feat: add weekly summary link to Header component

- Introduced a new navigation link for the weekly summary in the Header component, enhancing user access to summary insights.

components/ui/Header.tsx

@@ -1,3 +1,5 @@
+'use client';
+
 import { useTheme } from '@/contexts/ThemeContext';
 import { useJiraConfig } from '@/contexts/JiraConfigContext';
 import { usePathname } from 'next/navigation';
@@ -51,6 +53,7 @@ export function Header({ title = "TowerControl", subtitle = "Task Management", s
     { href: '/', label: 'Dashboard' },
     { href: '/kanban', label: 'Kanban' },
     { href: '/daily', label: 'Daily' },
+    { href: '/weekly-summary', label: 'Résumé' },
     { href: '/tags', label: 'Tags' },
     ...(isJiraConfigured ? [{ href: '/jira-dashboard', label: `Jira${jiraConfig?.projectKey ? ` (${jiraConfig.projectKey})` : ''}` }] : []),
     { href: '/settings', label: 'Settings' }