refactor: 统一项目名称从OpenFang到ZCLAW

重构所有代码和文档中的项目名称，将OpenFang统一更新为ZCLAW。包括：
- 配置文件中的项目名称
- 代码注释和文档引用
- 环境变量和路径
- 类型定义和接口名称
- 测试用例和模拟数据

同时优化部分代码结构，移除未使用的模块，并更新相关依赖项。

desktop/src/components/VikingPanel.tsx

@@ -1,8 +1,8 @@
 /**
- * VikingPanel - OpenViking Semantic Memory UI
+ * VikingPanel - ZCLAW Semantic Memory UI
  *
  * Provides interface for semantic search and knowledge base management.
- * OpenViking is an optional sidecar for semantic memory operations.
+ * Uses native Rust SqliteStorage with TF-IDF semantic search.
  */
 import { useState, useEffect } from 'react';
 import {
@@ -11,16 +11,13 @@ import {
   AlertCircle,
   CheckCircle,
   FileText,
-  Server,
-  Play,
-  Square,
+  Database,
 } from 'lucide-react';
 import {
   getVikingStatus,
   findVikingResources,
-  getVikingServerStatus,
-  startVikingServer,
-  stopVikingServer,
+  listVikingResources,
+  readVikingResource,
 } from '../lib/viking-client';
 import type { VikingStatus, VikingFindResult } from '../lib/viking-client';
 
@@ -30,17 +27,28 @@ export function VikingPanel() {
   const [searchQuery, setSearchQuery] = useState('');
   const [searchResults, setSearchResults] = useState<VikingFindResult[]>([]);
   const [isSearching, setIsSearching] = useState(false);
-  const [serverRunning, setServerRunning] = useState(false);
   const [message, setMessage] = useState<{ type: 'success' | 'error'; text: string } | null>(null);
+  const [memoryCount, setMemoryCount] = useState<number | null>(null);
+  const [expandedUri, setExpandedUri] = useState<string | null>(null);
+  const [expandedContent, setExpandedContent] = useState<string | null>(null);
+  const [isLoadingL2, setIsLoadingL2] = useState(false);
 
   const loadStatus = async () => {
     setIsLoading(true);
+    setMessage(null);
     try {
       const vikingStatus = await getVikingStatus();
       setStatus(vikingStatus);
 
-      const serverStatus = await getVikingServerStatus();
-      setServerRunning(serverStatus.running);
+      if (vikingStatus.available) {
+        // Load memory count
+        try {
+          const resources = await listVikingResources('/');
+          setMemoryCount(resources.length);
+        } catch {
+          setMemoryCount(null);
+        }
+      }
     } catch (error) {
       console.error('Failed to load Viking status:', error);
       setStatus({ available: false, error: String(error) });
@@ -74,22 +82,22 @@ export function VikingPanel() {
     }
   };
 
-  const handleServerToggle = async () => {
+  const handleExpandL2 = async (uri: string) => {
+    if (expandedUri === uri) {
+      setExpandedUri(null);
+      setExpandedContent(null);
+      return;
+    }
+
+    setExpandedUri(uri);
+    setIsLoadingL2(true);
     try {
-      if (serverRunning) {
-        await stopVikingServer();
-        setServerRunning(false);
-        setMessage({ type: 'success', text: '服务器已停止' });
-      } else {
-        await startVikingServer();
-        setServerRunning(true);
-        setMessage({ type: 'success', text: '服务器已启动' });
-      }
-    } catch (error) {
-      setMessage({
-        type: 'error',
-        text: `操作失败: ${error instanceof Error ? error.message : '未知错误'}`,
-      });
+      const fullContent = await readVikingResource(uri, 'L2');
+      setExpandedContent(fullContent);
+    } catch {
+      setExpandedContent(null);
+    } finally {
+      setIsLoadingL2(false);
     }
   };
 
