Refactor code structure for improved readability and maintainability; optimize performance in key functions.

src/__Libraries/StellaOps.Evidence/Validation/SchemaLoader.cs

@@ -0,0 +1,27 @@
+using System.Reflection;
+
+namespace StellaOps.Evidence.Validation;
+
+internal static class SchemaLoader
+{
+    public static string LoadSchema(string fileName)
+    {
+        var assembly = Assembly.GetExecutingAssembly();
+        var resourceName = assembly.GetManifestResourceNames()
+            .FirstOrDefault(name => name.EndsWith(fileName, StringComparison.OrdinalIgnoreCase));
+
+        if (resourceName is null)
+        {
+            throw new InvalidOperationException($"Schema resource not found: {fileName}");
+        }
+
+        using var stream = assembly.GetManifestResourceStream(resourceName);
+        if (stream is null)
+        {
+            throw new InvalidOperationException($"Schema resource not available: {resourceName}");
+        }
+
+        using var reader = new StreamReader(stream);
+        return reader.ReadToEnd();
+    }
+}