The arr services were committed (b9de886) with PUID=0 but no userns_mode.
Under rootless podman's default subuid mapping, container-root cannot write
host-root-owned bind mounts, so every app died in logger init
(UnauthorizedAccessException on /config/Sentry) before binding its port —
the stack 502'd since it was first brought up (2026-09-04 00:33).
Per the fleet convention (AGENTS.md, plex/tautulli migration): PUID=0 +
UserNS=host maps container-root to dank (1000), which owns /opt data roots
and /mnt/entropy. Config dirs chowned 1000:1000 at bring-up.
Also drops a duplicate 'networks: [appnet]' key on prowlarr.