feat(task-list): add TaskListSkeleton component for improved loading state

- Introduced TaskListSkeleton to provide a visual loading state for the task list, enhancing user experience during data fetching.
- Updated TaskListV2Table to utilize TaskListSkeleton instead of a generic Skeleton component, allowing for a more tailored loading interface.
- The new skeleton component includes customizable column widths and multiple rows to better represent the task list structure while loading.

worklenz-frontend/src/components/task-list-v2/TaskListV2Table.tsx

@@ -63,6 +63,7 @@ import OptimizedBulkActionBar from '@/components/task-management/optimized-bulk-
 import CustomColumnModal from '@/pages/projects/projectView/taskList/task-list-table/custom-columns/custom-column-modal/custom-column-modal';
 import AddTaskRow from './components/AddTaskRow';
 import { AddCustomColumnButton, CustomColumnHeader } from './components/CustomColumnComponents';
+import TaskListSkeleton from './components/TaskListSkeleton';
 
 // Hooks and utilities
 import { useTaskSocketHandlers } from '@/hooks/useTaskSocketHandlers';
@@ -597,7 +598,9 @@ const TaskListV2Section: React.FC = () => {
   );
 
   // Loading and error states
-  if (loading || loadingColumns) return <Skeleton style={{ marginTop: 8 }} active />;
+  if (loading || loadingColumns) {
+    return <TaskListSkeleton visibleColumns={visibleColumns} />;
+  }
   if (error)
     return (
       <div>

