- Add StackedMemoryBar component to visualize Active/Balloon/Swap memory
- Integrate StackedMemoryBar into NodeSummaryTable, GuestRow, HostsOverview, and DockerUnifiedTable
- Add TemperatureGauge component for temperature visualization
- Standardize replication job status indicators with StatusDot
- Fix mock data generator to use realistic balloon memory values (0 by default, small % when active)
- Add StackedContainerBar for Docker container status visualization
- Add ZFSHealthMap component for storage pool health visualization