feat: Implement a new notifications application, add admin API views for dashboard metrics, introduce scheduled tasks, and update API routing and project configurations.

backend/apps/notifications/admin.py

@@ -0,0 +1,38 @@
+"""
+Notifications admin configuration.
+"""
+
+from django.contrib import admin
+
+from .models import NotificationLog, NotificationPreference, Subscriber, SystemAnnouncement
+
+
+@admin.register(Subscriber)
+class SubscriberAdmin(admin.ModelAdmin):
+    list_display = ["user", "novu_subscriber_id", "email", "created_at"]
+    search_fields = ["user__username", "novu_subscriber_id", "email"]
+    readonly_fields = ["created_at", "updated_at"]
+
+
+@admin.register(NotificationPreference)
+class NotificationPreferenceAdmin(admin.ModelAdmin):
+    list_display = ["user", "is_opted_out", "updated_at"]
+    list_filter = ["is_opted_out"]
+    search_fields = ["user__username"]
+    readonly_fields = ["created_at", "updated_at"]
+
+
+@admin.register(NotificationLog)
+class NotificationLogAdmin(admin.ModelAdmin):
+    list_display = ["workflow_id", "user", "channel", "status", "created_at"]
+    list_filter = ["status", "channel", "workflow_id"]
+    search_fields = ["user__username", "workflow_id", "novu_transaction_id"]
+    readonly_fields = ["created_at", "updated_at"]
+
+
+@admin.register(SystemAnnouncement)
+class SystemAnnouncementAdmin(admin.ModelAdmin):
+    list_display = ["title", "severity", "is_active", "created_by", "created_at"]
+    list_filter = ["severity", "is_active"]
+    search_fields = ["title", "message"]
+    readonly_fields = ["created_at"]