Added an analyzer which keeps line breaks LF on every system (#1193)

app/MindWork AI Studio/Agents/AgentDataSourceSelection.cs

@@ -190,7 +190,7 @@ public sealed class AgentDataSourceSelection (ILogger<AgentDataSourceSelection>
         logger.LogInformation("Preparing the list of allowed data sources for the agent to choose from.");
         
         var sb = new StringBuilder();
-        sb.AppendLine("The following data sources are available for selection:");
+        sb.AppendLineLF("The following data sources are available for selection:");
         foreach (var ds in dataSources.AllowedDataSources)
         {
             var description = await descriptionService.GetDescriptionAsync(ds, token);
@@ -198,15 +198,15 @@ public sealed class AgentDataSourceSelection (ILogger<AgentDataSourceSelection>
             switch (ds)
             {
                 case DataSourceLocalDirectory localDirectory:
-                    sb.AppendLine($"- Id={ds.Id}, name='{localDirectory.Name}', type=local directory, path='{localDirectory.Path}'{descriptionPart}");
+                    sb.AppendLineLF($"- Id={ds.Id}, name='{localDirectory.Name}', type=local directory, path='{localDirectory.Path}'{descriptionPart}");
                     break;
 
                 case DataSourceLocalFile localFile:
-                    sb.AppendLine($"- Id={ds.Id}, name='{localFile.Name}', type=local file, path='{localFile.FilePath}'{descriptionPart}");
+                    sb.AppendLineLF($"- Id={ds.Id}, name='{localFile.Name}', type=local file, path='{localFile.FilePath}'{descriptionPart}");
                     break;
 
                 case IERIDataSource eriDataSource:
-                    sb.AppendLine($"- Id={ds.Id}, name='{eriDataSource.Name}', type=external data source{descriptionPart}");
+                    sb.AppendLineLF($"- Id={ds.Id}, name='{eriDataSource.Name}', type=external data source{descriptionPart}");
                     break;
             }
         }

app/MindWork AI Studio/Agents/AssistantAudit/AssistantAuditAgent.cs

@@ -101,7 +101,7 @@ public sealed class AssistantAuditAgent(ILogger<AssistantAuditAgent> logger, ILo
 
     protected override string SystemPrompt(string additionalData) => string.IsNullOrWhiteSpace(additionalData)
         ? this.JobDescription
-        : $"{this.JobDescription}{Environment.NewLine}{Environment.NewLine}{additionalData}";
+        : $"{this.JobDescription}\n\n{additionalData}";
 
     public override AIStudio.Settings.Provider ProviderSettings { get; set; } = AIStudio.Settings.Provider.NONE;
 
@@ -343,11 +343,11 @@ public sealed class AssistantAuditAgent(ILogger<AssistantAuditAgent> logger, ILo
             var definition = toolRegistry.GetDefinition(toolId);
             if (definition is null)
             {
-                builder.AppendLine($"- {toolId}: unknown to this installation");
+                builder.AppendLineLF($"- {toolId}: unknown to this installation");
                 continue;
             }
 
-            builder.AppendLine($"- {toolId}: {definition.Function.DescriptionForLLM}");
+            builder.AppendLineLF($"- {toolId}: {definition.Function.DescriptionForLLM}");
         }
 
         return builder.ToString().TrimEnd();
@@ -368,11 +368,11 @@ public sealed class AssistantAuditAgent(ILogger<AssistantAuditAgent> logger, ILo
         foreach (var luaFile in luaFiles.OrderBy(file => file.Key, StringComparer.Ordinal))
         {
             if (builder.Length > 0)
-                builder.AppendLine().AppendLine();
+                builder.AppendLineLF().AppendLineLF();
 
             builder.Append("-- File: ");
-            builder.AppendLine(luaFile.Key);
-            builder.AppendLine(luaFile.Value);
+            builder.AppendLineLF(luaFile.Key);
+            builder.AppendLineLF(luaFile.Value);
         }
 
         return builder.ToString().TrimEnd();

app/MindWork AI Studio/Assistants/Agenda/AssistantAgenda.razor.cs

@@ -618,7 +618,7 @@ public partial class AssistantAgenda : AssistantBaseCore<SettingsDialogAgenda>
     {
         var markdown = new StringBuilder();
         foreach (var item in items)
-            markdown.AppendLine($"- {item}");
+            markdown.AppendLineLF($"- {item}");
         
         return markdown.ToString();
     }

app/MindWork AI Studio/Assistants/AssistantBase.razor.cs

@@ -1090,7 +1090,7 @@ public abstract partial class AssistantBase<TSettings> : AssistantLowerBase wher
 
         if (outcome.Failures.Count > 0)
         {
-            var message = string.Join(Environment.NewLine, outcome.Failures.Select(failure => $"{failure.FileName}: {failure.UserMessage}"));
+            var message = string.Join('\n',outcome.Failures.Select(failure => $"{failure.FileName}: {failure.UserMessage}"));
             await this.MessageBus.SendError(new(AppIcons.VOICE_TRANSCRIPTION, message));
         }
         else if (outcome.Status is MediaImportStatus.FAILED)
@@ -1100,7 +1100,7 @@ public abstract partial class AssistantBase<TSettings> : AssistantLowerBase wher
 
         if (outcome.Warnings.Count > 0)
         {
-            var message = string.Join(Environment.NewLine, outcome.Warnings.Select(warning => $"{warning.FileName}: {warning.UserMessage}"));
+            var message = string.Join('\n',outcome.Warnings.Select(warning => $"{warning.FileName}: {warning.UserMessage}"));
             await this.MessageBus.SendWarning(new(AppIcons.VOICE_TRANSCRIPTION, message));
         }
 

app/MindWork AI Studio/Assistants/BatchProcessing/AssistantBatchProcessing.razor.Persistence.cs

@@ -106,9 +106,9 @@ public partial class AssistantBatchProcessing
     private async Task WriteLogAsync(string resolvedOutputDirectory)
     {
         var sb = new StringBuilder();
-        sb.AppendLine(CsvWriter.ToRow(LOG_SEPARATOR, T("File"), T("Time"), T("Model"), T("Status"), T("Details"), T("Tools used")));
+        sb.Append(CsvWriter.ToRow(LOG_SEPARATOR, T("File"), T("Time"), T("Model"), T("Status"), T("Details"), T("Tools used"))).Append(CsvWriter.ROW_END);
         foreach (var fileResult in this.fileResults.Where(x => x.Status is not BatchProcessingFileStatus.QUEUED and not BatchProcessingFileStatus.PROCESSING))
-            sb.AppendLine(CsvWriter.ToRow(LOG_SEPARATOR, fileResult.RelativePath, fileResult.ProcessedAt.ToString(TIME_FORMAT, CultureInfo.InvariantCulture), fileResult.ModelName, fileResult.Status.ToString(), fileResult.Message, fileResult.UsedTools));
+            sb.Append(CsvWriter.ToRow(LOG_SEPARATOR, fileResult.RelativePath, fileResult.ProcessedAt.ToString(TIME_FORMAT, CultureInfo.InvariantCulture), fileResult.ModelName, fileResult.Status.ToString(), fileResult.Message, fileResult.UsedTools)).Append(CsvWriter.ROW_END);
 
         await this.WriteCsvFileAsync(Path.Join(resolvedOutputDirectory, LOG_FILENAME), sb.ToString());
     }
@@ -120,9 +120,9 @@ public partial class AssistantBatchProcessing
     {
         var separator = this.csvSeparator.Character(this.customCsvSeparator);
         var sb = new StringBuilder();
-        sb.AppendLine(CsvWriter.ToRow(separator, T("File"), this.ResultColumnHeader));
+        sb.Append(CsvWriter.ToRow(separator, T("File"), this.ResultColumnHeader)).Append(CsvWriter.ROW_END);
         foreach (var fileResult in this.fileResults.Where(x => x.Status is BatchProcessingFileStatus.DONE))
-            sb.AppendLine(CsvWriter.ToRow(separator, fileResult.RelativePath, fileResult.ResultText));
+            sb.Append(CsvWriter.ToRow(separator, fileResult.RelativePath, fileResult.ResultText)).Append(CsvWriter.ROW_END);
 
         await this.WriteCsvFileAsync(Path.Join(resolvedOutputDirectory, this.ResolveResultsFileName()), sb.ToString());
     }

app/MindWork AI Studio/Assistants/BeyondFactsLab/BflReflectionFolder.cs

@@ -2,8 +2,6 @@ using System.Text;
 
 using AIStudio.Chat;
 
-using SharedTools;
-
 namespace AIStudio.Assistants.BeyondFactsLab;
 
 /// <summary>

app/MindWork AI Studio/Assistants/BiasDay/BiasOfTheDayAssistant.razor.cs

@@ -111,12 +111,12 @@ public partial class BiasOfTheDayAssistant : AssistantBaseCore<SettingsDialogAss
         var sb = new StringBuilder();
         if (this.biasOfTheDay.Links.Count > 0)
         {
-            sb.AppendLine();
-            sb.AppendLine("Please share the following sources with the user as a Markdown list:");
+            sb.AppendLineLF();
+            sb.AppendLineLF("Please share the following sources with the user as a Markdown list:");
             foreach (var link in this.biasOfTheDay.Links)
-                sb.AppendLine($"- {link}");
+                sb.AppendLineLF($"- {link}");
             
-            sb.AppendLine();
+            sb.AppendLineLF();
         }
         
         return sb.ToString();

app/MindWork AI Studio/Assistants/Coding/AssistantCoding.razor.cs

@@ -197,12 +197,12 @@ public partial class AssistantCoding : AssistantBaseCore<SettingsDialogCoding>
         var sbCompilerMessages = new StringBuilder();
         if (this.provideCompilerMessages)
         {
-            sbCompilerMessages.AppendLine("I have the following compiler messages:");
-            sbCompilerMessages.AppendLine();
-            sbCompilerMessages.AppendLine("```");
-            sbCompilerMessages.AppendLine(this.compilerMessages);
-            sbCompilerMessages.AppendLine("```");
-            sbCompilerMessages.AppendLine();
+            sbCompilerMessages.AppendLineLF("I have the following compiler messages:");
+            sbCompilerMessages.AppendLineLF();
+            sbCompilerMessages.AppendLineLF("```");
+            sbCompilerMessages.AppendLineLF(this.compilerMessages);
+            sbCompilerMessages.AppendLineLF("```");
+            sbCompilerMessages.AppendLineLF();
         }
 
         this.CreateChatThread();

app/MindWork AI Studio/Assistants/DocumentAnalysis/DocumentAnalysisAssistant.razor.cs

@@ -897,7 +897,7 @@ public partial class DocumentAnalysisAssistant : AssistantBaseCore<NoSettingsPan
 
         if (documents.Count > 0)
         {
-            sb.AppendLine("""
+            sb.AppendLineLF("""
                           # DOCUMENTS:
 
                           """);
@@ -941,7 +941,7 @@ public partial class DocumentAnalysisAssistant : AssistantBaseCore<NoSettingsPan
             }
 
             var fileContent = extraction.Content;
-            sb.AppendLine($"""
+            sb.AppendLineLF($"""
                            
                            ## DOCUMENT {numDocuments}:
                            File path: {document.FilePath}
@@ -961,7 +961,7 @@ public partial class DocumentAnalysisAssistant : AssistantBaseCore<NoSettingsPan
         {
             if (documents.Count == 0)
             {
-                sb.AppendLine($"""
+                sb.AppendLineLF($"""
 
                                There are {numImages} image file(s) attached as documents.
                                Please consider them as documents as well and use them to
@@ -971,7 +971,7 @@ public partial class DocumentAnalysisAssistant : AssistantBaseCore<NoSettingsPan
             }
             else
             {
-                sb.AppendLine($"""
+                sb.AppendLineLF($"""
 
