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/Settings/About.tsx

@@ -34,10 +34,10 @@ export function About() {
       </div>
 
       <div className="mt-12 text-center text-xs text-gray-400">
-        2026 ZCLAW | Powered by OpenFang
+        2026 ZCLAW
       </div>
       <div className="text-center text-xs text-gray-400 space-y-1">
-        <p>基于 OpenFang Rust Agent OS 构建</p>
+        <p>基于 Rust Agent OS 构建</p>
         <div className="flex justify-center gap-4 mt-3">
           <a href="#" className="text-orange-500 hover:text-orange-600">隐私政策</a>
           <a href="#" className="text-orange-500 hover:text-orange-600">用户协议</a>

desktop/src/components/Settings/IMChannels.tsx

@@ -382,7 +382,7 @@ export function IMChannels() {
           <div className="text-xs text-blue-700 dark:text-blue-300">
             <p className="font-medium mb-1">高级配置</p>
             <p>账号绑定、消息路由等高级功能需要在 Gateway 配置文件中完成。</p>
-            <p className="mt-1">配置文件路径: <code className="bg-blue-100 dark:bg-blue-800 px-1 rounded">~/.openfang/openfang.toml</code></p>
+            <p className="mt-1">配置文件路径: <code className="bg-blue-100 dark:bg-blue-800 px-1 rounded">~/.zclaw/zclaw.toml</code></p>
           </div>
         </div>
       </div>

desktop/src/components/Settings/ModelsAPI.tsx

@@ -266,13 +266,30 @@ export function ModelsAPI() {
   };
 
   // 保存 Embedding 配置
-  const handleSaveEmbeddingConfig = () => {
+  const handleSaveEmbeddingConfig = async () => {
     const configToSave = {
       ...embeddingConfig,
       enabled: embeddingConfig.provider !== 'local' && embeddingConfig.apiKey.trim() !== '',
     };
     setEmbeddingConfig(configToSave);
     saveEmbeddingConfig(configToSave);
+
+    // Push config to Rust backend for semantic memory search
+    if (configToSave.enabled) {
+      try {
+        await invoke('viking_configure_embedding', {
+          provider: configToSave.provider,
+          apiKey: configToSave.apiKey,
+          model: configToSave.model || undefined,
+          endpoint: configToSave.endpoint || undefined,
+        });
+        setEmbeddingTestResult({ success: true, message: 'Embedding 配置已应用到语义记忆搜索' });
+      } catch (error) {
+        setEmbeddingTestResult({ success: false, message: `配置保存成功但应用失败: ${error}` });
+      }
+    } else {
+      setEmbeddingTestResult(null);
+    }
   };
 
   // 测试 Embedding API

desktop/src/components/Settings/Privacy.tsx

@@ -24,7 +24,7 @@ export function Privacy() {
         <h3 className="font-medium mb-2 text-gray-900">本地数据路径</h3>
         <div className="text-xs text-gray-500 mb-3">所有工作区文件、对话记录和 Agent 输出均存储在此本地目录。</div>
         <div className="p-3 bg-gray-50 border border-gray-200 rounded-lg text-xs text-gray-600 font-mono">
-          {workspaceInfo?.resolvedPath || workspaceInfo?.path || quickConfig.workspaceDir || '~/.openfang/zclaw-workspace'}
+          {workspaceInfo?.resolvedPath || workspaceInfo?.path || quickConfig.workspaceDir || '~/.zclaw/zclaw-workspace'}
         </div>
       </div>
 

desktop/src/components/Settings/UsageStats.tsx

@@ -1,19 +1,15 @@
 import { useEffect, useState } from 'react';
 import { useAgentStore } from '../../store/agentStore';
-import { useConnectionStore } from '../../store/connectionStore';
 import { BarChart3, TrendingUp, Clock, Zap } from 'lucide-react';
 
 export function UsageStats() {
   const usageStats = useAgentStore((s) => s.usageStats);
   const loadUsageStats = useAgentStore((s) => s.loadUsageStats);
-  const connectionState = useConnectionStore((s) => s.connectionState);
   const [timeRange, setTimeRange] = useState<'7d' | '30d' | 'all'>('7d');
 
   useEffect(() => {
-    if (connectionState === 'connected') {
-      loadUsageStats();
-    }
-  }, [connectionState]);
+    loadUsageStats();
+  }, [loadUsageStats]);
 
   const stats = usageStats || { totalSessions: 0, totalMessages: 0, totalTokens: 0, byModel: {} };
   const models = Object.entries(stats.byModel || {});
@@ -56,7 +52,7 @@ export function UsageStats() {
           </button>
         </div>
       </div>
-      <div className="text-xs text-gray-500 mb-4">本设备所有已保存对话的 Token 用量汇总。</div>
+      <div className="text-xs text-gray-500 mb-4">本设备所有已保存对话的使用统计。</div>
 
       {/* 主要统计卡片 */}
       <div className="grid grid-cols-4 gap-4 mb-8">
@@ -89,6 +85,9 @@ export function UsageStats() {
       {/* 总 Token 使用量概览 */}
       <div className="bg-white rounded-xl border border-gray-200 p-5 shadow-sm mb-6">
         <h3 className="text-sm font-semibold mb-4 text-gray-900">Token 使用概览</h3>
+        {stats.totalTokens === 0 ? (
+          <p className="text-xs text-gray-400">Token 用量将在后续版本中支持</p>
+        ) : (
         <div className="flex items-center gap-4">
           <div className="flex-1">
             <div className="flex justify-between text-xs text-gray-500 mb-1">
@@ -111,6 +110,7 @@ export function UsageStats() {
             <div className="text-xs text-gray-500">总计</div>
           </div>
         </div>
+        )}
       </div>
 
       {/* 按模型分组 */}

desktop/src/components/Settings/Workspace.tsx

@@ -7,18 +7,18 @@ export function Workspace() {
   const workspaceInfo = useConfigStore((s) => s.workspaceInfo);
   const loadWorkspaceInfo = useConfigStore((s) => s.loadWorkspaceInfo);
   const saveQuickConfig = useConfigStore((s) => s.saveQuickConfig);
-  const [projectDir, setProjectDir] = useState('~/.openfang/zclaw-workspace');
+  const [projectDir, setProjectDir] = useState('~/.zclaw/zclaw-workspace');
 
   useEffect(() => {
     loadWorkspaceInfo().catch(silentErrorHandler('Workspace'));
   }, []);
 
   useEffect(() => {
-    setProjectDir(quickConfig.workspaceDir || workspaceInfo?.path || '~/.openfang/zclaw-workspace');
+    setProjectDir(quickConfig.workspaceDir || workspaceInfo?.path || '~/.zclaw/zclaw-workspace');
   }, [quickConfig.workspaceDir, workspaceInfo?.path]);
 
   const handleWorkspaceBlur = async () => {
-    const nextValue = projectDir.trim() || '~/.openfang/zclaw-workspace';
+    const nextValue = projectDir.trim() || '~/.zclaw/zclaw-workspace';
     setProjectDir(nextValue);
     await saveQuickConfig({ workspaceDir: nextValue });
     await loadWorkspaceInfo();