Beszel API returns pre-scaled values, not raw bytes as the types claimed:
- Storage (du/mu/mb): GB — remove /BYTES_TO_GB division
- Disk I/O (dr/dw): MB/s — multiply by 1024² for formatters
- Container memory (m): MB — multiply by 1024² for formatters
- Container network (b/ns/nr): bytes/s — passthrough, unchanged
Also fix Recharts width(-1)/height(-1) warnings by adding w=100%
and minHeight:0 to BeszelAreaChart.