feat: reintroduce ColumnVisibilityToggle in KanbanFilters

- Moved `ColumnVisibilityToggle` from `Board` and `SwimlanesBase` to `KanbanFilters` for better accessibility.
- Updated `KanbanFilters` to manage column visibility, enhancing user control over displayed statuses.
- Cleaned up unused imports and adjusted layout for improved UI consistency.

components/kanban/TaskCard.tsx

@@ -7,7 +7,7 @@ import { Badge } from '@/components/ui/Badge';
 import { TagDisplay } from '@/components/ui/TagDisplay';
 import { useTasksContext } from '@/contexts/TasksContext';
 import { useDraggable } from '@dnd-kit/core';
-import { getPriorityConfig } from '@/lib/status-config';
+import { getPriorityConfig, getPriorityColorHex } from '@/lib/status-config';
 
 interface TaskCardProps {
   task: Task;
@@ -167,7 +167,10 @@ export function TaskCard({ task, onDelete, onEdit, onUpdateTitle, compactView =
             )}
             
             {/* Indicateur de priorité compact */}
-            <div className={`w-1.5 h-1.5 rounded-full bg-${getPriorityConfig(task.priority).color}-400`} />
+            <div 
+              className="w-1.5 h-1.5 rounded-full" 
+              style={{ backgroundColor: getPriorityColorHex(getPriorityConfig(task.priority).color) }}
+            />
           </div>
         </div>
       </Card>
@@ -248,7 +251,13 @@ export function TaskCard({ task, onDelete, onEdit, onUpdateTitle, compactView =
           )}
           
           {/* Indicateur de priorité tech */}
-          <div className={`w-2 h-2 rounded-full animate-pulse bg-${getPriorityConfig(task.priority).color}-400 shadow-${getPriorityConfig(task.priority).color}-400/50 shadow-sm`} />
+          <div 
+            className="w-2 h-2 rounded-full animate-pulse shadow-sm"
+            style={{ 
+              backgroundColor: getPriorityColorHex(getPriorityConfig(task.priority).color),
+              boxShadow: `0 0 4px ${getPriorityColorHex(getPriorityConfig(task.priority).color)}50`
+            }}
+          />
         </div>
       </div>