Replaces the stale "Dev VM SSH key" secret entry with the current
`claude-agent-service` bearer token path (synced to both consumer +
caller namespaces). Adds an "n8n workflow gotchas" section documenting:
1. The workflow is DB-state, not Terraform-managed — the JSON in the
repo is a backup, not authoritative.
2. Header-expression syntax: `=Bearer {{ $env.X }}` works, JS concat
`='Bearer ' + $env.X` does NOT — costs silent 401s.
3. `N8N_BLOCK_ENV_ACCESS_IN_NODE=false` requirement.
4. 401-troubleshooting steps and the UPDATE pattern for in-place
workflow patches.
Follow-up to 99180bec which fixed the actual pipeline break.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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