feat(backup): add enterprise backup & restore foundation

frontend/athena/app/api/backups/[filename]/restore/route.ts

@@ -0,0 +1,19 @@
+import { NextRequest } from "next/server";
+
+import { proxyHermesRequest } from "@/lib/server/hermes-proxy";
+import { assertSameOrigin } from "@/lib/server/request-guards";
+
+type Params = {
+  params: Promise<{
+    filename: string;
+  }>;
+};
+
+export async function POST(request: NextRequest, context: Params) {
+  const originError = assertSameOrigin(request);
+  if (originError) {
+    return originError;
+  }
+  const { filename } = await context.params;
+  return proxyHermesRequest(request, `/backups/${encodeURIComponent(filename)}/restore`);
+}