feat: add filter for completed tasks in the last 7 days

- Implemented `showCompletedLast7Days` filter in `KanbanFilters` to toggle visibility of tasks completed in the last week.
- Updated `GeneralFilters` to include a new filter chip for the completed tasks toggle.
- Enhanced `TasksProvider` to filter tasks based on the new criteria, improving task management capabilities.
- Adjusted `FilterSummary` to display the active filter status for better user feedback.

src/contexts/TasksContext.tsx

@@ -61,6 +61,7 @@ export function TasksProvider({ children, initialTasks, initialTags, initialStat
     swimlanesByTags: preferences.viewPreferences.swimlanesByTags || false,
     swimlanesMode: preferences.viewPreferences.swimlanesMode || 'tags',
     showWithDueDate: preferences.kanbanFilters.showWithDueDate || false,
+    showCompletedLast7Days: preferences.kanbanFilters.showCompletedLast7Days || false,
     // Filtres Jira
     showJiraOnly: preferences.kanbanFilters.showJiraOnly || false,
     hideJiraTasks: preferences.kanbanFilters.hideJiraTasks || false,
@@ -82,6 +83,7 @@ export function TasksProvider({ children, initialTasks, initialTags, initialStat
       showCompleted: newFilters.showCompleted,
       sortBy: newFilters.sortBy,
       showWithDueDate: newFilters.showWithDueDate,
+      showCompletedLast7Days: newFilters.showCompletedLast7Days,
       // Filtres Jira
       showJiraOnly: newFilters.showJiraOnly,
       hideJiraTasks: newFilters.hideJiraTasks,
@@ -106,6 +108,7 @@ export function TasksProvider({ children, initialTasks, initialTags, initialStat
     ]);
   };
 
+
   // Séparer les tâches épinglées (objectifs) des autres et les trier
   const { pinnedTasks, regularTasks } = useMemo(() => {
     const pinnedTagNames = tags.filter(tag => tag.isPinned).map(tag => tag.name);
@@ -141,6 +144,7 @@ export function TasksProvider({ children, initialTasks, initialTags, initialStat
            (kanbanFilters.priorities?.filter(Boolean).length || 0) + 
            (kanbanFilters.search ? 1 : 0) + 
            (kanbanFilters.showWithDueDate ? 1 : 0) +
+           (kanbanFilters.showCompletedLast7Days ? 1 : 0) +
            (kanbanFilters.jiraProjects?.filter(Boolean).length || 0) + 
            (kanbanFilters.jiraTypes?.filter(Boolean).length || 0) + 
            (kanbanFilters.showJiraOnly ? 1 : 0) + 
@@ -220,6 +224,18 @@ export function TasksProvider({ children, initialTasks, initialTags, initialStat
       filtered = filtered.filter(task => task.dueDate != null);
     }
 
+    // Filtre par tâches complétées les 7 derniers jours
+    if (kanbanFilters.showCompletedLast7Days) {
+      const sevenDaysAgo = new Date();
+      sevenDaysAgo.setDate(sevenDaysAgo.getDate() - 7);
+      
+      filtered = filtered.filter(task => 
+        task.status === 'done' && 
+        task.completedAt && 
+        task.completedAt >= sevenDaysAgo
+      );
+    }
+
     // Tri des tâches
     if (kanbanFilters.sortBy) {
       const sortOption = getSortOption(kanbanFilters.sortBy);