Reorder the sidebar so Gateway sits right under Overview. Replace the
Scheduled and Program tables with card grids matching Services: add JobCard
and ProgramCard, convert ScheduledSection to a JobCard grid, and turn the
former ProgramTable into a filterable ProgramCard grid (renamed ProgramList;
kept the search box, dropped the sortable table). Remove the now-orphaned
SortHeader component.
Introduce a Layout shell with a collapsible left sidebar (state persisted
to localStorage) that becomes a hamburger drawer under md. Break the single
Dashboard into routed pages — Overview (summary tiles + node bar), Services,
Scheduled, Programs, Gateway, Mesh — nested under the shared Layout via an
Outlet. Centralize useEventStream in Layout (drop the per-page duplicates),
repoint detail-page back links at their section pages, and remove the now-dead
SectionHeader component / SECTION_HEADERS map (each page owns its header).