                                Additionally, there are {numImages} image file(s) attached.
                                Please consider them as documents as well and use them to

app/MindWork AI Studio/Assistants/Dynamic/AssistantDynamic.razor.cs

@@ -345,24 +345,24 @@ public partial class AssistantDynamic : AssistantBaseCore<NoSettingsPanel>
             var componentSummary = this.assistantPlugin.CreateAuditComponentSummary();
             if (!string.IsNullOrWhiteSpace(componentSummary))
             {
-                builder.AppendLine("Current component overview:");
-                builder.AppendLine(componentSummary);
-                builder.AppendLine();
+                builder.AppendLineLF("Current component overview:");
+                builder.AppendLineLF(componentSummary);
+                builder.AppendLineLF();
             }
         }
 
         var promptPreview = await this.CollectUserPromptAsync();
         if (!string.IsNullOrWhiteSpace(promptPreview))
         {
-            builder.AppendLine("Current prompt preview from the assistant form:");
-            builder.AppendLine(promptPreview);
-            builder.AppendLine();
+            builder.AppendLineLF("Current prompt preview from the assistant form:");
+            builder.AppendLineLF(promptPreview);
+            builder.AppendLineLF();
         }
 
         if (this.ResultingContentBlock?.Content is ContentText text && !string.IsNullOrWhiteSpace(text.Text))
         {
-            builder.AppendLine("Last assistant response visible in this session:");
-            builder.AppendLine(text.Text);
+            builder.AppendLineLF("Last assistant response visible in this session:");
+            builder.AppendLineLF(text.Text);
         }
 
         return builder.ToString().Trim();
@@ -740,6 +740,6 @@ public partial class AssistantDynamic : AssistantBaseCore<NoSettingsPanel>
             }
         }
         
-        return prompt.Append(Environment.NewLine).ToString();
+        return prompt.AppendLineLF().ToString();
     }
 }

app/MindWork AI Studio/Assistants/EMail/AssistantEMail.razor.cs

@@ -256,9 +256,9 @@ public partial class AssistantEMail : AssistantBaseCore<SettingsDialogWritingEMa
             return string.Empty;
         
         var sb = new StringBuilder();
-        sb.AppendLine("I want to amplify the following points:");
+        sb.AppendLineLF("I want to amplify the following points:");
         foreach (var focus in this.selectedFoci)
-            sb.AppendLine($"- {focus}");
+            sb.AppendLineLF($"- {focus}");
         
         return sb.ToString();
     }

app/MindWork AI Studio/Assistants/SWOTAnalysis/SwotAnalysisMarkdownFormatter.cs

@@ -18,50 +18,50 @@ internal static class SwotAnalysisMarkdownFormatter
         var markdown = new StringBuilder();
 
         AppendHeading(markdown, result.MatrixHeading);
-        markdown.AppendLine($"| | {EscapeTableCell(result.PositiveLabel)} | {EscapeTableCell(result.NegativeLabel)} |");
-        markdown.AppendLine("|---|---|---|");
-        markdown.AppendLine($"| **{EscapeTableCell(result.InternalLabel)}** | {FormatCategoryCell(result.Strengths)} | {FormatCategoryCell(result.Weaknesses)} |");
-        markdown.AppendLine($"| **{EscapeTableCell(result.ExternalLabel)}** | {FormatCategoryCell(result.Opportunities)} | {FormatCategoryCell(result.Threats)} |");
-        markdown.AppendLine();
+        markdown.AppendLineLF($"| | {EscapeTableCell(result.PositiveLabel)} | {EscapeTableCell(result.NegativeLabel)} |");
+        markdown.AppendLineLF("|---|---|---|");
+        markdown.AppendLineLF($"| **{EscapeTableCell(result.InternalLabel)}** | {FormatCategoryCell(result.Strengths)} | {FormatCategoryCell(result.Weaknesses)} |");
+        markdown.AppendLineLF($"| **{EscapeTableCell(result.ExternalLabel)}** | {FormatCategoryCell(result.Opportunities)} | {FormatCategoryCell(result.Threats)} |");
+        markdown.AppendLineLF();
 
         AppendHeading(markdown, result.OverallAssessment.Label);
         foreach (var paragraph in result.OverallAssessment.Paragraphs)
         {
-            markdown.AppendLine(Markdown.EscapeInlineText(paragraph));
-            markdown.AppendLine();
+            markdown.AppendLineLF(Markdown.EscapeInlineText(paragraph));
+            markdown.AppendLineLF();
         }
 
         AppendHeading(markdown, result.PrioritizedActions.Label);
         if (result.PrioritizedActions.Items.Count == 0)
-            markdown.AppendLine(Markdown.EscapeInlineText(result.PrioritizedActions.EmptyMessage));
+            markdown.AppendLineLF(Markdown.EscapeInlineText(result.PrioritizedActions.EmptyMessage));
         else
             for (var index = 0; index < result.PrioritizedActions.Items.Count; index++)
             {
                 var action = result.PrioritizedActions.Items[index];
                 var factors = string.Join("; ", action.AddressedFactors.Select(Markdown.EscapeInlineText));
-                markdown.AppendLine($"{index + 1}. **{Markdown.EscapeInlineText(action.Action)}** — {Markdown.EscapeInlineText(action.Rationale)}  ");
-                markdown.AppendLine($"   *{factors}*");
+                markdown.AppendLineLF($"{index + 1}. **{Markdown.EscapeInlineText(action.Action)}** — {Markdown.EscapeInlineText(action.Rationale)}  ");
+                markdown.AppendLineLF($"   *{factors}*");
             }
 
-        markdown.AppendLine();
+        markdown.AppendLineLF();
         foreach (var category in result.Categories)
         {
             AppendHeading(markdown, category.Label);
             if (category.Findings.Count == 0)
-                markdown.AppendLine(Markdown.EscapeInlineText(category.EmptyMessage));
+                markdown.AppendLineLF(Markdown.EscapeInlineText(category.EmptyMessage));
             else
                 foreach (var finding in category.Findings)
-                    markdown.AppendLine($"- **{Markdown.EscapeInlineText(finding.Summary)}** — {Markdown.EscapeInlineText(finding.Explanation)}");
+                    markdown.AppendLineLF($"- **{Markdown.EscapeInlineText(finding.Summary)}** — {Markdown.EscapeInlineText(finding.Explanation)}");
 
-            markdown.AppendLine();
+            markdown.AppendLineLF();
         }
 
         AppendHeading(markdown, result.ModerationNotes.Label);
         if (result.ModerationNotes.Items.Count == 0)
-            markdown.AppendLine(Markdown.EscapeInlineText(result.ModerationNotes.EmptyMessage));
+            markdown.AppendLineLF(Markdown.EscapeInlineText(result.ModerationNotes.EmptyMessage));
         else
             foreach (var note in result.ModerationNotes.Items)
-                markdown.AppendLine($"- **{Markdown.EscapeInlineText(note.Change)}** — {Markdown.EscapeInlineText(note.Reason)}");
+                markdown.AppendLineLF($"- **{Markdown.EscapeInlineText(note.Change)}** — {Markdown.EscapeInlineText(note.Reason)}");
 
         return markdown.ToString().TrimEnd();
     }
@@ -69,7 +69,7 @@ internal static class SwotAnalysisMarkdownFormatter
     private static void AppendHeading(StringBuilder markdown, string heading)
     {
         markdown.Append("## ");
-        markdown.AppendLine(Markdown.EscapeInlineText(heading));
+        markdown.AppendLineLF(Markdown.EscapeInlineText(heading));
     }
 
     private static string FormatCategoryCell(SwotCategory category)

app/MindWork AI Studio/Assistants/SlideBuilder/SlideAssistant.razor.Library.cs

@@ -227,7 +227,7 @@ public partial class SlideAssistant
         if (library.Pictures.Count == 0)
             return string.Empty;
 
-        var list = string.Join(Environment.NewLine, library.Pictures.Select((picture, index) => $"- Picture {firstNumber + index}: {picture.Name}{(picture.IsIcon ? " (icon)" : string.Empty)}"));
+        var list = string.Join('\n',library.Pictures.Select((picture, index) => $"- Picture {firstNumber + index}: {picture.Name}{(picture.IsIcon ? " (icon)" : string.Empty)}"));
         var sanitizedList = await guardService.SanitizeAsync(list, PromptInjectionSource.FileContent(folderPath), promptInjectionScope);
         return $"""
 

app/MindWork AI Studio/Assistants/SlideBuilder/SlideAssistant.razor.Presentation.cs

@@ -357,7 +357,7 @@ public partial class SlideAssistant
         if (this.SourceImagesOfRequest().Count > 0)
             rules.Add("    - Images attached as source material are for reading only. Never place them on a slide.");
 
-        return string.Join(Environment.NewLine, rules);
+        return string.Join('\n',rules);
     }
 
     /// <summary>
@@ -376,7 +376,7 @@ public partial class SlideAssistant
         if (pictures.Count == 0)
             return string.Empty;
 
-        var list = string.Join(Environment.NewLine, pictures.Select((picture, index) => $"- Picture {index + 1}: {picture.FileName}"));
+        var list = string.Join('\n',pictures.Select((picture, index) => $"- Picture {index + 1}: {picture.FileName}"));
         var seeing = modelSeesPictures
             ? "The images attached to this request start with these pictures, in this order."
             : "You cannot see these pictures. Place them by what their names say.";
@@ -516,7 +516,7 @@ public partial class SlideAssistant
 
     private static string RepairPromptOf(IReadOnlyList<string> issues)
     {
-        var listedIssues = string.Join(Environment.NewLine, issues.Take(MAX_REPORTED_ISSUES).Select(issue => $"- {issue}"));
+        var listedIssues = string.Join('\n',issues.Take(MAX_REPORTED_ISSUES).Select(issue => $"- {issue}"));
         return $"""
                 Your JSON does not fit the layouts yet:
                 {listedIssues}

app/MindWork AI Studio/Assistants/SlideBuilder/SlideAssistant.razor.cs

@@ -542,7 +542,7 @@ public partial class SlideAssistant : AssistantBaseCore<SettingsDialogSlideBuild
         if (prompts.Count == 0)
             return "            - Do not tailor the text to a specific audience.";
 
-        return string.Join(Environment.NewLine, prompts.Select(prompt => $"            - {prompt}"));
+        return string.Join('\n',prompts.Select(prompt => $"            - {prompt}"));
     }
     
     private string GetDocumentTaskDescription()
@@ -577,7 +577,7 @@ public partial class SlideAssistant : AssistantBaseCore<SettingsDialogSlideBuild
 
         if (documents.Count > 0)
         {
-            sb.AppendLine("""
+            sb.AppendLineLF("""
                           # DOCUMENTS:
 
                           """);
@@ -614,7 +614,7 @@ public partial class SlideAssistant : AssistantBaseCore<SettingsDialogSlideBuild
             }
 
             var fileContent = extraction.Content;
-            sb.AppendLine($"""
+            sb.AppendLineLF($"""
                            
                            ## DOCUMENT {numDocuments}:
                            File path: {document.FilePath}
@@ -634,7 +634,7 @@ public partial class SlideAssistant : AssistantBaseCore<SettingsDialogSlideBuild
         {
             if (documents.Count == 0)
             {
-                sb.AppendLine($"""
+                sb.AppendLineLF($"""
 
                                There are {numImages} image file(s) attached as source material.
                                Please consider them as documents as well and use them to
@@ -644,7 +644,7 @@ public partial class SlideAssistant : AssistantBaseCore<SettingsDialogSlideBuild
             }
             else
             {
-                sb.AppendLine($"""
+                sb.AppendLineLF($"""
 
                                Additionally, there are {numImages} image file(s) attached as source material.
                                Please consider them as documents as well and use them to

app/MindWork AI Studio/Assistants/VisualBriefing/VisualBriefingAssistant.razor.Sources.cs

