The 'internal.admins' field expects user IDs, not emails. Setting it
to an empty array explicitly disables admin access. Without the field,
museum falls back to treating the first registered user as admin,
which is the correct behavior for self-hosted instances.
- Add 'internal: admins: []' section to museum.yaml so admin CLI
commands work after adding email to the list
- Fix --no-limit flag in helper script (requires 'True' argument)
- Add admin setup step to JSON first-start notes
Without these steps the setup cannot be completed:
1. Create account via web UI
2. Get verification code from museum logs
3. Remove subscription limit via CLI
