ScreenSaver Enhancements v2.0.2

[ZH-CN] 屏幕保护增强 v2.0.2

新增与改进：

1. 设置值校验：保存前校验公开设置的类型与范围，拒绝无效数据，避免异常配置影响插件运行；
2. 设置数据规范化：启动时自动规范化已保存的设置和应用规则，并将无效值恢复为安全默认值；
3. 损坏配置恢复：检测到无法解析的设置文件时，将原文件保留为带 .corrupt 后缀的备份，便于排查与恢复。

[EN] ScreenSaver Enhancements v2.0.2

Added and improved:

1. Settings validation: validates public setting types and ranges before saving and rejects invalid data that could affect plugin operation.
2. Settings normalization: normalizes persisted settings and application rules during startup and restores invalid values to safe defaults.
3. Corrupt settings recovery: preserves an unreadable settings file with a .corrupt suffix for troubleshooting and recovery.