Enhance batch archive extraction and improve navigation UX - #385

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/upload-artifact@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Nullability of reference types in type of parameter 'g' of 'lambda expression' doesn't match the target delegate 'Func<Gallery?, double>' (possibly because of nullability attributes).

The type 'PicView.Core.Config.Gallery?' cannot be used as type parameter 'TSource' in the generic type or method 'Observable.EveryValueChanged<TSource, TProperty>(TSource, Func<TSource, TProperty>, CancellationToken)'. Nullability of type argument 'PicView.Core.Config.Gallery?' doesn't match 'class' constraint.

Nullability of reference types in type of parameter 'g' of 'lambda expression' doesn't match the target delegate 'Func<Gallery?, bool>' (possibly because of nullability attributes).

The type 'PicView.Core.Config.Gallery?' cannot be used as type parameter 'TSource' in the generic type or method 'Observable.EveryValueChanged<TSource, TProperty>(TSource, Func<TSource, TProperty>, CancellationToken)'. Nullability of type argument 'PicView.Core.Config.Gallery?' doesn't match 'class' constraint.

Non-nullable property 'WindowConfig' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Possible null reference assignment.

Possible null reference assignment.

Possible null reference assignment.

Nullability of reference types in type of parameter 'gallery' of 'lambda expression' doesn't match the target delegate 'Func<Gallery?, bool>' (possibly because of nullability attributes).

The type 'PicView.Core.Config.Gallery?' cannot be used as type parameter 'TSource' in the generic type or method 'Observable.EveryValueChanged<TSource, TProperty>(TSource, Func<TSource, TProperty>, CancellationToken)'. Nullability of type argument 'PicView.Core.Config.Gallery?' doesn't match 'class' constraint.

The type 'PicView.Core.Config.Gallery?' cannot be used as type parameter 'TSource' in the generic type or method 'Observable.EveryValueChanged<TSource, TProperty>(TSource, Func<TSource, TProperty>, CancellationToken)'. Nullability of type argument 'PicView.Core.Config.Gallery?' doesn't match 'class' constraint.

Nullability of reference types in type of parameter 'g' of 'lambda expression' doesn't match the target delegate 'Func<Gallery?, bool>' (possibly because of nullability attributes).

The type 'PicView.Core.Config.Gallery?' cannot be used as type parameter 'TSource' in the generic type or method 'Observable.EveryValueChanged<TSource, TProperty>(TSource, Func<TSource, TProperty>, CancellationToken)'. Nullability of type argument 'PicView.Core.Config.Gallery?' doesn't match 'class' constraint.

Non-nullable property 'WindowConfig' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Possible null reference assignment.

Possible null reference assignment.

Possible null reference assignment.

Possible null reference assignment.

Nullability of reference types in type of parameter 'gallery' of 'lambda expression' doesn't match the target delegate 'Func<Gallery?, bool>' (possibly because of nullability attributes).