sm"
         className={cn(
           "size-7 cursor-grab opacity-70 hover:bg-transparent hover:opacity-100 active:cursor-grabbing",
+          // The Button's own disabled treatment supplies the muting; only the
+          // cursor needs saying, so the grip reads as unavailable rather than
+          // merely unresponsive.
+          disabled && "cursor-not-allowed",
           className
         )}
-        aria-label="Перетащить строку"
+        aria-label={disabled ? disabledLabel : "Drag to reorder row"}
+        title={disabled ? disabledLabel : undefined}
         disabled
       >
         <GripHorizontalIcon aria-hidden="true" />
@@ -89,7 +150,7 @@ function DataGridTableDndRowHandle({ className }: { className?: string }) {
         "size-7 cursor-grab opacity-70 hover:bg-transparent hover:opacity-100 active:cursor-grabbing",
         className
       )}
-      aria-label="Перетащить строку"
+      aria-label="Drag to reorder row"
       {...context.attributes}
       {...context.listeners}
     >
@@ -98,60 +159,357 @@ function DataGridTableDndRowHandle({ className }: { className?: string }) {
   )
 }
 
-function DataGridTableDndRow<TData>({ row }: { row: Row<TData> }) {
+/**
+ * The rows do not move while one is being carried.
+ *
+ * Sliding the siblings apart opens a gap the carried row could go into, which
+ * reads well in a list of identical rows and badly in a table: the gap is the
+ * height of the row you are holding, so with rows of unequal height it never
+ * matches the slot it claims to be, and the row you picked up slides away from
+ * where it started - which is exactly the position you need to remember if you
+ * decide not to drop it.
+ *
+ * Holding everything still keeps the origin legible, and nothing is lost: the
+ * DragOverlay clone follows the pointer and the drop indicator names the seam.
+ * Pass `verticalListSortingStrategy` as `sortingStrategy` for the old feel.
+ */
+const holdRowsInPlaceStrategy: SortingStrategy = () => null
+
+function DataGridTableDndRow<TData extends object>({
+  row,
+  renderRowDecoration,
+  dropIndicator = true,
+}: {
+  row: Row<DataGridFeatures, TData>
+  renderRowDecoration?: DataGridTableDndRowDecoration<TData>
+  dropIndicator?: boolean
+}) {
+  const rowData: DataGridTableDndRowData = {
+    type: "data-grid-row",
+    depth: row.depth,
+    index: row.index,
+    parentId: row.getParentRow()?.id ?? null,
+  }
+
   const {
     transform,
-    transition,
     setNodeRef,
     isDragging,
+    isOver,
     attributes,
     listeners,
+    index,
+    activeIndex,
+    overIndex,
   } = useSortable({
     id: row.id,
+    data: rowData,
   })
 
+  // Which edge of THIS row the carried row would land on, or null when it is
+  // not the drop target. Nothing slides apart any more, so the bar is the only
+  // thing that says where the drop goes: it marks the row at the destination
+  // index, on the side the carried row comes to rest.
+  //
+  // Dragging down it lands after the target, dragging up before it, so the
+  // edge follows the direction of travel.
+  const dropEdge =
+    dropIndicator && activeIndex !== -1 && index === overIndex && !isDragging
+      ? activeIndex < overIndex
+        ? "bottom"
+        : "top"
+      : null
+
   const style: CSSProperties = {
     transform: CSS.Transform.toString(transform),
-    transition: transition,
-    opacity: isDragging ? 0.8 : 1,
+    // dnd-kit's transition is deliberately dropped. A transition on a transform
+    // property of a `tr` does not merely fail to animate in Chrome, it stops the
+    // transform applying at all: the element sits at the start value forever.
+    // The drag source escapes it because dnd-kit disables its own transition
+    // while it is being dragged, which is why the carried row used to be the
+    // ONLY one that moved and every other row silently refused to open a gap.
+    // Displacement therefore lands in one step, which is what a table wants.
     zIndex: isDragging ? 1 : 0,
     position: "relative",
     cursor: isDragging ? "grabbing" : undefined,
+    // The row you are holding is drawn by the DragOverlay, so the one left
+    // behind is not a second copy of it - it is the slot you came from, and it
+    // stays exactly where it was. Fading alone read as "this row is busy";
+    // the outline says "this is the space you are moving out of", which is the
+    // thing you need if you change your mind mid-drag.
+    ...(isDragging && {
+      opacity: 0.4,
+      // Inset so the dashes sit inside the row box and cannot be clipped by
+      // the neighbouring row's border.
+      outline: "1px dashed var(--border)",
+      outlineOffset: "-1px",
+    }),
   }
 