@@ -188,13 +188,13 @@ public partial class VisualBriefingAssistant
             return;
 
         if (outcome.Failures.Count > 0)
-            await this.MessageBus.SendError(new(AppIcons.VOICE_TRANSCRIPTION, string.Join(Environment.NewLine, outcome.Failures.Select(failure => $"{failure.FileName}: {failure.UserMessage}"))));
+            await this.MessageBus.SendError(new(AppIcons.VOICE_TRANSCRIPTION, string.Join('\n',outcome.Failures.Select(failure => $"{failure.FileName}: {failure.UserMessage}"))));
 
         else if (outcome.Status is MediaImportStatus.FAILED)
             await this.MessageBus.SendError(new(AppIcons.VOICE_TRANSCRIPTION, T("The media file could not be transcribed.")));
 
         if (outcome.Warnings.Count > 0)
-            await this.MessageBus.SendWarning(new(AppIcons.VOICE_TRANSCRIPTION, string.Join(Environment.NewLine, outcome.Warnings.Select(warning => $"{warning.FileName}: {warning.UserMessage}"))));
+            await this.MessageBus.SendWarning(new(AppIcons.VOICE_TRANSCRIPTION, string.Join('\n',outcome.Warnings.Select(warning => $"{warning.FileName}: {warning.UserMessage}"))));
 
         if (outcome.Status is MediaImportStatus.CANCELLED)
             await this.MessageBus.SendWarning(new(AppIcons.VOICE_TRANSCRIPTION, T("The media transcription was canceled.")));

app/MindWork AI Studio/Assistants/VisualBriefing/VisualBriefingStructuredResponseProcessor.cs

@@ -78,7 +78,7 @@ internal static partial class VisualBriefingStructuredResponseProcessor
         var root = GetContract(typeof(T));
         var shapes = EnumerateObjectShapes(root);
         var builder = new StringBuilder();
-        builder.AppendLine("Strict JSON grammar generated from the active response contract:");
+        builder.AppendLineLF("Strict JSON grammar generated from the active response contract:");
         foreach (var shape in shapes)
         {
             builder.Append(shape.Name);
@@ -98,7 +98,7 @@ internal static partial class VisualBriefingStructuredResponseProcessor
                 if (property.AllowsNull)
                     builder.Append(" | null");
             }
-            builder.AppendLine("}");
+            builder.AppendLineLF("}");
         }
         builder.Append(
             "Every object may contain only the properties shown above. Required properties must be present even when their value is null.");

app/MindWork AI Studio/Chat/ContentExtensions.cs

@@ -108,7 +108,7 @@ public static class ContentExtensions
             if (sources.Length is 0 || !file.Format.TryToComment(sources, out var comment))
                 return file.Content;
 
-            return $"{file.Content}{Environment.NewLine}{Environment.NewLine}{comment}";
+            return $"{file.Content}\n\n{comment}";
         }
     }
 

app/MindWork AI Studio/Chat/ContentText.cs

@@ -775,7 +775,7 @@ public sealed class ContentText : IContent
     {
         var sb = new StringBuilder();
         var attachmentWebAddresses = new HashSet<string>(StringComparer.Ordinal);
-        sb.AppendLine(this.Text);
+        sb.AppendLineLF(this.Text);
 
         if(this.FileAttachments.Count > 0)
         {
@@ -856,13 +856,13 @@ public sealed class ContentText : IContent
                         content = extraction.Content;
                     }
 
-                    documentBlocks.AppendLine();
-                    documentBlocks.AppendLine("---------------------------------------");
-                    documentBlocks.AppendLine($"File path: {document.FilePath}");
-                    documentBlocks.AppendLine("File content:");
-                    documentBlocks.AppendLine("````");
-                    documentBlocks.AppendLine(content);
-                    documentBlocks.AppendLine("````");
+                    documentBlocks.AppendLineLF();
+                    documentBlocks.AppendLineLF("---------------------------------------");
+                    documentBlocks.AppendLineLF($"File path: {document.FilePath}");
+                    documentBlocks.AppendLineLF("File content:");
+                    documentBlocks.AppendLineLF("````");
+                    documentBlocks.AppendLineLF(content);
+                    documentBlocks.AppendLineLF("````");
 
                     foreach (var address in WebAddresses.Find(content))
                         if (WebAddresses.TryCreateRequestKey(address, out var requestKey))
@@ -871,17 +871,17 @@ public sealed class ContentText : IContent
 
                 if (documentBlocks.Length > 0)
                 {
-                    sb.AppendLine();
-                    sb.AppendLine("The following files are attached to this message:");
+                    sb.AppendLineLF();
+                    sb.AppendLineLF("The following files are attached to this message:");
                     sb.Append(documentBlocks);
                 }
 
                 var numImages = normalizedAttachments.Count(x => x is { IsImage: true, Exists: true });
                 if (numImages > 0)
                 {
-                    sb.AppendLine();
-                    sb.AppendLine($"Additionally, there are {numImages} image file(s) attached to this message. ");
-                    sb.AppendLine("Please consider them as part of the message content and use them to answer accordingly.");
+                    sb.AppendLineLF();
+                    sb.AppendLineLF($"Additionally, there are {numImages} image file(s) attached to this message. ");
+                    sb.AppendLineLF("Please consider them as part of the message content and use them to answer accordingly.");
                 }
             }
 

app/MindWork AI Studio/Chat/MarkdownRenderPlanner.cs

@@ -171,7 +171,7 @@ internal static class MarkdownRenderPlanner
             return cleaned;
 
         if (LooksLikeRawHtml(cleaned))
-            return $"{HTML_CODE_FENCE_PREFIX}{Environment.NewLine}{cleaned}{Environment.NewLine}{CODE_FENCE_MARKER_BACKTICK}";
+            return $"{HTML_CODE_FENCE_PREFIX}\n{cleaned}\n{CODE_FENCE_MARKER_BACKTICK}";
 
         return cleaned;
     }

app/MindWork AI Studio/Chat/MathJaxBlock.razor.cs

@@ -38,5 +38,5 @@ public partial class MathJaxBlock
         ? "formula-block"
         : $"formula-block {this.Class}";
 
-    private string MathText => $"$${Environment.NewLine}{this.Value}{Environment.NewLine}$$";
+    private string MathText => $"$$\n{this.Value}\n$$";
 }

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

@@ -171,7 +171,7 @@ public partial class AttachDocuments : MSGComponentBase
 
         if (outcome.Failures.Count > 0)
         {
-            var message = string.Join(Environment.NewLine, outcome.Failures.Select(failure => $"{failure.FileName}: {failure.UserMessage}"));
+            var message = string.Join('\n',outcome.Failures.Select(failure => $"{failure.FileName}: {failure.UserMessage}"));
             await this.MessageBus.SendError(new(AppIcons.VOICE_TRANSCRIPTION, message));
         }
         else if (outcome.Status is MediaImportStatus.FAILED)
@@ -181,7 +181,7 @@ public partial class AttachDocuments : MSGComponentBase
 
         if (outcome.Warnings.Count > 0)
         {
-            var message = string.Join(Environment.NewLine, outcome.Warnings.Select(warning => $"{warning.FileName}: {warning.UserMessage}"));
+            var message = string.Join('\n',outcome.Warnings.Select(warning => $"{warning.FileName}: {warning.UserMessage}"));
             await this.MessageBus.SendWarning(new(AppIcons.VOICE_TRANSCRIPTION, message));
         }
 

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

@@ -532,7 +532,7 @@ public partial class ChatComponent : MSGComponentBase
 
         if (outcome.Failures.Count > 0)
         {
-            var message = string.Join(Environment.NewLine, outcome.Failures.Select(failure => $"{failure.FileName}: {failure.UserMessage}"));
+            var message = string.Join('\n',outcome.Failures.Select(failure => $"{failure.FileName}: {failure.UserMessage}"));
             await this.MessageBus.SendError(new(AppIcons.VOICE_TRANSCRIPTION, message));
         }
         else if (outcome.Status is MediaImportStatus.FAILED)
@@ -542,7 +542,7 @@ public partial class ChatComponent : MSGComponentBase
 
         if (outcome.Warnings.Count > 0)
         {
-            var message = string.Join(Environment.NewLine, outcome.Warnings.Select(warning => $"{warning.FileName}: {warning.UserMessage}"));
+            var message = string.Join('\n',outcome.Warnings.Select(warning => $"{warning.FileName}: {warning.UserMessage}"));
             await this.MessageBus.SendWarning(new(AppIcons.VOICE_TRANSCRIPTION, message));
         }
 

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

@@ -143,7 +143,7 @@ public partial class ReadFileContent : MSGComponentBase
 
         if (outcome.Failures.Count > 0)
         {
-            var message = string.Join(Environment.NewLine, outcome.Failures.Select(failure => $"{failure.FileName}: {failure.UserMessage}"));
+            var message = string.Join('\n',outcome.Failures.Select(failure => $"{failure.FileName}: {failure.UserMessage}"));
             await this.MessageBus.SendError(new(AppIcons.VOICE_TRANSCRIPTION, message));
         }
         else if (outcome.Status is MediaImportStatus.FAILED)
@@ -153,7 +153,7 @@ public partial class ReadFileContent : MSGComponentBase
 
         if (outcome.Warnings.Count > 0)
         {
-            var message = string.Join(Environment.NewLine, outcome.Warnings.Select(warning => $"{warning.FileName}: {warning.UserMessage}"));
+            var message = string.Join('\n',outcome.Warnings.Select(warning => $"{warning.FileName}: {warning.UserMessage}"));
             await this.MessageBus.SendWarning(new(AppIcons.VOICE_TRANSCRIPTION, message));
         }
 

app/MindWork AI Studio/Components/Settings/SettingsPanelApp.razor.cs

@@ -153,7 +153,7 @@ public partial class SettingsPanelApp : SettingsPanelBase
 
     private string GetExternalHttpCustomRootCertificateAllowedHostsText()
     {
-        return string.Join(Environment.NewLine, this.SettingsManager.ConfigurationData.App.ExternalHttpCustomRootCertificateAllowedHosts.Order(StringComparer.OrdinalIgnoreCase));
+        return string.Join('\n',this.SettingsManager.ConfigurationData.App.ExternalHttpCustomRootCertificateAllowedHosts.Order(StringComparer.OrdinalIgnoreCase));
     }
 
     private bool AreExternalHttpCustomRootCertificateDetailsDisabled()

app/MindWork AI Studio/Components/Settings/SettingsPanelEmbeddings.razor.cs

@@ -118,7 +118,7 @@ public partial class SettingsPanelEmbeddings : SettingsPanelProviderBase
         //
         var dialogParameters = string.IsNullOrEmpty(affectedDataSources)
             ? new DialogParameters<ConfirmDialog> { { x => x.Message, question } }
-            : new DialogParameters<ConfirmDialog> { { x => x.MarkdownBody, $"{affectedDataSources}{Environment.NewLine}{question}" } };
+            : new DialogParameters<ConfirmDialog> { { x => x.MarkdownBody, $"{affectedDataSources}\n{question}" } };
 
         var dialogReference = await this.DialogService.ShowAsync<ConfirmDialog>(T("Delete Embedding Provider"), dialogParameters, DialogOptions.FULLSCREEN);
         var dialogResult = await dialogReference.Result;
@@ -227,7 +227,7 @@ public partial class SettingsPanelEmbeddings : SettingsPanelProviderBase
             return;
         }
 
