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。

tests/desktop/store/configStore.test.ts

@@ -36,8 +36,8 @@ function resetMocks() {
   mockClient = createMockClient();
 
   mockClient.getWorkspaceInfo = vi.fn().mockResolvedValue({
-    path: '~/.openfang/workspace',
-    resolvedPath: '/home/user/.openfang/workspace',
+    path: '~/.zclaw/workspace',
+    resolvedPath: '/home/user/.zclaw/workspace',
     exists: true,
     fileCount: 42,
     totalSize: 1024000,
@@ -48,7 +48,7 @@ function resetMocks() {
       agentName: 'ZCLAW',
       theme: 'dark',
       gatewayUrl: 'ws://127.0.0.1:4200/ws',
-      workspaceDir: '~/.openfang/workspace',
+      workspaceDir: '~/.zclaw/workspace',
     },
   });
 
@@ -257,8 +257,8 @@ describe('configStore', () => {
       expect(mockClient.getWorkspaceInfo).toHaveBeenCalledTimes(1);
       const state = useConfigStore.getState();
       expect(state.workspaceInfo).toMatchObject({
-        path: '~/.openfang/workspace',
-        resolvedPath: '/home/user/.openfang/workspace',
+        path: '~/.zclaw/workspace',
+        resolvedPath: '/home/user/.zclaw/workspace',
         exists: true,
         fileCount: 42,
         totalSize: 1024000,