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/api/v1/admin/urls.py

@@ -0,0 +1,37 @@
+"""
+Admin API URL configuration.
+Provides endpoints for admin dashboard functionality.
+"""
+
+from django.urls import path
+
+from . import views
+
+app_name = "admin_api"
+
+urlpatterns = [
+    # OSM Cache Stats
+    path(
+        "osm-usage-stats/",
+        views.OSMUsageStatsView.as_view(),
+        name="osm_usage_stats",
+    ),
+    # Rate Limit Metrics
+    path(
+        "rate-limit-metrics/",
+        views.RateLimitMetricsView.as_view(),
+        name="rate_limit_metrics",
+    ),
+    # Database Manager (admin CRUD operations)
+    path(
+        "database-manager/",
+        views.DatabaseManagerView.as_view(),
+        name="database_manager",
+    ),
+    # Celery Task Status (read-only)
+    path(
+        "tasks/status/",
+        views.CeleryTaskStatusView.as_view(),
+        name="task_status",
+    ),
+]