feat: integrate global keyboard shortcuts across multiple components

- Added `KeyboardShortcutsProvider` to `RootLayout` for centralized keyboard shortcut management.
- Implemented `useGlobalKeyboardShortcuts` in `DailyPageClient`, `KanbanPageClient`, and `HomePageClient` to enhance navigation and task management with keyboard shortcuts.
- Updated `KeyboardShortcuts` component to render a modal for displaying available shortcuts, improving user accessibility.
- Enhanced `Header` component with buttons to open the keyboard shortcuts modal, streamlining user interaction.

src/components/HomePageClient.tsx

@@ -10,6 +10,7 @@ import { RecentTasks } from '@/components/dashboard/RecentTasks';
 import { ProductivityAnalytics } from '@/components/dashboard/ProductivityAnalytics';
 import { ProductivityMetrics } from '@/services/analytics/analytics';
 import { DeadlineMetrics } from '@/services/analytics/deadline-analytics';
+import { useGlobalKeyboardShortcuts } from '@/hooks/useGlobalKeyboardShortcuts';
 
 interface HomePageClientProps {
   initialTasks: Task[];
@@ -31,6 +32,20 @@ function HomePageContent({ productivityMetrics, deadlineMetrics }: {
     await createTask(data);
   };
 
+  // Raccourcis clavier globaux pour la page Dashboard
+  useGlobalKeyboardShortcuts({
+    onOpenSearch: () => {
+      // Focus sur le champ de recherche s'il existe, sinon naviguer vers Kanban
+      const searchInput = document.querySelector('input[placeholder*="Rechercher"]') as HTMLInputElement;
+      if (searchInput) {
+        searchInput.focus();
+      } else {
+        // Naviguer vers Kanban où il y a une recherche
+        window.location.href = '/kanban';
+      }
+    }
+  });
+
   return (
     <div className="min-h-screen bg-[var(--background)]">
       <Header