feat: infrastructure assets management with warranty tracking and EAN lookup integration

app/Models/Licence.php

@@ -0,0 +1,60 @@
+<?php
+ 
+namespace App\Models;
+ 
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+ 
+class Licence extends Model
+{
+    use HasFactory;
+ 
+    protected $fillable = [
+        'contrat_id',
+        'fournisseur_id',
+        'commune_id',
+        'nom',
+        'cle_licence',
+        'nombre_sieges_total',
+        'nombre_sieges_utilises',
+        'date_acquisition',
+        'date_expiration',
+        'type_licence',
+        'statut',
+        'notes',
+    ];
+ 
+    protected $casts = [
+        'date_acquisition' => 'date',
+        'date_expiration'  => 'date',
+        'cle_licence'      => 'encrypted', // Encrypted storage for license keys
+    ];
+ 
+    public function contrat(): BelongsTo
+    {
+        return $this->belongsTo(Contrat::class);
+    }
+ 
+    public function fournisseur(): BelongsTo
+    {
+        return $this->belongsTo(Fournisseur::class);
+    }
+ 
+    public function commune(): BelongsTo
+    {
+        return $this->belongsTo(Commune::class);
+    }
+ 
+    /**
+     * Get the usage rate as a percentage.
+     */
+    public function getTauxUtilisationAttribute(): float
+    {
+        if ($this->nombre_sieges_total <= 0) {
+            return 0;
+        }
+ 
+        return round(($this->nombre_sieges_utilises / $this->nombre_sieges_total) * 100, 2);
+    }
+}