Improved transcription error handling (#773)

app/MindWork AI Studio/Assistants/I18N/allTexts.lua

@@ -3127,6 +3127,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::VOICERECORDER::T2372624045"] = "Start rec
 -- Transcription in progress...
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::VOICERECORDER::T2851219233"] = "Transcription in progress..."
 
+-- Unfortunately, there was an error communicating with the AI system.
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::VOICERECORDER::T3236134591"] = "Unfortunately, there was an error communicating with the AI system."
+
 -- The configured transcription provider was not found.
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::VOICERECORDER::T331613105"] = "The configured transcription provider was not found."
 

app/MindWork AI Studio/Components/VoiceRecorder.razor.cs

@@ -361,7 +361,15 @@ public partial class VoiceRecorder : MSGComponentBase
 
             // Call the transcription API:
             this.Logger.LogInformation("Starting transcription with provider '{ProviderName}' and model '{ModelName}'.", transcriptionProviderSettings.UsedLLMProvider, transcriptionProviderSettings.Model.ToString());
-            var transcribedText = await provider.TranscribeAudioAsync(transcriptionProviderSettings.Model, this.finalRecordingPath, this.SettingsManager);
+            var transcriptionResult = await provider.TranscribeAudioAsync(transcriptionProviderSettings.Model, this.finalRecordingPath, this.SettingsManager);
+            if (!transcriptionResult.Success)
+            {
+                this.Logger.LogWarning("The transcription request failed.");
+                await this.MessageBus.SendError(new(Icons.Material.Filled.VoiceChat, this.T("Unfortunately, there was an error communicating with the AI system.")));
+                return;
+            }
+
+            var transcribedText = transcriptionResult.Text;
 
             if (string.IsNullOrWhiteSpace(transcribedText))
             {

app/MindWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua

@@ -3129,6 +3129,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::VOICERECORDER::T2372624045"] = "Beginnen
 -- Transcription in progress...
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::VOICERECORDER::T2851219233"] = "Transkription läuft …"
 
+-- Unfortunately, there was an error communicating with the AI system.
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::VOICERECORDER::T3236134591"] = "Leider ist bei der Kommunikation mit dem KI-System ein Fehler aufgetreten."
+
 -- The configured transcription provider was not found.
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::VOICERECORDER::T331613105"] = "Der konfigurierte Anbieter für die Transkription wurde nicht gefunden."
 
@@ -4797,9 +4800,6 @@ UI_TEXT_CONTENT["AISTUDIO::DIALOGS::SETTINGS::SETTINGSDIALOGCHATTEMPLATE::T38241
 -- Actions
 UI_TEXT_CONTENT["AISTUDIO::DIALOGS::SETTINGS::SETTINGSDIALOGCHATTEMPLATE::T3865031940"] = "Aktionen"
 
--- Export
-UI_TEXT_CONTENT["AISTUDIO::DIALOGS::SETTINGS::SETTINGSDIALOGCHATTEMPLATE::T3898821075"] = "Exportieren"
-
 -- Delete Chat Template
 UI_TEXT_CONTENT["AISTUDIO::DIALOGS::SETTINGS::SETTINGSDIALOGCHATTEMPLATE::T4025180906"] = "Chat-Vorlage löschen"
 
@@ -7746,9 +7746,6 @@ UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T13982828
 -- File has no extension
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T1555980031"] = "Datei hat keine Erweiterung"
 
--- This file format is not supported.
-UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T2634293666"] = "Dieses Dateiformat wird nicht unterstützt. Bitte konvertieren Sie die .doc-Datei in .docx (z. B. mit Microsoft Word)."
-
 -- Audio files are not supported yet
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T2919730669"] = "Audio-Dateien werden noch nicht unterstützt."
 
@@ -7761,6 +7758,9 @@ UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T29806295
 -- Images are not supported at this place
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T305247150"] = "Bilder werden an dieser Stelle nicht unterstützt."
 
+-- This file format is not supported. Please convert the .doc file to .docx (e.g. with Microsoft Word).
+UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T3740637731"] = "Dieses Dateiformat wird nicht unterstützt. Bitte konvertieren Sie die .doc-Datei in eine .docx-Datei (z. B. mit Microsoft Word)."
+
 -- Unsupported file type
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T4041351522"] = "Nicht unterstützter Dateityp"
 

app/MindWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua

@@ -3129,6 +3129,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::VOICERECORDER::T2372624045"] = "Start rec
 -- Transcription in progress...
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::VOICERECORDER::T2851219233"] = "Transcription in progress..."
 
