Added a way for organizations to prohibit providers (#1105)

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

@@ -754,10 +754,11 @@ public sealed class MediaTranscriptionService(
 
     /// <summary>Resolves the configured provider after confidence validation.</summary>
     /// <remarks>
-    /// Checks the global minimum confidence only. A caller with rules of its own, such as the
-    /// confidence level of a data source, checks the provider against them as well.
+    /// Checks the global minimum confidence and whether the organization prohibited the provider. A
+    /// caller with rules of its own, such as the confidence level of a data source, checks the
+    /// provider against them as well.
     /// </remarks>
-    /// <returns>The configured provider, or null when none is configured or it falls short of the global minimum.</returns>
+    /// <returns>The configured provider, or null when none is configured, it falls short of the global minimum, or it is prohibited.</returns>
     public TranscriptionProvider? GetUsableProvider()
     {
         var providerId = settingsManager.ConfigurationData.App.UseTranscriptionProvider;
@@ -769,7 +770,7 @@ public sealed class MediaTranscriptionService(
             return null;
 
         var minimumLevel = settingsManager.GetMinimumConfidenceLevel(Components.NONE);
-        return providerSettings.UsedLLMProvider.GetConfidence(settingsManager).Level >= minimumLevel
+        return settingsManager.IsProviderUsable(providerSettings.UsedLLMProvider, minimumLevel)
             ? providerSettings
             : null;
     }