fix: add active filters count to context and components

- Integrated activeFiltersCount into useTasksContext for HomePageContent and KanbanFilters.
- Removed redundant activeFiltersCount calculation from KanbanFilters, leveraging the context instead for better performance and consistency.

src/contexts/TasksContext.tsx

@@ -27,6 +27,7 @@ interface TasksContextType {
   setKanbanFilters: (filters: KanbanFilters) => void;
   filteredTasks: Task[];
   pinnedTasks: Task[]; // Tâches avec tags épinglés (objectifs)
+  activeFiltersCount: number; // Nombre de filtres actifs
   // Tags
   tags: Tag[];
   tagsLoading: boolean;
@@ -126,6 +127,17 @@ export function TasksProvider({ children, initialTasks, initialStats, initialTag
     return { pinnedTasks: sortedPinned, regularTasks: regular };
   }, [tasksState.tasks, tags, kanbanFilters.sortBy]);
 
+  // Calcul du nombre de filtres actifs
+  const activeFiltersCount = useMemo(() => {
+    return (kanbanFilters.tags?.filter(Boolean).length || 0) + 
+           (kanbanFilters.priorities?.filter(Boolean).length || 0) + 
+           (kanbanFilters.search ? 1 : 0) + 
+           (kanbanFilters.jiraProjects?.filter(Boolean).length || 0) + 
+           (kanbanFilters.jiraTypes?.filter(Boolean).length || 0) + 
+           (kanbanFilters.showJiraOnly ? 1 : 0) + 
+           (kanbanFilters.hideJiraTasks ? 1 : 0);
+  }, [kanbanFilters]);
+
   // Filtrage et tri des tâches régulières (pas les épinglées)
   const filteredTasks = useMemo(() => {
     let filtered = regularTasks;
@@ -203,7 +215,8 @@ export function TasksProvider({ children, initialTasks, initialStats, initialTag
     kanbanFilters,
     setKanbanFilters,
     filteredTasks,
-    pinnedTasks
+    pinnedTasks,
+    activeFiltersCount
   };
 
   return (