diff --git a/.claude/settings.local.json b/.claude/settings.local.json
new file mode 100644
index 0000000..1552e97
--- /dev/null
+++ b/.claude/settings.local.json
@@ -0,0 +1,9 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(git add:*)",
+      "Bash(git commit:*)",
+      "Bash(git push:*)"
+    ]
+  }
+}
diff --git a/electron/main.mjs b/electron/main.mjs
index a74943c..d6021a8 100644
--- a/electron/main.mjs
+++ b/electron/main.mjs
@@ -30,6 +30,9 @@ if (argsGlobal.headless) {
 }
 
 app.commandLine.appendSwitch('disable-gpu-shader-disk-cache');
+app.commandLine.appendSwitch('enable-webgl');
+app.commandLine.appendSwitch('ignore-gpu-blacklist');
+app.commandLine.appendSwitch('enable-accelerated-2d-canvas');
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
diff --git a/src/App.tsx b/src/App.tsx
index 3b2a8e9..95b2546 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -19,6 +19,21 @@ console.log = (...args) => { window.electronAPI?.log('log', ...args); _origLog.a
 console.error = (...args) => { window.electronAPI?.log('error', ...args); _origError.apply(console, args); };
 console.warn = (...args) => { window.electronAPI?.log('warn', ...args); _origWarn.apply(console, args); };
 
+const STORAGE_KEY = 'xc-docs-config';
+
+function loadStoredDocsPath(): string {
+  try {
+    const stored = localStorage.getItem(STORAGE_KEY);
+    if (stored) {
+      const config = JSON.parse(stored);
+      return config.docsPath || '';
+    }
+  } catch {
+    // Ignore parse errors
+  }
+  return '';
+}
+
 type Page = 'docs' | 'blueprint';
 
 declare global {
@@ -33,7 +48,7 @@ declare global {
 
 function App() {
   const [currentPage, setCurrentPage] = useState<Page>('docs');
-  const [docsPath, setDocsPath] = useState<string>('');
+  const [docsPath, setDocsPath] = useState<string>(loadStoredDocsPath());
   const [showAddModal, setShowAddModal] = useState(false);
 
   // Docs state lifted from ApiDocViewer to persist across view changes
@@ -89,7 +104,8 @@ function App() {
       <main className="flex-1 overflow-hidden">
         {currentPage === 'docs' ? (
           <ApiDocViewer
-            onDocsPathChange={setDocsPath}
+            docsPath={docsPath}
+            setDocsPath={setDocsPath}
             showAddModal={showAddModal}
             onCloseAddModal={() => setShowAddModal(false)}
             externalDocs={externalDocs}
diff --git a/src/components/ApiDocViewer.tsx b/src/components/ApiDocViewer.tsx
index 63ebc77..518907f 100644
--- a/src/components/ApiDocViewer.tsx
+++ b/src/components/ApiDocViewer.tsx
@@ -13,7 +13,8 @@ interface ExternalDoc {
 }
 
 interface ApiDocViewerProps {
-  onDocsPathChange?: (path: string) => void;
+  docsPath?: string;
+  setDocsPath?: (path: string) => void;
   showAddModal?: boolean;
   onCloseAddModal?: () => void;
   externalDocs: ExternalDoc[];
@@ -45,7 +46,8 @@ function saveStoredConfig(docsPath: string, externalDocs: ExternalDoc[], selecte
 }
 
 export const ApiDocViewer = ({
-  onDocsPathChange,
+  docsPath: docsPathProp,
+  setDocsPath: setDocsPathProp,
   showAddModal,
   onCloseAddModal,
   externalDocs,
@@ -59,10 +61,17 @@ export const ApiDocViewer = ({
 }: ApiDocViewerProps) => {
   const stored = loadStoredConfig();
   const [showModal, setShowModal] = useState(false)
-  const [docsPath, setDocsPath] = useState(stored.docsPath)
+  const [docsPath, setDocsPath] = useState(docsPathProp ?? stored.docsPath)
   const [isLoading, setIsLoading] = useState(false)
   const [errorMsg, setErrorMsg] = useState<string | null>(null)
 
+  // Sync with prop when it changes (e.g., when switching views back to docs)
+  useEffect(() => {
+    if (docsPathProp !== undefined) {
+      setDocsPath(docsPathProp)
+    }
+  }, [docsPathProp])
+
   useEffect(() => {
     if (showAddModal) {
       setShowModal(true)
@@ -94,8 +103,9 @@ export const ApiDocViewer = ({
     }
   }, [externalDocs, fileTree, selectedPath, stored.selectedPath, setSelectedPath, setCurrentContent])
 
