qBittorrent 5.x does not bind WireGuard's tun0 unless told to, so tracker
and DHT packets left via eth0 and Gluetun dropped them (stalledDL). Bind
the session to tun0 on VPN installs. Build sidecar images on the host
instead of apk at start, move vpn-watchdog off Gluetun's netns, ignore
non-video inotify events, and stop start/upgrade from aborting or
re-prompting.
Stock Seerr only drops the request row; intercept DELETE /api/v1/request/:id
to cascade media file delete (*arr + purge hooks) before removing the request.
Generate INSTALL_DIR/.env from .env.example via envsubst, drop
templates/envsubst.env, and add a unit test that keeps the template
keys aligned with setup. Tighten related docs and test helpers.
