Build dea-web-viewer

[emmanuel-a-otchere]

Task\nReact + Vite web UI for browsing DEA catalogs and visualizing viewpoints.

Definition of Done

• Browse by entity type (Principle, Pattern, Standard, etc.)
• Viewpoint generator (CTO, Solutions Architect, Developer, etc.)
• Relationship graph visualization
• Connects to dea-metamodel SQLite runtime