+  const decoration = renderRowDecoration?.({ row, isDragging, isOver })
+
   return (
     <SortableRowContext.Provider value={{ attributes, listeners }}>
       <DataGridTableBodyRow row={row} dndRef={setNodeRef} dndStyle={style}>
-        {row.getVisibleCells().map((cell: Cell<TData, unknown>) => {
-          return (
-            <DataGridTableBodyRowCell cell={cell} key={cell.id}>
-              {flexRender(cell.column.columnDef.cell, cell.getContext())}
-            </DataGridTableBodyRowCell>
-          )
-        })}
+        {row
+          .getVisibleCells()
+          .map((cell: Cell<DataGridFeatures, TData, unknown>, index, cells) => {
+            return (
+              <DataGridTableBodyRowCell cell={cell} key={cell.id}>
+                {flexRender(cell.column.columnDef.cell, cell.getContext())}
+                {decoration && index === cells.length - 1 ? (
+                  // Rides inside the last cell rather than in a `td` of its own.
+                  // An absolutely positioned `td` is still a cell as far as table
+                  // layout is concerned, so it added a NINTH column with no width
+                  // of its own, and under `table-layout: fixed` that new column
+                  // swallowed the whole surplus the real columns had been sharing
+                  // — every column snapped back to its declared size and the row's
+                  // content visibly narrowed the moment a drag began. A plain
+                  // element adds no column. It still anchors to the ROW, because
+                  // the row is the nearest positioned ancestor, so the decoration
+                  // spans the full width and is not clipped by the cell.
+                  <div
+                    aria-hidden="true"
+                    data-slot="data-grid-table-row-decoration"
+                    className="pointer-events-none absolute inset-0"
+                  >
+                    {decoration}
+                  </div>
+                ) : null}
+                {dropEdge && index === cells.length - 1 ? (
+                  // Same anchoring trick as the decoration above: a plain
+                  // element inside the last cell, so it adds no column and
+                  // cannot disturb `table-layout: fixed`. It spans the row
+                  // because the row is the nearest positioned ancestor.
+                  <div
+                    aria-hidden="true"
+                    data-slot="data-grid-table-row-drop-indicator"
+                    data-edge={dropEdge}
+                    className="pointer-events-none absolute inset-0 z-20"
+                  >
+                    {/* Two solid pixels down the leading edge, the same marker
+                        the tree drag uses for its drop target. A wash across
+                        the row has to stay faint enough not to read as a
+                        selected row, and in the achromatic styles primary
+                        carries no chroma at all, so faint plus colourless is
+                        just grey. The bar reads at any weight and leaves the
+                        row's own background to hover and selection.
+
+                        The bar is the whole indicator: the gap the rows have
+                        already opened says which side, so a rule across the
+                        seam as well only competes with the row borders it sits
+                        between. `data-edge` still carries the direction for
+                        anyone styling their own. */}
+                    <span className="bg-primary absolute inset-y-0 start-0 w-0.5" />
+                  </div>
+                ) : null}
+              </DataGridTableBodyRowCell>
+            )
+          })}
+        <DataGridTableFillBodyCell />
       </DataGridTableBodyRow>
+      {row.getIsExpanded() && <DataGridTableBodyRowExpandded row={row} />}
     </SortableRowContext.Provider>
   )
 }
 
