[REF] Code quality improvements and structure fixes

- Add mypy.ini configuration to exclude migration scripts
- Rename migration files to proper snake_case (post-migration.py → post_migration.py)
- Add __init__.py to migration directories for proper Python package structure
- Add new portal access tests for website_sale_aplicoop
- Code formatting improvements (black, isort)
- Update copilot instructions and project configuration

Related to previous code quality refactoring work.

website_sale_aplicoop/controllers/portal.py

@@ -3,7 +3,6 @@
 
 import logging
 
-from odoo import _
 from odoo.http import request
 from odoo.http import route
 
@@ -37,13 +36,13 @@ class CustomerPortal(sale_portal.CustomerPortal):
 
         # Add translated day names for pickup_day display
         values["day_names"] = [
-            _("Monday"),
-            _("Tuesday"),
-            _("Wednesday"),
-            _("Thursday"),
-            _("Friday"),
-            _("Saturday"),
-            _("Sunday"),
+            request.env._("Monday"),
+            request.env._("Tuesday"),
+            request.env._("Wednesday"),
+            request.env._("Thursday"),
+            request.env._("Friday"),
+            request.env._("Saturday"),
+            request.env._("Sunday"),
         ]
 
         request.session["my_orders_history"] = values["orders"].ids[:100]
@@ -60,13 +59,13 @@ class CustomerPortal(sale_portal.CustomerPortal):
         # If it's a template render (not a redirect), add day_names to the context
         if hasattr(response, "qcontext"):
             response.qcontext["day_names"] = [
-                _("Monday"),
-                _("Tuesday"),
-                _("Wednesday"),
-                _("Thursday"),
-                _("Friday"),
-                _("Saturday"),
-                _("Sunday"),
+                request.env._("Monday"),
+                request.env._("Tuesday"),
+                request.env._("Wednesday"),
+                request.env._("Thursday"),
+                request.env._("Friday"),
+                request.env._("Saturday"),
+                request.env._("Sunday"),
             ]
 
         return response