refactor: split models into modules, remove template-based views, and clean up code style

- Split monolithic models.py into models/ package (customers, products, sales, payments, admin)
- Removed forms.py, all HTML templates, and associated template-based views
- Added api/ package with CatalogSaleView placeholder
- Updated all imports across project to use new model paths
- Removed obsolete tests (form, export, purchase, summary tests)
- Removed template-based URL patterns, kept only API endpoints
- Standardized string quotes (single to double) and reformatted code

tienda_ilusion/don_confiao/urls.py

@@ -4,39 +4,55 @@ from rest_framework.routers import DefaultRouter
 from . import views
 from . import api_views
 
-app_name = 'don_confiao'
+app_name = "don_confiao"
 
 router = DefaultRouter()
-router.register(r'sales', api_views.SaleView, basename='sale')
-router.register(r'customers', api_views.CustomerView, basename='customer')
-router.register(r'products', api_views.ProductView, basename='product')
-router.register(r'reconciliate_jar', api_views.ReconciliateJarModelView,
-                basename='reconciliate_jar')
+router.register(r"sales", api_views.SaleView, basename="sale")
+router.register(r"customers", api_views.CustomerView, basename="customer")
+router.register(r"products", api_views.ProductView, basename="product")
+router.register(
+    r"reconciliate_jar",
+    api_views.ReconciliateJarModelView,
+    basename="reconciliate_jar",
+)
 
 urlpatterns = [
-    path("", views.index, name="wellcome"),
-    path("comprar", views.buy, name="buy"),
-    path("compras", views.purchases, name="purchases"),
     path("productos", views.products, name="products"),
-    path("lista_productos", views.ProductListView.as_view(), name='product_list'),
-    path("importar_productos", views.import_products, name="import_products"),
-    path('api/importar_productos_de_tryton',
-         api_views.ProductsFromTrytonView.as_view(),
-         name="products_from_tryton"),
-    path("importar_terceros", views.import_customers, name="import_customers"),
-    path('api/importar_clientes_de_tryton',
-         api_views.CustomersFromTrytonView.as_view(),
-         name="customers_from_tryton"),
-    path("exportar_ventas_para_tryton",
-         views.exportar_ventas_para_tryton,
-         name="exportar_ventas_para_tryton"),
-    path('api/enviar_ventas_a_tryton', api_views.SalesToTrytonView.as_view(), name="send_tryton"),
-    path("resumen_compra/<int:id>", views.purchase_summary, name="purchase_summary"),
-    path("resumen_compra_json/<int:id>", api_views.SaleSummary.as_view(), name="purchase_json_summary"),
-    path("payment_methods/all/select_format", api_views.PaymentMethodView.as_view(), name="payment_methods_to_select"),
-    path('purchases/for_reconciliation', api_views.SalesForReconciliationView.as_view(), name='sales_for_reconciliation'),
-    path('reconciliate_jar', api_views.ReconciliateJarView.as_view()),
-    path('api/admin_code/validate/<code>', api_views.AdminCodeValidateView.as_view()),
-    path('api/sales/for_tryton', api_views.SalesForTrytonView.as_view()),
-    path('api/', include(router.urls)),
+    path(
+        "resumen_compra_json/<int:id>",
+        api_views.SaleSummary.as_view(),
+        name="purchase_json_summary",
+    ),
+    path("api/", include(router.urls)),
+    path(
+        "api/importar_productos_de_tryton",
+        api_views.ProductsFromTrytonView.as_view(),
+        name="products_from_tryton",
+    ),
+    path(
+        "api/importar_clientes_de_tryton",
+        api_views.CustomersFromTrytonView.as_view(),
+        name="customers_from_tryton",
+    ),
+    path(
+        "api/enviar_ventas_a_tryton",
+        api_views.SalesToTrytonView.as_view(),
+        name="send_tryton",
+    ),
+    path(
+        "payment_methods/all/select_format",
+        api_views.PaymentMethodView.as_view(),
+        name="payment_methods_to_select",
+    ),
+    path(
+        "purchases/for_reconciliation",
+        api_views.SalesForReconciliationView.as_view(),
+        name="sales_for_reconciliation",
+    ),
+    path("reconciliate_jar", api_views.ReconciliateJarView.as_view()),
+    path(
+        "api/admin_code/validate/<code>",
+        api_views.AdminCodeValidateView.as_view(),
+    ),
+    path("api/sales/for_tryton", api_views.SalesForTrytonView.as_view()),
 ]