Added a semantic search tool (#1005)

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

@@ -1,3 +1,4 @@
+using AIStudio.Chat;
 using AIStudio.Provider;
 using AIStudio.Settings;
 
@@ -7,6 +8,26 @@ public sealed class ToolExecutionContext
 {
     public required ToolDefinition Definition { get; init; }
 
+    /// <summary>
+    /// The chat the call was made in.
+    /// </summary>
+    /// <remarks>
+    /// For a tool which works with what the chat was set up with, such as Semantic Search with the
+    /// data sources the user picked for it. A tool reads it; what the chat has to keep because of
+    /// the result goes back through the ToolExecutionResult instead.
+    /// </remarks>
+    public required ChatThread ChatThread { get; init; }
+
+    /// <summary>
+    /// The provider the call came from.
+    /// </summary>
+    /// <remarks>
+    /// For a tool which checks more than the confidence of the provider, such as Semantic Search:
+    /// before it searches, it asks again which data sources this provider may search, because
+    /// rounds may have passed since they were offered.
+    /// </remarks>
+    public required IProvider Provider { get; init; }
+
     public string ToolCallId { get; init; } = string.Empty;
 
     public required SettingsManager SettingsManager { get; init; }