feat(audit): 审计修复第四轮 — 跨会话搜索、LLM压缩集成、Presentation渲染器

- S9: MessageSearch 新增 Session/Global 双模式，Global 调用 VikingStorage memory_search
- M4b: LLM 压缩器集成到 kernel AgentLoop，支持 use_llm 配置切换
- M4c: 压缩时自动提取记忆到 VikingStorage (runtime + tauri 双路径)
- H6: 新增 ChartRenderer(recharts)、Document/Slideshow 完整渲染
- 累计修复 23 项，整体完成度 ~72%，真实可用率 ~80%

desktop/src/components/presentation/PresentationContainer.tsx

@@ -18,6 +18,7 @@ import { QuizRenderer } from './renderers/QuizRenderer';
 
 const SlideshowRenderer = React.lazy(() => import('./renderers/SlideshowRenderer').then(m => ({ default: m.SlideshowRenderer })));
 const DocumentRenderer = React.lazy(() => import('./renderers/DocumentRenderer').then(m => ({ default: m.DocumentRenderer })));
+const ChartRenderer = React.lazy(() => import('./renderers/ChartRenderer').then(m => ({ default: m.ChartRenderer })));
 
 interface PresentationContainerProps {
   /** Pipeline output data */
@@ -78,7 +79,7 @@ export function PresentationContainer({
     if (supportedTypes && supportedTypes.length > 0) {
       return supportedTypes.filter((t): t is PresentationType => t !== 'auto');
     }
-    return (['quiz', 'slideshow', 'document', 'whiteboard'] as PresentationType[]);
+    return (['quiz', 'slideshow', 'document', 'chart', 'whiteboard'] as PresentationType[]);
   }, [supportedTypes]);
 
   const renderContent = () => {
@@ -111,11 +112,21 @@ export function PresentationContainer({
 
       case 'whiteboard':
         return (
-          <div className="flex items-center justify-center h-64 bg-gray-50">
-            <p className="text-gray-500">白板渲染器开发中...</p>
+          <div className="flex flex-col items-center justify-center h-64 bg-gray-50 gap-3">
+            <span className="inline-flex items-center px-3 py-1 rounded-full text-xs font-medium bg-amber-100 text-amber-700">
+              即将推出
+            </span>
+            <p className="text-gray-500">白板渲染器开发中</p>
           </div>
         );
 
+      case 'chart':
+        return (
+          <React.Suspense fallback={<div className="h-64 animate-pulse bg-gray-100" />}>
+            <ChartRenderer data={data as Parameters<typeof ChartRenderer>[0]['data']} />
+          </React.Suspense>
+        );
+
       default:
         return (
           <div className="flex items-center justify-center h-64 bg-gray-50">