worklenz-frontend/src/components/task-list-v2/components/TaskListSkeleton.tsx

@@ -0,0 +1,178 @@
+import React from 'react';
+import { Skeleton } from 'antd';
+import ImprovedTaskFilters from '@/components/task-management/improved-task-filters';
+
+interface TaskListSkeletonProps {
+  visibleColumns?: Array<{
+    id: string;
+    width: string;
+    isSticky?: boolean;
+  }>;
+}
+
+const TaskListSkeleton: React.FC<TaskListSkeletonProps> = ({ visibleColumns }) => {
+  // Default columns if none provided
+  const defaultColumns = [
+    { id: 'dragHandle', width: '40px' },
+    { id: 'checkbox', width: '40px' },
+    { id: 'taskKey', width: '100px' },
+    { id: 'title', width: '300px' },
+    { id: 'assignees', width: '120px' },
+    { id: 'status', width: '120px' },
+    { id: 'priority', width: '100px' },
+    { id: 'dueDate', width: '120px' },
+  ];
+
+  const columns = visibleColumns || defaultColumns;
+
+  // Generate multiple skeleton rows
+  const skeletonRows = Array.from({ length: 8 }, (_, index) => (
+    <div key={index} className="flex items-center min-w-max px-1 py-3 border-b border-gray-100 dark:border-gray-800">
+      {columns.map((column, colIndex) => {
+        const columnStyle = {
+          width: column.width,
+          flexShrink: 0,
+        };
+
+        return (
+          <div
+            key={`${index}-${column.id}`}
+            className="border-r border-gray-200 dark:border-gray-700 flex items-center px-2"
+            style={columnStyle}
+          >
+            {column.id === 'dragHandle' || column.id === 'checkbox' ? (
+              <Skeleton.Button size="small" shape="circle" active />
+            ) : column.id === 'title' ? (
+              <div className="w-full">
+                <Skeleton.Input size="small" active style={{ width: '80%' }} />
+              </div>
+            ) : column.id === 'assignees' ? (
+              <div className="flex items-center gap-1">
+                <Skeleton.Avatar size="small" active />
+                <Skeleton.Avatar size="small" active />
+              </div>
+            ) : (
+              <Skeleton.Button size="small" active style={{ width: '70%' }} />
+            )}
+          </div>
+        );
+      })}
+    </div>
+  ));
+
+  return (
+    <div>      
+      <div className="flex flex-col bg-white dark:bg-gray-900 h-full overflow-hidden">
+        {/* Table Container */}
+        <div
+          className="border border-gray-200 dark:border-gray-700 rounded-lg"
+          style={{
+            height: 'calc(100vh - 240px)',
+            display: 'flex',
+            flexDirection: 'column',
+            overflow: 'hidden',
+          }}
+        >
+        {/* Skeleton Content */}
+        <div
+          className="flex-1 bg-white dark:bg-gray-900 relative"
+          style={{
+            overflowX: 'auto',
+            overflowY: 'auto',
+            minHeight: 0,
+          }}
+        >
+          {/* Skeleton Column Headers */}
+          <div
+            className="sticky top-0 z-30 bg-gray-50 dark:bg-gray-800 border-b border-gray-200 dark:border-gray-700"
+            style={{ width: '100%', minWidth: 'max-content' }}
+          >
+            <div
+              className="flex items-center px-1 py-3 w-full"
+              style={{ minWidth: 'max-content', height: '44px' }}
+            >
+              {columns.map((column, index) => {
+                const columnStyle = {
+                  width: column.width,
+                  flexShrink: 0,
+                };
+
+                return (
+                  <div
+                    key={`header-${column.id}`}
+                    className="border-r border-gray-200 dark:border-gray-700 flex items-center px-2"
+                    style={columnStyle}
+                  >
+                    {column.id === 'dragHandle' || column.id === 'checkbox' ? (
+                      <span></span>
+                    ) : (
+                      <Skeleton.Button size="small" active style={{ width: '60%' }} />
+                    )}
+                  </div>
+                );
+              })}
+              {/* Add Custom Column Button Skeleton */}
+              <div
+                className="flex items-center justify-center px-2 border-r border-gray-200 dark:border-gray-700"
+                style={{ width: '50px', flexShrink: 0 }}
+              >
+                <Skeleton.Button size="small" shape="circle" active />
+              </div>
+            </div>
+          </div>
+
+          {/* Skeleton Group Headers and Rows */}
+          <div style={{ minWidth: 'max-content' }}>
+            {/* First Group */}
+            <div className="mt-2">
+              {/* Group Header Skeleton */}
+              <div className="flex items-center px-4 py-2 bg-gray-50 dark:bg-gray-800 border-b border-gray-200 dark:border-gray-700">
+                <Skeleton.Button size="small" shape="circle" active />
+                <div className="ml-3 flex-1">
+                  <Skeleton.Input size="small" active style={{ width: '150px' }} />
+                </div>
+                <Skeleton.Button size="small" active style={{ width: '30px' }} />
+              </div>
+              
+              {/* Group Tasks Skeleton */}
+              {skeletonRows.slice(0, 3)}
+            </div>
+
+            {/* Second Group */}
+            <div className="mt-2">
+              {/* Group Header Skeleton */}
+              <div className="flex items-center px-4 py-2 bg-gray-50 dark:bg-gray-800 border-b border-gray-200 dark:border-gray-700">
+                <Skeleton.Button size="small" shape="circle" active />
+                <div className="ml-3 flex-1">
+                  <Skeleton.Input size="small" active style={{ width: '150px' }} />
+                </div>
+                <Skeleton.Button size="small" active style={{ width: '30px' }} />
+              </div>
+              
+              {/* Group Tasks Skeleton */}
+              {skeletonRows.slice(3, 6)}
+            </div>
+
+            {/* Third Group */}
+            <div className="mt-2">
+              {/* Group Header Skeleton */}
+              <div className="flex items-center px-4 py-2 bg-gray-50 dark:bg-gray-800 border-b border-gray-200 dark:border-gray-700">
+                <Skeleton.Button size="small" shape="circle" active />
+                <div className="ml-3 flex-1">
+                  <Skeleton.Input size="small" active style={{ width: '150px' }} />
+                </div>
+                <Skeleton.Button size="small" active style={{ width: '30px' }} />
+              </div>
+              
+              {/* Group Tasks Skeleton */}
+              {skeletonRows.slice(6, 8)}
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+    </div>
+  );
+};
+
+export default TaskListSkeleton;