feat: add 'Manager' link to Header component

- Introduced a new navigation link for the 'Manager' page in the Header component, improving user access to management features.

src/app/weekly-manager/page.tsx

@@ -0,0 +1,36 @@
+import { Header } from '@/components/ui/Header';
+import { ManagerSummaryService } from '@/services/manager-summary';
+import { tasksService } from '@/services/tasks';
+import { tagsService } from '@/services/tags';
+import { userPreferencesService } from '@/services/user-preferences';
+import { WeeklyManagerPageClient } from './WeeklyManagerPageClient';
+
+// Force dynamic rendering (no static generation)
+export const dynamic = 'force-dynamic';
+
+export default async function WeeklyManagerPage() {
+  // SSR - Récupération des données côté serveur
+  const [summary, initialTasks, initialTags, initialPreferences] = await Promise.all([
+    ManagerSummaryService.getManagerSummary(),
+    tasksService.getTasks(),
+    tagsService.getTags(),
+    userPreferencesService.getAllPreferences()
+  ]);
+
+  return (
+    <div className="min-h-screen bg-[var(--background)]">
+      <Header />
+      
+      <div className="container mx-auto px-4 py-8">
+        <div className="max-w-6xl mx-auto">
+          <WeeklyManagerPageClient 
+            initialSummary={summary}
+            initialTasks={initialTasks}
+            initialTags={initialTags}
+            initialPreferences={initialPreferences}
+          />
+        </div>
+      </div>
+    </div>
+  );
+}