feat: replace email flows with in-app notifications

Add recipient notification detail and filtering, a queued admin composer, and contextual automatic titles. Retire email delivery, obsolete auth routes, newsletter data, and related templates and settings.

apps/communications/tests/test_announcements.py

@@ -0,0 +1,32 @@
+import json
+from unittest import mock
+
+from django.test import TestCase
+
+from apps.communications.models import Announcement
+from apps.users.models import User
+from core.authentication import create_jwt_token
+
+
+class AnnouncementDeliveryTests(TestCase):
+    def setUp(self):
+        self.staff = User.objects.create_user(
+            username="announcement_staff", mobile="09193000001", password="password", is_staff=True,
+        )
+        self.auth = {"HTTP_AUTHORIZATION": f"Bearer {create_jwt_token(self.staff)}"}
+
+    @mock.patch("apps.notifications.services.notify_user")
+    def test_publishing_announcement_does_not_send_manual_notifications(self, notify_user):
+        response = self.client.post("/api/communications/announcements/", json.dumps({
+            "title": "News", "content": "# Story", "is_published": True,
+        }), content_type="application/json", **self.auth)
+        self.assertEqual(response.status_code, 200)
+        self.assertTrue(Announcement.objects.filter(title="News").exists())
+        notify_user.assert_not_called()
+
+    def test_newsletter_category_and_routes_are_removed(self):
+        response = self.client.post("/api/communications/announcements/", json.dumps({
+            "title": "News", "content": "Story", "announcement_type": "newsletter",
+        }), content_type="application/json", **self.auth)
+        self.assertEqual(response.status_code, 422)
+        self.assertEqual(self.client.post("/api/communications/newsletter/subscribe/").status_code, 404)