Add an editorial calendar to the panel

A month of publications, scheduled dates, content coming off the site, and
calls opening and closing, each linked to its form.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/Feature/Panel/EditorialCalendarTest.php

@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Feature\Panel;
+
+use App\Enums\CallStatus;
+use App\Filament\Pages\EditorialCalendar;
+use App\Models\Call;
+use App\Models\Page;
+use Database\Seeders\RolePermissionSeeder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Livewire\Livewire;
+use PHPUnit\Framework\Attributes\Test;
+use Tests\FakesPireon;
+use Tests\TestCase;
+
+class EditorialCalendarTest extends TestCase
+{
+    use FakesPireon, RefreshDatabase;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->seed(RolePermissionSeeder::class);
+        $this->travelTo('2026-10-15 10:00:00');
+    }
+
+    #[Test]
+    public function the_month_shows_what_goes_live_comes_off_opens_and_closes(): void
+    {
+        $this->actingAs($this->userWithRoles('editor'));
+
+        Page::factory()->published()->create(['title' => ['es' => 'Ya publicada'], 'published_at' => '2026-10-02 09:00']);
+        Page::factory()->published()->create(['title' => ['es' => 'Programada'], 'published_at' => '2026-10-20 09:00']);
+        Page::factory()->draft()->create(['title' => ['es' => 'Borrador con fecha'], 'published_at' => '2026-10-21 09:00']);
+        Call::factory()->create(['title' => ['es' => 'Backend'], 'status' => CallStatus::Open, 'closes_at' => '2026-10-30']);
+        Page::factory()->published()->create(['title' => ['es' => 'Otro mes'], 'published_at' => '2026-12-01 09:00']);
+
+        Livewire::withQueryParams(['month' => '2026-10'])
+            ->test(EditorialCalendar::class)
+            ->assertSee('Ya publicada')
+            ->assertSee('Programada')
+            ->assertSee('Backend')
+            ->assertDontSee('Borrador con fecha')
+            ->assertDontSee('Otro mes')
+            ->call('next')
+            ->assertSet('month', '2026-11')
+            ->call('today')
+            ->assertSet('month', '2026-10');
+    }
+
+    #[Test]
+    public function the_page_opens(): void
+    {
+        $this->actingAs($this->userWithRoles('writer'));
+
+        $this->get(EditorialCalendar::getUrl())->assertOk();
+    }
+}