Add Outlook mail tool

app/MindWork AI Studio/Tools/Security/PromptInjectionSource.cs

@@ -13,4 +13,6 @@ public readonly record struct PromptInjectionSource(PromptInjectionSourceKind Ki
     public static PromptInjectionSource ChatAttachment(string filePath) => new(PromptInjectionSourceKind.CHAT_ATTACHMENT, filePath);
 
     public static PromptInjectionSource RetrievalContext(string dataSourceName, string path) => new(PromptInjectionSourceKind.RETRIEVAL_CONTEXT, $"{dataSourceName}: {path}");
-}
+
+    public static PromptInjectionSource MailContent() => new(PromptInjectionSourceKind.MAIL_CONTENT, "Outlook Mail");
+}