Orchestrator-installed backends (immich, btcpay-db, …) run as plain podman
`--restart=unless-stopped` containers until the Phase-3 Quadlet rollout flips
use_quadlet_backends on. Nothing in the codebase enabled the user's
podman-restart.service, so those containers had NO reboot-survival mechanism.
Enable it (idempotent, best-effort) at orchestrator startup so unless-stopped
containers come back after a reboot. Already applied manually on .228 (covers
31 containers incl. immich + btcpay); this codifies it fleet-wide.
The deeper fix (render Quadlet for all orchestrator installs) remains the gated
Phase-3 Quadlet-everywhere rollout.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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