Fix Stop button killing audio: use full page reload to terminate Web Workers and AudioContexts that js-dos spawns internally

frontend/src/pages/Play.svelte

@@ -64,21 +64,10 @@
     booting = false;
   }
 
-  async function stopEmulator() {
-    // Save reference then null it so the unmount cleanup doesn't double-try
-    const ci = dosCI;
-    dosCI = null;
-
-    // Properly stop the emulator
-    if (ci) {
-      try { await ci.exit(); } catch (_) {}
-    }
-    if (dosContainer) {
-      dosContainer.innerHTML = "";
-    }
-
-    running = false;
-    push(`/game/${game.id}`);
+  function stopEmulator() {
+    // Full page reload to guarantee all workers, AudioContexts,
+    // and WebAssembly threads are fully terminated
+    window.location.href = `/#/game/${game.id}`;
   }
 
   $effect(() => { load(); });