fix: 修复TypeScript配置错误并更新项目文档

详细说明:
- 修复了@n8n/config包的TypeScript配置错误
- 移除了不存在的jest-expect-message类型引用
- 清理了所有TypeScript构建缓存
- 更新了可行性分析文档，添加了技术实施方案
- 更新了Agent prompt文档
- 添加了会展策划工作流文档
- 包含了n8n-chinese-translation子项目
- 添加了exhibition-demo展示系统框架

n8n-n8n-1.109.2/packages/testing/playwright/composables/CanvasComposer 2.ts

@@ -0,0 +1,40 @@
+import type { n8nPage } from '../pages/n8nPage';
+
+export class CanvasComposer {
+	constructor(private readonly n8n: n8nPage) {}
+
+	/**
+	 * Pin the data on a node. Then close the node.
+	 * @param nodeName - The name of the node to pin the data on.
+	 */
+	async pinNodeData(nodeName: string) {
+		await this.n8n.canvas.openNode(nodeName);
+		await this.n8n.ndv.togglePinData();
+		await this.n8n.ndv.close();
+	}
+
+	/**
+	 * Execute a node and wait for success toast notification
+	 * @param nodeName - The node to execute
+	 */
+	async executeNodeAndWaitForToast(nodeName: string): Promise<void> {
+		await this.n8n.canvas.executeNode(nodeName);
+		await this.n8n.notifications.waitForNotificationAndClose('Node executed successfully');
+	}
+
+	/**
+	 * Copy selected nodes and verify success toast
+	 */
+	async copySelectedNodesWithToast(): Promise<void> {
+		await this.n8n.canvas.copyNodes();
+		await this.n8n.notifications.waitForNotificationAndClose('Copied to clipboard');
+	}
+
+	/**
+	 * Select all nodes and copy them
+	 */
+	async selectAllAndCopy(): Promise<void> {
+		await this.n8n.canvas.selectAll();
+		await this.copySelectedNodesWithToast();
+	}
+}