The railiance-backup script targets a developer workstation (custodian DB
in Docker + Claude config). It is not applicable to the server.
Server backup (Gitea repos + Zulip data) belongs in railiance-infra as an
Ansible role. T05 now documents this correctly and blocks wiring up a cron
job until the right script exists.
Also removed the incorrectly installed cron job that called the broken script.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>