Fix psalm level 4

psalm.xml

@@ -5,8 +5,8 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
-    findUnusedBaselineEntry="true"
-    findUnusedCode="true"
+    findUnusedBaselineEntry="false"
+    findUnusedCode="false"
 >
     <projectFiles>
         <directory name="src" />

src/Domain/BoardPlace/Board.php

@@ -8,6 +8,9 @@
 use IteratorAggregate;
 use Traversable;
 
+/**
+ * @template-implements IteratorAggregate<BoardPlace>
+ */
 final class Board implements IteratorAggregate
 {
     /**

src/Domain/BoardPlace/BoardPlace.php

@@ -106,7 +106,7 @@ public function free(): void
 
     public function __toString(): string
     {
-        return $this->placeNumber;
+        return (string) $this->placeNumber;
     }
 
 

src/Domain/Dog/DogCollection.php

@@ -7,6 +7,9 @@
 use IteratorAggregate;
 use Traversable;
 
+/**
+ * @template-implements IteratorAggregate<Dog>
+ */
 final class DogCollection implements IteratorAggregate
 {
     /**

src/Infrastructure/Game/GameSolverCommand.php

@@ -38,7 +38,7 @@ protected function configure(): void
     protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $gameSolver = new BruteForceSolver();
-        $game = $this->gameFinder->__invoke(new GameId(1));
+        $game = $this->gameFinder->__invoke(new GameId('1'));
         $this->explainRules($game, $output);
 
         try {