+-- Unfortunately, there was an error communicating with the AI system.
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::VOICERECORDER::T3236134591"] = "Unfortunately, there was an error communicating with the AI system."
+
 -- The configured transcription provider was not found.
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::VOICERECORDER::T331613105"] = "The configured transcription provider was not found."
 
@@ -4797,9 +4800,6 @@ UI_TEXT_CONTENT["AISTUDIO::DIALOGS::SETTINGS::SETTINGSDIALOGCHATTEMPLATE::T38241
 -- Actions
 UI_TEXT_CONTENT["AISTUDIO::DIALOGS::SETTINGS::SETTINGSDIALOGCHATTEMPLATE::T3865031940"] = "Actions"
 
--- Export
-UI_TEXT_CONTENT["AISTUDIO::DIALOGS::SETTINGS::SETTINGSDIALOGCHATTEMPLATE::T3898821075"] = "Export"
-
 -- Delete Chat Template
 UI_TEXT_CONTENT["AISTUDIO::DIALOGS::SETTINGS::SETTINGSDIALOGCHATTEMPLATE::T4025180906"] = "Delete Chat Template"
 
@@ -7758,8 +7758,8 @@ UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T29806295
 -- Images are not supported at this place
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T305247150"] = "Images are not supported at this place"
 
--- This file format is not supported.
+-- This file format is not supported. Please convert the .doc file to .docx (e.g. with Microsoft Word).
-UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T1506058512"] = "This file format is not supported. Please convert the .doc file to .docx (e.g. with Microsoft Word)."
+UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T3740637731"] = "This file format is not supported. Please convert the .doc file to .docx (e.g. with Microsoft Word)."
 
 -- Unsupported file type
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T4041351522"] = "Unsupported file type"

app/MindWork AI Studio/Provider/AlibabaCloud/ProviderAlibabaCloud.cs

@@ -60,9 +60,9 @@ public sealed class ProviderAlibabaCloud() : BaseProvider(LLMProviders.ALIBABA_C
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
-        return Task.FromResult(string.Empty);
+        return Task.FromResult(TranscriptionResult.Failure());
     }
     
     /// <inhertidoc />

app/MindWork AI Studio/Provider/Anthropic/ProviderAnthropic.cs

@@ -116,9 +116,9 @@ public sealed class ProviderAnthropic() : BaseProvider(LLMProviders.ANTHROPIC, "
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
-        return Task.FromResult(string.Empty);
+        return Task.FromResult(TranscriptionResult.Failure());
     }
     
     /// <inhertidoc />

app/MindWork AI Studio/Provider/BaseProvider.cs

@@ -100,7 +100,7 @@ public abstract class BaseProvider : IProvider, ISecretId
     public abstract IAsyncEnumerable<ImageURL> StreamImageCompletion(Model imageModel, string promptPositive, string promptNegative = FilterOperator.String.Empty, ImageURL referenceImageURL = default, CancellationToken token = default);
     
     /// <inheritdoc />
-    public abstract Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default);
+    public abstract Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default);
     
     /// <inheritdoc />
     public abstract Task<IReadOnlyList<IReadOnlyList<float>>> EmbedTextAsync(Model embeddingModel, SettingsManager settingsManager, CancellationToken token = default, params List<string> texts);
@@ -804,7 +804,7 @@ public abstract class BaseProvider : IProvider, ISecretId
             yield return content;
     }
 
-    protected async Task<string> PerformStandardTranscriptionRequest(RequestedSecret requestedSecret, Model transcriptionModel, string audioFilePath, Host host = Host.NONE, CancellationToken token = default)
+    protected async Task<TranscriptionResult> PerformStandardTranscriptionRequest(RequestedSecret requestedSecret, Model transcriptionModel, string audioFilePath, Host host = Host.NONE, CancellationToken token = default)
     {
         try
         {
@@ -846,7 +846,7 @@ public abstract class BaseProvider : IProvider, ISecretId
                     if(!requestedSecret.Success)
                     {
                         this.logger.LogError("No valid API key available for transcription request.");
-                        return string.Empty;
+                        return TranscriptionResult.Failure();
                     }
                     
                     request.Headers.Add("Authorization", await requestedSecret.Secret.Decrypt(ENCRYPTION));
@@ -856,7 +856,7 @@ public abstract class BaseProvider : IProvider, ISecretId
                     if(!requestedSecret.Success)
                     {
                         this.logger.LogError("No valid API key available for transcription request.");
-                        return string.Empty;
+                        return TranscriptionResult.Failure();
                     }
                     
                     request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", await requestedSecret.Secret.Decrypt(ENCRYPTION));
@@ -864,22 +864,22 @@ public abstract class BaseProvider : IProvider, ISecretId
             }
             
