XiaoNuoClean

### Highlights

- Added `/xiaonuoclean clean on` and `/xiaonuoclean clean off`, also available through `/xnc`.
- Disabling automatic cleanup pauses the countdown, warnings, and scheduled cleanup; manual `/clean` remains available.
- Added server-side i18n with bundled `zh-CN` and `en-US` language files and support for custom JSON translations.
- `/xiaonuoclean status` now displays whether automatic cleanup is enabled.
- Improved Fabric/NeoForge jar validation and removed the unused Fabric client entrypoint.

### Configuration

- Main config: `config/xiaonuoclean/config.json`
- Language files: `config/xiaonuoclean/lang/<language>.json`
- Added `"enabled": true`; a missing value defaults to enabled.
- When upgrading from v1.1.0, manually move `config/xiaonuoclean.json` to `config/xiaonuoclean/config.json` before starting v1.1.1. There is no automatic migration.

### Compatibility

- Minecraft `26.1.2` to `26.2.x`
- Java `25+`
- Fabric Loader `0.19.3+` with Fabric API `0.154.2+26.1.2`
- NeoForge `26.1.2.76+`

Choose exactly one loader-specific jar for your server.