UI: Complete rebrand to Smriti by Kaal the Absolute

Rebrand to Kaal — rename from Chronos OS, add Logo component with serif seal design, swap all Hexagon icons for Logo

FIX: Remove catch-all rewrite that routed landing page to Python API, remove dead @fontsource deps

Optimize font loading for SEO performance

Feat: Vercel-style landing page redesign and Next.js routing

Migrate to Vercel Next.js UI Frontend, prune 10x SVO model overhead payload