refactor: centralise all magic numbers into config.py driven by env vars

feat: bi-temporal supersession, scope isolation, configurable threshold, benchmark adapter

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

Security: Enforce strict tenant data isolation across all API routes (query, connectors, agent)

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

Initial commit for Chronos OS MVP