feat: always load fresh api data when starting to edit booking

src/BusProNet/DataProcessor/BookingDataProcessor.php

@@ -233,7 +233,8 @@ class BookingDataProcessor
             $participant->transportationInbound = $travel->transportationServices[$participant->transportationInbound->id];
         }
 
-        // Enrich pickup
+        // Enrich pickup (only outbound - API limitation: pickups are only supported when
+        // outbound transportation is bus; inbound-only bus bookings cannot have pickups)
         if (null !== $participant->pickup && isset($travel->pickupsOutbound[$participant->pickup->id])) {
             $participant->pickup = $travel->pickupsOutbound[$participant->pickup->id];
         }