search and ai stabilization work, localization stablized.

src/__Libraries/StellaOps.Provcache/VeriKeyBuilder.TimeWindow.cs

@@ -1,4 +1,5 @@
 using System;
+using static StellaOps.Localization.T;
 
 namespace StellaOps.Provcache;
 
@@ -12,7 +13,7 @@ public sealed partial class VeriKeyBuilder
     public VeriKeyBuilder WithTimeWindow(string timeWindow)
     {
         if (string.IsNullOrWhiteSpace(timeWindow))
-            throw new ArgumentException("Time window cannot be null or empty.", nameof(timeWindow));
+            throw new ArgumentException(_t("common.provcache.time_window_required"), nameof(timeWindow));
 
         _timeWindow = timeWindow;
         return this;