Where can I find sample codes and some api listing for iOS only?

do we have settings for changing search provider through extension on latest iOS 15?

I am developing software that will need user accessing their phones from remote places. Is this possible through any remote access protocol implemented within ios?

I am deploying to testflight using xcodebuild command line tools. How to add release notes? I am using following command. xcodebuild -exportArchive -archivePath $PWD/build/app.xcarchive -exportOptionsPlist ./exportOptions.plist I need testers to be able to see notes under "What to test" section in testflight.