fix: update KanbanFilters to use regularTasks instead of tasks

- Changed `tasks` to `regularTasks` in `KanbanFilters` for accurate task counting.
- Updated priority and tag count calculations to reflect the new `regularTasks` prop, ensuring filters work with non-pinned tasks.
- Adjusted `TasksContext` to provide `regularTasks`, enhancing task management clarity.

src/contexts/TasksContext.tsx

@@ -10,7 +10,8 @@ import { KanbanFilters } from '@/components/kanban/KanbanFilters';
 import { sortTasks, getSortOption, DEFAULT_SORT, createSortKey } from '@/lib/sort-config';
 
 interface TasksContextType {
-  tasks: Task[];
+  tasks: Task[]; // Toutes les tâches
+  regularTasks: Task[]; // Tâches sans les épinglées (pour Kanban)
   stats: {
     total: number;
     completed: number;
@@ -175,6 +176,7 @@ export function TasksProvider({ children, initialTasks, initialStats, initialTag
 
   const contextValue: TasksContextType = {
     ...tasksState,
+    regularTasks,
     tags,
     tagsLoading,
     tagsError,