feat(tickets): group user tickets by event

database/migrations/2026_09_22_020000_add_event_id_to_tickets.php

@@ -0,0 +1,52 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('tickets', function (Blueprint $table): void {
+            $table->foreignId('event_id')
+                ->nullable()
+                ->after('tenant_code')
+                ->constrained('events')
+                ->cascadeOnUpdate()
+                ->restrictOnDelete();
+            $table->index(['tenant_code', 'user_id', 'event_id']);
+        });
+
+        DB::table('tickets')
+            ->join('catalog_items', 'catalog_items.id', '=', 'tickets.source_catalog_item_id')
+            ->whereNotNull('catalog_items.event_id')
+            ->select(['tickets.id', 'catalog_items.event_id as source_event_id'])
+            ->orderBy('tickets.id')
+            ->chunk(500, function ($tickets): void {
+                foreach ($tickets as $ticket) {
+                    DB::table('tickets')
+                        ->where('id', $ticket->id)
+                        ->update(['event_id' => $ticket->source_event_id]);
+                }
+            });
+    }
+
+    public function down(): void
+    {
+        if (DB::getDriverName() === 'sqlite') {
+            Schema::table('tickets', function (Blueprint $table): void {
+                $table->dropIndex(['tenant_code', 'user_id', 'event_id']);
+                $table->dropColumn('event_id');
+            });
+
+            return;
+        }
+
+        Schema::table('tickets', function (Blueprint $table): void {
+            $table->dropIndex(['tenant_code', 'user_id', 'event_id']);
+            $table->dropConstrainedForeignId('event_id');
+        });
+    }
+};