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/components/ui/FilterSummary.tsx

@@ -9,6 +9,7 @@ interface FilterSummaryProps {
     priorities?: string[];
     tags?: string[];
     showWithDueDate?: boolean;
+    showCompletedLast7Days?: boolean;
     showJiraOnly?: boolean;
     hideJiraTasks?: boolean;
     jiraProjects?: string[];
@@ -72,6 +73,15 @@ export function FilterSummary({
     });
   }
 
+  // Affichage complété les 7 derniers jours
+  if (filters.showCompletedLast7Days) {
+    filterItems.push({
+      label: 'Affichage',
+      value: 'Complété les 7 derniers jours',
+      variant: 'success'
+    });
+  }
+
   // Jira
   if (filters.showJiraOnly) {
     filterItems.push({

src/components/ui/TaskCard.tsx

@@ -517,10 +517,11 @@ const TaskCard = forwardRef<HTMLDivElement, TaskCardProps>(
                     </Badge>
                   )}
 
-                  {/* Statut terminé */}
+                  {/* Statut terminé avec date de résolution */}
                   {completedAt && (
-                    <span className="text-emerald-400 font-mono font-bold">
-                      ✓ DONE
+                    <span className="text-emerald-400 font-mono font-bold flex items-center gap-1">
+                      <span>✓</span>
+                      <span>{formatDateForDisplay(completedAt, 'DISPLAY_SHORT')}</span>
                     </span>
                   )}