Improve synchronization: cancellation & progress management

[paul-fresquet]

This pull request introduces support for cancellation in the synchronization process, refactors synchronization action handling to propagate cancellation tokens, and improves the reliability of waiting for synchronization data transmission. It also updates resource files for clearer abort messaging and makes minor improvements to debug data source creation.

Synchronization cancellation support

• Added a CancellationTokenSource property to SynchronizationProcessData, with logic to reset and request synchronization abort. This enables the synchronization process to be cancelled gracefully. [1] [2] [3]
• Refactored ISynchronizationActionHandler and its implementation to accept and propagate CancellationToken parameters, ensuring that all synchronization actions can be cancelled. [1] [2] [3] [4] [5]

Reliable synchronization data transmission waiting

• Enhanced ReactiveUtils.WaitUntilTrue to support cancellation and proper timeout handling, including overloads with CancellationToken.
• Updated synchronization progress and transfer handlers to use these new methods, ensuring they respect cancellation and timeouts when waiting for synchronization data transmission. [1] [2]

Resource and messaging improvements

• Added new resource entries for abort actions in both French and English resource files for clearer UI messaging. [1] [2]

Debug/test data source improvements

• Changed the debug data source creation logic to use a user profile-based test folder instead of the desktop, improving test isolation. [1] [2]

Minor code cleanup

• Removed unused using directives from several service and receiver files for clarity. [1] [2] [3] [4] [5] [6]

[sonarqubecloud]

Quality Gate passed

Issues
11 New issues
3 Accepted issues

Measures
0 Security Hotspots
93.9% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud