fix: remove .jsdos/ from bundles to avoid js-dos bundleUpdateConfig

js-dos v8.3.8 (loaded from CDN) calls bundleUpdateConfig to re-add
.jsdos/jsdos.json into the downloaded bundle. This fails on our
bundles because the WASM libzip _zipfile_add returns non-zero.

Since we can't fix js-dos's internal WASM code, we remove the .jsdos/
directory from bundles entirely. This means bundleConfig() returns null,
no editor config is set, and bundleUpdateConfig is never called.

Downside: games start with js-dos's default dosbox.conf (no custom
CD mounts or autoexec). The game files are on C:\ and the user can
type the executable name. Added autoStart + countDownStart=0 to
auto-skip the config UI.

The config API endpoint (/api/games/{id}/config) is kept for future
use where we can inject config after the emulator starts.

frontend/src/pages/Play.svelte

@@ -1,5 +1,5 @@
 <script>
-  import { getGame, getGameConfig, bundleUrl, setupBundleUrl } from "../lib/api.js";
+  import { getGame, bundleUrl, setupBundleUrl } from "../lib/api.js";
   import { push } from "../lib/router.js";
 
   let { id } = $props();
@@ -68,27 +68,9 @@
 
     // Start the DOS emulator
     try {
-      if (isSetup) {
-        // Setup mode: use the streaming setup-bundle endpoint
-        const url = setupBundleUrl(game);
-        if (!url || !window.Dos) throw new Error("Failed to resolve game bundle");
-        dosCI = await window.Dos(dosContainer, { url });
-      } else {
-        // Normal mode: fetch config + bundle separately, use dosboxConf + initFs
-        // This bypasses js-dos's bundleUpdateConfig which fails on our bundles
-        const [config, bundleResp] = await Promise.all([
-          getGameConfig(game.id),
-          fetch(bundleUrl(game)),
-        ]);
-        if (!bundleResp.ok) throw new Error("Failed to download game bundle");
-        const bundle = new Uint8Array(await bundleResp.arrayBuffer());
-        const jsdosConf = config.jsdos_conf ? JSON.parse(config.jsdos_conf) : undefined;
-        dosCI = await window.Dos(dosContainer, {
-          dosboxConf: config.dosbox_conf,
-          jsdosConf,
-          initFs: bundle,
-        });
-      }
+      const url = isSetup ? setupBundleUrl(game) : bundleUrl(game);
+      if (!url || !window.Dos) throw new Error("Failed to resolve game bundle");
+      dosCI = await window.Dos(dosContainer, { url, autoStart: true, countDownStart: 0 });
       running = true;
     } catch (e) {
       error = e.message;