The critical disk prune path was doing `docker network prune -f`
without a filter, which removes ALL unused networks. This races with
Gitea Actions jobs that are mid-startup: the runner creates a network,
then the healthcheck prunes it before the container attaches, causing
"network not found" errors.
Use `--filter "until=1h"` (same as the warn path) to only remove
networks older than 1 hour.
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
