Fix Stop + broken buttons: use location.reload() which preserves hash but fully unloads page, killing workers and audio. Revert pathname routing (unnecessary).

frontend/src/App.svelte

@@ -8,28 +8,7 @@
   let route = $state("/");
   let gameId = $state(null);
 
-  function parseRoute() {
-    // Check pathname first (full page navigations from Stop button)
-    const path = window.location.pathname.replace(/\/+$/, "") || "/";
-    if (path !== "/") {
-      const parts = path.split("/").filter(Boolean);
-      if (parts.length >= 2) {
-        const [routeName, routeId] = parts;
-        if (routeName === "game" || routeName === "play") {
-          route = "/" + routeName;
-          gameId = routeId;
-          // Sync the hash so hash-based links still work
-          window.history.replaceState(null, "", "#/" + routeName + "/" + routeId);
-          return;
-        }
-      }
-      // Unknown path, reset to home
-      route = "/";
-      gameId = null;
-      return;
-    }
-
-    // Fall back to hash-based routing (SPA transitions)
+  function parseHash() {
     const hash = window.location.hash.slice(1) || "/";
     const parts = hash.split("/").filter(Boolean);
     if (parts.length === 0 || (parts.length === 1 && parts[0] === "")) {
@@ -49,15 +28,10 @@
 
   // Listen for hash changes and page loads
   $effect(() => {
-    parseRoute();
-    const handler = () => parseRoute();
+    parseHash();
+    const handler = () => parseHash();
     window.addEventListener("hashchange", handler);
-    // Also listen for popstate (for browser back/forward)
-    window.addEventListener("popstate", handler);
-    return () => {
-      window.removeEventListener("hashchange", handler);
-      window.removeEventListener("popstate", handler);
-    };
+    return () => window.removeEventListener("hashchange", handler);
   });
 </script>