feat(backend): fetch standard and custom services in bookings list

Populate booking.Services with a UNION query across booking_services and booking_custom_services tables, returning service name, price, duration, and override values.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

backend/handlers/bookings/bookings.go

@@ -456,6 +456,8 @@ func GetAllUserBookingsHandler(w http.ResponseWriter, r *http.Request) {
 	defer rows.Close()
 
 	var bookings []Booking
+	var bookingIDs []string
+
 	for rows.Next() {
 		var b Booking
 		var createdBy sql.NullString
@@ -481,7 +483,88 @@ func GetAllUserBookingsHandler(w http.ResponseWriter, r *http.Request) {
 		b.AmountDue = totalAmount - amountPaid
 		b.DurationMinutes = durationMinutes
 		populateDepositFields(&b, depositRequired, preStartAmountPaid)
+		b.Services = []BookingService{}
 		bookings = append(bookings, b)
+		bookingIDs = append(bookingIDs, b.ID)
+	}
+
+	if len(bookingIDs) > 0 {
+		serviceRows, err := db.DB.Query(r.Context(), `
+			SELECT
+				bs.service_id, bs.override_price, bs.override_duration_minutes,
+				s.name, s.description, s.price, s.duration_minutes,
+				bs.booking_id
+			FROM booking_services bs
+			LEFT JOIN services s ON bs.service_id = s.id
+			WHERE bs.booking_id = ANY($1)
+			UNION ALL
+			SELECT
+				bcs.custom_service_id, bcs.override_price, bcs.override_duration_minutes,
+				cs.name, cs.description, cs.price, cs.duration_minutes,
+				bcs.booking_id
+			FROM booking_custom_services bcs
+			LEFT JOIN custom_services cs ON bcs.custom_service_id = cs.id
+			WHERE bcs.booking_id = ANY($1)
+			ORDER BY booking_id, name
+		`, bookingIDs)
+		if err != nil {
+			log.Printf("Failed to fetch booking services: %v", err)
+			http.Error(w, "Internal server error", http.StatusInternalServerError)
+			return
+		}
+		defer serviceRows.Close()
+
+		servicesByBooking := make(map[string][]BookingService)
+		for serviceRows.Next() {
+			var s BookingService
+			var overridePrice sql.NullFloat64
+			var overrideDuration sql.NullInt32
+			var name, description sql.NullString
+			var basePrice sql.NullFloat64
+			var baseDuration sql.NullInt32
+			var bookingID string
+
+			if err := serviceRows.Scan(
+				&s.ServiceID,
+				&overridePrice, &overrideDuration,
+				&name, &description, &basePrice, &baseDuration,
+				&bookingID,
+			); err != nil {
+				log.Printf("Failed to scan service row: %v", err)
+				http.Error(w, "Internal server error", http.StatusInternalServerError)
+				return
+			}
+
+			s.BookingID = bookingID
+
+			if overridePrice.Valid {
+				s.OverridePrice = &overridePrice.Float64
+			}
+			if overrideDuration.Valid {
+				d := int(overrideDuration.Int32)
+				s.OverrideDurationMinutes = &d
+			}
+			if name.Valid {
+				s.ServiceName = &name.String
+			}
+			if description.Valid {
+				s.ServiceDescription = &description.String
+			}
+			if basePrice.Valid {
+				s.Price = &basePrice.Float64
+			}
+			if baseDuration.Valid {
+				d := int(baseDuration.Int32)
+				s.DurationMinutes = &d
+			}
+
+			servicesByBooking[bookingID] = append(servicesByBooking[bookingID], s)
+		}
+		for i := range bookings {
+			if services, exists := servicesByBooking[bookings[i].ID]; exists {
+				bookings[i].Services = services
+			}
+		}
 	}
 
 	w.Header().Set("Content-Type", "application/json")