stabilizaiton work - projects rework for maintenanceability and ui livening

src/__Libraries/StellaOps.Configuration/StellaOpsAuthorityOptions.Helpers.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+
+namespace StellaOps.Configuration;
+
+public sealed partial class StellaOpsAuthorityOptions
+{
+    private static void ValidateLifetime(TimeSpan value, string propertyName, TimeSpan maximum)
+    {
+        if (value <= TimeSpan.Zero)
+        {
+            throw new InvalidOperationException($"Authority configuration requires {propertyName} to be greater than zero.");
+        }
+
+        if (value > maximum)
+        {
+            throw new InvalidOperationException($"Authority configuration requires {propertyName} to be less than or equal to {maximum}.");
+        }
+    }
+
+    private static void NormaliseList(IList<string> values)
+    {
+        if (values.Count == 0)
+        {
+            return;
+        }
+
+        var unique = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+
+        for (var index = values.Count - 1; index >= 0; index--)
+        {
+            var entry = values[index];
+
+            if (string.IsNullOrWhiteSpace(entry))
+            {
+                values.RemoveAt(index);
+                continue;
+            }
+
+            var trimmed = entry.Trim();
+            if (!unique.Add(trimmed))
+            {
+                values.RemoveAt(index);
+                continue;
+            }
+
+            values[index] = trimmed;
+        }
+    }
+}