feat: 新增技能编排引擎和工作流构建器组件

refactor: 统一Hands系统常量到单个源文件
refactor: 更新Hands中文名称和描述

fix: 修复技能市场在连接状态变化时重新加载
fix: 修复身份变更提案的错误处理逻辑

docs: 更新多个功能文档的验证状态和实现位置
docs: 更新Hands系统文档

test: 添加测试文件验证工作区路径

desktop/src/components/WorkflowBuilder/index.ts

@@ -0,0 +1,21 @@
+/**
+ * Workflow Builder Components
+ *
+ * Export all workflow builder components.
+ */
+
+export { WorkflowBuilder, WorkflowBuilderInternal } from './WorkflowBuilder';
+export { NodePalette } from './NodePalette';
+export { PropertyPanel } from './PropertyPanel';
+export { WorkflowToolbar } from './WorkflowToolbar';
+
+// Node components
+export { InputNode } from './nodes/InputNode';
+export { LlmNode } from './nodes/LlmNode';
+export { SkillNode } from './nodes/SkillNode';
+export { HandNode } from './nodes/HandNode';
+export { ConditionNode } from './nodes/ConditionNode';
+export { ParallelNode } from './nodes/ParallelNode';
+export { ExportNode } from './nodes/ExportNode';
+export { HttpNode } from './nodes/HttpNode';
+export { OrchestrationNode } from './nodes/OrchestrationNode';