chore: remove boarding point price levelling

.env

@@ -98,15 +98,6 @@ APP_TRAVEL_PREFER_REMOTE=false
 APP_TRAVEL_ENABLE_FALLBACK=true
 APP_TRAVEL_SNAPSHOT_RETENTION_BUFFER_DAYS=14
 
-# Compensates a BusPro export defect: a <zustieg_rueck> can omit its preis although the booking
-# engine still bills the return-leg Abfahrtsortzuschlag, so we undercharge by exactly one leg.
-# A boarding point costs the same in both directions, so the stated price is applied to both.
-# Off = report the export verbatim. Provisional until the vendor fixes the export; see
-# docs/buspro-database-reference.md section A7.
-# Flipping this needs `app:bpn:xml-cache-invalidate` and `app:bpn:refresh-travel-snapshot`,
-# because the cached travels and TravelSnapshot rows carry the parsed price.
-APP_BPN_LEVEL_BOARDING_POINT_PRICES=true
-
 # Off turns every navigation into a full page load, which the web debug toolbar needs: its loader
 # script never runs on a boosted body swap. Explicit hx-get/hx-post requests are unaffected.
 # Only for local debugging; prod and the boosted code paths (HxRedirectResponse, error modal) need it on.

config/services.yaml

@@ -201,10 +201,6 @@ services:
         arguments:
             $retentionBufferDays: '%travel_snapshot_retention_buffer_days%'
 
-    App\BusProNet\XmlParser\TravelParser:
-        arguments:
-            $levelBoardingPointPrices: '%env(bool:APP_BPN_LEVEL_BOARDING_POINT_PRICES)%'
-
     App\Service\TravelDataProvider:
         arguments:
             $logger: '@monolog.logger.core'

