Added a semantic search tool (#1005)

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

@@ -0,0 +1,48 @@
+namespace AIStudio.Tools.ToolCallingSystem;
+
+/// <summary>
+/// What keeps a tool from being offered to a model, if anything.
+/// </summary>
+/// <remarks>
+/// A reason rather than a yes or no, because whoever asks has to say something different for each
+/// of them: a model which cannot use tools is a matter of the provider settings, a tool switched off
+/// by the organization is nothing the user can change, and missing settings are something they can
+/// fill in themselves.
+/// </remarks>
+public enum ToolOfferBlockReason
+{
+    /// <summary>
+    /// Nothing is in the way, the tool can be offered.
+    /// </summary>
+    NONE,
+
+    /// <summary>
+    /// The organization switched tools off altogether.
+    /// </summary>
+    TOOLS_SWITCHED_OFF,
+
+    /// <summary>
+    /// The selected model or its provider cannot use tools, or no provider is selected at all.
+    /// </summary>
+    MODEL_CANNOT_USE_TOOLS,
+
+    /// <summary>
+    /// This installation does not know the tool, or the tool is not meant for this part of the app.
+    /// </summary>
+    NOT_AVAILABLE_HERE,
+
+    /// <summary>
+    /// The organization switched this tool off.
+    /// </summary>
+    TOOL_SWITCHED_OFF,
+
+    /// <summary>
+    /// A setting the tool cannot work without is missing or invalid.
+    /// </summary>
+    NOT_CONFIGURED,
+
+    /// <summary>
+    /// The provider is not trusted enough for this tool.
+    /// </summary>
+    PROVIDER_CONFIDENCE_TOO_LOW,
+}