- Add /api/projects/across-nodes to merge local projects with online remote node project lists
- Expose fetchProjectsAcrossNodes and ProjectInfoWithSource, and switch useProjects to consume cross-node data
- Update ProjectOverview and ProjectCard with node badges, node count stats, and a node filter dropdown plus responsive styles
- Add server and dashboard test coverage for cross-node aggregation, filtering, and hook behavior changes
- Include a changeset for @gsxdsm/fusion minor release and preserve stale-channel SSE reconnect guards during merge
- Add project API routes for multi-project backend integration
- Create useProjects hook for listing and managing registered projects
- Create useCurrentProject hook for current project selection and switching
- Create useProjectHealth hook for real-time project health metrics
- Create useActivityLog hook with ActivityLogModal integration
- Add comprehensive test coverage for all hooks (useProjects, useCurrentProject, useActivityLog)
- Add test setup utilities for React Query mocking
