init here

frontend/router.js

@@ -0,0 +1,23 @@
+const routes = {};
+export function route(path, handler) {
+  routes[path] = handler;
+}
+
+function parseHash() {
+  const h = location.hash.replace(/^#/, "");
+  const parts = h.split("?");
+  const path = parts[0] || "/dashboard";
+  const search = new URLSearchParams(parts[1] || "");
+  return { path, search };
+}
+
+export async function routerNavigate() {
+  const { path, search } = parseHash();
+  const view = document.getElementById("view");
+  const handler = routes[path] || routes["/404"];
+  view.innerHTML = "";
+  await handler({ view, search });
+  window.scrollTo(0, 0);
+}
+
+window.addEventListener("hashchange", routerNavigate);