Refactor test utilities and enhance ASGI settings

- Cleaned up and standardized assertions in ApiTestMixin for API response validation.
- Updated ASGI settings to use os.environ for setting the DJANGO_SETTINGS_MODULE.
- Removed unused imports and improved formatting in settings.py.
- Refactored URL patterns in urls.py for better readability and organization.
- Enhanced view functions in views.py for consistency and clarity.
- Added .flake8 configuration for linting and style enforcement.
- Introduced type stubs for django-environ to improve type checking with Pylance.

rides/models/company.py

@@ -11,17 +11,17 @@ from core.models import TrackedModel
 @pghistory.track()
 class Company(TrackedModel):
     class CompanyRole(models.TextChoices):
-        MANUFACTURER = 'MANUFACTURER', 'Ride Manufacturer'
-        DESIGNER = 'DESIGNER', 'Ride Designer'
-        OPERATOR = 'OPERATOR', 'Park Operator'
-        PROPERTY_OWNER = 'PROPERTY_OWNER', 'Property Owner'
+        MANUFACTURER = "MANUFACTURER", "Ride Manufacturer"
+        DESIGNER = "DESIGNER", "Ride Designer"
+        OPERATOR = "OPERATOR", "Park Operator"
+        PROPERTY_OWNER = "PROPERTY_OWNER", "Property Owner"
 
     name = models.CharField(max_length=255)
     slug = models.SlugField(max_length=255, unique=True)
     roles = ArrayField(
         models.CharField(max_length=20, choices=CompanyRole.choices),
         default=list,
-        blank=True
+        blank=True,
     )
     description = models.TextField(blank=True)
     website = models.URLField(blank=True)
@@ -43,8 +43,8 @@ class Company(TrackedModel):
 
     def get_absolute_url(self):
         # This will need to be updated to handle different roles
-        return reverse('companies:detail', kwargs={'slug': self.slug})
-        return '#'
+        return reverse("companies:detail", kwargs={"slug": self.slug})
+        return "#"
 
     @classmethod
     def get_by_slug(cls, slug):
@@ -56,7 +56,7 @@ class Company(TrackedModel):
             history_model = cls.get_history_model()
             history_entry = (
                 history_model.objects.filter(slug=slug)
-                .order_by('-pgh_created_at')
+                .order_by("-pgh_created_at")
                 .first()
             )
             if history_entry:
@@ -65,13 +65,12 @@ class Company(TrackedModel):
             # Check manual slug history as fallback
             try:
                 historical = HistoricalSlug.objects.get(
-                    content_type__model='company',
-                    slug=slug
+                    content_type__model="company", slug=slug
                 )
                 return cls.objects.get(pk=historical.object_id), True
             except (HistoricalSlug.DoesNotExist, cls.DoesNotExist):
                 raise cls.DoesNotExist("No company found with this slug")
 
     class Meta:
-        ordering = ['name']
-        verbose_name_plural = 'Companies'
+        ordering = ["name"]
+        verbose_name_plural = "Companies"