Refactor and update test projects, remove obsolete tests, and upgrade dependencies

- Deleted obsolete test files for SchedulerAuditService and SchedulerMongoSessionFactory.
- Removed unused TestDataFactory class.
- Updated project files for Mongo.Tests to remove references to deleted files.
- Upgraded BouncyCastle.Cryptography package to version 2.6.2 across multiple projects.
- Replaced Microsoft.Extensions.Http.Polly with Microsoft.Extensions.Http.Resilience in Zastava.Webhook project.
- Updated NetEscapades.Configuration.Yaml package to version 3.1.0 in Configuration library.
- Upgraded Pkcs11Interop package to version 5.1.2 in Cryptography libraries.
- Refactored Argon2idPasswordHasher to use BouncyCastle for hashing instead of Konscious.
- Updated JsonSchema.Net package to version 7.3.2 in Microservice project.
- Updated global.json to use .NET SDK version 10.0.101.

src/Excititor/StellaOps.Excititor.WebService/Program.Helpers.cs

@@ -15,7 +15,7 @@ public partial class Program
 {
     private const string TenantHeaderName = "X-Stella-Tenant";
 
-    private static bool TryResolveTenant(HttpContext context, VexStorageOptions options, bool requireHeader, out string tenant, out IResult? problem)
+    internal static bool TryResolveTenant(HttpContext context, VexStorageOptions options, bool requireHeader, out string tenant, out IResult? problem)
     {
         tenant = options.DefaultTenant;
         problem = null;
@@ -149,7 +149,7 @@ public partial class Program
         return builder.ToImmutable();
     }
 
-    private static DateTimeOffset? ParseSinceTimestamp(StringValues values)
+    internal static DateTimeOffset? ParseSinceTimestamp(StringValues values)
     {
         if (values.Count == 0)
         {
@@ -244,7 +244,8 @@ public partial class Program
         IReadOnlyList<GraphStatusItem> Items,
         DateTimeOffset CachedAt);
 
-    private sealed record CachedGraphOverlay(
-        IReadOnlyList<GraphOverlayItem> Items,
-        DateTimeOffset CachedAt);
+    internal static string[] NormalizeValues(StringValues values) =>
+        values.Where(static v => !string.IsNullOrWhiteSpace(v))
+              .Select(static v => v!.Trim())
+              .ToArray();
 }