Added backups of all data, restorable on another computer (#1008)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Tools/Services/DataRestoreFollowUpService.cs

@@ -0,0 +1,45 @@
+using AIStudio.Settings;
+
+namespace AIStudio.Tools.Services;
+
+/// <summary>
+/// One-shot startup service which picks up what a restore or a backup left behind: it learns how the
+/// runtime applied a restore, removes what a backup or a preparation left halfway, and removes the data
+/// a restore replaced once the restored settings loaded.
+/// </summary>
+/// <remarks>
+/// The report of the runtime waits in DataRestoreService until the main layout shows it, once the
+/// plugins started: only then do the providers of the organization exist, and the open points name
+/// none of them.
+/// </remarks>
+public sealed class DataRestoreFollowUpService(ILogger<DataRestoreFollowUpService> logger, SettingsManager settingsManager, DataRestoreService dataRestoreService) : BackgroundService
+{
+    #region Overrides of BackgroundService
+
+    /// <summary>Waits for the folders and the settings, picks up what the last start left, and then exits.</summary>
+    /// <param name="stoppingToken">Host shutdown token.</param>
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        while ((string.IsNullOrWhiteSpace(SettingsManager.DataDirectory) || string.IsNullOrWhiteSpace(SettingsManager.ConfigDirectory)) && !stoppingToken.IsCancellationRequested)
+            await Task.Delay(TimeSpan.FromSeconds(1), stoppingToken);
+
+        await dataRestoreService.LoadStartupStateAsync(stoppingToken);
+
+        while (!settingsManager.HasCompletedInitialSettingsLoad && !stoppingToken.IsCancellationRequested)
+            await Task.Delay(TimeSpan.FromSeconds(1), stoppingToken);
+
+        //
+        // Settings which could not be loaded leave the replaced data in place: they hold the settings
+        // which worked before the restore.
+        //
+        if (settingsManager.SettingsWriteBlocked)
+        {
+            logger.LogWarning("The settings could not be loaded safely. The data which a restore replaced stay where they are.");
+            return;
+        }
+
+        dataRestoreService.RemoveReplacedData();
+    }
+
+    #endregion
+}