The dashboard resource bar (CPU cores, memory used/total, containers, Docker
version) is now rendered per host instead of once for the local host — each
host section (local + each agent) shows its own bar above its stacks table.
- agent_app.py: _system_info() now also returns mem_used (from meminfo
available), alongside the cpu_cores/mem_total added in 0.19.0.
- Frontend: extracted a ResourceBar component used by the local section and each
AgentDashboardSection; AgentSystem type gained mem_used.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>