Añadimos Router con .to.path.params.back

sw.js

@@ -1,4 +1,3 @@
-
 const isFunction = (value) => typeof value === 'function';
 const isNode = (value) => value instanceof Node;
 
@@ -281,25 +280,29 @@ export const Transition = ({ enter, idle, leave }, { children: [child] }) => {
 
 // --- Routing & Application Entry ---
 export const Router = (routes) => {
-    const currentPath = signal(window.location.hash.slice(1) || '/');
-    window.onhashchange = () => currentPath.value = window.location.hash.slice(1) || '/';
+    const path = signal(window.location.hash.slice(1) || '/'), params = signal({});
+    Router.path = path;
+    Router.params = params;
+    Router.to = (p) => window.location.hash = p;
+    Router.back = () => window.history.back();
+    window.onhashchange = () => path.value = window.location.hash.slice(1) || '/';
     return h('div', { class: 'router-view' }, () => {
-        const pathValue = currentPath.value;
-        for (const route of routes) {
-            const pattern = new RegExp(`^${route.path.replace(/:[^\s/]+/g, '([^/]+)')}$`);
-            const match = pathValue.match(pattern);
+        const cur = path.value;
+        for (const r of routes) {
+            const match = cur.match(new RegExp(`^${r.path.replace(/:[^\s/]+/g, '([^/]+)')}$`));
             if (match) {
-                const params = {};
-                const keys = route.path.match(/:[^\s/]+/g) || [];
-                keys.forEach((key, index) => params[key.slice(1)] = match[index + 1]);
-                return h(route.component, { params, path: pathValue });
+                const p = {};
+                (r.path.match(/:[^\s/]+/g) || []).forEach((k, i) => p[k.slice(1)] = match[i + 1]);
+                untrack(() => params.value = p);
+                return h(r.component, { params: p, path: cur });
             }
         }
         const fallback = routes.find(r => r.path === '*');
-        return fallback ? h(fallback.component) : '404';
+        return fallback ? h(fbk.component) : '404';
     });
 };
 
+
 export const mount = (rootComponent, target, props = {}) => {
     const destination = typeof target === 'string' ? document.querySelector(target) : target;
     if (!destination) return;