refactor: reorganizar estructura del proyecto al estándar app/api_config

- core/ → app/api_config/
- apps/backend_admin/ → app/backend_admin/
- apps/common/ → app/common/
- apps/promociones/ → app/promociones/
- manage.py → app/manage.py
- Añadir app/requirements.txt
- Actualizar todos los imports y referencias (DJANGO_SETTINGS_MODULE, ROOT_URLCONF, WSGI_APPLICATION, INSTALLED_APPS)
- Actualizar Dockerfile con nuevo WORKDIR

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

app/backend_admin/models.py

@@ -0,0 +1,26 @@
+from django.db import models
+from django.utils import timezone
+
+class Log(models.Model):
+    # Usamos BigAutoField para el BIGINT id de tu tabla
+    id = models.BigAutoField(primary_key=True)
+    user_id = models.IntegerField(default=0)
+    user = models.CharField(max_length=255, default='anonimo')
+    app_id = models.IntegerField(default=0)
+    # GenericIPAddressField para el tipo INET de Postgres
+    remote_address = models.GenericIPAddressField(null=True, blank=True)
+    request = models.JSONField(null=True, blank=True)  # Para JSONB
+    response = models.JSONField(null=True, blank=True) # Para JSONB
+    status_code = models.CharField(max_length=10, default='0')
+    path = models.CharField(max_length=255)
+    method = models.CharField(max_length=10)
+    createdAt = models.DateTimeField(default=timezone.now)
+    updatedAt = models.DateTimeField(auto_now=True)
+
+
+    class Meta:
+        db_table = 'audit_logs'
+        # managed = True  <-- Asegúrate de que no esté en False
+
+    def __str__(self):
+        return f"{self.method} {self.path} ({self.status_code})"