fix: add missing initial migration for promociones app

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

app/promociones/migrations/0001_initial.py

@@ -0,0 +1,26 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = []
+
+    operations = [
+        migrations.CreateModel(
+            name='Promocion',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('nombre', models.CharField(max_length=255)),
+                ('fecha_inicio', models.DateField(blank=True, null=True)),
+                ('fecha_modificacion', models.DateField(blank=True, null=True)),
+                ('descripcion', models.TextField(blank=True, null=True)),
+                ('activo', models.BooleanField(default=True)),
+                ('categoria_id', models.IntegerField(blank=True, null=True)),
+            ],
+            options={
+                'db_table': 'promociones',
+            },
+        ),
+    ]