feat: 配置并运行 n8n 本地开发环境

详细说明:
- 升级 pnpm 到 10.15.1 版本以满足项目要求
- 安装所有项目依赖
- 成功构建 n8n 项目
- 启动 n8n 服务器在 localhost:5678
- 创建 CLAUDE.md 文件记录开发规范
- 配置 Serena 项目管理和记忆系统
- 修改文件: CLAUDE.md, .serena/*, build.log, lefthook.yml
- 影响模块: 开发环境配置和项目运行

.claude/settings.local.json

@@ -47,7 +47,15 @@
       "Bash(/Users/xiaoqi/Documents/Dev/Project/2025-08-12_Saas数据生成/venv/bin/python3 src/就业管家首页/main.py)",
       "Bash(/Users/xiaoqi/Documents/Dev/Project/2025-08-12_Saas数据生成/venv/bin/python3:*)",
       "mcp__sequential-thinking__sequentialthinking",
-      "Bash(test:*)"
+      "Bash(test:*)",
+      "Bash(pnpm install:*)",
+      "Bash(pnpm:*)",
+      "Bash(nvm list:*)",
+      "Bash(export PNPM_HOME=\"/Users/xiaoqi/Library/pnpm\")",
+      "Bash(export PATH=\"$PNPM_HOME:$PATH\")",
+      "Bash(brew upgrade:*)",
+      "Bash(npm install:*)",
+      "Bash(git add:*)"
     ],
     "defaultMode": "acceptEdits",
     "additionalDirectories": [