Sprint 5: PartnerCustomerListView — partner-scoped customer list

- admin_api/views.py: PartnerCustomerListView — distinct users who've
  booked partner's events, annotated with bookings_count + total_spent
  aggregates, search by email/name, paginated [1,200]
- admin_api/urls.py: wire partners/me/customers/

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

admin_api/urls.py

@@ -35,6 +35,8 @@ urlpatterns = [
     path('partners/me/events/<int:event_pk>/tiers/<int:tier_pk>/', views.PartnerMeEventTierDetailView.as_view(), name='partner-me-event-tier-detail'),
     # Partner-Me: bookings (Sprint 4)
     path('partners/me/bookings/', views.PartnerBookingListView.as_view(), name='partner-me-bookings'),
+    # Partner-Me: customers (Sprint 5)
+    path('partners/me/customers/', views.PartnerCustomerListView.as_view(), name='partner-me-customers'),
     path('users/metrics/', views.UserMetricsView.as_view(), name='user-metrics'),
     path('users/', views.UserListView.as_view(), name='user-list'),
     path('users/<int:pk>/', views.UserDetailView.as_view(), name='user-detail'),

admin_api/views.py

@@ -3985,3 +3985,88 @@ class PartnerBookingListView(APIView):
             'pageSize': page_size,
             'results': results,
         })
+
+
+# ============================================================
+# Sprint 5 — Partner Customers (Users who booked partner events)
+# ============================================================
+
+class PartnerCustomerListView(APIView):
+    """
+    GET /api/v1/partners/me/customers/
+    Returns distinct users who have made bookings for this partner's events.
+    Query params: search, page, page_size
+    """
+    permission_classes = [IsAuthenticated]
+
+    def get(self, request):
+        from bookings.models import Booking
+        from accounts.models import User
+        from django.db.models import Count, Sum, F, Q, DecimalField, ExpressionWrapper
+
+        partner, err = _require_partner(request)
+        if err:
+            return err
+
+        # Annotate users with per-partner booking stats
+        user_qs = User.objects.filter(
+            booking__ticket_meta__event__partner=partner
+        ).annotate(
+            bookings_count=Count(
+                'booking',
+                filter=Q(booking__ticket_meta__event__partner=partner),
+            ),
+            total_spent=Sum(
+                ExpressionWrapper(
+                    F('booking__price') * F('booking__quantity'),
+                    output_field=DecimalField(max_digits=12, decimal_places=2),
+                ),
+                filter=Q(booking__ticket_meta__event__partner=partner),
+            ),
+        ).distinct().order_by('-bookings_count', 'id')
+
+        # Search by email / name
+        search = request.query_params.get('search', '').strip()
+        if search:
+            user_qs = user_qs.filter(
+                Q(email__icontains=search) |
+                Q(first_name__icontains=search) |
+                Q(last_name__icontains=search) |
+                Q(username__icontains=search)
+            )
+
+        # Pagination
+        try:
+            page_size = max(1, min(int(request.query_params.get('page_size', 20)), 200))
+        except (ValueError, TypeError):
+            page_size = 20
+        try:
+            page = max(1, int(request.query_params.get('page', 1)))
+        except (ValueError, TypeError):
+            page = 1
+
+        total = user_qs.count()
+        start = (page - 1) * page_size
+        users = user_qs[start:start + page_size]
+
+        results = []
+        for u in users:
+            display_name = f"{u.first_name} {u.last_name}".strip() or u.username
+            results.append({
+                'id': str(u.id),
+                'name': display_name,
+                'email': u.email,
+                'phone': u.phone if hasattr(u, 'phone') else '',
+                'bookingsCount': u.bookings_count or 0,
+                'totalSpent': str(u.total_spent or 0),
+                'joinedAt': u.date_joined.isoformat() if u.date_joined else None,
+                'lastLogin': u.last_login.isoformat() if u.last_login else None,
+                'isActive': u.is_active,
+            })
+
+        return Response({
+            'count': total,
+            'page': page,
+            'pageSize': page_size,
+            'results': results,
+        })