-        var resultText = string.Join(Environment.NewLine, vector.Select(value => value.ToString("G9", CultureInfo.InvariantCulture)));
+        var resultText = string.Join('\n',vector.Select(value => value.ToString("G9", CultureInfo.InvariantCulture)));
         var resultParameters = new DialogParameters<EmbeddingResultDialog>
         {
             { x => x.ResultText, resultText },

app/MindWork AI Studio/Dialogs/DataSourceERI_V1InfoDialog.razor.cs

@@ -103,9 +103,9 @@ public partial class DataSourceERI_V1InfoDialog : MSGComponentBase, ISecretId
         foreach (var (paramName, description) in parameters)
         {
             sb.Append(T("Parameter: "));
-            sb.AppendLine(paramName);
-            sb.AppendLine(description);
-            sb.AppendLine();
+            sb.AppendLineLF(paramName);
+            sb.AppendLineLF(description);
+            sb.AppendLineLF();
         }
 
         return sb.ToString();

app/MindWork AI Studio/Dialogs/DataSourceLocalDirectoryInfoDialog.razor.cs

@@ -86,7 +86,7 @@ public partial class DataSourceLocalDirectoryInfoDialog : MSGComponentBase
     private void UpdateFileList(string file)
     {
         this.directoryFiles.Append("- ");
-        this.directoryFiles.AppendLine(file);
+        this.directoryFiles.AppendLineLF(file);
         this.directoryFilesText = this.directoryFiles.ToString();
     }
 

app/MindWork AI Studio/GlobalUsings.cs

@@ -5,4 +5,6 @@ global using AIStudio.Tools;
 global using Microsoft.JSInterop;
 
 global using MudBlazor;
-global using MudExtensions;
+global using MudExtensions;
+
+global using SharedTools.Text;

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

@@ -47,7 +47,7 @@ public sealed class AnthropicToolCallingAdapter(Model chatModel, IList<IMessageB
             Messages = [..baseMessages, ..this.internalMessages],
             System = finalResponseInstruction is null
                 ? systemPrompt
-                : $"{systemPrompt}{Environment.NewLine}{Environment.NewLine}{finalResponseInstruction}",
+                : $"{systemPrompt}\n\n{finalResponseInstruction}",
 
             MaxTokens = maxTokens,
             Stream = true,

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

@@ -47,7 +47,7 @@ public sealed class ChatCompletionToolCallingAdapter<TRequest>(
         var requestSystemPrompt = finalResponseInstruction is null
             ? systemPrompt : systemPrompt with
             {
-                Content = $"{systemPrompt.Content}{Environment.NewLine}{Environment.NewLine}{finalResponseInstruction}",
+                Content = $"{systemPrompt.Content}\n\n{finalResponseInstruction}",
             };
 
         ChatCompletionAPIRequest requestDtoBase = await requestFactory(requestSystemPrompt, apiParameters, includeTools ? providerTools : null);

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

@@ -37,7 +37,7 @@ public sealed class ResponsesToolCallingAdapter(Model chatModel, IList<object> b
         {
             requestInput[0] = systemPrompt with
             {
-                Content = $"{systemPrompt.Content}{Environment.NewLine}{Environment.NewLine}{finalResponseInstruction}",
+                Content = $"{systemPrompt.Content}\n\n{finalResponseInstruction}",
             };
         }
 

app/MindWork AI Studio/Settings/ChatTemplate.cs

@@ -658,7 +658,7 @@ public record ChatTemplate(
             return true;
 
         var builder = new StringBuilder();
-        builder.AppendLine("{");
+        builder.AppendLineLF("{");
         for (var i = 0; i < this.ExampleConversation.Count; i++)
         {
             var block = this.ExampleConversation[i];
@@ -680,10 +680,10 @@ public record ChatTemplate(
                 return false;
             }
 
-            builder.AppendLine("        {");
-            builder.AppendLine($"            [\"Role\"] = \"{block.Role}\",");
-            builder.AppendLine($"            [\"Content\"] = {LuaTools.ToLuaStringLiteral(textContent.Text)},");
-            builder.AppendLine("        },");
+            builder.AppendLineLF("        {");
+            builder.AppendLineLF($"            [\"Role\"] = \"{block.Role}\",");
+            builder.AppendLineLF($"            [\"Content\"] = {LuaTools.ToLuaStringLiteral(textContent.Text)},");
+            builder.AppendLineLF("        },");
         }
 
         builder.Append("    }");
@@ -693,7 +693,7 @@ public record ChatTemplate(
 
     private static string BuildOptionalStringLua(string fieldName, string? value) => value is null
         ? string.Empty
-        : $"{Environment.NewLine}    [\"{fieldName}\"] = {LuaTools.ToLuaStringLiteral(value)},";
+        : $"\n    [\"{fieldName}\"] = {LuaTools.ToLuaStringLiteral(value)},";
 
     /// <remarks>
     /// An empty set is written out as an empty table rather than being left out: the two say
@@ -706,21 +706,21 @@ public record ChatTemplate(
             return string.Empty;
 
         var builder = new StringBuilder();
-        builder.AppendLine();
+        builder.AppendLineLF();
         if (this.ToolIds.Count == 0)
         {
             builder.Append("""    ["ToolIds"] = {},""");
             return builder.ToString();
         }
 
-        builder.AppendLine("""    ["ToolIds"] = {""");
+        builder.AppendLineLF("""    ["ToolIds"] = {""");
 
         //
         // A set has no order of its own, so exporting the same template twice would otherwise
         // produce two different files. Sorting keeps the plugin diffs readable:
         //
         foreach (var toolId in this.ToolIds.Order(StringComparer.Ordinal))
-            builder.AppendLine($"        {LuaTools.ToLuaStringLiteral(toolId)},");
+            builder.AppendLineLF($"        {LuaTools.ToLuaStringLiteral(toolId)},");
 
         builder.Append("    },");
         return builder.ToString();
@@ -732,22 +732,22 @@ public record ChatTemplate(
             return string.Empty;
 
         var builder = new StringBuilder();
-        builder.AppendLine();
-        builder.AppendLine("""    ["DataSourceOptions"] = {""");
-        builder.AppendLine($"""        ["DisableDataSources"] = {options.DisableDataSources.ToString().ToLowerInvariant()},""");
-        builder.AppendLine($"""        ["AutomaticDataSourceSelection"] = {options.AutomaticDataSourceSelection.ToString().ToLowerInvariant()},""");
-        builder.AppendLine($"""        ["AutomaticValidation"] = {options.AutomaticValidation.ToString().ToLowerInvariant()},""");
-        builder.AppendLine($"""        ["RetrievalMode"] = "{options.RetrievalMode}",""");
+        builder.AppendLineLF();
+        builder.AppendLineLF("""    ["DataSourceOptions"] = {""");
+        builder.AppendLineLF($"""        ["DisableDataSources"] = {options.DisableDataSources.ToString().ToLowerInvariant()},""");
+        builder.AppendLineLF($"""        ["AutomaticDataSourceSelection"] = {options.AutomaticDataSourceSelection.ToString().ToLowerInvariant()},""");
+        builder.AppendLineLF($"""        ["AutomaticValidation"] = {options.AutomaticValidation.ToString().ToLowerInvariant()},""");
+        builder.AppendLineLF($"""        ["RetrievalMode"] = "{options.RetrievalMode}",""");
 
         if (options.PreselectedDataSourceIds.Count == 0)
-            builder.AppendLine("""        ["PreselectedDataSourceIds"] = {},""");
+            builder.AppendLineLF("""        ["PreselectedDataSourceIds"] = {},""");
         else
         {
-            builder.AppendLine("""        ["PreselectedDataSourceIds"] = {""");
+            builder.AppendLineLF("""        ["PreselectedDataSourceIds"] = {""");
             foreach (var dataSourceId in options.PreselectedDataSourceIds)
-                builder.AppendLine($"            {LuaTools.ToLuaStringLiteral(dataSourceId)},");
+                builder.AppendLineLF($"            {LuaTools.ToLuaStringLiteral(dataSourceId)},");
 
-            builder.AppendLine("        },");
+            builder.AppendLineLF("        },");
         }
 
         builder.Append("    },");
@@ -801,9 +801,9 @@ public record ChatTemplate(
             return "{}";
 
         var builder = new StringBuilder();
-        builder.AppendLine("{");
+        builder.AppendLineLF("{");
         foreach (var path in paths)
-            builder.AppendLine($"        \"{LuaTools.EscapeLuaString(path)}\",");
+            builder.AppendLineLF($"        \"{LuaTools.EscapeLuaString(path)}\",");
 
         builder.Append("    }");
         return builder.ToString();

app/MindWork AI Studio/Settings/ExportedTokenizerPath.cs

@@ -93,6 +93,6 @@ public static class ExportedTokenizerPath
             field,
         ];
 
-        return string.Join($"{Environment.NewLine}{indentation}", lines);
+        return string.Join($"\n{indentation}", lines);
     }
 }

app/MindWork AI Studio/Settings/ProviderCapabilityOverrides.cs

@@ -346,14 +346,14 @@ public sealed record ProviderCapabilityOverrides
             return string.Empty;
 
         var builder = new StringBuilder();
-        builder.AppendLine($@"{indentation}[""CapabilityOverrides""] = {{");
+        builder.AppendLineLF($@"{indentation}[""CapabilityOverrides""] = {{");
         foreach (var capability in SUPPORTED_CAPABILITIES)
         {
             var overrideValue = this.GetOverride(capability);
             if (overrideValue is null)
                 continue;
 
-            builder.AppendLine($@"{indentation}    [""{capability}""] = {overrideValue.Value.ToString().ToLowerInvariant()},");
+            builder.AppendLineLF($@"{indentation}    [""{capability}""] = {overrideValue.Value.ToString().ToLowerInvariant()},");
         }
 
         foreach (var key in NUMERIC_KEYS)
@@ -361,7 +361,7 @@ public sealed record ProviderCapabilityOverrides
             if (this.GetNumber(key) is not { } number)
                 continue;
 
-            builder.AppendLine($@"{indentation}    [""{key}""] = {number.ToString(CultureInfo.InvariantCulture)},");
+            builder.AppendLineLF($@"{indentation}    [""{key}""] = {number.ToString(CultureInfo.InvariantCulture)},");
         }
 
         builder.Append($@"{indentation}}},");

app/MindWork AI Studio/Tools/ContentStreamSseHandler.cs

@@ -43,8 +43,8 @@ public static class ContentStreamSseHandler
                         var spreadSheetResult = new StringBuilder();
                         if (rowNumber == 0)
                         {
-                            spreadSheetResult.AppendLine();
-                            spreadSheetResult.AppendLine($"# {sheetName}");
+                            spreadSheetResult.AppendLineLF();
+                            spreadSheetResult.AppendLineLF($"# {sheetName}");
                         }
 
                         spreadSheetResult.Append(sseEvent.Content);

app/MindWork AI Studio/Tools/CsvWriter.cs

@@ -8,6 +8,11 @@ namespace AIStudio.Tools;
 /// </summary>
 public static class CsvWriter
 {
+    /// <summary>
+    /// The end of every row: CR LF, as RFC 4180 asks for, on every system.
+    /// </summary>
+    public const string ROW_END = "\r\n";
+
     /// <summary>
     /// The separator a spreadsheet expects from a CSV file written for the given language.
     /// </summary>

app/MindWork AI Studio/Tools/DataSourceReindexWarning.cs

@@ -122,18 +122,18 @@ public static class DataSourceReindexWarning
     private static async Task<bool> ConfirmNewLocationAsync(IDialogService dialogService, bool usesCloudEmbedding)
     {
         var body = new StringBuilder();
-        body.AppendLine(TB("AI Studio keeps what it has already prepared for every file it finds unchanged at the new location, that is, of the same type and with the same size and modification time. In a folder, such a file also has to keep its name and the subfolder it is in."));
-        body.AppendLine();
-        body.AppendLine(TB("Every other file goes to your embedding provider once more, which takes a while with many files. Files missing at the new location are removed from the index, while your files on disk stay as they are."));
+        body.AppendLineLF(TB("AI Studio keeps what it has already prepared for every file it finds unchanged at the new location, that is, of the same type and with the same size and modification time. In a folder, such a file also has to keep its name and the subfolder it is in."));
+        body.AppendLineLF();
+        body.AppendLineLF(TB("Every other file goes to your embedding provider once more, which takes a while with many files. Files missing at the new location are removed from the index, while your files on disk stay as they are."));
 
         if (usesCloudEmbedding)
         {
-            body.AppendLine();
-            body.AppendLine(TB("Your embedding provider runs in the cloud, so preparing files again costs money."));
+            body.AppendLineLF();
+            body.AppendLineLF(TB("Your embedding provider runs in the cloud, so preparing files again costs money."));
         }
 
