Move XCM files to maps/ subfolder - Android Backup

[lordfolken]

XCSoar version

7.42 Android

What should XCSoar do differently, what functionality should be added?

Currently, XCSoar's XCM files are stored directly in the main data directory. However, this poses a problem for users relying on Google Backup on Android devices, as the backup system has a 25MB limitation. When the application's data volume exceeds this threshold, automatic backups cease to function.

To address this issue and ensure seamless backup functionality, we should move XCM files to a subfolder named "maps/" within the application's directory structure. This way a backup profile for android can be created https://developer.android.com/guide/topics/data/autobackup#EnablingAutoBackup that excludes the map folder and includes everything else.

This way we can ensure that any custom files the user may have created and also flight logs are backed up securely.

What are you trying to do, what is the use case for the suggestion?

Better android platform integration. Things just work more as expected.