diff --git a/manifest.json b/manifest.json
index 940f702..bdedede 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,7 +2,7 @@
   "manifest_version": 3,
   "default_locale": "zh_CN",
   "name": "__MSG_extName__",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "__MSG_extDescription__",
   "permissions": [
     "storage",
diff --git a/package.json b/package.json
index a8307c1..7c59686 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cloud-drive-renamer",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "批量重命名工具，支持夸克网盘（阿里云盘和百度网盘开发中）",
   "type": "module",
   "scripts": {
diff --git a/src/adapters/quark/page-script.ts b/src/adapters/quark/page-script.ts
index 6fbc455..2698c33 100644
--- a/src/adapters/quark/page-script.ts
+++ b/src/adapters/quark/page-script.ts
@@ -186,8 +186,21 @@ window.__QUARK_PAGE_SCRIPT_READY__ = {
 
 // === PRIMARY: Set DOM-based flag for cross-world communication ===
 // This is the reliable method that works across MAIN and ISOLATED worlds
-document.body.dataset.quarkPageScriptReady = 'true';
-document.body.dataset.quarkPageScriptTimestamp = flagTimestamp.toString();
+// Defensive null check: document.body may be null at document_start
+if (document.body) {
+  // Fast path: body already exists (common case after DOMContentLoaded)
+  document.body.dataset.quarkPageScriptReady = 'true';
+  document.body.dataset.quarkPageScriptTimestamp = flagTimestamp.toString();
+} else {
+  // Fallback: defer to DOMContentLoaded when body is not ready yet
+  // This ensures we don't lose the DOM dataset signal even at document_start
+  document.addEventListener('DOMContentLoaded', () => {
+    const deferredTimestamp = Date.now();
+    document.body.dataset.quarkPageScriptReady = 'true';
+    document.body.dataset.quarkPageScriptTimestamp = deferredTimestamp.toString();
+  }, { once: true });
+}
 
 // Send postMessage event for real-time notification
+// Note: This is sent immediately regardless of body readiness for lowest latency
 window.postMessage({ type: 'QUARK_PAGE_SCRIPT_READY' }, '*');
diff --git a/src/shared/version.ts b/src/shared/version.ts
index d35d5c6..1afc934 100644
--- a/src/shared/version.ts
+++ b/src/shared/version.ts
@@ -10,19 +10,19 @@
  * 1. Edit version in package.json
  * 2. Run: npm run sync:version (or automatically via prebuild/predev)
  *
- * Generated at: 2025-12-17T03:32:33.289Z
+ * Generated at: 2025-12-17T04:47:58.196Z
  */
 
 /**
  * Application version number (e.g., "0.1.0")
  */
-export const APP_VERSION = '0.1.0' as const;
+export const APP_VERSION = '0.1.1' as const;
 
 /**
  * Application version with 'v' prefix (e.g., "v0.1.0")
  * Commonly used for display purposes
  */
-export const APP_VERSION_WITH_PREFIX = 'v0.1.0' as const;
+export const APP_VERSION_WITH_PREFIX = 'v0.1.1' as const;
 
 /**
  * Parse version into components
@@ -30,5 +30,5 @@ export const APP_VERSION_WITH_PREFIX = 'v0.1.0' as const;
 export const VERSION_PARTS = {
   major: 0,
   minor: 1,
-  patch: 0,
+  patch: 1,
 } as const;