search and ai stabilization work, localization stablized.

src/__Libraries/StellaOps.Auth.Security/Dpop/DpopProofValidator.Helpers.cs

@@ -1,5 +1,6 @@
 using Microsoft.IdentityModel.Tokens;
 using System.Text.Json;
+using static StellaOps.Localization.T;
 
 namespace StellaOps.Auth.Security.Dpop;
 
@@ -27,13 +28,13 @@ public sealed partial class DpopProofValidator
         var segments = token.Split('.');
         if (segments.Length != 3)
         {
-            error = "Token must contain three segments.";
+            error = _t("auth.dpop.token_three_segments");
             return false;
         }
 
         if (segmentIndex < 0 || segmentIndex > 2)
         {
-            error = "Segment index out of range.";
+            error = _t("auth.dpop.segment_out_of_range");
             return false;
         }