n8n Workflow Orchestration：用可视化工作流托管外部 API 调用

• n8n instance is deployed with secure credential storage.
• Webhook contract (payload schema + auth) is agreed between OpenClaw and n8n.

1. Move third-party API actions into n8n workflows and keep OpenClaw as orchestrator.
2. Pass minimal context in webhook payload and store run IDs for traceability.
3. Implement retry/error branches in n8n, returning normalized status to OpenClaw.
4. Audit workflow runs weekly and rotate credentials periodically.

• Do not leak secrets in webhook URLs or logs.
• n8n node behavior/version compatibility should be pinned per environment（需验证）.

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