feat(KanbanFilters): add filter for hiding completed tasks older than 7 days

- Enhanced KanbanFilters component to include a new filter option for hiding tasks completed more than 15 days ago.
- Updated GeneralFilters component to display the new filter and its count.
- Modified TasksContext to calculate and provide the count of old completed tasks.
- Adjusted KanbanFiltersProps and related types to accommodate the new filter functionality.

src/contexts/TasksContext.tsx

@@ -34,6 +34,7 @@ interface TasksContextType {
   filteredTasks: Task[];
   pinnedTasks: Task[]; // Tâches avec tags épinglés (objectifs)
   activeFiltersCount: number; // Nombre de filtres actifs
+  oldCompletedTasksCount: number; // Nombre de tâches terminées depuis +15j
   // Tags
   tags: Tag[];
   tagsLoading: boolean;
@@ -64,6 +65,11 @@ export function TasksProvider({
   const { preferences, updateKanbanFilters, updateViewPreferences } =
     useUserPreferences();
 
+  // Fonction utilitaire pour identifier les statuts terminés
+  const isCompletedStatus = (status: TaskStatus): boolean => {
+    return ['done', 'cancelled', 'archived'].includes(status);
+  };
+
   // Construire l'objet KanbanFilters à partir des préférences
   const kanbanFilters: KanbanFilters = useMemo(
     () => ({
@@ -79,6 +85,8 @@ export function TasksProvider({
       showWithDueDate: preferences.kanbanFilters.showWithDueDate || false,
       showCompletedLast7Days:
         preferences.kanbanFilters.showCompletedLast7Days || false,
+      hideCompletedOlderThan15Days:
+        preferences.kanbanFilters.hideCompletedOlderThan15Days || false,
       // Filtres Jira
       showJiraOnly: preferences.kanbanFilters.showJiraOnly || false,
       hideJiraTasks: preferences.kanbanFilters.hideJiraTasks || false,
@@ -106,6 +114,7 @@ export function TasksProvider({
       sortBy: newFilters.sortBy,
       showWithDueDate: newFilters.showWithDueDate,
       showCompletedLast7Days: newFilters.showCompletedLast7Days,
+      hideCompletedOlderThan15Days: newFilters.hideCompletedOlderThan15Days,
       // Filtres Jira
       showJiraOnly: newFilters.showJiraOnly,
       hideJiraTasks: newFilters.hideJiraTasks,
@@ -277,12 +286,25 @@ export function TasksProvider({
 
       filtered = filtered.filter(
         (task) =>
-          task.status === 'done' &&
+          isCompletedStatus(task.status) &&
           task.completedAt &&
           task.completedAt >= sevenDaysAgo
       );
     }
 
+    // Filtre pour masquer les tâches terminées depuis plus de 7 jours
+    if (kanbanFilters.hideCompletedOlderThan15Days) {
+      const sevenDaysAgo = new Date();
+      sevenDaysAgo.setDate(sevenDaysAgo.getDate() - 7);
+
+      filtered = filtered.filter(
+        (task) =>
+          !isCompletedStatus(task.status) ||
+          !task.completedAt ||
+          task.completedAt >= sevenDaysAgo
+      );
+    }
+
     // Tri des tâches
     if (kanbanFilters.sortBy) {
       const sortOption = getSortOption(kanbanFilters.sortBy);
@@ -302,6 +324,33 @@ export function TasksProvider({
     return filtered;
   }, [regularTasks, kanbanFilters]);
 
+  // Calculer le nombre de tickets terminés depuis plus de 7 jours
+  const oldCompletedTasksCount = useMemo(() => {
+    if (!regularTasks || regularTasks.length === 0) return 0;
+
+    const sevenDaysAgo = new Date();
+    sevenDaysAgo.setDate(sevenDaysAgo.getDate() - 7);
+
+    const oldTasks = regularTasks.filter(
+      (task) =>
+        isCompletedStatus(task.status) &&
+        task.completedAt &&
+        task.completedAt < sevenDaysAgo
+    );
+
+    console.log('Debug old completed tasks:', {
+      sevenDaysAgo: sevenDaysAgo.toISOString(),
+      oldTasks: oldTasks.map((t) => ({
+        title: t.title,
+        status: t.status,
+        completedAt: t.completedAt,
+        isOld: t.completedAt ? t.completedAt < sevenDaysAgo : false,
+      })),
+    });
+
+    return oldTasks.length;
+  }, [regularTasks]);
+
   const contextValue: TasksContextType = {
     ...tasksState,
     regularTasks,
@@ -313,6 +362,7 @@ export function TasksProvider({
     filteredTasks,
     pinnedTasks,
     activeFiltersCount,
+    oldCompletedTasksCount,
   };
 
   return (