* docs: align Chinese README with English version, optimize translations
- Restructure Chinese README to match English section order
- Add demo image, CI badge, Core Concepts section, AgentPool.runParallel
- Optimize 20+ translations for natural Chinese tech writing
- Tone adjustment: reduce colloquial language, unify terminology
- Remove feature-dump tagline and Grok/Groq disclaimer from both versions
- Clean up English README: fix awkward phrasing, missing article, extra blank line
- Add docs/observability.md and docs/providers.md
* Update README hero animation
* docs: use package-safe README hero URL