Replace flat app/route/agent lists with expandable tree navigation.
Apps contain their routes and agents hierarchically. Add localStorage-
backed starring with composite keys for uniqueness. Persist expand
state to sessionStorage across page navigations. Add collapsible
section headers, remove button on starred items, and parent app
context labels. Create stub pages for /apps/:id, /agents/:id,
/admin, /api-docs. Consolidate duplicated sidebar data into
shared mock. Widen sidebar from 220px to 260px.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Wires up all 5 routes in App.tsx (/, /metrics, /routes/:id,
/exchanges/:id, /agents). Fixes pre-existing build errors: vite.config.ts
now uses vitest/config defineConfig so the test property is typed
correctly; removes unused imports in Collapsible.tsx and _chart-utils.ts;
removes unused parameter in metrics.ts generateTimeSeries.
Build: tsc -b && vite build passes clean. Test suite: 72/72 pass.
Bundle: 334kB JS (101kB gzip) + 54kB CSS (10kB gzip).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
