fix(appointment): keep source inspection in work transaction

lastleg-service/src/main/java/com/baiyue/lastleg/appointmentplanning/AppointmentCargoVerificationService.java

@@ -40,6 +40,10 @@ public class AppointmentCargoVerificationService {
 
     @Transactional(readOnly=true)
     public Context get(String sourceKey,String customerId,String destinationKey) {
+        return inspect(sourceKey,customerId,destinationKey);
+    }
+    /** Caller-owned transaction: a handled read prerequisite must not mark the whole work scan rollback-only. */
+    public Context inspect(String sourceKey,String customerId,String destinationKey) {
         var source=sources.resolve(sourceKey,customerId,destinationKey);
         return inspect(source);
     }

lastleg-service/src/main/java/com/baiyue/lastleg/inboundplan/work/AppointmentWorkDeliveryProvider.java

@@ -64,7 +64,7 @@ public class AppointmentWorkDeliveryProvider implements AppointmentWorkFactGatew
         else {
             for(var source:request.sources()) {
                 try {
-                    var context=cargo.get(source.sourceKey(),source.customerId(),source.destinationKey());
+                    var context=cargo.inspect(source.sourceKey(),source.customerId(),source.destinationKey());
                     fingerprints.add(context.toString()); blocks.addAll(context.blockReasons());
                 } catch(org.springframework.web.server.ResponseStatusException error) {
                     if(!AppointmentWorkSourceAvailability.unresolved(error)) throw error;