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;

src/main/java/com/dostalgia/UploadResource.java

@@ -512,19 +512,6 @@ public class UploadResource {
     );
 
     private void createBundle(Path extractDir, String exePath, List<String> cdImages, Path bundlePath) throws IOException {
-        // Write .jsdos config directly into the extract directory
-        Path jsdos = extractDir.resolve(".jsdos");
-        Files.createDirectories(jsdos);
-        if (exePath != null) {
-            String relExe = extractDir.relativize(Path.of(exePath)).toString();
-            Files.writeString(jsdos.resolve("dosbox.conf"), buildDosboxConf(relExe, cdImages));
-            Files.write(jsdos.resolve("jsdos.json"), buildJsdosJson(relExe));
-        } else {
-            // CD-only game — no executable, mount CD and show a DOS prompt
-            Files.writeString(jsdos.resolve("dosbox.conf"), buildCdOnlyDosboxConf(cdImages));
-            Files.write(jsdos.resolve("jsdos.json"), buildCdOnlyJsdosJson());
-        }
-
         // ZIP it up directly from extractDir (no temp copy)
         try (var zos = new java.util.zip.ZipOutputStream(Files.newOutputStream(bundlePath))) {
 
@@ -550,26 +537,9 @@ public class UploadResource {
                 zos.closeEntry();
             }
 
-            // ── Phase 3: .jsdos config files (must come before game files) ──
-            try (var walk = Files.walk(jsdos)) {
-                walk.filter(Files::isRegularFile)
-                    .sorted()
-                    .forEach(f -> {
-                        try {
-                            String entryName = extractDir.relativize(f).toString().replace('\\', '/');
-                            zos.putNextEntry(new java.util.zip.ZipEntry(entryName));
-                            Files.copy(f, zos);
-                            zos.closeEntry();
-                        } catch (IOException e) {
-                            throw new UncheckedIOException(e);
-                        }
-                    });
-            }
-
-            // ── Phase 4: All other game files ──
+            // ── Phase 3: All game files ──
             try (var walk = Files.walk(extractDir)) {
                 walk.filter(Files::isRegularFile)
-                    .filter(f -> !f.startsWith(jsdos))
                     .filter(f -> {
                         String n = f.getFileName().toString().toLowerCase();
                         int dot = n.lastIndexOf('.');
@@ -588,11 +558,6 @@ public class UploadResource {
                     });
             }
         }
-
-        // Clean up .jsdos config files from the extract dir
-        Files.walk(jsdos).sorted(Comparator.reverseOrder()).forEach(p -> {
-            try { Files.deleteIfExists(p); } catch (IOException ignored) {}
-        });
     }
 
     // ─── Configuration Helpers ──────────────────────────────────