Aurelius improvement pass: domain-aware recs, finance/research surfaces, 2D graph

Add optional Gemini AI layer (additive, fallback-first)

Make Finance a real relationship explorer; integrate news; add Biology

Add relationship lenses and kind-based coloring to the 3D explorer

Rebuild Aurelius as a multi-source graph intelligence engine

Rewrite About for first-time readers; fix mobile UI; glow the About button

Add cold-start loading hint and fix Vercel/Render deploy follow-ups

Initial commit