Fix: socket permissions para nginx

app/Models/Alumno.php

@@ -5,11 +5,17 @@ namespace App\Models;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Illuminate\Database\Eloquent\Relations\HasMany;
 
 class Alumno extends Model
 {
     protected $guarded = [];
 
+    protected $casts = [
+        'opt_out'    => 'boolean',
+        'opt_out_at' => 'datetime',
+    ];
+
     public function existe($plantelId): bool
     {
         return $this->plantelUsuarios()
@@ -52,4 +58,21 @@ class Alumno extends Model
         return $this->hasMany(Documento::class);
     }
 
+    public function promociones(): BelongsToMany
+    {
+        return $this->belongsToMany(Promocion::class, 'alumno_promocion')
+            ->withPivot(['enviado_at', 'status_envio', 'whatsapp_mensaje_id']);
+    }
+
+    public function whatsappLogs(): HasMany
+    {
+        return $this->hasMany(WhatsappLog::class);
+    }
+
+    public function telefonoWhatsapp(): ?string
+    {
+        $user = $this->alumnos()->first();
+        return $user?->telefono;
+    }
+
 }