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/Controllers/Api/V1/MeController.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Controllers\Api\V1;
+
+use App\Http\Controllers\Controller;
+use App\Http\Resources\Api\V1\UserResource;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+final class MeController extends Controller
+{
+    public function __invoke(Request $request): JsonResponse
+    {
+        $user = $request->user()->load(['organisations', 'events']);
+
+        return $this->success(new UserResource($user));
+    }
+}