-        body.AppendLine();
-        body.AppendLine(TB("Do you want to apply this change anyway?"));
+        body.AppendLineLF();
+        body.AppendLineLF(TB("Do you want to apply this change anyway?"));
 
         var dialogParameters = new DialogParameters<ConfirmDialog>
         {
@@ -173,11 +173,11 @@ public static class DataSourceReindexWarning
         var body = new StringBuilder();
 
         // Counted rather than put into a plural form: the I18N has no mechanism for one.
-        body.AppendLine(string.Format(TB("These data sources are set up with this embedding provider ({0}):"), affected.Count.CompactCount()));
-        body.AppendLine();
-        body.AppendLine(FormatDataSourceNames(affected));
-        body.AppendLine();
-        body.AppendLine(TB("They keep answering keyword searches, but searching them by meaning stops working, and no further documents can be prepared for them. The ones which are already prepared stay tied to this provider as well, so you cannot simply move them to another one."));
+        body.AppendLineLF(string.Format(TB("These data sources are set up with this embedding provider ({0}):"), affected.Count.CompactCount()));
+        body.AppendLineLF();
+        body.AppendLineLF(FormatDataSourceNames(affected));
+        body.AppendLineLF();
+        body.AppendLineLF(TB("They keep answering keyword searches, but searching them by meaning stops working, and no further documents can be prepared for them. The ones which are already prepared stay tied to this provider as well, so you cannot simply move them to another one."));
 
         return body.ToString();
     }
@@ -211,7 +211,7 @@ public static class DataSourceReindexWarning
         if (names.Count > MAX_NAMED_DATA_SOURCES)
             lines.Add($"- {string.Format(TB("and {0} more."), (names.Count - MAX_NAMED_DATA_SOURCES).CompactCount())}");
 
-        return string.Join(Environment.NewLine, lines);
+        return string.Join('\n', lines);
     }
 
     private static async Task<bool> ConfirmAsync(IDialogService dialogService, IReadOnlyList<IDataSourceBase> affected, bool usesCloudEmbedding)
@@ -222,20 +222,20 @@ public static class DataSourceReindexWarning
         var body = new StringBuilder();
 
         // Counted rather than put into a plural form: the I18N has no mechanism for one.
-        body.AppendLine(string.Format(TB("This change makes the prepared documents of the following data sources unusable ({0}):"), affected.Count.CompactCount()));
-        body.AppendLine();
-        body.AppendLine(FormatDataSourceNames(affected));
-        body.AppendLine();
-        body.AppendLine(TB("Everything prepared for them is thrown away, and every one of their documents goes to your embedding provider once more. With a large data source, this takes a while."));
+        body.AppendLineLF(string.Format(TB("This change makes the prepared documents of the following data sources unusable ({0}):"), affected.Count.CompactCount()));
+        body.AppendLineLF();
+        body.AppendLineLF(FormatDataSourceNames(affected));
+        body.AppendLineLF();
+        body.AppendLineLF(TB("Everything prepared for them is thrown away, and every one of their documents goes to your embedding provider once more. With a large data source, this takes a while."));
 
         if (usesCloudEmbedding)
         {
-            body.AppendLine();
-            body.AppendLine(TB("Your embedding provider runs in the cloud, so preparing everything again costs money."));
+            body.AppendLineLF();
+            body.AppendLineLF(TB("Your embedding provider runs in the cloud, so preparing everything again costs money."));
         }
 
-        body.AppendLine();
-        body.AppendLine(TB("Do you want to apply this change anyway?"));
+        body.AppendLineLF();
+        body.AppendLineLF(TB("Do you want to apply this change anyway?"));
 
         var dialogParameters = new DialogParameters<ConfirmDialog>
         {

app/MindWork AI Studio/Tools/DocumentManager.cs

@@ -32,8 +32,8 @@ public sealed class DocumentManager
             // headings, leaving the AI unable to tell the structure of the document apart from our
             // boundaries. The presentation reader marks its slides the same way.
             //
-            this.currentPageContent.AppendLine(metadata.Document?.PageIsExact is true ? $"<!-- Page {pageNumber} -->" : $"<!-- Estimated page {pageNumber} -->");
-            this.currentPageContent.AppendLine();
+            this.currentPageContent.AppendLineLF(metadata.Document?.PageIsExact is true ? $"<!-- Page {pageNumber} -->" : $"<!-- Estimated page {pageNumber} -->");
+            this.currentPageContent.AppendLineLF();
             this.currentPageContent.Append(content);
 
             //
@@ -55,8 +55,8 @@ public sealed class DocumentManager
             var markdownImage = ContentStreamSseHandler.BuildImageMarkdown(image.Id, image.MediaType);
             if (markdownImage is not null)
             {
-                this.currentPageContent.AppendLine();
-                this.currentPageContent.AppendLine(markdownImage);
+                this.currentPageContent.AppendLineLF();
+                this.currentPageContent.AppendLineLF(markdownImage);
 
                 //
                 // The runtime counted the text of this page, not the image we just embedded into it.

app/MindWork AI Studio/Tools/FileExportFormatExtensions.cs

@@ -202,12 +202,12 @@ public static class FileExportFormatExtensions
             switch (format)
             {
                 case FileExportFormat.HTML or FileExportFormat.MARKDOWN:
-                    var commentText = string.Join(Environment.NewLine, lines).Replace("-->", "-- >").Replace("--!>", "--! >");
-                    comment = $"<!--{Environment.NewLine}{commentText}{Environment.NewLine}-->";
+                    var commentText = string.Join('\n', lines).Replace("-->", "-- >").Replace("--!>", "--! >");
+                    comment = $"<!--\n{commentText}\n-->";
                     return true;
 
                 case FileExportFormat.LATEX:
-                    comment = string.Join(Environment.NewLine, lines.Select(line => line.Length is 0 ? "%" : $"% {line}"));
+                    comment = string.Join('\n', lines.Select(line => line.Length is 0 ? "%" : $"% {line}"));
                     return true;
 
                 default:

app/MindWork AI Studio/Tools/Markdown.cs

@@ -99,7 +99,7 @@ public static class Markdown
         if (document.Descendants<FencedCodeBlock>().LastOrDefault() is not { ClosingFencedCharCount: 0 } openFence)
             return markdownText;
 
-        return $"{markdownText}{Environment.NewLine}{new string(openFence.FencedChar, openFence.OpeningFencedCharCount)}";
+        return $"{markdownText}\n{new string(openFence.FencedChar, openFence.OpeningFencedCharCount)}";
     }
 
     /// <summary>Puts a block of Markdown below a Markdown text, such as its sources or a notice.</summary>
@@ -118,7 +118,7 @@ public static class Markdown
         // The blank line is not cosmetic: it ends a paragraph, a list, a table, or a block quote, so
         // that the block stands on its own instead of being pulled into the last block of the text.
         //
-        return $"{CloseOpenCodeFence(markdownText)}{Environment.NewLine}{Environment.NewLine}{block}";
+        return $"{CloseOpenCodeFence(markdownText)}\n\n{block}";
     }
 
     public static string RemoveSharedIndentation(string value)

app/MindWork AI Studio/Tools/PlainFileExport.cs

@@ -113,7 +113,7 @@ public static class PlainFileExport
     /// Turns a formula into a file of LaTeX, between \[ and \] as a formula of its own, so that it can be
     /// pasted into a document as it is.
     /// </summary>
-    private static FoundFile ReadFormula(string formula) => new(string.Empty, FileExportFormat.LATEX, SourceCodeLanguage.NONE, $@"\[{Environment.NewLine}{formula}{Environment.NewLine}\]");
+    private static FoundFile ReadFormula(string formula) => new(string.Empty, FileExportFormat.LATEX, SourceCodeLanguage.NONE, $"\\[\n{formula}\n\\]");
 
     /// <summary>
     /// Turns a Markdown table into a file.
@@ -130,7 +130,7 @@ public static class PlainFileExport
 
         var text = new StringBuilder();
         foreach (var fields in rows)
-            text.AppendLine(CsvWriter.ToRow(separator, fields));
+            text.Append(CsvWriter.ToRow(separator, fields)).Append(CsvWriter.ROW_END);
 
         return new(rows[0].FirstOrDefault() ?? string.Empty, FileExportFormat.CSV, SourceCodeLanguage.NONE, text.ToString());
     }

app/MindWork AI Studio/Tools/PluginSystem/Assistants/DataModel/AssistantDropdown.cs

@@ -113,7 +113,7 @@ internal sealed class AssistantDropdown : StatefulAssistantComponentBase
     public override string UserPromptFallback(AssistantState state)
     {
         if (this.IsMultiselect && state.MultiSelect.TryGetValue(this.Name, out var selections))
-            return this.BuildAuditPromptBlock(string.Join(Environment.NewLine, selections.OrderBy(static value => value, StringComparer.Ordinal)));
+            return this.BuildAuditPromptBlock(string.Join('\n', selections.OrderBy(static value => value, StringComparer.Ordinal)));
 
         state.SingleSelect.TryGetValue(this.Name, out var userInput);
         return this.BuildAuditPromptBlock(userInput);

app/MindWork AI Studio/Tools/PluginSystem/Assistants/DataModel/AssistantFileAttachments.cs

@@ -57,7 +57,7 @@ internal sealed class AssistantFileAttachment : StatefulAssistantComponentBase
         var builder = new StringBuilder();
 
         foreach (var attachment in fileState.DocumentPaths.OrderBy(static attachment => attachment.FilePath, StringComparer.Ordinal))
-            builder.AppendLine(attachment.FilePath);
+            builder.AppendLineLF(attachment.FilePath);
 
         return this.BuildAuditPromptBlock(builder.ToString());
     }

app/MindWork AI Studio/Tools/PluginSystem/Assistants/DataModel/AssistantLuaConversion.cs

@@ -282,14 +282,14 @@ internal static class AssistantLuaConversion
         var indent = new string(' ', depth * 2);
         var childIndent = new string(' ', (depth + 1) * 2);
         var builder = new System.Text.StringBuilder();
-        builder.AppendLine("{");
+        builder.AppendLineLF("{");
 
         foreach (var entry in table)
         {
             builder.Append(childIndent);
             builder.Append(FormatLuaValue(entry.Key));
             builder.Append(" = ");
-            builder.AppendLine(FormatLuaValue(entry.Value, depth + 1));
+            builder.AppendLineLF(FormatLuaValue(entry.Value, depth + 1));
         }
 
         builder.Append(indent);

app/MindWork AI Studio/Tools/PluginSystem/Assistants/DataModel/StatefulAssistantComponentBase.cs

@@ -18,13 +18,13 @@ public abstract class StatefulAssistantComponentBase : NamedAssistantComponentBa
         var builder = new StringBuilder();
         var fieldName = this.Type.ToString().ToLowerInvariant();
         
-        builder.AppendLine($"[{fieldName}]");
-        builder.Append("name: ").AppendLine(this.Name);
-        builder.AppendLine("context:");
-        builder.AppendLine(!string.IsNullOrEmpty(this.UserPrompt) ? this.UserPrompt : "<not provided>");
-        builder.AppendLine("value:");
-        builder.AppendLine(!string.IsNullOrEmpty(value) ? value : "<empty>");
-        builder.Append($"[/{fieldName}]").AppendLine().AppendLine();
+        builder.AppendLineLF($"[{fieldName}]");
+        builder.Append("name: ").AppendLineLF(this.Name);
+        builder.AppendLineLF("context:");
+        builder.AppendLineLF(!string.IsNullOrEmpty(this.UserPrompt) ? this.UserPrompt : "<not provided>");
+        builder.AppendLineLF("value:");
+        builder.AppendLineLF(!string.IsNullOrEmpty(value) ? value : "<empty>");
+        builder.Append($"[/{fieldName}]").AppendLineLF().AppendLineLF();
         return builder.ToString();
     }
 }

app/MindWork AI Studio/Tools/PluginSystem/Assistants/DirectChatLauncherLuaWriter.cs

