refactor: consolidate backend into modular monolith

Tiku.Infrastructure/PlatformAdmin/PlatformAdminService.cs

@@ -11,7 +11,6 @@ using Tiku.Domain.Platform;
 using Tiku.Domain.QuestionBanks;
 using Tiku.Domain.Tenancy;
 using Tiku.Infrastructure.Persistence;
-using Tiku.Infrastructure.Messaging;
 
 namespace Tiku.Infrastructure.PlatformAdmin;
 
@@ -248,14 +247,9 @@ internal sealed class PlatformAdminService(
                 ToBillingStatus = tenant.BillingStatus,
                 command.Reason
             });
-            await provider.GetRequiredService<ISecurityEventPublisher>().AuthorizationChangedAsync(
-                tenant.Id,
-                null,
-                "tenant_status_changed",
-                DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
-                $"tenant-status-{tenant.Id:N}",
-                cancellationToken);
             await dbContext.SaveChangesAsync(cancellationToken);
+            await provider.GetRequiredService<ITenantFeatureCacheInvalidator>()
+                .InvalidateAsync(tenant.Id, cancellationToken);
             var domainCount = await dbContext.TenantDomains.CountAsync(domain => domain.TenantId == tenant.Id, cancellationToken);
             var expiresAt = await dbContext.TenantSaasSubscriptions
                 .Where(subscription => subscription.TenantId == tenant.Id)

Tiku.Infrastructure/PlatformAdmin/PlatformTenantCapabilitiesService.cs

@@ -11,7 +11,6 @@ using Tiku.Domain.Growth;
 using Tiku.Domain.Operations;
 using Tiku.Domain.Platform;
 using Tiku.Domain.Tenancy;
-using Tiku.Infrastructure.Messaging;
 using Tiku.Infrastructure.Persistence;
 
 namespace Tiku.Infrastructure.PlatformAdmin;