diff --git a/src/router.tsx b/src/router.tsx
new file mode 100644
index 0000000..bffbc8c
--- /dev/null
+++ b/src/router.tsx
@@ -0,0 +1,23 @@
+import { QueryClient } from "@tanstack/react-query";
+import { createRouter } from "@tanstack/react-router";
+import { routeTree } from "./routeTree.gen";
+
+export const getRouter = () => {
+  const queryClient = new QueryClient({
+    defaultOptions: {
+      // Don't refetch when the window regains focus — opening a native date
+      // picker blurs/refocuses the window, which would refetch mid-edit and
+      // wipe in-progress form input.
+      queries: { refetchOnWindowFocus: false },
+    },
+  });
+
+  const router = createRouter({
+    routeTree,
+    context: { queryClient },
+    scrollRestoration: true,
+    defaultPreloadStaleTime: 0,
+  });
+
+  return router;
+};