@@ -95,71 +95,71 @@ public static class DirectChatLauncherLuaWriter
     {
         var builder = new StringBuilder();
 
-        builder.AppendLine("--[[");
-        builder.AppendLine("  This direct chat launcher is maintained by AI Studio: its settings dialog rewrites this");
-        builder.AppendLine("  file as a whole. Editing it by hand works, but the next change made through the dialog");
-        builder.AppendLine("  replaces everything below, including comments and formatting.");
-        builder.AppendLine("]]");
-        builder.AppendLine();
+        builder.AppendLineLF("--[[");
+        builder.AppendLineLF("  This direct chat launcher is maintained by AI Studio: its settings dialog rewrites this");
+        builder.AppendLineLF("  file as a whole. Editing it by hand works, but the next change made through the dialog");
+        builder.AppendLineLF("  replaces everything below, including comments and formatting.");
+        builder.AppendLineLF("]]");
+        builder.AppendLineLF();
 
-        builder.AppendLine("-- The ID for this plugin:");
-        builder.AppendLine($"ID = \"{plugin.Id}\"");
-        builder.AppendLine();
+        builder.AppendLineLF("-- The ID for this plugin:");
+        builder.AppendLineLF($"ID = \"{plugin.Id}\"");
+        builder.AppendLineLF();
 
-        builder.AppendLine("-- The name of the plugin:");
-        builder.AppendLine($"NAME = \"{Escape(definition.PluginName)}\"");
-        builder.AppendLine();
+        builder.AppendLineLF("-- The name of the plugin:");
+        builder.AppendLineLF($"NAME = \"{Escape(definition.PluginName)}\"");
+        builder.AppendLineLF();
 
-        builder.AppendLine("-- The description of the plugin:");
-        builder.AppendLine($"DESCRIPTION = \"{Escape(definition.Description)}\"");
-        builder.AppendLine();
+        builder.AppendLineLF("-- The description of the plugin:");
+        builder.AppendLineLF($"DESCRIPTION = \"{Escape(definition.Description)}\"");
+        builder.AppendLineLF();
 
-        builder.AppendLine("-- The version of the plugin:");
-        builder.AppendLine($"VERSION = \"{plugin.Version}\"");
-        builder.AppendLine();
+        builder.AppendLineLF("-- The version of the plugin:");
+        builder.AppendLineLF($"VERSION = \"{plugin.Version}\"");
+        builder.AppendLineLF();
 
         if (plugin.LastChanged is { } lastChanged)
         {
-            builder.AppendLine("-- When this plugin was last changed, in UTC, formatted as YYYY-MM-DDTHH:MM:SSZ. Optional.");
-            builder.AppendLine($"LAST_CHANGED = \"{PluginBase.FormatLastChanged(lastChanged)}\"");
-            builder.AppendLine();
+            builder.AppendLineLF("-- When this plugin was last changed, in UTC, formatted as YYYY-MM-DDTHH:MM:SSZ. Optional.");
+            builder.AppendLineLF($"LAST_CHANGED = \"{PluginBase.FormatLastChanged(lastChanged)}\"");
+            builder.AppendLineLF();
         }
 
-        builder.AppendLine("-- The type of the plugin:");
-        builder.AppendLine($"TYPE = \"{nameof(PluginType.ASSISTANT)}\"");
-        builder.AppendLine();
+        builder.AppendLineLF("-- The type of the plugin:");
+        builder.AppendLineLF($"TYPE = \"{nameof(PluginType.ASSISTANT)}\"");
+        builder.AppendLineLF();
 
-        builder.AppendLine("-- The authors of the plugin:");
-        builder.AppendLine($"AUTHORS = {WriteStringList(plugin.Authors, FALLBACK_AUTHOR)}");
-        builder.AppendLine();
+        builder.AppendLineLF("-- The authors of the plugin:");
+        builder.AppendLineLF($"AUTHORS = {WriteStringList(plugin.Authors, FALLBACK_AUTHOR)}");
+        builder.AppendLineLF();
 
-        builder.AppendLine("-- The support contact for the plugin:");
-        builder.AppendLine($"SUPPORT_CONTACT = \"{Escape(ValueOrFallback(plugin.SupportContact, FALLBACK_SUPPORT_CONTACT))}\"");
-        builder.AppendLine();
+        builder.AppendLineLF("-- The support contact for the plugin:");
+        builder.AppendLineLF($"SUPPORT_CONTACT = \"{Escape(ValueOrFallback(plugin.SupportContact, FALLBACK_SUPPORT_CONTACT))}\"");
+        builder.AppendLineLF();
 
-        builder.AppendLine("-- The source URL for the plugin:");
-        builder.AppendLine($"SOURCE_URL = \"{Escape(ValueOrFallback(plugin.SourceURL, FALLBACK_SOURCE_URL))}\"");
-        builder.AppendLine();
+        builder.AppendLineLF("-- The source URL for the plugin:");
+        builder.AppendLineLF($"SOURCE_URL = \"{Escape(ValueOrFallback(plugin.SourceURL, FALLBACK_SOURCE_URL))}\"");
+        builder.AppendLineLF();
 
-        builder.AppendLine("-- The categories for the plugin:");
-        builder.AppendLine($"CATEGORIES = {WriteEnumList(plugin.Categories, FALLBACK_CATEGORY)}");
-        builder.AppendLine();
+        builder.AppendLineLF("-- The categories for the plugin:");
+        builder.AppendLineLF($"CATEGORIES = {WriteEnumList(plugin.Categories, FALLBACK_CATEGORY)}");
+        builder.AppendLineLF();
 
-        builder.AppendLine("-- The target groups for the plugin:");
-        builder.AppendLine($"TARGET_GROUPS = {WriteEnumList(plugin.TargetGroups, FALLBACK_TARGET_GROUP)}");
-        builder.AppendLine();
+        builder.AppendLineLF("-- The target groups for the plugin:");
+        builder.AppendLineLF($"TARGET_GROUPS = {WriteEnumList(plugin.TargetGroups, FALLBACK_TARGET_GROUP)}");
+        builder.AppendLineLF();
 
-        builder.AppendLine("-- The flag for whether the plugin is maintained:");
-        builder.AppendLine($"IS_MAINTAINED = {WriteBoolean(plugin.IsMaintained)}");
-        builder.AppendLine();
+        builder.AppendLineLF("-- The flag for whether the plugin is maintained:");
+        builder.AppendLineLF($"IS_MAINTAINED = {WriteBoolean(plugin.IsMaintained)}");
+        builder.AppendLineLF();
 
-        builder.AppendLine("-- When the plugin is deprecated, this message will be shown to users:");
-        builder.AppendLine($"DEPRECATION_MESSAGE = \"{Escape(plugin.DeprecationMessage)}\"");
-        builder.AppendLine();
+        builder.AppendLineLF("-- When the plugin is deprecated, this message will be shown to users:");
+        builder.AppendLineLF($"DEPRECATION_MESSAGE = \"{Escape(plugin.DeprecationMessage)}\"");
+        builder.AppendLineLF();
 
-        builder.AppendLine("-- Enterprise-managed assistants cannot be revised with AI. Keep false for locally managed plugins:");
-        builder.AppendLine("DEPLOYED_USING_CONFIG_SERVER = false");
-        builder.AppendLine();
+        builder.AppendLineLF("-- Enterprise-managed assistants cannot be revised with AI. Keep false for locally managed plugins:");
+        builder.AppendLineLF("DEPLOYED_USING_CONFIG_SERVER = false");
+        builder.AppendLineLF();
 
         //
         // This metadata marks assistants the Builder created and must not appear on manually
@@ -167,26 +167,26 @@ public static class DirectChatLauncherLuaWriter
         //
         if (plugin.IsAssistantBuilderGenerated)
         {
-            builder.AppendLine("-- This assistant was created by the AI Studio Assistant Builder:");
-            builder.AppendLine("AI_STUDIO_ASSISTANT_BUILDER = {Generated = true, SchemaVersion = 1}");
-            builder.AppendLine();
+            builder.AppendLineLF("-- This assistant was created by the AI Studio Assistant Builder:");
+            builder.AppendLineLF("AI_STUDIO_ASSISTANT_BUILDER = {Generated = true, SchemaVersion = 1}");
+            builder.AppendLineLF();
         }
 
-        builder.AppendLine("-- The tile opens a chat directly, hence it needs no system prompt, no submit text, and no UI:");
-        builder.AppendLine("ASSISTANT = {");
-        builder.AppendLine($"    [\"Title\"] = \"{Escape(definition.Title)}\",");
-        builder.AppendLine($"    [\"Description\"] = \"{Escape(definition.Description)}\",");
+        builder.AppendLineLF("-- The tile opens a chat directly, hence it needs no system prompt, no submit text, and no UI:");
+        builder.AppendLineLF("ASSISTANT = {");
+        builder.AppendLineLF($"    [\"Title\"] = \"{Escape(definition.Title)}\",");
+        builder.AppendLineLF($"    [\"Description\"] = \"{Escape(definition.Description)}\",");
         //
         // The behavior follows from the workspace rather than being tracked next to it. A launcher
         // without one has no name to write, and the plugin loader rejects a WorkspaceName there, so
         // the field is left out the same way the optional IDs below are:
         //
         if (definition.Launch.OpensTemporaryChat)
-            builder.AppendLine($"    [\"LaunchBehavior\"] = \"{nameof(AssistantPluginLaunchBehavior.OPEN_TEMPORARY_CHAT)}\",");
+            builder.AppendLineLF($"    [\"LaunchBehavior\"] = \"{nameof(AssistantPluginLaunchBehavior.OPEN_TEMPORARY_CHAT)}\",");
         else
         {
-            builder.AppendLine($"    [\"LaunchBehavior\"] = \"{nameof(AssistantPluginLaunchBehavior.OPEN_WORKSPACE_CHAT_BY_NAME)}\",");
-            builder.AppendLine($"    [\"WorkspaceName\"] = \"{Escape(definition.Launch.WorkspaceName.Trim())}\",");
+            builder.AppendLineLF($"    [\"LaunchBehavior\"] = \"{nameof(AssistantPluginLaunchBehavior.OPEN_WORKSPACE_CHAT_BY_NAME)}\",");
+            builder.AppendLineLF($"    [\"WorkspaceName\"] = \"{Escape(definition.Launch.WorkspaceName.Trim())}\",");
         }
 
         //
@@ -194,30 +194,30 @@ public static class DirectChatLauncherLuaWriter
         // profile or no chat template. An empty provider GUID has no such meaning and is invalid:
         //
         if (definition.Launch.ProviderId is { } providerId && providerId != Guid.Empty)
-            builder.AppendLine($"    [\"ProviderId\"] = \"{providerId}\",");
+            builder.AppendLineLF($"    [\"ProviderId\"] = \"{providerId}\",");
 
         if (definition.Launch.ProfileId is { } profileId)
-            builder.AppendLine($"    [\"ProfileId\"] = \"{profileId}\",");
+            builder.AppendLineLF($"    [\"ProfileId\"] = \"{profileId}\",");
 
         if (definition.Launch.ChatTemplateId is { } chatTemplateId)
-            builder.AppendLine($"    [\"ChatTemplateId\"] = \"{chatTemplateId}\",");
+            builder.AppendLineLF($"    [\"ChatTemplateId\"] = \"{chatTemplateId}\",");
 
         if (definition.Launch.DataSourceIds is { Count: > 0 } dataSourceIds)
         {
-            builder.AppendLine("    [\"DataSourceIds\"] = {");
+            builder.AppendLineLF("    [\"DataSourceIds\"] = {");
             foreach (var dataSourceId in dataSourceIds)
-                builder.AppendLine($"        \"{dataSourceId}\",");
+                builder.AppendLineLF($"        \"{dataSourceId}\",");
 
