feat: enhance mobile and desktop layouts in Daily and Kanban pages

- Refactored `DailyPageClient` to prioritize mobile layout with today's section first and calendar at the bottom for better usability.
- Updated `KanbanPageClient` to include responsive controls for mobile, improving task management experience.
- Adjusted `DailyCheckboxItem` and `DailySection` for better touch targets and responsive design.
- Cleaned up `TODO.md` to reflect changes in mobile interface considerations and task management features.

src/hooks/useIsMobile.ts

@@ -0,0 +1,29 @@
+'use client';
+
+import { useState, useEffect } from 'react';
+
+/**
+ * Hook pour détecter si l'utilisateur est sur mobile
+ * Utilise un breakpoint à 640px (sm en Tailwind)
+ */
+export function useIsMobile(breakpoint: number = 640): boolean {
+  const [isMobile, setIsMobile] = useState(false);
+
+  useEffect(() => {
+    const checkIsMobile = () => {
+      setIsMobile(window.innerWidth < breakpoint);
+    };
+
+    // Check initial
+    checkIsMobile();
+
+    // Écouter les changements de taille
+    window.addEventListener('resize', checkIsMobile);
+
+    return () => {
+      window.removeEventListener('resize', checkIsMobile);
+    };
+  }, [breakpoint]);
+
+  return isMobile;
+}