chore: add client/src/lib/queryClient.ts

client/src/lib/queryClient.ts

@@ -0,0 +1,24 @@
+import { QueryClient } from "@tanstack/react-query";
+
+export const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      retry: 1,
+      staleTime: 30_000,
+    },
+  },
+});
+
+export async function apiRequest(method: string, path: string, body?: unknown): Promise<Response> {
+  const res = await fetch(path, {
+    method,
+    headers: body ? { "Content-Type": "application/json" } : {},
+    body: body ? JSON.stringify(body) : undefined,
+    credentials: "include",
+  });
+  if (!res.ok) {
+    const text = await res.text().catch(() => res.statusText);
+    throw new Error(text || `HTTP ${res.status}`);
+  }
+  return res;
+}