Custodian Maintenance Runbook

Operates a client's self-hosted stack — booking engine (Cal.diy), automation (n8n), chat (Typebot), Postgres, web/TLS, Stripe webhook. **Purpose: availability

• recoverability + currency, at the lowest possible inference cost.**

When to Use This Skill

Use this skill when:

• A customer stack must be monitored, backed up, and updated automatically.
• You need a repeatable, guardrailed maintenance loop (health → backup → update → rollback) that never breaks a live booking flow.
• Cost matters: the loop should run decisions on a cheap model and only summon a generation model for genuine language work.