Have you thought of processing thumbnails from Photohkit instead of making thumbnails from the original image size without actually resizing the original image source data? https://developer.apple.com/documentation/photokit/loading_and_caching_assets_and_thumbnails

Not possible. Everything goes to sleep after a certain time unless it is an Apple system service which runs on a different set of rules, GPS region monitoring related, VOIP related, background audio etc.

Probably take a look in the derived folder of the latest build against a real device or just archive and export to disk.

Tags must be unique, the first index of each item's separated component will produce a warning/error at runtime if it's not unique: Text($0).tag($0.components(separatedBy: " ")[0])

Seek and you will find.

Are there any performSeque implementations in MainViewController?

This is not the place for the such questions: please go here: https://discussions.apple.com/welcome

Sounds like you're passing .infinity to a width and height parameter of a frame. it might be best to use a GeometryReady to get a width & height as the minWidth & minHeight and use .infinity as the maxWidth & maxHeight or just use an absolute w x h.

Yes, once you include them. Wrap the c++ methods into objective-c calls. then annotate the objective-c calls for use in swift.

Value types in swift cannot be subclassed because they are not objects nor are they class types. You can try extending with the use of extensions but the internal behaviours of the components are private APIs except for what is already available as public APIs.

Notes The command below also works with 13.x.x https://developer.apple.com/documentation/xcode-release-notes/xcode-13_3-release-notes Xcode SwiftUI Previews may occasionally fail with an error message about a modified .hfile, such as “file Header.h has been modified since the module file Module.pcm was built: mtime changed.” (85938686) Workaround: Delete the Clang module cache by running the following command in Terminal: rm -rf "$TMPDIR/../C/clang/ModuleCache". Then try to preview the file again.

You can begin by reading here. https://developer.apple.com/library/archive/documentation/UserExperience/Conceptual/LocationAwarenessPG/RegionMonitoring/RegionMonitoring.html#//apple_ref/doc/uid/TP40009497-CH9-SW1

Confirm the base language of the project used for localization. This should happen automatically based on your computer's or mobile device's default language, the project's default or base localization language without you having to force it.

That should be embedded in a NavigationView.