glia v0.2.1

Tests and docs release (no API changes to the agent loop).

Docs

• New bilingual (EN/RU) documentation site built with MkDocs Material + i18n — home, getting started, guide, and architecture in English and Русский, auto-deployed to GitHub Pages: https://denisdrobyshev.github.io/glia/
• Added README.ru.md and a language switcher.

Tests

• Expanded to 110 offline tests, ~98% coverage, including full offline coverage of the Claude adapter via a fake client. CI now enforces a coverage floor.

Fix

• _stringify (tool-result rendering) JSON-encodes only containers and uses str() otherwise — a plain object is no longer wrapped in quotes.

Install/upgrade: pip install -U glia-agents