-            builder.AppendLine("    },");
+            builder.AppendLineLF("    },");
         }
 
         if (definition.Launch.ToolIds is { Count: > 0 } toolIds)
         {
-            builder.AppendLine("    [\"ToolIds\"] = {");
+            builder.AppendLineLF("    [\"ToolIds\"] = {");
             foreach (var toolId in toolIds)
-                builder.AppendLine($"        {LuaTools.ToLuaStringLiteral(toolId)},");
+                builder.AppendLineLF($"        {LuaTools.ToLuaStringLiteral(toolId)},");
 
-            builder.AppendLine("    },");
+            builder.AppendLineLF("    },");
         }
 
         builder.Append('}');

app/MindWork AI Studio/Tools/PluginSystem/Assistants/PluginAssistants.cs

@@ -574,7 +574,7 @@ public sealed class PluginAssistants(bool isInternal, LuaState state, PluginType
 
     private static string BuildSecureSystemPrompt(string pluginSystemPrompt)
     {
-        var separator = $"{Environment.NewLine}{Environment.NewLine}";
+        var separator = "\n\n";
         return string.IsNullOrWhiteSpace(pluginSystemPrompt) ? $"{SECURITY_SYSTEM_PROMPT_PREAMBLE}{separator}{SECURITY_SYSTEM_PROMPT_POSTAMBLE}" : $"{SECURITY_SYSTEM_PROMPT_PREAMBLE}{separator}{pluginSystemPrompt.Trim()}{separator}{SECURITY_SYSTEM_PROMPT_POSTAMBLE}";
     }
 
@@ -939,7 +939,7 @@ public sealed class PluginAssistants(bool isInternal, LuaState state, PluginType
                 builder.Append(string.IsNullOrWhiteSpace(stateful.UserPrompt) ? "empty" : "set");
             }
 
-            builder.AppendLine();
+            builder.AppendLineLF();
 
             if (component.Children.Count > 0)
                 AppendComponentSummary(builder, component.Children, depth + 1);

app/MindWork AI Studio/Tools/RAG/AugmentationProcesses/AugmentationOne.cs

@@ -138,8 +138,8 @@ public sealed class AugmentationOne : IAugmentationProcess
         var sb = new StringBuilder();
         if (selection.Contexts.Count > 0)
         {
-            sb.AppendLine("The following useful information will help you in processing the user prompt:");
-            sb.AppendLine();
+            sb.AppendLineLF("The following useful information will help you in processing the user prompt:");
+            sb.AppendLineLF();
 
             // Let's convert the retrieval contexts to Markdown:
             for (var index = 0; index < selection.Contexts.Count; index++)
@@ -147,7 +147,7 @@ public sealed class AugmentationOne : IAugmentationProcess
         }
 
         if (selection.LeftOutCount > 0)
-            sb.AppendLine(selection.LeftOutCount is 1
+            sb.AppendLineLF(selection.LeftOutCount is 1
                 ? "Of the passages which the search found in the data sources, 1 did not fit into this request and was left out. An answer based on the data sources may therefore be incomplete."
                 : $"Of the passages which the search found in the data sources, {selection.LeftOutCount} did not fit into this request and were left out. An answer based on the data sources may therefore be incomplete.");
 

app/MindWork AI Studio/Tools/RAG/PreparedRetrievalContext.cs

@@ -29,20 +29,20 @@ public sealed record PreparedRetrievalContext(IRetrievalContext Context, string
         switch (index)
         {
             case > 0 when numTotalRetrievalContexts is null:
-                sb.AppendLine($"# Retrieval context {index}");
+                sb.AppendLineLF($"# Retrieval context {index}");
                 break;
 
             case > 0 when numTotalRetrievalContexts > 0:
-                sb.AppendLine($"# Retrieval context {index} of {numTotalRetrievalContexts}");
+                sb.AppendLineLF($"# Retrieval context {index} of {numTotalRetrievalContexts}");
                 break;
 
             default:
-                sb.AppendLine("# Retrieval context");
+                sb.AppendLineLF("# Retrieval context");
                 break;
         }
 
         sb.Append(this.Body);
-        sb.AppendLine();
+        sb.AppendLineLF();
         return sb.ToString();
     }
 }

app/MindWork AI Studio/Tools/RAG/RAGProcesses/AISrcSelWithRetCtxVal.cs

@@ -330,7 +330,7 @@ public sealed class AISrcSelWithRetCtxVal : IRagProcess
 
         var builder = new StringBuilder(augmentedData);
         if (builder.Length > 0)
-            builder.AppendLine();
+            builder.AppendLineLF();
 
         UnreachableDataSources.AppendTo(builder, unreachableDataSources);
         return builder.ToString();

app/MindWork AI Studio/Tools/RAG/RetrievalContextExtensions.cs

@@ -23,23 +23,23 @@ public static class RetrievalContextExtensions
     /// <param name="retrievalContext">The context to describe.</param>
     internal static void AppendContextDescription(StringBuilder contextBuilder, IRetrievalContext retrievalContext)
     {
-        contextBuilder.AppendLine($"Data source name: {retrievalContext.DataSourceName}");
-        contextBuilder.AppendLine($"Content category: {retrievalContext.Category}");
+        contextBuilder.AppendLineLF($"Data source name: {retrievalContext.DataSourceName}");
+        contextBuilder.AppendLineLF($"Content category: {retrievalContext.Category}");
         if(!string.IsNullOrWhiteSpace(retrievalContext.SourceCategory))
-            contextBuilder.AppendLine($"Source category: {retrievalContext.SourceCategory.ReplaceLineEndings(" ").Trim()}");
+            contextBuilder.AppendLineLF($"Source category: {retrievalContext.SourceCategory.ReplaceLineEndings(" ").Trim()}");
 
-        contextBuilder.AppendLine($"Content type: {retrievalContext.Type}");
-        contextBuilder.AppendLine($"Content path: {retrievalContext.Path}");
+        contextBuilder.AppendLineLF($"Content type: {retrievalContext.Type}");
+        contextBuilder.AppendLineLF($"Content path: {retrievalContext.Path}");
 
         if(retrievalContext is RetrievalTextContext textContext && DescribeLocation(textContext.PageNumber, textContext.EndPageNumber, textContext.SheetName, textContext.StartRow, textContext.EndRow, textContext.StartLine, textContext.EndLine) is { } location)
-            contextBuilder.AppendLine($"Content location: {location}");
+            contextBuilder.AppendLineLF($"Content location: {location}");
 
         if(retrievalContext.Links.Count is 0)
             return;
 
-        contextBuilder.AppendLine("Additional links:");
+        contextBuilder.AppendLineLF("Additional links:");
         foreach(var link in retrievalContext.Links)
-            contextBuilder.AppendLine($"- {link}");
+            contextBuilder.AppendLineLF($"- {link}");
     }
 
     /// <summary>
@@ -86,8 +86,8 @@ public static class RetrievalContextExtensions
     /// <param name="contextBuilder">The builder to write into, after the description of the context.</param>
     internal static void AppendImageMatch(StringBuilder contextBuilder)
     {
-        contextBuilder.AppendLine();
-        contextBuilder.AppendLine("Matched image content: an image matched here, but it is not shown to you. Do not guess what it shows. When it matters for the answer, tell the user that an image matched, and where to find it, using the path and the links above.");
+        contextBuilder.AppendLineLF();
+        contextBuilder.AppendLineLF("Matched image content: an image matched here, but it is not shown to you. Do not guess what it shows. When it matters for the answer, tell the user that an image matched, and where to find it, using the path and the links above.");
     }
 
     /// <param name="retrievalContexts">The contexts to prepare.</param>
@@ -295,31 +295,31 @@ public static class RetrievalContextExtensions
     /// <param name="surroundingContent">The surrounding content, filtered.</param>
     private static void AppendTextMatch(StringBuilder contextBuilder, RetrievalTextContext textContext, string matchedText, IReadOnlyList<string> surroundingContent)
     {
-        contextBuilder.AppendLine();
-        contextBuilder.AppendLine(textContext.IsMatchedTextShortened ? "Matched text content, shortened to fit the size limit:" : "Matched text content:");
-        contextBuilder.AppendLine("````");
-        contextBuilder.AppendLine(matchedText);
-        contextBuilder.AppendLine("````");
+        contextBuilder.AppendLineLF();
+        contextBuilder.AppendLineLF(textContext.IsMatchedTextShortened ? "Matched text content, shortened to fit the size limit:" : "Matched text content:");
+        contextBuilder.AppendLineLF("````");
+        contextBuilder.AppendLineLF(matchedText);
+        contextBuilder.AppendLineLF("````");
 
         if (surroundingContent.Count is 0)
         {
             if (textContext.IsSurroundingContentShortened)
             {
-                contextBuilder.AppendLine();
-                contextBuilder.AppendLine("Surrounding text content: left out to fit the size limit.");
+                contextBuilder.AppendLineLF();
+                contextBuilder.AppendLineLF("Surrounding text content: left out to fit the size limit.");
             }
 
             return;
         }
 
-        contextBuilder.AppendLine();
-        contextBuilder.AppendLine(textContext.IsSurroundingContentShortened ? "Surrounding text content, shortened to fit the size limit:" : "Surrounding text content:");
+        contextBuilder.AppendLineLF();
+        contextBuilder.AppendLineLF(textContext.IsSurroundingContentShortened ? "Surrounding text content, shortened to fit the size limit:" : "Surrounding text content:");
         foreach (var surrounding in surroundingContent)
         {
-            contextBuilder.AppendLine();
-            contextBuilder.AppendLine("````");
-            contextBuilder.AppendLine(surrounding);
-            contextBuilder.AppendLine("````");
+            contextBuilder.AppendLineLF();
+            contextBuilder.AppendLineLF("````");
+            contextBuilder.AppendLineLF(surrounding);
+            contextBuilder.AppendLineLF("````");
         }
     }
 

app/MindWork AI Studio/Tools/RAG/UnreachableDataSources.cs

@@ -26,8 +26,8 @@ public static class UnreachableDataSources
     /// <param name="dataSources">The data sources whose server could not be reached, in the order to list them.</param>
     public static void AppendTo(StringBuilder builder, IReadOnlyList<IDataSource> dataSources)
     {
-        builder.AppendLine("These external data sources of this chat could not be reached or signed in to right now, so they cannot be searched. Their content is missing rather than empty; tell the user so when a question concerns them:");
+        builder.AppendLineLF("These external data sources of this chat could not be reached or signed in to right now, so they cannot be searched. Their content is missing rather than empty; tell the user so when a question concerns them:");
         foreach (var dataSource in dataSources)
-            builder.AppendLine($"- name='{dataSource.Name}'");
+            builder.AppendLineLF($"- name='{dataSource.Name}'");
     }
 }

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

@@ -261,24 +261,24 @@ public sealed class AssistantPluginGenerationService(ToolRegistry toolRegistry,
                 continue;
             }
 
-            builder.AppendLine($"# {contextFile.Title}");
-            builder.AppendLine($"Source: {contextFile.RelativePath}");
-            builder.AppendLine("<context>");
-            builder.AppendLine(content.Trim());
-            builder.AppendLine("</context>");
-            builder.AppendLine();
+            builder.AppendLineLF($"# {contextFile.Title}");
+            builder.AppendLineLF($"Source: {contextFile.RelativePath}");
+            builder.AppendLineLF("<context>");
+            builder.AppendLineLF(content.Trim());
+            builder.AppendLineLF("</context>");
+            builder.AppendLineLF();
         }
 