docs/buspro-database-reference.md

@@ -225,16 +225,12 @@ JOIN dbo.ZustiegPreis zp ON zp.IDArtZustiegPreis_FS=lb.IDArtZustiegPreis_FS
 WHERE l.IDLeistung IN (@OutboundServiceId,@ReturnServiceId);
 ```
 
-**V 2026-09-28 — the XML export can omit the return-leg price.** Since one price row is
-surfaced twice, an asymmetric pair is an export defect: on products 701 and 2435 a
-`<zustieg_rueck>` carries no `preis` although the engine still bills the return
-`Abfahrtsortzuschlag`, so reading the export verbatim undercharges by one leg. Measured over
-all exports, a stated return price never differs from its outbound counterpart (510 pairs,
-zero counter-examples). `TravelParser` therefore levels a boarding point's price across both
-directions, switchable through `APP_BPN_LEVEL_BOARDING_POINT_PRICES` while the defect is open
-with the vendor. Flipping the flag needs `app:bpn:xml-cache-invalidate` and
-`app:bpn:refresh-travel-snapshot`. A point appearing **only** in `zustiege_rueck` without a
-price cannot be priced from our side — that is a catalog job.
+**V 2026-10-02 — an unpriced return leg is free.** The export can state a `preis` on the
+outbound `<zustieg>` but none on the matching `<zustieg_rueck>` (seen on products 701 and
+2435). The booking engine bills a return `Abfahrtsortzuschlag` only where the return entry
+states a price, so the export is read verbatim, per leg. A missing return price is a catalog
+omission for the office to fix, not something to compensate locally: pricing the return leg
+from the outbound one makes the booking inquiry fail with a price mismatch.
 
 **N — the departure surcharge is computed.** Booking responses carry a position
 `art="SON" unterart="TRA"` (*Abfahrtsortzuschlag*) with no matching row type: `ArtZuschlag`

src/BusProNet/XmlParser/TravelParser.php

@@ -29,20 +29,8 @@ class TravelParser extends AbstractParser
         Constants::PSEUDO_PRICE_ROOM_CODE,
     ];
 
-    /**
-     * `$levelBoardingPointPrices` carries no default on purpose: a hand-built parser would
-     * otherwise silently ignore APP_BPN_LEVEL_BOARDING_POINT_PRICES and price one travel tier
-     * differently from the others. The registry gave up its own default along with it, so that
-     * there is one way to build this class — through the container, or explicitly in a test.
-     *
-     * @param bool $levelBoardingPointPrices Whether to compensate the BusPro export defect that
-     *                                       omits a boarding point's return-leg price. The
-     *                                       container wires it from
-     *                                       APP_BPN_LEVEL_BOARDING_POINT_PRICES.
-     */
     public function __construct(
         private readonly AgeConstraintParserRegistry $ageConstraintRegistry,
-        private readonly bool $levelBoardingPointPrices,
     ) {
     }
 
@@ -99,11 +87,6 @@ class TravelParser extends AbstractParser
         $travel->pickups = $this->getPickups($node->filterXPath('.//zustiege/zustieg'), $dateFrom, true);
         $travel->dropOffs = $this->getPickups($node->filterXPath('.//zustiege_rueck/zustieg_rueck'), $dateTo, false);
 
-        // A boarding point costs the same in both directions
-        if ($this->levelBoardingPointPrices) {
-            $this->applyBoardingPointPriceLevelling($travel->pickups, $travel->dropOffs);
-        }
-
         $travel->guide = $this->getGuide($node);
 
         return $travel;
@@ -466,47 +449,6 @@ class TravelParser extends AbstractParser
         }
     }
 
-    /**
-     * Levels the price of a boarding point across both travel directions.
-     *
-     * A boarding point is either free or costs the same in both directions:
-     * `ZustiegPreis` is keyed by (point, tariff scheme) and holds no per-leg price, so
-     * BusPro bills an `Abfahrtsortzuschlag` per leg at one and the same rate. An
-     * asymmetric pair is therefore always an export defect — on some products a
-     * `<zustieg_rueck>` carries no `preis` although the engine still charges the return
-     * leg — and the stated price is the one that applies to both legs.
-     *
-     * Where both directions state a price they agree in practice; the outbound one wins
-     * to keep the outcome deterministic. Points without a counterpart are left as they are.
-     *
-     * Compensating the defect locally is provisional, so it is switchable: with
-     * `$levelBoardingPointPrices` off the export is reported verbatim and the affected
-     * travels undercharge the return leg again. See
-     * `docs/buspro-database-reference.md` section A7.
-     *
-     * @param array<int, Pickup> $pickups  Pickups indexed by ID (modified in place)
-     * @param array<int, Pickup> $dropOffs Drop-offs indexed by ID (modified in place)
-     */
-    private function applyBoardingPointPriceLevelling(array $pickups, array $dropOffs): void
-    {
-        foreach ($dropOffs as $pickupId => $dropOff) {
-            if (false === isset($pickups[$pickupId])) {
-                continue;
-            }
-
-            $pickup = $pickups[$pickupId];
-            $price = $pickup->price ?? $dropOff->price;
-
-            $pickup->price = $price;
-            $pickup->priceOutbound = $price;
-            $pickup->priceInbound = $price;
-
-            $dropOff->price = $price;
-            $dropOff->priceOutbound = $price;
-            $dropOff->priceInbound = $price;
-        }
-    }
-
     /**
      * Adjusts time-only pickup entries for overnight bus routes.
      *

src/Service/ParticipantPricingCalculator.php

@@ -194,7 +194,7 @@ class ParticipantPricingCalculator
             }
         }
 
-        // Boarding surcharges are charged per leg, at the same rate in both directions
+        // Boarding surcharges are charged per leg, each at the price its own direction states
         $hasOutboundBus = null !== $participant->transportationOutbound
             && DirectionMapper::isBus($participant->transportationOutbound->subType);
         $hasInboundBus = null !== $participant->transportationInbound

src/Service/ProductExportBuilder.php

@@ -31,10 +31,6 @@ use Symfony\Contracts\Cache\ItemInterface;
  *
  * Hotels are identified by the code and id on the travel XML's own `<hotel>` node, so
  * unlike the travel export no row depends on hotel.xml master data.
- *
- * Boarding-point prices are the export's, verbatim. APP_BPN_LEVEL_BOARDING_POINT_PRICES
- * is a booking-path compensation and is deliberately not applied: TravelParser::getPickups()
- * does not level, only TravelParser::parse() does.
