Drop the /network route, page, and sidebar entry. Network will instead
become a tab alongside Overview on the Infrastructure page later, so add
a disabled placeholder tab for now.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BbJV5nm8KPVH1oNJYKpnoF
Moves the hero rendering to the layout level so the banner shows the
full golden arch and sky behind the page title, search bar, and
sub-tabs row. TopBar and the search input backgrounds are now
transparent so the banner reads through cleanly.
Wires up react-router-dom so the sidebar nav actually navigates between
pages, with route-aware active highlighting and dynamic page titles.
Extracts Glance content into its own page component and adds a new
Infrastructure page matching the mockup: status cards, resource
distribution/cost breakdown donuts, infra map, top resources by
utilization, resource trend chart, recent activity, and footer stats.
