v2.2.0

feat: add JSON schema documentation and improve parser error handling

- Add comprehensive JSON schema field descriptions with i18n support (en, zh, ru)
- Fix shell script parsing by adding graceful fallback to regex parser when tree-sitter fails
- Change MCP server default output format from markdown to JSON for better AI integration
- Improve parser error handling with automatic fallback mechanism
- Add detailed field explanations in $schema for better AI comprehension
- Bump version to 2.2.0

Breaking changes:
- MCP server now returns JSON format by default instead of markdown