v4.2.1

• Wrapped initial NVAPI queries (GetDitherControl, IsColorSpaceConversionActive) in try/catch with safe defaults, and made the clamp error handler tolerate failed state refreshes so startup doesn’t crash.
• Added NvapiNotSupported = -104 and a V2 SetColorSpaceConversionV2 fallback that supplies identity LUTs when V1 SetColorSpaceConversion returns not supported, allowing clamp to work with updated drivers.