dea-web-viewer: Vite + React scaffold + routing

[emmanuel-a-otchere]

WBS: WP-V-001 | Web Viewer & Packaging

Phase: Code | Layer: L2 — Tooling | Priority: High

Objective

Scaffold the dea-web-viewer React application with routing.

Deliverables

• Vite + React + TypeScript scaffold
• React Router: /, /catalog/:type, /entity/:id, /viewpoint/:role, /search
• Dark theme matching org GitHub Pages aesthetic (teal accent)
• Tailwind CSS or CSS Modules
• GitHub Actions CI (build + Lighthouse CI)

Dependencies

Can begin scaffold immediately; full functionality needs Project 2 catalog data