search and ai stabilization work, localization stablized.

src/__Libraries/StellaOps.Configuration/AuthorityEscalationOptions.cs

@@ -1,4 +1,5 @@
 using System;
+using static StellaOps.Localization.T;
 
 namespace StellaOps.Configuration;
 
@@ -21,7 +22,7 @@ public sealed class AuthorityEscalationOptions
     {
         if (string.IsNullOrWhiteSpace(Scope))
         {
-            throw new InvalidOperationException("notifications.escalation.scope must be specified.");
+            throw new InvalidOperationException(_t("config.escalation.scope_required"));
         }
 
         Scope = Scope.Trim().ToLowerInvariant();