refactor: align codebase with EventCrew domain and trim legacy band stack

- Update API: events, users, policies, routes, resources, migrations
- Remove deprecated models/resources (customers, setlists, invitations, etc.)
- Refresh admin app and docs; remove apps/band

Made-with: Cursor

api/app/Http/Resources/Api/V1/OrganisationResource.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Resources\Api\V1;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+final class OrganisationResource extends JsonResource
+{
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->id,
+            'name' => $this->name,
+            'slug' => $this->slug,
+            'billing_status' => $this->billing_status,
+            'settings' => $this->settings,
+            'created_at' => $this->created_at->toIso8601String(),
+            'updated_at' => $this->updated_at->toIso8601String(),
+        ];
+    }
+}