* migrated a lot of unit tests to Swift Testing and added a new implementation for deferred fulfillment
more tests migration
Cleaned the code manually to establish some good patterns
more code improvements
some more code improvements
removed empty tests
update project
* more pr suggestions and cleanups
* removed the TestSetup pattern
* fixing claude not reusing tests
* pr suggestion + added indent rule to swiftformat so that we can prevent AIs to change that
* Fix a bug where the link device flow wasn't dismissed when complete.
* Listen for cancellation of the WAS when linking a device (dismissing the QR screen when it happens).
* Add CustomStringConvertible conformances to QRCodeLoginScreen actions.
* Replace GrantLoginWithQrCodeHandlerSDKMock with LinkNewDeviceServiceMock.
Add tests for all initial states on the QRCodeLoginScreen.
* Add tests for linking both mobile and desktop devices.
* Add UI tests for linking a new device.
* Don't show the Link Desktop Computer button when running on macOS.
This mirrors the decision to hide the Sign In With QR Code button on the start screen.
* Adds the remaining parts for showing/scanning a QR code to link a new device.
* Refactor the QRCodeLoginService to work the same way as the LinkNewDeviceService.
* Tidy-up Rust to Swift mapping.
* Refactor out a dedicated QRCodeErrorView.
* Use the new QRCodeErrorView for most error state snapshots.
* Simplify QRCodeErrorView structure.
Also updates the background to match the designs.
* Fix a small compile error in the unit tests.
* Make account provider configuration more flexible.
- Change defaultHomeserverAddress to an array of providers (needs UI).
- Add allowOtherAccountProviders to prevent the user from manually entering a provider.
* Refactor QR code scan failures into a common type.
* Validate scanned QR codes against the allowed account providers.
* Hide the login flow on the QR code screen when restricted.