             using var response = await this.HttpClient.SendAsync(request, token);
-            var responseBody = response.Content.ReadAsStringAsync(token).Result;
+            var responseBody = await response.Content.ReadAsStringAsync(token);
         
             if (!response.IsSuccessStatusCode)
             {
                 this.logger.LogError("Transcription request failed with status code {ResponseStatusCode} and body: '{ResponseBody}'.", response.StatusCode, responseBody);
-                return string.Empty;
+                return TranscriptionResult.Failure();
             }
 
             var transcriptionResponse = JsonSerializer.Deserialize<TranscriptionResponse>(responseBody, JSON_SERIALIZER_OPTIONS);
             if(transcriptionResponse is null)
             {
                 this.logger.LogError("Was not able to deserialize the transcription response.");
-                return string.Empty;
+                return TranscriptionResult.Failure();
             }
 
-            return transcriptionResponse.Text;
+            return TranscriptionResult.FromText(transcriptionResponse.Text);
         }
         catch (Exception e)
         {
@@ -887,7 +887,7 @@ public abstract class BaseProvider : IProvider, ISecretId
                 await this.SendTimeoutError("transcribing audio");
 
             this.logger.LogError("Failed to perform transcription request: '{Message}'.", e.Message);
-            return string.Empty;
+            return TranscriptionResult.Failure();
         }
     }
     

app/MindWork AI Studio/Provider/DeepSeek/ProviderDeepSeek.cs

@@ -60,9 +60,9 @@ public sealed class ProviderDeepSeek() : BaseProvider(LLMProviders.DEEP_SEEK, "h
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
-        return Task.FromResult(string.Empty);
+        return Task.FromResult(TranscriptionResult.Failure());
     }
     
     /// <inhertidoc />

app/MindWork AI Studio/Provider/Fireworks/ProviderFireworks.cs

@@ -61,7 +61,7 @@ public class ProviderFireworks() : BaseProvider(LLMProviders.FIREWORKS, "https:/
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override async Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override async Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
         var requestedSecret = await RUST_SERVICE.GetAPIKey(this, SecretStoreType.TRANSCRIPTION_PROVIDER);
         return await this.PerformStandardTranscriptionRequest(requestedSecret, transcriptionModel, audioFilePath, token: token);

app/MindWork AI Studio/Provider/GWDG/ProviderGWDG.cs

@@ -60,7 +60,7 @@ public sealed class ProviderGWDG() : BaseProvider(LLMProviders.GWDG, "https://ch
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override async Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override async Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
         var requestedSecret = await RUST_SERVICE.GetAPIKey(this, SecretStoreType.TRANSCRIPTION_PROVIDER);
         return await this.PerformStandardTranscriptionRequest(requestedSecret, transcriptionModel, audioFilePath, token: token);

app/MindWork AI Studio/Provider/Google/ProviderGoogle.cs

@@ -63,9 +63,9 @@ public class ProviderGoogle() : BaseProvider(LLMProviders.GOOGLE, "https://gener
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
 
     /// <inheritdoc />
-    public override Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
-        return Task.FromResult(string.Empty);
+        return Task.FromResult(TranscriptionResult.Failure());
     }
     
     /// <inhertidoc />

app/MindWork AI Studio/Provider/Groq/ProviderGroq.cs

@@ -64,9 +64,9 @@ public class ProviderGroq() : BaseProvider(LLMProviders.GROQ, "https://api.groq.
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
-        return Task.FromResult(string.Empty);
+        return Task.FromResult(TranscriptionResult.Failure());
     }
     
     /// <inhertidoc />

app/MindWork AI Studio/Provider/Helmholtz/ProviderHelmholtz.cs

@@ -62,9 +62,9 @@ public sealed class ProviderHelmholtz() : BaseProvider(LLMProviders.HELMHOLTZ, "
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
-        return Task.FromResult(string.Empty);
+        return Task.FromResult(TranscriptionResult.Failure());
     }
     
     /// <inhertidoc />

app/MindWork AI Studio/Provider/HuggingFace/ProviderHuggingFace.cs

@@ -65,9 +65,9 @@ public sealed class ProviderHuggingFace : BaseProvider
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
-        return Task.FromResult(string.Empty);
+        return Task.FromResult(TranscriptionResult.Failure());
     }
     
     /// <inhertidoc />

app/MindWork AI Studio/Provider/IProvider.cs

@@ -64,7 +64,7 @@ public interface IProvider
     /// <param name="settingsManager">The settings manager instance to use.</param>
     /// <param name="token">The cancellation token.</param>
     /// <returns>>The transcription result.</returns>
-    public Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default);
+    public Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default);
         
     /// <summary>
     /// Embed a text file.

