Update server.js

server.js

@@ -45,6 +45,29 @@ webpush.setVapidDetails(
   VAPID_KEYS.privateKey
 );
 
+function verifyBucketMount() {
+  try {
+    const stat = fs.statSync(DATA_DIR);
+
+    if (!stat.isDirectory()) {
+      throw new Error("/data is not a directory");
+    }
+
+    const testFile = path.join(DATA_DIR, ".mount-test");
+
+    fs.writeFileSync(testFile, "ok");
+    fs.unlinkSync(testFile);
+
+    console.log("[Storage] Bucket mount OK:", DATA_DIR);
+
+  } catch (err) {
+    console.error("[Storage] Bucket mount FAILED:", err.message);
+    process.exit(1);
+  }
+}
+
+verifyBucketMount();
+
 // ── Transparent 1×1 PNG ───────────────────────────────────────────────────
 const PIXEL_PNG = Buffer.from(
   "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR4AWJiYGBgAAAAAP//XRcpzQAAAAZJREFUAwAADwADJDd96QAAAABJRU5ErkJggg==",