Initial commit: SWP.Core enterprise framework with multi-tenant architecture, configuration management, security, telemetry and comprehensive test suite

Core/Configurations/IAppConfiguration.cs

@@ -0,0 +1,9 @@
+namespace SWP.Core.Configurations
+{
+    /// <summary>
+    /// Marker interface for application configurations that should be automatically registered in the DI container.
+    /// Classes implementing this interface will be loaded from configuration and registered as singletons.
+    /// </summary>
+    public interface IAppConfiguration { }
+
+}