@@ -100,7 +108,7 @@ export function VikingPanel() {
         <div>
           <h1 className="text-xl font-bold text-gray-900 dark:text-white">语义记忆</h1>
           <p className="text-xs text-gray-500 dark:text-gray-400 mt-1">
-            OpenViking 语义搜索引擎
+            ZCLAW 语义记忆搜索引擎
           </p>
         </div>
         <div className="flex gap-2 items-center">
@@ -125,10 +133,9 @@ export function VikingPanel() {
           <div className="flex items-start gap-2">
             <AlertCircle className="w-4 h-4 text-amber-500 mt-0.5" />
             <div className="text-xs text-amber-700 dark:text-amber-300">
-              <p className="font-medium">OpenViking CLI 不可用</p>
+              <p className="font-medium">语义记忆存储不可用</p>
               <p className="mt-1">
-                请安装 OpenViking CLI 或设置{' '}
-                <code className="bg-amber-100 dark:bg-amber-800 px-1 rounded">ZCLAW_VIKING_BIN</code> 环境变量。
+                本地 SQLite 存储初始化失败。请检查数据目录权限后重启应用。
               </p>
               {status?.error && (
                 <p className="mt-1 text-amber-600 dark:text-amber-400 font-mono text-xs">
@@ -158,47 +165,37 @@ export function VikingPanel() {
         </div>
       )}
 
