- Add 4 separate I/O columns (D Read, D Write, N In, N Out) to guest table
- Tighten column widths: fixed-width I/O columns, flexible progress bar columns
- Remove sticky columns from NodeSummaryTable (not needed)
- Shorten "Containers" to "CTs" in node summary for consistency
- Always show full VM/LXC labels (no mobile abbreviation)
- Increase name column minWidth to 100px for mobile readability
- Add formatSpeed utility function for I/O display
- Add responsive infrastructure: useBreakpoint hook, useGridTemplate hook
- Implemented adaptive layout for NodeSummaryTable with responsive columns and sticky name column.
- Fixed GuestRow background display issues.
- Added IsLegacy field to Host and DockerHost models to flag legacy agents (version < 1.0.0).
- Updated monitor to populate IsLegacy based on agent version.