         //
         // Unlike the files above, this list is not the same on two installations. It is the only
         // place the model learns which tool IDs exist, so an assistant cannot name a tool without it:
         //
-        builder.AppendLine("# Available tools");
-        builder.AppendLine("Source: the tools installed in this AI Studio");
-        builder.AppendLine("<context>");
-        builder.AppendLine(await this.FormatAvailableToolsAsync());
-        builder.AppendLine("</context>");
-        builder.AppendLine();
+        builder.AppendLineLF("# Available tools");
+        builder.AppendLineLF("Source: the tools installed in this AI Studio");
+        builder.AppendLineLF("<context>");
+        builder.AppendLineLF(await this.FormatAvailableToolsAsync());
+        builder.AppendLineLF("</context>");
+        builder.AppendLineLF();
 
         return builder.ToString().Trim();
     }
@@ -302,7 +302,7 @@ public sealed class AssistantPluginGenerationService(ToolRegistry toolRegistry,
 
         var builder = new StringBuilder();
         foreach (var tool in activeTools)
-            builder.AppendLine($"- {tool.Id}: {tool.DescriptionForLLM}");
+            builder.AppendLineLF($"- {tool.Id}: {tool.DescriptionForLLM}");
 
         return builder.ToString().TrimEnd();
     }
@@ -729,11 +729,11 @@ public sealed class AssistantPluginGenerationService(ToolRegistry toolRegistry,
         var builder = new StringBuilder();
         foreach (var (relativePath, content) in luaFiles)
         {
-            builder.AppendLine($"# {relativePath}");
-            builder.AppendLine("```lua");
-            builder.AppendLine(content.Trim());
-            builder.AppendLine("```");
-            builder.AppendLine();
+            builder.AppendLineLF($"# {relativePath}");
+            builder.AppendLineLF("```lua");
+            builder.AppendLineLF(content.Trim());
+            builder.AppendLineLF("```");
+            builder.AppendLineLF();
         }
 
         return builder.ToString().Trim();

app/MindWork AI Studio/Tools/Services/RustService.Retrieval.cs

@@ -304,7 +304,7 @@ public sealed partial class RustService
         if (content.Length >= maxCharacters)
             return string.IsNullOrWhiteSpace(piece);
 
-        content.AppendLine(piece);
+        content.AppendLineLF(piece);
         return true;
     }
 

app/MindWork AI Studio/Tools/SlideManager.cs

@@ -28,12 +28,12 @@ public sealed class SlideManager
             //
             
             var contentBuilder = new StringBuilder();
-            contentBuilder.AppendLine();
-            contentBuilder.AppendLine($"# Slide {slideNumber}");
+            contentBuilder.AppendLineLF();
+            contentBuilder.AppendLineLF($"# Slide {slideNumber}");
             
             // Add any text content to the slide?
             if(!string.IsNullOrWhiteSpace(content))
-                contentBuilder.AppendLine(content);
+                contentBuilder.AppendLineLF(content);
 
             //
             // Add the text content to the slide:
@@ -78,7 +78,7 @@ public sealed class SlideManager
             if (!string.IsNullOrWhiteSpace(content))
             {
                 var textContent = slide.Content.OfType<SlideTextContent>().First();
-                textContent.Text.AppendLine(content);
+                textContent.Text.AppendLineLF(content);
                 slide.TokenCount = ContentStreamPendingContent.AddTokenCounts(slide.TokenCount, tokenCount);
             }
 
@@ -112,14 +112,14 @@ public sealed class SlideManager
 
             foreach (var text in slide.Content.OfType<SlideTextContent>())
             {
-                content.AppendLine(text.Text.ToString());
-                content.AppendLine();
+                content.AppendLineLF(text.Text.ToString());
+                content.AppendLineLF();
             }
 
             foreach (var image in slide.Content.OfType<SlideImageContent>())
             {
-                content.AppendLine(image.MarkdownImage);
-                content.AppendLine();
+                content.AppendLineLF(image.MarkdownImage);
+                content.AppendLineLF();
             }
         }
 

app/MindWork AI Studio/Tools/SourceExtensions.cs

@@ -226,10 +226,10 @@ public static partial class SourceExtensions
             foreach (var group in sources.GroupSources())
             {
                 if (sb.Length > 0)
-                    sb.AppendLine();
+                    sb.AppendLineLF();
 
                 sb.Append("## ");
-                sb.AppendLine(group.Heading);
+                sb.AppendLineLF(group.Heading);
 
                 foreach (var numberedSource in group.Sources)
                 {
@@ -241,7 +241,7 @@ public static partial class SourceExtensions
                     else
                         AppendMarkdownLink(sb, numberedSource.Source.Title, keepPageAnchors ? numberedSource.Source.URL : WithoutPageAnchor(numberedSource.Source.URL));
 
-                    sb.AppendLine();
+                    sb.AppendLineLF();
                 }
             }
 
@@ -265,7 +265,7 @@ public static partial class SourceExtensions
             if (string.IsNullOrWhiteSpace(sourcesMarkdown))
                 return string.Empty;
 
-            return $"# {TB("Sources")}{Environment.NewLine}{Environment.NewLine}{sourcesMarkdown}";
+            return $"# {TB("Sources")}\n\n{sourcesMarkdown}";
         }
 
         /// <summary>

app/MindWork AI Studio/Tools/ToolCallingSystem/ToolCallingImplementations/Mailboxes/CountMailsTool.cs

@@ -89,11 +89,11 @@ public sealed class CountMailsTool(SettingsManager settingsManager, MailboxRetri
     internal static ToolFunctionDefinition DescribeMailboxes(ToolFunctionDefinition function, IReadOnlyList<DataSourceMailbox> mailboxes)
     {
         var description = new StringBuilder(DESCRIPTION);
-        description.AppendLine();
-        description.AppendLine();
-        description.AppendLine($"The mailboxes you may count, by the ID to pass in {MailToolArguments.MAILBOX_IDS_ARGUMENT}:");
+        description.AppendLineLF();
+        description.AppendLineLF();
+        description.AppendLineLF($"The mailboxes you may count, by the ID to pass in {MailToolArguments.MAILBOX_IDS_ARGUMENT}:");
         foreach (var mailbox in mailboxes)
-            description.AppendLine($"- id={mailbox.Id}, name='{mailbox.Name}'");
+            description.AppendLineLF($"- id={mailbox.Id}, name='{mailbox.Name}'");
 
         return function with
         {

app/MindWork AI Studio/Tools/ToolCallingSystem/ToolCallingImplementations/Mailboxes/MailToolResults.cs

@@ -54,9 +54,9 @@ internal static class MailToolResults
 
         if (!string.IsNullOrWhiteSpace(text))
         {
-            builder.AppendLine();
-            builder.AppendLine("---");
-            builder.AppendLine();
+            builder.AppendLineLF();
+            builder.AppendLineLF("---");
+            builder.AppendLineLF();
             builder.Append(text);
         }
 
@@ -65,7 +65,7 @@ internal static class MailToolResults
         void AppendField(string label, string? value)
         {
             if (!string.IsNullOrWhiteSpace(value))
-                builder.AppendLine($"- **{label}:** {value}");
+                builder.AppendLineLF($"- **{label}:** {value}");
         }
     }
 

app/MindWork AI Studio/Tools/ToolCallingSystem/ToolCallingImplementations/Mailboxes/SearchMailsTool.cs

@@ -135,11 +135,11 @@ public sealed class SearchMailsTool(SettingsManager settingsManager, MailboxRetr
     internal static ToolFunctionDefinition DescribeMailboxes(ToolFunctionDefinition function, IReadOnlyList<DataSourceMailbox> mailboxes)
     {
         var description = new StringBuilder(DESCRIPTION);
-        description.AppendLine();
-        description.AppendLine();
-        description.AppendLine($"The mailboxes you may search, by the ID to pass in {MailToolArguments.MAILBOX_IDS_ARGUMENT}:");
+        description.AppendLineLF();
+        description.AppendLineLF();
+        description.AppendLineLF($"The mailboxes you may search, by the ID to pass in {MailToolArguments.MAILBOX_IDS_ARGUMENT}:");
         foreach (var mailbox in mailboxes)
-            description.AppendLine($"- id={mailbox.Id}, name='{mailbox.Name}'");
+            description.AppendLineLF($"- id={mailbox.Id}, name='{mailbox.Name}'");
 
         return function with
         {

app/MindWork AI Studio/Tools/ToolCallingSystem/ToolCallingImplementations/SemanticSearch/SemanticSearchTool.cs

@@ -286,21 +286,21 @@ public sealed class SemanticSearchTool(SettingsManager settingsManager, DataSour
     internal static ToolFunctionDefinition DescribeDataSources(ToolFunctionDefinition function, IReadOnlyList<(IDataSource DataSource, string Description)> dataSources, IReadOnlyList<IDataSource>? unreachableDataSources = null)
     {
         var description = new StringBuilder(DESCRIPTION);
-        description.AppendLine();
-        description.AppendLine();
-        description.AppendLine($"The data sources you may search, by the ID to pass in {DATA_SOURCE_IDS_ARGUMENT}:");
+        description.AppendLineLF();
+        description.AppendLineLF();
+        description.AppendLineLF($"The data sources you may search, by the ID to pass in {DATA_SOURCE_IDS_ARGUMENT}:");
         foreach (var (dataSource, dataSourceDescription) in dataSources)
         {
             description.Append($"- id={dataSource.Id}, name='{dataSource.Name}', type={GetKind(dataSource)}");
             if (!string.IsNullOrWhiteSpace(dataSourceDescription))
                 description.Append($", description='{dataSourceDescription.Trim().Shorten(MAX_DESCRIPTION_CHARACTERS)}'");
 
-            description.AppendLine();
+            description.AppendLineLF();
         }
 
         if (unreachableDataSources is { Count: > 0 })
         {
-            description.AppendLine();
+            description.AppendLineLF();
             UnreachableDataSources.AppendTo(description, unreachableDataSources);
         }
 

app/MindWork AI Studio/Tools/ToolCallingSystem/ToolSelectionRules.cs

@@ -50,7 +50,7 @@ public static class ToolSelectionRules
     public static string BuildToolPolicyPrompt(IEnumerable<ToolDefinition> definitions)
     {
         var policySections = GetInstructedTools(definitions)
-            .Select(x => $"## Tool `{x.Function.Name}`{Environment.NewLine}{x.SystemPromptInstructions.Trim()}")
+            .Select(x => $"## Tool `{x.Function.Name}`\n{x.SystemPromptInstructions.Trim()}")
             .Distinct(StringComparer.Ordinal)
             .ToList();
         if (policySections.Count == 0)
@@ -60,7 +60,7 @@ public static class ToolSelectionRules
                             # Tool usage instructions:
                             You have multiple tools available. Each tool has a different purpose and usage policy. Choose wisely and if you are not sure, always ask the user for clarification. You must follow the usage policy of each tool to ensure accurate and reliable results. Here are the usage policies for each tool:
 
-                            {string.Join(Environment.NewLine+Environment.NewLine, policySections)}
+                            {string.Join("\n\n", policySections)}
                             """;
 
         return toolPolicyPrompt;

app/MindWork AI Studio/Tools/ToolCallingSystem/ToolSettingsService.Export.cs

@@ -159,7 +159,7 @@ public sealed partial class ToolSettingsService
             // dictionary rather than this tool's entry. A comment says the same thing without
             // overwriting anything:
             //
-            lua.AppendLine($"-- The whole table is locked unless you set CONFIG[\"SETTINGS\"][\"{MINIMUM_CONFIDENCE}.AllowUserOverride\"] = true");
+            lua.AppendLineLF($"-- The whole table is locked unless you set CONFIG[\"SETTINGS\"][\"{MINIMUM_CONFIDENCE}.AllowUserOverride\"] = true");
         }
 
         return new(LuaCode: lua.ToString());
@@ -177,9 +177,9 @@ public sealed partial class ToolSettingsService
 
         var table = $"CONFIG[\"SETTINGS\"][\"{settingName}\"]";
         if (lua.Length > 0)
-            lua.AppendLine();
-        lua.AppendLine($"{table} = {table} or {{}}");
+            lua.AppendLineLF();
+        lua.AppendLineLF($"{table} = {table} or {{}}");
         foreach (var (key, value) in values)
-            lua.AppendLine($"{table}[\"{LuaTools.EscapeLuaString(key)}\"] = \"{LuaTools.EscapeLuaString(value)}\"");
+            lua.AppendLineLF($"{table}[\"{LuaTools.EscapeLuaString(key)}\"] = \"{LuaTools.EscapeLuaString(value)}\"");
     }
 }