feat: Add FF Nancy API client and status endpoint, implement grid product fetching and draft change saving, and introduce AI Copilot core logic.

src/app/api/ff-status/route.ts

@@ -0,0 +1,10 @@
+import { NextResponse } from "next/server";
+import { getSyncStatus } from "@/lib/api-ff-client";
+
+export async function GET() {
+    const status = await getSyncStatus();
+    if (!status) {
+        return NextResponse.json({ error: "API FF Nancy non disponible" }, { status: 503 });
+    }
+    return NextResponse.json(status);
+}