docs: add @var for PHPStan

Author: kenjis

app/Controllers/DungeonController.php

@@ -2,6 +2,7 @@
 
 namespace App\Controllers;
 
+use App\Entities\Dungeon;
 use App\Models\DungeonModel;
 use CodeIgniter\HTTP\ResponseInterface;
 
@@ -33,6 +34,7 @@ public function __construct()
      */
     public function show(int $id)
     {
+        /** @var Dungeon|null $dungeon */
         $dungeon = $this->dungeons->find($id);
 
         if ($dungeon === null) {

tests/database/FakerTest.php

@@ -64,6 +64,7 @@ public function testCreateAddsToDatabase()
     public function testHelperUsesFaker()
     {
         // test_helper comes with the fake() method that does the same as above without all the set up
+        /** @var Monster $monster */
         $monster = fake(MonsterFaker::class);
         $this->assertIsInt($monster->id);