app/MindWork AI Studio/Provider/Mistral/ProviderMistral.cs

@@ -67,7 +67,7 @@ public sealed class ProviderMistral() : BaseProvider(LLMProviders.MISTRAL, "http
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override async Task<string> TranscribeAudioAsync(Provider.Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override async Task<TranscriptionResult> TranscribeAudioAsync(Provider.Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
         var requestedSecret = await RUST_SERVICE.GetAPIKey(this, SecretStoreType.TRANSCRIPTION_PROVIDER);
         return await this.PerformStandardTranscriptionRequest(requestedSecret, transcriptionModel, audioFilePath, token: token);

app/MindWork AI Studio/Provider/NoProvider.cs

@@ -41,7 +41,7 @@ public class NoProvider : IProvider
         yield break;
     }
 
-    public Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default) => Task.FromResult(string.Empty);
+    public Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default) => Task.FromResult(TranscriptionResult.Failure());
     
     public Task<IReadOnlyList<IReadOnlyList<float>>> EmbedTextAsync(Model embeddingModel, SettingsManager settingsManager, CancellationToken token = default, params List<string> texts) => Task.FromResult<IReadOnlyList<IReadOnlyList<float>>>([]);
 

app/MindWork AI Studio/Provider/OpenAI/ProviderOpenAI.cs

@@ -222,7 +222,7 @@ public sealed class ProviderOpenAI() : BaseProvider(LLMProviders.OPEN_AI, "https
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override async Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override async Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
         var requestedSecret = await RUST_SERVICE.GetAPIKey(this, SecretStoreType.TRANSCRIPTION_PROVIDER);
         return await this.PerformStandardTranscriptionRequest(requestedSecret, transcriptionModel, audioFilePath, token: token);

app/MindWork AI Studio/Provider/OpenRouter/ProviderOpenRouter.cs

@@ -71,9 +71,9 @@ public sealed class ProviderOpenRouter() : BaseProvider(LLMProviders.OPEN_ROUTER
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
-        return Task.FromResult(string.Empty);
+        return Task.FromResult(TranscriptionResult.Failure());
     }
     
     /// <inhertidoc />

app/MindWork AI Studio/Provider/Perplexity/ProviderPerplexity.cs

@@ -68,9 +68,9 @@ public sealed class ProviderPerplexity() : BaseProvider(LLMProviders.PERPLEXITY,
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
-        return Task.FromResult(string.Empty);
+        return Task.FromResult(TranscriptionResult.Failure());
     }
     
     /// <inhertidoc />

app/MindWork AI Studio/Provider/SelfHosted/ProviderSelfHosted.cs

@@ -73,7 +73,7 @@ public sealed class ProviderSelfHosted(Host host, string hostname) : BaseProvide
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override async Task<string> TranscribeAudioAsync(Provider.Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override async Task<TranscriptionResult> TranscribeAudioAsync(Provider.Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
         var requestedSecret = await RUST_SERVICE.GetAPIKey(this, SecretStoreType.TRANSCRIPTION_PROVIDER, isTrying: true);
         return await this.PerformStandardTranscriptionRequest(requestedSecret, transcriptionModel, audioFilePath, host, token);

app/MindWork AI Studio/Provider/TranscriptionResult.cs

@@ -0,0 +1,8 @@
+namespace AIStudio.Provider;
+
+public sealed record TranscriptionResult(bool Success, string Text)
+{
+    public static TranscriptionResult FromText(string text) => new(true, text);
+
+    public static TranscriptionResult Failure() => new(false, string.Empty);
+}

app/MindWork AI Studio/Provider/X/ProviderX.cs

@@ -61,9 +61,9 @@ public sealed class ProviderX() : BaseProvider(LLMProviders.X, "https://api.x.ai
     #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
     
     /// <inheritdoc />
-    public override Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
+    public override Task<TranscriptionResult> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default)
     {
-        return Task.FromResult(string.Empty);
+        return Task.FromResult(TranscriptionResult.Failure());
     }
     
     /// <inhertidoc />

app/MindWork AI Studio/wwwroot/changelog/v26.5.5.md

@@ -12,6 +12,7 @@
 - Fixed an issue where the spellchecking setting was not applied to all text fields in the slide builder assistant.
 - Fixed an issue where legacy `.doc` files could be selected even though AI Studio could not process them. These files are now rejected with a clear error message. Thanks to Bernhard for reporting this issue.
 - Fixed an issue where attached documents were detached when editing a previous prompt. They now remain attached.
+- Fixed an issue where failed transcription requests could be shown as empty transcription results instead of a clear error message.
 - Fixed missing translations for file type names in file selection dialogs.
 - Upgraded the native secret storage integration to `keyring-core`, keeping API keys in the secure credential store provided by the operating system.
 - Upgraded Rust to v1.95.0.