feat: update TeamDetailPage and modularize components

- Changed params in TeamDetailPage to be a Promise, ensuring proper async handling.
- Updated data fetching logic to use awaited teamId for better clarity.
- Modularized TeamDetailClientWrapper by extracting TeamDetailHeader, TeamMetricsCards, TeamDetailTabs, and TeamMemberModal for improved organization and readability.
- Removed unused imports and streamlined the component structure, enhancing maintainability.

components/admin/team-detail-header.tsx

@@ -0,0 +1,55 @@
+"use client";
+
+import { useRouter } from "next/navigation";
+import { Button } from "@/components/ui/button";
+import { ArrowLeft, Download, Users } from "lucide-react";
+
+interface TeamDetailHeaderProps {
+  teamName: string;
+  direction: string;
+  onExport: () => void;
+}
+
+export function TeamDetailHeader({
+  teamName,
+  direction,
+  onExport,
+}: TeamDetailHeaderProps) {
+  const router = useRouter();
+
+  return (
+    <div className="flex items-center justify-between mb-8">
+      <div className="flex items-center gap-4">
+        <Button
+          variant="ghost"
+          size="sm"
+          onClick={() => router.push("/admin")}
+          className="text-slate-400 hover:text-white hover:bg-white/10"
+        >
+          <ArrowLeft className="h-4 w-4 mr-2" />
+          Retour à l'admin
+        </Button>
+        <div className="text-slate-400 text-sm">|</div>
+        <div className="flex items-center gap-3">
+          <div className="p-2 bg-blue-500/20 border border-blue-500/30 rounded-xl">
+            <Users className="h-5 w-5 text-blue-400" />
+          </div>
+          <div>
+            <h1 className="text-2xl font-bold text-white">{teamName}</h1>
+            <p className="text-slate-400">{direction}</p>
+          </div>
+        </div>
+      </div>
+      <div className="flex items-center gap-3">
+        <Button
+          variant="outline"
+          onClick={onExport}
+          className="bg-white/5 border-white/20 text-white hover:bg-white/10"
+        >
+          <Download className="h-4 w-4 mr-2" />
+          Rapport détaillé
+        </Button>
+      </div>
+    </div>
+  );
+}