feat: Add thinking parameters to Analysis mode and update models list in README

handoff: harden config and align MVP surface

docs: reorganize markdown files into docs/; add docs index

docs: clarify scope (generation-first) and index snapshot freshness

feat: enhance text cleaning utility to remove HTML tags and entities, update documentation, and requirements.

feat: Інтеграція GPT-5.2 з підтримкою reasoning

Clean deployment without large index files