+  // Save to localStorage when docsPath changes
   useEffect(() => {
-    if (docsPath && externalDocs.length > 0) {
+    if (docsPath) {
       saveStoredConfig(docsPath, externalDocs, selectedPath)
     }
   }, [docsPath, externalDocs, selectedPath])
@@ -212,7 +222,7 @@ export const ApiDocViewer = ({
     if (success) {
       setShowModal(false)
       onCloseAddModal?.()
-      onDocsPathChange?.(docsPath.trim())
+      setDocsPathProp?.(docsPath.trim())
     }
   }
 
diff --git a/src/components/blueprint/BlueprintPage.tsx b/src/components/blueprint/BlueprintPage.tsx
index b65b3d9..c4495fb 100644
--- a/src/components/blueprint/BlueprintPage.tsx
+++ b/src/components/blueprint/BlueprintPage.tsx
@@ -1,8 +1,20 @@
 import Scene3D from './Scene3D';
 import DetailPanel from './DetailPanel';
 import { useBlueprintStore } from '../../store/blueprintStore';
-import { useEffect, useCallback } from 'react';
-import { parseBlueprintFromMd } from '../../data/blueprintParser';
+import { useEffect, useCallback, Component, ReactNode } from 'react';
+import { parseBlueprintFromMd, blueprintData } from '../../data/blueprintParser';
+
+class ErrorBoundary extends Component<{ children: ReactNode }, { hasError: boolean }> {
+  state = { hasError: false };
+  static getDerivedStateFromError() { return { hasError: true }; }
+  componentDidCatch(e: Error, info: React.ErrorInfo) {
+    console.error('[BlueprintPage] Error:', e, info);
+  }
+  render() {
+    if (this.state.hasError) return <div className="text-white p-4">3D渲染出错</div>;
+    return this.props.children;
+  }
+}
 
 interface BlueprintPageProps {
   docsPath: string;
@@ -10,9 +22,13 @@ interface BlueprintPageProps {
 
 export default function BlueprintPage({ docsPath }: BlueprintPageProps) {
   const setBlueprintData = useBlueprintStore(state => state.setBlueprintData);
-  
+
   const loadBlueprint = useCallback(async () => {
-    if (!docsPath) return;
+    // Use default blueprint data if no docsPath is set
+    if (!docsPath) {
+      setBlueprintData(blueprintData);
+      return;
+    }
 
     const blueprintPath = docsPath.replace(/\\/g, '/') + '/blueprint.md';
     let content: string | null = null;
@@ -31,6 +47,9 @@ export default function BlueprintPage({ docsPath }: BlueprintPageProps) {
     if (content) {
       const data = parseBlueprintFromMd(content);
       setBlueprintData(data);
+    } else {
+      // Fallback to default if file not found
+      setBlueprintData(blueprintData);
     }
   }, [docsPath, setBlueprintData]);
   
@@ -41,7 +60,9 @@ export default function BlueprintPage({ docsPath }: BlueprintPageProps) {
   return (
     <div className="flex h-full">
       <div className="flex-1">
-        <Scene3D />
+        <ErrorBoundary>
+          <Scene3D />
+        </ErrorBoundary>
       </div>
       <DetailPanel />
     </div>
diff --git a/src/components/blueprint/Scene3D.tsx b/src/components/blueprint/Scene3D.tsx
index f6b544f..e4517dc 100644
--- a/src/components/blueprint/Scene3D.tsx
+++ b/src/components/blueprint/Scene3D.tsx
@@ -6,14 +6,22 @@ import SystemStructure from './SystemStructure';
 export default function Scene3D() {
   return (
     <div className="w-full h-full bg-black">
-      <Canvas>
+      <Canvas
+        gl={{
+          antialias: true,
+          alpha: false,
+          powerPreference: 'high-performance',
+          failIfMajorPerformanceCaveat: false,
+        }}
+        dpr={[1, 2]}
+      >
         <PerspectiveCamera makeDefault position={[12, 10, 12]} fov={50} />
         <OrbitControls enablePan enableZoom enableRotate />
-        
+
         <ambientLight intensity={0.8} />
         <directionalLight position={[10, 20, 10]} intensity={1.5} />
         <pointLight position={[-10, 10, -10]} intensity={0.5} color="#ffffff" />
-        
+
         <Suspense fallback={null}>
           <SystemStructure />
         </Suspense>