feat(backend) : add isFinal field to TaskStatus entity

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

src/Entity/TaskStatus.php

@@ -47,6 +47,10 @@ class TaskStatus
     #[Groups(['task_status:read', 'task_status:write', 'task:read'])]
     private ?int $position = 0;
 
+    #[ORM\Column(type: 'boolean')]
+    #[Groups(['task_status:read', 'task_status:write', 'task:read'])]
+    private bool $isFinal = false;
+
     public function getId(): ?int
     {
         return $this->id;
@@ -87,4 +91,16 @@ class TaskStatus
 
         return $this;
     }
+
+    public function isFinal(): bool
+    {
+        return $this->isFinal;
+    }
+
+    public function setIsFinal(bool $isFinal): static
+    {
+        $this->isFinal = $isFinal;
+
+        return $this;
+    }
 }