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/lib/kernel-client.ts

@@ -2,7 +2,7 @@
  * ZCLAW Kernel Client (Tauri Internal)
  *
  * Client for communicating with the internal ZCLAW Kernel via Tauri commands.
- * This replaces the external OpenFang Gateway WebSocket connection.
+ * This replaces the external ZCLAW Gateway WebSocket connection.
  *
  * Phase 5 of Intelligence Layer Migration.
  */
@@ -648,24 +648,14 @@ export class KernelClient {
    * Approve a hand execution
    */
   async approveHand(name: string, runId: string, approved: boolean, reason?: string): Promise<{ status: string }> {
-    try {
-      return await invoke('hand_approve', { handName: name, runId, approved, reason });
-    } catch {
-      this.log('warn', `hand_approve not yet implemented, returning fallback`);
-      return { status: approved ? 'approved' : 'rejected' };
-    }
+    return await invoke('hand_approve', { handName: name, runId, approved, reason });
   }
 
   /**
    * Cancel a hand execution
    */
   async cancelHand(name: string, runId: string): Promise<{ status: string }> {
-    try {
-      return await invoke('hand_cancel', { handName: name, runId });
-    } catch {
-      this.log('warn', `hand_cancel not yet implemented, returning fallback`);
-      return { status: 'cancelled' };
-    }
+    return await invoke('hand_cancel', { handName: name, runId });
   }
 
   /**