Merge pull request #585 from yymydyy/master

Fixed zh_CN translations

Tests

f

Updated language editing

- Editable language files download from master only when missing
- Local translations remain intact with English fallback
- Language preferences live under languages
- The four-row language editor displays skill and adaptation icons
- Editor saves coordinate with automatic hot reload
- Diagnostic reports use /adapt debug dump

V+

V+

V+

f

v+

v+