backup-bot-two's .env.sample ends with a newline-less comment, so set_env's bare
append concatenated RESTIC_REPOSITORY onto it (commenting it out). The backupbot
container then lacked RESTIC_REPOSITORY and 'abra app backup create' KeyError'd —
breaking the backup stage for recipes without a custom backup hook (cryptpad).
set_env now ensures a trailing newline before appending (applied to drone.nix too,
same latent bug). Re-verify keycloak backup, which earlier passed off an older deploy.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>