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

lefthook.yml

@@ -0,0 +1,35 @@
+# EXAMPLE USAGE:
+#
+#   Refer for explanation to following link:
+#   https://github.com/evilmartians/lefthook/blob/master/docs/configuration.md
+#
+# pre-push:
+#   commands:
+#     packages-audit:
+#       tags: frontend security
+#       run: yarn audit
+#     gems-audit:
+#       tags: backend security
+#       run: bundle audit
+#
+# pre-commit:
+#   parallel: true
+#   commands:
+#     eslint:
+#       glob: "*.{js,ts,jsx,tsx}"
+#       run: yarn eslint {staged_files}
+#     rubocop:
+#       tags: backend style
+#       glob: "*.rb"
+#       exclude: '(^|/)(application|routes)\.rb$'
+#       run: bundle exec rubocop --force-exclusion {all_files}
+#     govet:
+#       tags: backend style
+#       files: git ls-files -m
+#       glob: "*.go"
+#       run: go vet {files}
+#   scripts:
+#     "hello.js":
+#       runner: node
+#     "any.go":
+#       runner: go run