-function DataGridTableDndRows<TData>({
+function DataGridTableDndRowsBody<TData extends object>({
+  table,
+  dataIds,
+  renderRowDecoration,
+  dropIndicator,
+  sortingStrategy,
+}: {
+  table: DataGridTableInstance<TData>
+  dataIds: UniqueIdentifier[]
+  renderRowDecoration?: DataGridTableDndRowDecoration<TData>
+  dropIndicator?: boolean
+  sortingStrategy: SortingStrategy
+}) {
+  const { isLoading, props } = useDataGrid()
+  const pagination = table.state.pagination
+
+  if (props.loadingMode === "skeleton" && isLoading && pagination?.pageSize) {
+    return (
+      <>
+        {Array.from({ length: pagination.pageSize }).map((_, rowIndex) => (
+          <DataGridTableBodyRowSkeleton key={rowIndex}>
+            {table.getVisibleFlatColumns().map((column, colIndex) => {
+              return (
+                <DataGridTableBodyRowSkeletonCell
+                  column={column}
+                  key={colIndex}
+                >
+                  {column.columnDef.meta?.skeleton}
+                </DataGridTableBodyRowSkeletonCell>
+              )
+            })}
+            <DataGridTableFillBodyCell />
+          </DataGridTableBodyRowSkeleton>
+        ))}
+      </>
+    )
+  }
+
+  if (!table.getRowModel().rows.length) return <DataGridTableEmpty />
+
+  return (
+    <SortableContext items={dataIds} strategy={sortingStrategy}>
+      {table.getRowModel().rows.map((row: Row<DataGridFeatures, TData>) => {
+        return (
+          <DataGridTableDndRow
+            row={row}
+            renderRowDecoration={renderRowDecoration}
+            dropIndicator={dropIndicator}
+            key={row.id}
+          />
+        )
+      })}
+    </SortableContext>
+  )
+}
+
+/**
+ * Memoized body rows: skip re-renders during active column resize.
+ * Column widths update via CSS variables on the <table> element,
+ * so the browser handles width changes without React re-renders.
+ */
+const MemoizedDataGridTableDndRowsBody = memo(
+  DataGridTableDndRowsBody,
+  (_prev, next) => !!next.table.state.columnResizing.isResizingColumn
+) as typeof DataGridTableDndRowsBody
+
+function DataGridTableDndRows<TData extends object>({
   handleDragEnd,
   dataIds,
   footerContent,
+  collisionDetection = closestCenter,
+  modifiers,
+  sortingStrategy = holdRowsInPlaceStrategy,
+  renderRowDecoration,
+  dropIndicator = true,
+  onDragStart,
+  onDragMove,
+  onDragOver,
+  onDragCancel,
 }: {
   handleDragEnd: (event: DragEndEvent) => void
   dataIds: UniqueIdentifier[]
   footerContent?: ReactNode
+  /** Overrides the default `closestCenter` strategy. */
+  collisionDetection?: CollisionDetection
+  /**
+   * Replaces the default axis restriction, e.g. drop `restrictToVerticalAxis`
+   * to allow the horizontal gesture that tree re-parenting relies on. The
+   * table container clamp is always applied after these, so a dragged row
+   * cannot leave the grid.
+   */
+  modifiers?: Modifier[]
+  /**
+   * Replaces the default `verticalListSortingStrategy`. Return null from a
+   * strategy to leave every row exactly where it is. A tree needs that: its drop
+   * is either INTO the hovered row or BETWEEN two rows, and which one it is
+   * flips as the pointer crosses a single row, so a gap that opens for one and
+   * shuts for the other flickers the whole surface. Such a caller draws its own
+   * insertion line instead, and pairs this with a modifier that holds the
+   * carried row still, since a gap nothing moves into is just a hole.
+   */
+  sortingStrategy?: SortingStrategy
+  /** Per-row slot for drop indicators and depth guides. */
+  renderRowDecoration?: DataGridTableDndRowDecoration<TData>
+  /**
+   * Draws a line on the seam the carried row would land on. On by default;
+   * pass `false` when `renderRowDecoration` paints its own insertion affordance
+   * and the two would compete.
+   */
+  dropIndicator?: boolean
+  onDragStart?: (event: DragStartEvent) => void
+  onDragMove?: (event: DragMoveEvent) => void
+  onDragOver?: (event: DragOverEvent) => void
+  onDragCancel?: (event: DragCancelEvent) => void
 }) {
-  const { table, isLoading, props } = useDataGrid()
-  const pagination = table.getState().pagination
+  const { table, props } = useDataGrid<TData>()
   const tableContainerRef = useRef<HTMLDivElement>(null)
   const [isDraggingRow, setIsDraggingRow] = useState(false)
+  // The overlay is portalled to the document body. dnd-kit renders DragOverlay
+  // in place, and it positions with `position: fixed` against viewport
+  // coordinates - so any ancestor that establishes a containing block for fixed
+  // descendants silently re-anchors it. `content-visibility`, `contain`,
+  // `transform`, `filter` and `will-change` all do that, and the first two are
+  // exactly what a card grid uses to defer off-screen work. The clone then
+  // lands offset by that ancestor's own top/left, and the container clamp
+  // below mis-clamps too, because its rects are measured in viewport space.
+  //
+  // Resolved in an effect rather than read at render so the server and the
+  // first client render agree. A drag cannot start before hydration, so the
+  // overlay being absent for one frame costs nothing.
+  const [portalTarget, setPortalTarget] = useState<HTMLElement | null>(null)
+
+  useEffect(() => {
+    setPortalTarget(document.body)
+  }, [])
+  // The row being carried, plus the column widths measured off the header the
+  // moment the drag starts. The clone lives outside the table, so it has no
+  // columns of its own and has to be told what they are.
+  const [carried, setCarried] = useState<{
+    id: UniqueIdentifier
+    width: number
+    height: number
+    columns: number[]
+  } | null>(null)
+
+  const pickUpRow = useCallback((id: UniqueIdentifier) => {
+    const container = tableContainerRef.current
+    const head = container?.querySelector("thead tr")
+    if (!container || !head) {
+      setCarried(null)
+      return
+    }
+
+    // The clone has to be exactly as tall as the row it was lifted from.
+    // A fixed height reads as the grid growing under the pointer the moment
+    // you pick a row up, and it is wrong in both directions: rows whose
+    // content wraps are taller than any constant, and dense rows are shorter.
+    const source = Array.from(
+      container.querySelectorAll<HTMLElement>("tbody tr[data-row-id]")
+    ).find((candidate) => candidate.dataset.rowId === String(id))
+    const height = source?.getBoundingClientRect().height ?? 0
+
+    // The fill cell is a header-only spacer that soaks up the surplus a column
+    // resize leaves behind, and the clone renders data cells only. Measuring it
+    // in would make the clone's table wider than the cells it actually holds,
+    // and `table-fixed` hands that orphaned width back out across every column
+    // -- the carried row comes out visibly wider than the row it was lifted
+    // from. So the width is the sum of what we render, never the header's own.
+    const columns = Array.from(head.children)
+      .filter(
+        (cell) =>
+          cell.getAttribute("data-slot") !== "data-grid-table-fill-head-cell"
+      )
+      .map((cell) => cell.getBoundingClientRect().width)
+
+    setCarried({
+      id,
+      width: columns.reduce((total, width) => total + width, 0),
+      height,
+      columns,
+    })
+  }, [])
+
+  const carriedRow = carried
+    ? table
+        .getRowModel()
+        .rows.find((row: Row<DataGridFeatures, TData>) => row.id === carried.id)
+    : undefined
 
