- Add global settings schema/types fields for persisted dashboard session state (selected project and node)
- Refactor NodeContext and current-project hooks to read/write project and node selection via global settings instead of project-local state
- Update App wiring to use the new selection flow across dashboard startup and switching behavior
- Add and expand dashboard tests for NodeContext, useCurrentProject, and view-state persistence behavior
- Add core proxy API infrastructure (api-node.ts) with remote node communication
- Create NodeContext for centralized node state management
- Implement useNodeProxy hook for node operations (metrics, events, health)
- Implement useRemoteNodeData hook with 10-second polling for live metrics
- Implement useRemoteNodeEvents hook for real-time SSE event subscription
- Add NodeStatusIndicator component with animated status indicators
- Add comprehensive tests for all new hooks and components
- Update dashboard styles for node status visualization
