Wire analysis/[cad]/page.tsx: replace SidebarPlaceholder with
AnalysisSidebar (sticky, IntersectionObserver scrollspy on sections
1/2/3/3.1/3.2/3.3/4/5), header with AnalysisBreadcrumb (SiteFinder
→ cad → Анализ) and UserAvatar (gd_org_id from localStorage, SSR-safe).
Add lucide-react to package.json (was used in A1 but missing from deps).
