feat(composant) : create composant slot tables and migrate data from structure JSON

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/Entity/Piece.php

@@ -109,6 +109,15 @@ class Piece
     #[Groups(['piece:read'])]
     private Collection $customFieldValues;
 
+    /**
+     * @var Collection<int, Product>
+     */
+    #[ORM\ManyToMany(targetEntity: Product::class, inversedBy: 'linkedPieces')]
+    #[ORM\JoinTable(name: 'piece_products')]
+    #[ORM\JoinColumn(name: 'piece_id', referencedColumnName: 'id', onDelete: 'CASCADE')]
+    #[ORM\InverseJoinColumn(name: 'product_id', referencedColumnName: 'id', onDelete: 'CASCADE')]
+    private Collection $products;
+
     /**
      * @var Collection<int, MachinePieceLink>
      */
@@ -130,6 +139,7 @@ class Piece
         $this->constructeurs     = new ArrayCollection();
         $this->documents         = new ArrayCollection();
         $this->customFieldValues = new ArrayCollection();
+        $this->products          = new ArrayCollection();
         $this->machineLinks      = new ArrayCollection();
     }
 
@@ -298,4 +308,28 @@ class Piece
     {
         return $this->customFieldValues;
     }
+
+    /**
+     * @return Collection<int, Product>
+     */
+    public function getProducts(): Collection
+    {
+        return $this->products;
+    }
+
+    public function addProduct(Product $product): static
+    {
+        if (!$this->products->contains($product)) {
+            $this->products->add($product);
+        }
+
+        return $this;
+    }
+
+    public function removeProduct(Product $product): static
+    {
+        $this->products->removeElement($product);
+
+        return $this;
+    }
 }