feat(saas): implement marketplace and tenant onboarding

Tiku.Application/Security/IFeatureUsageReconciliationService.cs

@@ -0,0 +1,31 @@
+namespace Tiku.Application.Security;
+
+public sealed record ReconcileFeatureUsageRequest(
+    Guid TenantId,
+    SystemScopeCallerType CallerType,
+    string Caller,
+    string Reason,
+    string CorrelationId);
+
+public sealed record ReconciledFeatureUsage(
+    string MetricCode,
+    long ActualValue,
+    long LimitValue,
+    bool Warning,
+    bool Exceeded);
+
+public interface IFeatureUsageReconciliationService
+{
+    Task<IReadOnlyCollection<ReconciledFeatureUsage>> ReconcileTenantAsync(
+        ReconcileFeatureUsageRequest request,
+        CancellationToken cancellationToken = default);
+
+    Task<int> ProcessDueAsync(CancellationToken cancellationToken = default);
+}
+
+public sealed class FeatureUsageReconciliationOptions
+{
+    public bool Enabled { get; set; } = true;
+    public int BatchSize { get; set; } = 100;
+    public int IntervalMinutes { get; set; } = 60;
+}