feat: add comprehensive language comparison table and hub structure

- Create LANGUAGES.scm with detailed specifications for 8 languages:
  Solo, Duet, Ensemble, Phronesis, Eclexia, Oblíbený, Anvomidav, WokeLang
- Update README.adoc as central hub with comparison table
- Define satellite repository structure with betlang as active
- Add design spectrum visualization (abstraction, verification, AI, audience)
- Update STATE.scm to v0.2.0 with new session history

Source: chat c_ffe1252d0dd5dd30

Author: claude