feat(events): associate purchases and integrations with events

tests/Feature/Migrations/AddClientIdToEventsTest.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace Tests\Feature\Migrations;
+
+use App\Domains\Core\Client\Models\Client;
+use App\Domains\Ticketing\Event\Models\Event;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+use Tests\TestCase;
+
+class AddClientIdToEventsTest extends TestCase
+{
+    public function test_event_client_overrides_the_tenant_client_when_configured(): void
+    {
+        Schema::create('clients', function (Blueprint $table): void {
+            $table->id();
+            $table->string('code');
+            $table->string('name');
+        });
+        Schema::create('tenants', function (Blueprint $table): void {
+            $table->id();
+            $table->foreignId('client_id');
+            $table->string('codigo');
+        });
+        Schema::create('events', function (Blueprint $table): void {
+            $table->id();
+            $table->string('tenant_code');
+            $table->string('title');
+            $table->timestamps();
+        });
+
+        DB::table('clients')->insert([
+            ['id' => 10, 'code' => 'tenant-client', 'name' => 'Tenant Client'],
+            ['id' => 11, 'code' => 'event-client', 'name' => 'Event Client'],
+        ]);
+        DB::table('tenants')->insert(['id' => 20, 'client_id' => 10, 'codigo' => 'tenant']);
+        DB::table('events')->insert([
+            'id' => 30,
+            'tenant_code' => 'tenant',
+            'title' => 'Event',
+            'created_at' => now(),
+            'updated_at' => now(),
+        ]);
+
+        $migration = require database_path('migrations/2026_09_28_000000_add_client_id_to_events.php');
+        $migration->up();
+
+        $event = Event::query()->findOrFail(30);
+        $this->assertSame(10, $event->effectiveClient()->id);
+
+        $event->update(['client_id' => 11]);
+
+        $this->assertSame(11, $event->fresh()->effectiveClient()->id);
+        $this->assertTrue(Client::query()->findOrFail(11)->events()->whereKey(30)->exists());
+    }
+}