ajoute le portail Laravel : connexion prof/élève, session unique, gestion de classe, salle d'attente

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

portail/app/Models/Lab.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class Lab extends Model
+{
+    use HasFactory;
+
+    protected $fillable = ['identifiant', 'titre', 'niveau', 'duree_min'];
+
+    public function seances(): HasMany
+    {
+        return $this->hasMany(Seance::class);
+    }
+}