Queue stores direct urls of album artwork in object storage/s3
Unlike streamed media files wich are (can be?) proxied, URLs for album artwork are stored as direct object storage urls in the local queue of the user. As these urls have an expiry time (configured by env variable AWS_QUERYSTRING_EXPIRE in the documentation) they will after a while start to fail, as they are no longer authenticated.
I propose that Funkwhale instead proxy+cache the media, so that images in playlist will never fail.
The current behaviour is documented here: https://docs.funkwhale.audio/admin/external-storages.html