refactor(enhanced-kanban): improve code readability and integrate TaskListFilters component

- Refactored EnhancedKanbanBoard and EnhancedKanbanGroup components for better code organization and readability.
- Integrated TaskListFilters component to enhance task filtering capabilities within the kanban board.
- Cleaned up unnecessary whitespace and improved formatting for consistency across the codebase.

worklenz-frontend/src/components/enhanced-kanban/EnhancedKanbanBoard.tsx

@@ -33,6 +33,8 @@ import EnhancedKanbanTaskCard from './EnhancedKanbanTaskCard';
 import PerformanceMonitor from './PerformanceMonitor';
 import './EnhancedKanbanBoard.css';
 
+// Import the TaskListFilters component
+const TaskListFilters = React.lazy(() => import('@/pages/projects/projectView/taskList/task-list-filters/task-list-filters'));
 interface EnhancedKanbanBoardProps {
   projectId: string;
   className?: string;
@@ -258,7 +260,16 @@ const EnhancedKanbanBoard: React.FC<EnhancedKanbanBoardProps> = ({ projectId, cl
   return (
     <div className={`enhanced-kanban-board ${className}`}>
       {/* Performance Monitor - only show for large datasets */}
-      {performanceMetrics.totalTasks > 100 && <PerformanceMonitor />}
+      {/* {performanceMetrics.totalTasks > 100 && <PerformanceMonitor />} */}
+      <Card
+        size="small"
+        className="mb-4"
+        styles={{ body: { padding: '12px 16px' } }}
+      >
+        <React.Suspense fallback={<div>Loading filters...</div>}>
+          <TaskListFilters position="board" />
+        </React.Suspense>
+      </Card>
 
       {loadingGroups ? (
         <Card>
@@ -285,7 +296,7 @@ const EnhancedKanbanBoard: React.FC<EnhancedKanbanBoardProps> = ({ projectId, cl
                   key={group.id}
                   group={group}
                   activeTaskId={dragState.activeTaskId}
-                  overId={overId}
+                  overId={overId as string | null}
                 />
               ))}
             </div>

worklenz-frontend/src/components/enhanced-kanban/EnhancedKanbanGroup.tsx

@@ -121,12 +121,12 @@ const EnhancedKanbanGroup: React.FC<EnhancedKanbanGroupProps> = React.memo(({
 
                 {/* Show drop indicator after last task if dropping at the end */}
                 {shouldShowDropIndicators &&
-                 index === group.tasks.length - 1 && 
+                  index === group.tasks.length - 1 &&
-                 overId === group.id && (
+                  overId === group.id && (
-                  <div className="drop-preview-indicator">
+                    <div className="drop-preview-indicator">
-                    <div className="drop-line"></div>
+                      <div className="drop-line"></div>
-                  </div>
+                    </div>
-                )}
+                  )}
               </React.Fragment>
             ))}
           </SortableContext>