Add tenant lifecycle view and limit controls

app/Services/Tenant/TenantUsageService.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace App\Services\Tenant;
+
+use App\Models\EventMediaAsset;
+use App\Models\Tenant;
+
+class TenantUsageService
+{
+    public function storageSummary(Tenant $tenant): array
+    {
+        $limitBytes = $this->storageLimitBytes($tenant);
+        $usedBytes = $this->storageUsedBytes($tenant);
+        $remainingBytes = $limitBytes !== null
+            ? max(0, $limitBytes - $usedBytes)
+            : null;
+
+        return [
+            'used_bytes' => $usedBytes,
+            'limit_bytes' => $limitBytes,
+            'remaining_bytes' => $remainingBytes,
+            'used_mb' => $this->bytesToMegabytes($usedBytes),
+            'limit_mb' => $limitBytes !== null ? $this->bytesToMegabytes($limitBytes) : null,
+            'remaining_mb' => $remainingBytes !== null ? $this->bytesToMegabytes($remainingBytes) : null,
+            'percentage' => $limitBytes !== null && $limitBytes > 0
+                ? round(min(1, $usedBytes / $limitBytes) * 100, 1)
+                : null,
+        ];
+    }
+
+    public function storageLimitBytes(Tenant $tenant): ?int
+    {
+        $limitMb = $tenant->max_storage_mb;
+
+        if ($limitMb === null) {
+            return null;
+        }
+
+        $limitMb = (int) $limitMb;
+
+        if ($limitMb <= 0) {
+            return null;
+        }
+
+        return $limitMb * 1024 * 1024;
+    }
+
+    public function storageUsedBytes(Tenant $tenant): int
+    {
+        return (int) EventMediaAsset::query()
+            ->whereHas('event', fn ($query) => $query->where('tenant_id', $tenant->getKey()))
+            ->sum('size_bytes');
+    }
+
+    private function bytesToMegabytes(int $bytes): float
+    {
+        return round($bytes / (1024 * 1024), 2);
+    }
+}