feat: add support for multiple event dates in variants

- Updated the FeaturedGroupService to include 'variants.eventDates' in the items query.
- Introduced a BelongsToMany relationship in EventDate for selected variants.
- Modified PurchaseItemResource and PurchaseItemSnapshotFactory to handle multiple event dates for variants.
- Enhanced StartCheckoutService to load event dates for variants.
- Updated TicketGeneratorService to accommodate event dates in ticket generation.
- Created migrations to support multi-value event dates and allow multiple variant values per attribute.
- Adjusted seeders to reflect new event date handling and added new attributes.
- Added tests to ensure correct functionality for multi-date variants and their integration with ticket generation.

tests/Feature/Ticket/TicketGeneratorServiceTest.php

@@ -235,6 +235,31 @@ class TicketGeneratorServiceTest extends TestCase
         $this->assertSame('2026-08-21 02:00:00', $fixedWindow->fixed_expires_at->format('Y-m-d H:i:s'));
     }
 
+    public function test_a_multi_date_variant_generates_one_ticket_for_each_selected_date(): void
+    {
+        $item = $this->createTicketableItem('multi-date-pass');
+        $dates = collect(['2026-08-20', '2026-08-21'])->map(fn (string $date) => EventDate::query()->create([
+            'tenant_code' => $this->tenant->codigo,
+            'date' => $date,
+            'time_start' => '00:00:00',
+            'time_end' => '23:59:59',
+        ]));
+        $variant = $item->variants()->create([
+            'inventory_id' => Inventory::query()->create()->id,
+        ]);
+        $variant->eventDates()->sync($dates->pluck('id'));
+
+        $tickets = $this->service->generate($item, $this->user, 1, $variant->id);
+        $tickets->each->loadMissing('validityTime');
+
+        $this->assertCount(2, $tickets);
+        $this->assertSame(
+            ['2026-08-20 00:00:00', '2026-08-21 00:00:00'],
+            $tickets->map(fn ($ticket): string => $ticket->validityTime->fixed_starts_at->format('Y-m-d H:i:s'))->all(),
+        );
+        $this->assertSame([$variant->id], $tickets->pluck('source_variant_id')->unique()->values()->all());
+    }
+
     public function test_marking_a_purchase_as_paid_ignores_items_without_tickets(): void
     {
         Event::fake([TicketsAvailable::class]);