   const sensors = useSensors(
     useSensor(MouseSensor, {}),
     useSensor(TouchSensor, {}),
-    useSensor(KeyboardSensor, {})
+    // Keyboard reordering moves one sortable position per keypress instead
+    // of the sensor's raw 25px default.
+    useSensor(KeyboardSensor, {
+      coordinateGetter: sortableKeyboardCoordinates,
+    })
   )
 
   useEffect(() => {
@@ -170,7 +528,7 @@ function DataGridTableDndRows<TData>({
     }
   }, [isDraggingRow])
 
-  const modifiers = useMemo(() => {
+  const resolvedModifiers = useMemo(() => {
     const restrictToTableContainer: Modifier = ({
       transform,
       draggingNodeRect,
@@ -189,25 +547,48 @@ function DataGridTableDndRows<TData>({
 
       return {
         ...transform,
-        x: Math.max(minX, Math.min(maxX, x)),
+        // The horizontal rail only engages while the default axis restriction
+        // is in force. A row is exactly as wide as the viewport, so minX and
+        // maxX both collapse to 0 and clamping x erases it entirely: harmless
+        // under restrictToVerticalAxis, which zeroes x anyway, but fatal for a
+        // caller that replaced the restriction precisely to READ x, as a tree
+        // does to resolve drop depth. Vertical is railed either way, which is
+        // what actually keeps a dragged row inside the grid.
+        x: modifiers ? x : Math.max(minX, Math.min(maxX, x)),
         y: Math.max(minY, Math.min(maxY, y)),
       }
     }
 
