Stop the fly proxy from shutting the bot down (#95) The app declared an http service on port 8080 with autostop enabled, but a long polling bot never listens on a port. The proxy therefore cordoned and stopped the machine roughly five minutes after every start, and autostart could not bring it back because no traffic ever reaches the app. Drop the service section so the worker simply runs. Also raise kill_timeout to 30s, which the graceful shutdown now needs, record the 768MB the machine already runs with, and remove the obsolete experimental block left over from the 2022 nomad config. - #96