  */
 class ProductExportBuilder
 {

tests/BusProNet/XmlParser/TravelParserTest.php

@@ -357,49 +357,23 @@ class TravelParserTest extends TestCase
         $this->assertNull($travel->status); // No status_hin node should result in null
     }
 
-    public function testDropOffsInheritThePickupPriceWhenTheReturnLegStatesNone(): void
+    public function testBoardingPricesAreReportedVerbatimPerLeg(): void
     {
-        // Shape of product 701: the return boarding points carry no preis although
-        // BusPro bills an Abfahrtsortzuschlag for the return leg as well.
+        // BusPro bills the return-leg Abfahrtsortzuschlag only where the return entry
+        // states a preis, so an unpriced return leg is free and each leg keeps its own price.
         $travel = $this->parseTravelWithBoardingPoints(
             '<zustieg idbuspro="18" zeit="12.12.2026 21:45:00" preis="17,90" />
-             <zustieg idbuspro="27" zeit="03:45" />',
+             <zustieg idbuspro="4" zeit="12.12.2026 22:30:00" preis="17,90" />',
             '<zustieg_rueck idbuspro="18" />
-             <zustieg_rueck idbuspro="27" />'
-        );
-
-        $this->assertSame(17.9, $travel->dropOffs[18]->price);
-        $this->assertSame(17.9, $travel->dropOffs[18]->priceInbound);
-        $this->assertSame(17.9, $travel->pickups[18]->priceInbound);
-
-        // A point that is free outbound stays free on the return leg
-        $this->assertNull($travel->dropOffs[27]->price);
-        $this->assertNull($travel->pickups[27]->priceInbound);
-    }
-
-    public function testPickupInheritsTheDropOffPriceWhenTheOutboundLegStatesNone(): void
-    {
-        // The mirror image of the product 701 defect: an asymmetric pair is a defect
-        // whichever leg is missing, so the stated price applies to both.
-        $travel = $this->parseTravelWithBoardingPoints(
-            '<zustieg idbuspro="18" zeit="12.12.2026 21:45:00" />',
-            '<zustieg_rueck idbuspro="18" preis="17,90" />'
+             <zustieg_rueck idbuspro="4" preis="9,90" />'
         );
 
         $this->assertSame(17.9, $travel->pickups[18]->price);
-        $this->assertSame(17.9, $travel->pickups[18]->priceOutbound);
-        $this->assertSame(17.9, $travel->dropOffs[18]->price);
-    }
+        $this->assertNull($travel->pickups[18]->priceInbound);
+        $this->assertNull($travel->dropOffs[18]->price);
 
-    public function testConflictingBoardingPricesResolveToTheOutboundOne(): void
-    {
-        $travel = $this->parseTravelWithBoardingPoints(
-            '<zustieg idbuspro="18" zeit="12.12.2026 21:45:00" preis="17,90" />',
-            '<zustieg_rueck idbuspro="18" preis="9,90" />'
-        );
-
-        $this->assertSame(17.9, $travel->pickups[18]->price);
-        $this->assertSame(17.9, $travel->dropOffs[18]->price);
+        $this->assertSame(17.9, $travel->pickups[4]->price);
+        $this->assertSame(9.9, $travel->dropOffs[4]->price);
     }
 
     public function testDropOffWithoutAPickupCounterpartKeepsItsOwnPrice(): void
@@ -412,27 +386,12 @@ class TravelParserTest extends TestCase
         $this->assertSame(5.9, $travel->dropOffs[99]->price);
     }
 
-    public function testBoardingPricesAreReportedVerbatimWhenLevellingIsDisabled(): void
+    private function createParser(): TravelParser
     {
-        // The levelling compensates a vendor export defect and is therefore switchable.
-        // With it off the product 701 shape undercharges the return leg again.
-        $travel = $this->parseTravelWithBoardingPoints(
-            '<zustieg idbuspro="18" zeit="12.12.2026 21:45:00" preis="17,90" />',
-            '<zustieg_rueck idbuspro="18" />',
-            $this->createParser(levelBoardingPointPrices: false)
-        );
-
-        $this->assertSame(17.9, $travel->pickups[18]->price);
-        $this->assertNull($travel->pickups[18]->priceInbound);
-        $this->assertNull($travel->dropOffs[18]->price);
+        return new TravelParser(new AgeConstraintParserRegistry());
     }
 
-    private function createParser(bool $levelBoardingPointPrices = true): TravelParser
-    {
-        return new TravelParser(new AgeConstraintParserRegistry(), $levelBoardingPointPrices);
-    }
-
-    private function parseTravelWithBoardingPoints(string $pickups, string $dropOffs, ?TravelParser $parser = null): Travel
+    private function parseTravelWithBoardingPoints(string $pickups, string $dropOffs): Travel
     {
         $xmlContent = '<?xml version="1.0" encoding="utf-8"?>
 <reisen>
@@ -447,7 +406,7 @@ class TravelParserTest extends TestCase
 
         $crawler = XmlCrawlerFactory::create($xmlContent);
 
-        return ($parser ?? $this->parser)->parse($crawler->filterXPath('//reise/termin')->first());
+        return $this->parser->parse($crawler->filterXPath('//reise/termin')->first());
     }
 
     public function testGetPickupsAdjustsOvernightTimes(): void

tests/Form/Service/ParticipantFieldOptionsProviderBabyTest.php

@@ -488,7 +488,7 @@ class ParticipantFieldOptionsProviderBabyTest extends TestCase
      */
     private function createTravelWithExportedSkiPasses(array $serviceIds): Travel
     {
-        $parser = new TravelParser(new AgeConstraintParserRegistry(), true);
+        $parser = new TravelParser(new AgeConstraintParserRegistry());
         $crawler = XmlCrawlerFactory::create(file_get_contents('/var/www/html/var/xmlexport/Ziel_2456.xml'));
         $travelNode = $crawler->filterXPath('//reise/termin')->first();
         $travel = $parser->parse($travelNode);

tests/Service/ProductExportBuilderTest.php

@@ -288,8 +288,7 @@ class ProductExportBuilderTest extends TestCase
 
         return (new ProductExportBuilder(
             $pickupLoader,
-            // Levelling on, to prove the export does not go through it.
-            new TravelParser(new AgeConstraintParserRegistry([]), true),
+            new TravelParser(new AgeConstraintParserRegistry([])),
             new ProductExportParser(),
             $filesystem,
             new TagAwareAdapter(new ArrayAdapter()),

tests/Service/TravelExportBuilderTest.php

@@ -264,7 +264,7 @@ class TravelExportBuilderTest extends TestCase
         return (new TravelExportBuilder(
             $hotelLoader,
             $pickupLoader,
-            new TravelParser(new AgeConstraintParserRegistry([]), false),
+            new TravelParser(new AgeConstraintParserRegistry([])),
             $filesystem,
             new TagAwareAdapter(new ArrayAdapter()),
             new NullLogger(),