List() was not extracting the StartedAt field from podman's JSON
output, so LiveCheck always returned zero timestamps and the CLI
showed "-" for every container's uptime.
podman ps --format json includes StartedAt as a Unix timestamp
(int64). Parse it into ContainerInfo.Started so the existing
LiveCheck → CLI uptime display chain works.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Kyle Isom
cedba9bf83