-      {/* Server Control */}
+      {/* Storage Info */}
       {status?.available && (
         <div className="bg-white dark:bg-gray-800 rounded-xl border border-gray-200 dark:border-gray-700 p-4 mb-6 shadow-sm">
-          <div className="flex items-center justify-between">
-            <div className="flex items-center gap-3">
-              <div
-                className={`w-10 h-10 rounded-xl flex items-center justify-center ${
-                  serverRunning
-                    ? 'bg-gradient-to-br from-green-500 to-emerald-500 text-white'
-                    : 'bg-gray-200 dark:bg-gray-700 text-gray-400'
-                }`}
-              >
-                <Server className="w-4 h-4" />
+          <div className="flex items-center gap-3 mb-3">
+            <div className="w-10 h-10 rounded-xl bg-gradient-to-br from-blue-500 to-indigo-500 flex items-center justify-center">
+              <Database className="w-4 h-4 text-white" />
+            </div>
+            <div>
+              <div className="text-sm font-medium text-gray-900 dark:text-white">
+                本地存储
               </div>
-              <div>
-                <div className="text-sm font-medium text-gray-900 dark:text-white">
-                  Viking Server
-                </div>
-                <div className="text-xs text-gray-500 dark:text-gray-400">
-                  {serverRunning ? '运行中' : '已停止'}
-                </div>
+              <div className="text-xs text-gray-500 dark:text-gray-400">
+                {status.version || 'Native'} · {status.dataDir || '默认路径'}
               </div>
             </div>
-            <button
-              onClick={handleServerToggle}
-              className={`px-4 py-2 rounded-lg flex items-center gap-2 text-sm transition-colors ${
-                serverRunning
-                  ? 'bg-red-100 text-red-600 hover:bg-red-200 dark:bg-red-900/30 dark:text-red-400'
-                  : 'bg-green-100 text-green-600 hover:bg-green-200 dark:bg-green-900/30 dark:text-green-400'
-              }`}
-            >
-              {serverRunning ? (
-                <>
-                  <Square className="w-4 h-4" /> 停止
-                </>
-              ) : (
-                <>
-                  <Play className="w-4 h-4" /> 启动
-                </>
-              )}
-            </button>
+          </div>
+          <div className="flex gap-4 text-xs">
+            <div className="flex items-center gap-1.5 text-gray-600 dark:text-gray-300">
+              <CheckCircle className="w-3.5 h-3.5 text-green-500" />
+              <span>SQLite + FTS5</span>
+            </div>
+            <div className="flex items-center gap-1.5 text-gray-600 dark:text-gray-300">
+              <CheckCircle className="w-3.5 h-3.5 text-green-500" />
+              <span>TF-IDF 语义评分</span>
+            </div>
+            {memoryCount !== null && (
+              <div className="flex items-center gap-1.5 text-gray-600 dark:text-gray-300">
+                <CheckCircle className="w-3.5 h-3.5 text-green-500" />
+                <span>{memoryCount} 条记忆</span>
+              </div>
+            )}
           </div>
         </div>
       )}
@@ -251,21 +248,43 @@ export function VikingPanel() {
                     <span className="text-sm font-medium text-gray-900 dark:text-white truncate">
                       {result.uri}
                     </span>
-                    <span className="text-xs text-gray-400 bg-gray-100 dark:bg-gray-700 px-2 py-0.5 rounded">
+                    <span className={`text-xs px-2 py-0.5 rounded ${
+                      result.level === 'L1'
+                        ? 'text-green-600 bg-green-100 dark:bg-green-900/30 dark:text-green-400'
+                        : 'text-gray-400 bg-gray-100 dark:bg-gray-700'
+                    }`}>
                       {result.level}
                     </span>
                     <span className="text-xs text-blue-600 dark:text-blue-400">
                       {Math.round(result.score * 100)}%
                     </span>
                   </div>
-                  {result.overview && (
-                    <p className="text-xs text-gray-500 dark:text-gray-400 mt-1 line-clamp-2">
-                      {result.overview}
-                    </p>
-                  )}
-                  <p className="text-xs text-gray-600 dark:text-gray-300 mt-2 line-clamp-3 font-mono">
+                  <p className="text-xs text-gray-600 dark:text-gray-300 mt-2 line-clamp-3">
                     {result.content}
                   </p>
+                  {result.level === 'L1' && (
+                    <button
+                      onClick={() => handleExpandL2(result.uri)}
+                      className="mt-1.5 text-xs text-blue-500 hover:text-blue-600 dark:text-blue-400 dark:hover:text-blue-300 transition-colors"
+                    >
+                      {expandedUri === result.uri ? '收起全文' : '展开全文'}
+                    </button>
+                  )}
+                  {expandedUri === result.uri && (
+                    <div className="mt-2 p-3 bg-gray-50 dark:bg-gray-900/50 rounded-lg border border-gray-200 dark:border-gray-700">
+                      {isLoadingL2 ? (
+                        <div className="flex items-center gap-2 text-xs text-gray-400">
+                          <RefreshCw className="w-3 h-3 animate-spin" /> 加载中...
+                        </div>
+                      ) : expandedContent ? (
+                        <p className="text-xs text-gray-600 dark:text-gray-300 whitespace-pre-wrap font-mono">
+                          {expandedContent}
+                        </p>
+                      ) : (
+                        <p className="text-xs text-gray-400">加载失败</p>
+                      )}
+                    </div>
+                  )}
                 </div>
               </div>
             </div>
@@ -275,11 +294,11 @@ export function VikingPanel() {
 
       {/* Info Section */}
       <div className="mt-6 p-4 bg-gray-50 dark:bg-gray-800/50 rounded-lg border border-gray-200 dark:border-gray-700">
-        <h3 className="text-sm font-medium text-gray-900 dark:text-white mb-2">关于 OpenViking</h3>
+        <h3 className="text-sm font-medium text-gray-900 dark:text-white mb-2">关于语义记忆</h3>
         <ul className="text-xs text-gray-500 dark:text-gray-400 space-y-1">
-          <li>• 语义搜索引擎，支持自然语言查询</li>
-          <li>• 自动提取和索引知识资源</li>
-          <li>• 支持多种文档格式和代码文件</li>
+          <li>• 基于本地 SQLite + TF-IDF 的语义搜索引擎</li>
+          <li>• 自动提取和索引对话中的知识资源</li>
+          <li>• 支持自然语言查询知识库</li>
           <li>• 可作为本地知识库增强 AI 对话</li>
         </ul>
       </div>