diff --git a/dist.zip b/dist.zip
new file mode 100644
index 0000000..9fc9acd
Binary files /dev/null and b/dist.zip differ
diff --git a/release/dify-batch-tester-release-2026-04-20.tar.gz b/release/dify-batch-tester-release-2026-04-20.tar.gz
new file mode 100644
index 0000000..313fd66
Binary files /dev/null and b/release/dify-batch-tester-release-2026-04-20.tar.gz differ
diff --git a/release/dify-batch-tester-release-2026-04-29.tar.gz b/release/dify-batch-tester-release-2026-04-29.tar.gz
new file mode 100644
index 0000000..45b622a
Binary files /dev/null and b/release/dify-batch-tester-release-2026-04-29.tar.gz differ
diff --git a/src/App.tsx b/src/App.tsx
index f77c5df..60709b8 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -38,6 +38,26 @@ import { Dialog, DialogContent, DialogDescription, DialogHeader, DialogTitle, Di
 
 import { DifyInput, TestCase, DifyConfig, AppMode, NodeTraceStep, NodeStatus, TestResult } from './types';
 
+const createId = () => {
+  if (globalThis.crypto?.randomUUID) {
+    return globalThis.crypto.randomUUID();
+  }
+
+  if (globalThis.crypto?.getRandomValues) {
+    const bytes = new Uint8Array(16);
+    globalThis.crypto.getRandomValues(bytes);
+    bytes[6] = (bytes[6] & 0x0f) | 0x40;
+    bytes[8] = (bytes[8] & 0x3f) | 0x80;
+
+    return Array.from(bytes, (byte, index) => {
+      const hex = byte.toString(16).padStart(2, '0');
+      return [4, 6, 8, 10].includes(index) ? `-${hex}` : hex;
+    }).join('');
+  }
+
+  return `id-${Date.now()}-${Math.random().toString(36).slice(2)}`;
+};
+
 // Parse a Dify SSE stream (workflow/advanced-chat) into a TestResult.
 // Emits live updates via onUpdate after each meaningful event so the UI
 // can reflect node-level progress as it arrives.
@@ -202,7 +222,7 @@ export default function App() {
   const [testCases, setTestCases] = useState<TestCase[]>([]);
   const [isExecuting, setIsExecuting] = useState(false);
   const [isStopping, setIsStopping] = useState(false);
-  const [captureTrace, setCaptureTrace] = useState(false);
+  const [captureTrace, setCaptureTrace] = useState(true);
   const [traceDialogResult, setTraceDialogResult] = useState<TestResult | null>(null);
   const [difyConfig, setDifyConfig] = useState<DifyConfig>({
     apiKey: '',
@@ -256,7 +276,7 @@ export default function App() {
       if (response.status === 404) {
         setInputs([]);
         setTestCases([{
-          id: crypto.randomUUID(),
+          id: createId(),
           inputs: {},
           times: 1,
           status: 'idle',
@@ -365,7 +385,7 @@ export default function App() {
           });
 
           return {
-            id: crypto.randomUUID(),
+            id: createId(),
             inputs: testCaseInputs,
             query: difyConfig.appMode === 'chat' ? (row['query'] || row['Query'] || '') : undefined,
             times: parseInt(row['times'] || row['Times'] || '1') || 1,
@@ -389,7 +409,7 @@ export default function App() {
 
   const addTestCase = () => {
     const newCase: TestCase = {
-      id: crypto.randomUUID(),
+      id: createId(),
       inputs: {},
       query: difyConfig.appMode === 'chat' ? '' : undefined,
       times: 1,
@@ -1145,7 +1165,7 @@ export default function App() {
                   <Button 
                     onClick={() => {
                       setTestCases([{
-                        id: crypto.randomUUID(),
+                        id: createId(),
                         inputs: Object.fromEntries(inputs.map(i => [i.name, ''])),
                         times: 1,
                         status: 'idle',