fix: guard /data access behind USE_PERSISTENT_STORAGE env var to prevent startup hang on slow mounts

src/toolManager.js

@@ -2,25 +2,26 @@ const fs = require('fs');
 const path = require('path');
 const { nanoid } = require('nanoid');
 
-// Prefer Hugging Face's persistent storage mount (/data) when it exists and is
-// writable, so tools survive Space restarts. Falls back to a local folder,
-// which is wiped whenever the Space rebuilds.
+// Persist tools to /data (HF persistent storage) when USE_PERSISTENT_STORAGE
+// is explicitly set. Defaults to the local tools/ directory to avoid hanging
+// on a slow/broken network mount during startup.
 function resolveBaseDir() {
-  const candidate = '/data/forge-tools';
-  try {
-    fs.mkdirSync(candidate, { recursive: true });
-    fs.accessSync(candidate, fs.constants.W_OK);
-    return candidate;
-  } catch {
-    const fallback = path.join(__dirname, '..', 'tools');
-    fs.mkdirSync(fallback, { recursive: true });
-    return fallback;
+  if (process.env.USE_PERSISTENT_STORAGE) {
+    const candidate = '/data/forge-tools';
+    try {
+      fs.mkdirSync(candidate, { recursive: true });
+      fs.accessSync(candidate, fs.constants.W_OK);
+      return candidate;
+    } catch {}
   }
+  const fallback = path.join(__dirname, '..', 'tools');
+  fs.mkdirSync(fallback, { recursive: true });
+  return fallback;
 }
 
 const BASE_DIR = resolveBaseDir();
 const MANIFEST_PATH = path.join(BASE_DIR, 'manifest.json');
-const usingPersistentStorage = BASE_DIR.startsWith('/data');
+const usingPersistentStorage = !!(process.env.USE_PERSISTENT_STORAGE && BASE_DIR.startsWith('/data'));
 
 function loadManifest() {
   try {