columns: ['id', 'customer_id', 'received_at', 'report_json', 'health_status', 'cpu_percent', 'memory_percent', 'container_total', 'container_running', 'backup_last_snapshot', 'controller_version', 'controller_url']
demo-hp 2026-09-17 12:54:43 controller 0.247.0 report timestamp 2026-09-17T12:54:42.272345455Z language='en'
demo-hp 2026-09-17 12:52:44 controller 0.247.0 report timestamp 2026-09-17T12:52:43.850613952Z language='hu'
demo-hp 2026-09-17 12:52:34 controller 0.246.0 report timestamp 2026-09-17T12:52:33.180041872Z NO language field
demo-felhom 2026-09-17 12:53:31 controller 0.246.0 report timestamp 2026-09-17T12:53:30.84214286Z NO language field
demo-felhom 2026-09-17 12:38:31 controller 0.246.0 report timestamp 2026-09-17T12:38:30.840427357Z NO language field
demo-felhom 2026-09-17 12:23:31 controller 0.246.0 report timestamp 2026-09-17T12:23:30.839751239Z NO language field
--- after switching back (12:55:19Z)
demo-hp 2026-09-17 12:55:22 controller 0.247.0 language='hu'
demo-hp 2026-09-17 12:54:43 controller 0.247.0 language='en'
