admin & data: correct admin action redirect, add SQLite retry, seed_test_data command

accounts/tests.py

@@ -956,9 +956,20 @@ class SendSmsAdminActionTests(TestCase):
             username='sms-admin', email='sms-admin@example.com', password='pass12345',
         )
         self.client.force_login(self.staff_user)
-        self.user1 = User.objects.create(name='u1', is_guest=False, phone='0910000001')
-        self.user2 = User.objects.create(name='u2', is_guest=False, phone='0910000002')
-        self.guest_no_phone = User.objects.create(name='guest', is_guest=True, phone=None)
+        # last_activity_at=now تا این کاربرهای عمومیِ setUp با فیلترِ
+        # get_inactive_users (که last_activity_at is null رو هم inactive
+        # حساب می‌کنه) قاطی نشن؛ تست‌های target='inactive' کاربرِ
+        # inactive/never-active موردنظرِ خودشون رو صریحاً می‌سازن.
+        now = timezone.now()
+        self.user1 = User.objects.create(
+            name='u1', is_guest=False, phone='0910000001', last_activity_at=now,
+        )
+        self.user2 = User.objects.create(
+            name='u2', is_guest=False, phone='0910000002', last_activity_at=now,
+        )
+        self.guest_no_phone = User.objects.create(
+            name='guest', is_guest=True, phone=None, last_activity_at=now,
+        )
         self.changelist_url = reverse('admin:accounts_user_changelist')
 
     def test_action_registered_on_user_admin(self):