docs: clarify dual-deployment architecture (Vercel UI + Hugging Face API)

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

Update UI and README to reflect new GPT OSS 120B and Llama 3.1 architecture (removed GLM 4.7 references)

Fix pre-launch blocking issues and agent multi-turn reasoning_content error

Production: Point frontend API to live HF Space backend and update all docs with public API URL

Docs: Update architectural documentation to reflect PostgreSQL/pgvector and Next.js frontend

Fix: Correct LLM router and docs to properly attribute Llama to Groq and Qwen to Cerebras

UI: Re-add Llama 3.1 8B documentation to accurately represent the dual models

UI: Update model descriptions to Qwen 3 235B and Cerebras

Add Hugging Face Space YAML config to README

Initial commit for Chronos OS MVP