test: migrate backend suites to pytest with module coverage gate

Split backend tests into unit and integration suites, add isolated fixtures and coverage enforcement, and update CI and test documentation. Cover current authentication, content, notification, payment, media, and admin flows; fix behaviors revealed by the new tests. Validate both suites and the per-module gate against local PostgreSQL.

apps/blog/management/commands/seed_blog_mock_data.py

@@ -184,7 +184,7 @@ class Command(BaseCommand):
     def _seed_writers(self, editor_group: Group, password: str):
         writers = []
         for index, spec in enumerate(WRITERS, start=1):
-            user, created = User.objects.get_or_create(
+            user, created = User.all_objects.get_or_create(
                 username=spec["username"],
                 defaults={
                     "first_name": spec["first_name"],
@@ -201,6 +201,8 @@ class Command(BaseCommand):
             user.bio = spec["bio"]
             user.is_active = True
             user.is_mobile_verified = True
+            user.is_deleted = False
+            user.deleted_at = None
             if created:
                 user.set_password(password)
             set_image_field(
@@ -218,19 +220,24 @@ class Command(BaseCommand):
         return writers
 
     def _seed_categories(self):
-        root, _ = Category.objects.get_or_create(
+        root, _ = Category.all_objects.get_or_create(
             slug="mock-بلاگ-انجمن",
             defaults={"name": "بلاگ انجمن", "description": "دسته اصلی محتوای تستی بلاگ"},
         )
+        root.is_deleted = False
+        root.deleted_at = None
+        root.save(update_fields=["is_deleted", "deleted_at"])
         names = ["برنامه‌نویسی", "علوم کامپیوتر", "توسعه نرم‌افزار", "ابزارها", "هوش مصنوعی"]
         categories = {"بلاگ انجمن": root}
         for name in names:
-            category, _ = Category.objects.get_or_create(
+            category, _ = Category.all_objects.get_or_create(
                 slug=f"mock-{name}",
                 defaults={"name": name, "parent": root, "description": f"مطالب تستی درباره {name}"},
             )
             category.name = name
             category.parent = root
+            category.is_deleted = False
+            category.deleted_at = None
             category.save()
             categories[name] = category
         return categories
@@ -238,8 +245,10 @@ class Command(BaseCommand):
     def _seed_tags(self):
         tags = {}
         for name in TAG_NAMES:
-            tag, _ = Tag.objects.get_or_create(slug=f"mock-{name}", defaults={"name": name})
+            tag, _ = Tag.all_objects.get_or_create(slug=f"mock-{name}", defaults={"name": name})
             tag.name = name
+            tag.is_deleted = False
+            tag.deleted_at = None
             tag.save()
             tags[name] = tag
         return tags
@@ -247,7 +256,7 @@ class Command(BaseCommand):
     def _seed_banners(self):
         colors = [(9, 80, 90), (120, 64, 24), (38, 70, 83)]
         for index in range(1, 4):
-            banner, _ = BlogBanner.objects.get_or_create(
+            banner, _ = BlogBanner.all_objects.get_or_create(
                 title=f"Mock Blog Banner {index}",
                 defaults={
                     "url": f"https://east-guilan-ce.ir/blog?mock-banner={index}",
@@ -260,6 +269,8 @@ class Command(BaseCommand):
             banner.alt_text = f"بنر تستی بلاگ {index}"
             banner.sort_order = index
             banner.is_active = True
+            banner.is_deleted = False
+            banner.deleted_at = None
             set_image_field(
                 banner,
                 "image",
@@ -298,6 +309,8 @@ class Command(BaseCommand):
             post.content = make_markdown(spec["title"])
             post.excerpt = f"خلاصه تستی برای نوشته «{spec['title']}» که برای بررسی کارت‌ها و سئوی بلاگ استفاده می‌شود."
             post.status = Post.StatusChoices.PUBLISHED
+            post.is_deleted = False
+            post.deleted_at = None
             post.category = categories[spec["category"]]
             post.is_featured = index <= 2
             post.published_at = post.published_at or timezone.now() - timezone.timedelta(days=index * 3)