feat(security): complete capability messaging workflows

Tiku.Application/Security/ConsumerAuthorizationMetadata.cs

@@ -0,0 +1,15 @@
+namespace Tiku.Application.Security;
+
+[AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = false)]
+public sealed class ConsumerAuthorizationMetadataAttribute(
+    string realm,
+    string module,
+    CapabilityOperation operation,
+    string auditAction) : Attribute
+{
+    public string Realm { get; } = realm;
+    public string Module { get; } = module;
+    public CapabilityOperation Operation { get; } = operation;
+    public string AuditAction { get; } = auditAction;
+    public bool RequiresSystemScope { get; init; }
+}