Get similar work orders before wo creation.

Author: hchen2020

src/Plugins/BotSharp.Plugin.KnowledgeBase/MemVecDb/VecRecord.cs

@@ -5,4 +5,9 @@ public class VecRecord
     public int Id { get; set; }
     public float[] Vector { get; set; }
     public string Text { get; set; }
+
+    public override string ToString()
+    {
+        return Text;
+    }
 }