-    return [restrictToVerticalAxis, restrictToTableContainer]
-  }, [])
+    // The container clamp is a safety rail rather than a policy, so it stays
+    // applied even when the caller replaces the axis restriction.
+    return [
+      ...(modifiers ?? [restrictToVerticalAxis]),
+      restrictToTableContainer,
+    ]
+  }, [modifiers])
 
   return (
     <DndContext
       id={useId()}
-      collisionDetection={closestCenter}
-      modifiers={modifiers}
-      onDragCancel={() => setIsDraggingRow(false)}
+      collisionDetection={collisionDetection}
+      modifiers={resolvedModifiers}
+      onDragCancel={(event) => {
+        setIsDraggingRow(false)
+        setCarried(null)
+        onDragCancel?.(event)
+      }}
       onDragEnd={(event) => {
         setIsDraggingRow(false)
+        setCarried(null)
         handleDragEnd(event)
       }}
-      onDragStart={() => setIsDraggingRow(true)}
+      onDragMove={onDragMove}
+      onDragOver={onDragOver}
+      onDragStart={(event) => {
+        setIsDraggingRow(true)
+        pickUpRow(event.active.id)
+        onDragStart?.(event)
+      }}
       sensors={sensors}
     >
       <DataGridTableViewport
@@ -222,38 +603,43 @@ function DataGridTableDndRows<TData>({
           <DataGridTableHead>
             {table
               .getHeaderGroups()
-              .map((headerGroup: HeaderGroup<TData>, index) => {
-                return (
-                  <DataGridTableHeadRow key={index} rowId={headerGroup.id}>
-                    {headerGroup.headers.map((header, index) => {
-                      const { column } = header
+              .map(
+                (headerGroup: HeaderGroup<DataGridFeatures, TData>, index) => {
+                  return (
+                    <DataGridTableHeadRow key={index} rowId={headerGroup.id}>
+                      {headerGroup.headers.map((header, index) => {
+                        const { column } = header
 
-                      return (
-                        <DataGridTableHeadRowCell header={header} key={index}>
-                          {header.isPlaceholder ? null : props.tableLayout
-                              ?.columnsResizable && column.getCanResize() ? (
-                            <div className="truncate">
-                              {flexRender(
+                        return (
+                          <DataGridTableHeadRowCell header={header} key={index}>
+                            {header.isPlaceholder ? null : props.tableLayout
+                                ?.columnsResizable && column.getCanResize() ? (
+                              <>
+                                {flexRender(
+                                  header.column.columnDef.header,
+                                  header.getContext()
+                                )}
+                              </>
+                            ) : (
+                              flexRender(
                                 header.column.columnDef.header,
                                 header.getContext()
-                              )}
-                            </div>
-                          ) : (
-                            flexRender(
-                              header.column.columnDef.header,
-                              header.getContext()
-                            )
-                          )}
-                          {props.tableLayout?.columnsResizable &&
-                            column.getCanResize() && (
-                              <DataGridTableHeadRowCellResize header={header} />
+                              )
                             )}
-                        </DataGridTableHeadRowCell>
-                      )
-                    })}
-                  </DataGridTableHeadRow>
-                )
-              })}
+                            {props.tableLayout?.columnsResizable &&
+                              column.getCanResize() && (
+                                <DataGridTableHeadRowCellResize
+                                  header={header}
+                                />
+                              )}
+                          </DataGridTableHeadRowCell>
+                        )
+                      })}
+                      <DataGridTableFillHeadCell />
+                    </DataGridTableHeadRow>
+                  )
+                }
+              )}
           </DataGridTableHead>
 
           {(props.tableLayout?.stripped || !props.tableLayout?.rowBorder) && (
@@ -261,35 +647,13 @@ function DataGridTableDndRows<TData>({
           )}
 
