- Cap progress bars at 140px max-width for better readability
- Constrain shell layout to 1400px max-width, centered
- Fix metric columns (CPU, Memory, Disk) at 156px
- Give name/resource columns extra space via flex
- Remove Docker Disk column (data rarely available from API)
- Remove fixed percentage widths from backups table for auto-sizing
- Improve text contrast in progress bar labels