           <DataGridTableBody>
-            {props.loadingMode === "skeleton" &&
-            isLoading &&
-            pagination?.pageSize ? (
-              Array.from({ length: pagination.pageSize }).map((_, rowIndex) => (
-                <DataGridTableBodyRowSkeleton key={rowIndex}>
-                  {table.getVisibleFlatColumns().map((column, colIndex) => {
-                    return (
-                      <DataGridTableBodyRowSkeletonCell
-                        column={column}
-                        key={colIndex}
-                      >
-                        {column.columnDef.meta?.skeleton}
-                      </DataGridTableBodyRowSkeletonCell>
-                    )
-                  })}
-                </DataGridTableBodyRowSkeleton>
-              ))
-            ) : table.getRowModel().rows.length ? (
-              <SortableContext
-                items={dataIds}
-                strategy={verticalListSortingStrategy}
-              >
-                {table.getRowModel().rows.map((row: Row<TData>) => {
-                  return <DataGridTableDndRow row={row} key={row.id} />
-                })}
-              </SortableContext>
-            ) : (
-              <DataGridTableEmpty />
-            )}
+            <MemoizedDataGridTableDndRowsBody
+              table={table}
+              dataIds={dataIds}
+              renderRowDecoration={renderRowDecoration}
+              dropIndicator={dropIndicator}
+              sortingStrategy={sortingStrategy}
+            />
           </DataGridTableBody>
 
           {footerContent && (
@@ -297,8 +661,75 @@ function DataGridTableDndRows<TData>({
           )}
         </DataGridTableBase>
       </DataGridTableViewport>
+
+      {/* The row you are actually holding. It is a real clone rendered outside
+          the table, which is the only way a dragged row can follow the pointer
+          without disturbing the grid: it adds no cell, so it cannot alter the
+          column widths, and it floats above the rows rather than through them.
+          Its presence also tells dnd-kit to stop translating the source row, so
+          the row left behind simply dims in place.
+
+          Portalled to the body so the fixed positioning resolves against the
+          viewport wherever the grid is mounted. React context crosses a portal,
+          so DndContext still reaches it. */}
+      {portalTarget
+        ? createPortal(
+            <DragOverlay dropAnimation={null}>
+              {carried && carriedRow ? (
+                <table
+                  aria-hidden="true"
+                  style={{ width: carried.width, tableLayout: "fixed" }}
+                  className="bg-background border-border pointer-events-none cursor-grabbing rounded-md border shadow-lg"
+                >
+                  <tbody>
+                    {/* Padding rides on the inner element, not the cell. A `td` can
+                  never render narrower than its own horizontal padding, so a
+                  column resized below that would silently widen here and the
+                  clone would stop matching the row it came from. Height comes
+                  from the measured source row for the same reason the widths
+                  do: the clone has no row of its own to inherit it from. */}
+                    <tr
+                      style={{ height: carried.height || undefined }}
+                      className="[&>td]:p-0 [&>td]:align-middle"
+                    >
+                      {carriedRow
+                        .getVisibleCells()
+                        .map(
+                          (
+                            cell: Cell<DataGridFeatures, TData, unknown>,
+                            index: number
+                          ) => (
+                            <td
+                              key={cell.id}
+                              // Falls back to the column's own size so an unforeseen
+                              // header/cell count mismatch degrades to a real width
+                              // rather than to `auto`.
+                              style={{
+                                width:
+                                  carried.columns[index] ??
+                                  cell.column.getSize(),
+                              }}
+                            >
+                              <div className="truncate px-3">
+                                {flexRender(
+                                  cell.column.columnDef.cell,
+                                  cell.getContext()
+                                )}
+                              </div>
+                            </td>
+                          )
+                        )}
+                    </tr>
+                  </tbody>
+                </table>
+              ) : null}
+            </DragOverlay>,
+            portalTarget
+          )
+        : null}
     </DndContext>
   )
 }
 
-export { DataGridTableDndRowHandle, DataGridTableDndRows }
+export { DataGridTableDndRowHandle, DataGridTableDndRows }
+export type { DataGridTableDndRowData, DataGridTableDndRowDecoration }