Add tests for customer-scoped vehicle conditions and property gate permissions

- Introduced tests for `SelfserveNonOwnedVehicleWashAccess` to validate customer-scoped conditions for non-owned vehicles.
- Added `SelfservePropertyGatePermissionBypassTest` to ensure proper permission handling for lanes and departments.
- Updated `department_selfserve_vehicle_conditions_o` and routes to prevent cross-customer answer persistence.
- Enhanced `selfserve_wash_flow` with customer-scoped persisted answer logic and improved method parameters for vehicle eligibility and session synchronization.
- Adjusted OpenAPI spec and unit tests to reflect new customer-scoping behavior in self-serve operations.

services/nginx/app/tests/Unit/Selfserve/SelfservePropertyGatePermissionBypassTest.php

@@ -0,0 +1,96 @@
+<?php
+
+app_require('routes/moduleSelfServeRoute.php');
+app_require('modules/selfserve/classes/selfserve_lane.php');
+app_require('objects/department_lanes_o.php');
+app_require('classes/object_property.php');
+
+use classes\object_property;
+use modules\selfserve\classes\selfserve_lane;
+use objects\department_lanes_o;
+use routes\moduleSelfServeRoute;
+
+class SelfservePropertyGatePermissionBypassRouteHarness extends moduleSelfServeRoute
+{
+    public bool $activeWashResult = false;
+    /** @var array<int,array{department_id:int,customer_number:int}> */
+    public array $activeWashChecks = [];
+
+    public function canUsePropertyGate(selfserve_lane $lane, int $customer_number): bool
+    {
+        return $this->canCustomerUsePropertyGateForLane($lane, $customer_number);
+    }
+
+    protected function customerHasActiveSelfServeWashInDepartment(int $department_id, int $customer_number): bool
+    {
+        $this->activeWashChecks[] = [
+            'department_id' => $department_id,
+            'customer_number' => $customer_number,
+        ];
+
+        return $this->activeWashResult;
+    }
+}
+
+class SelfservePropertyGatePermissionBypassDepartmentLaneFake extends department_lanes_o
+{
+    public function __construct(int $department_id)
+    {
+        $this->id = -1;
+        $this->department = new object_property('department_lanes', -1, 'department', 'int');
+        $this->department->set($department_id);
+    }
+
+    public function structure(): void
+    {
+        // Skip database bootstrap for this unit test.
+    }
+}
+
+function selfserve_property_gate_permission_lane_for_department(int $department_id): selfserve_lane
+{
+    $reflection = new ReflectionClass(selfserve_lane::class);
+    /** @var selfserve_lane $lane */
+    $lane = $reflection->newInstanceWithoutConstructor();
+    $lane->id = 77;
+    $lane->department_lane = new SelfservePropertyGatePermissionBypassDepartmentLaneFake($department_id);
+
+    return $lane;
+}
+
+it('allows property gate commands for customers with an active wash in the target department', function (): void {
+    $route = new SelfservePropertyGatePermissionBypassRouteHarness();
+    $route->activeWashResult = true;
+    $lane = selfserve_property_gate_permission_lane_for_department(6);
+
+    expect($route->canUsePropertyGate($lane, 12345679))->toBeTrue();
+    expect($route->activeWashChecks)->toBe([
+        [
+            'department_id' => 6,
+            'customer_number' => 12345679,
+        ],
+    ]);
+});
+
+it('does not bypass property gate permissions without a positive customer number', function (): void {
+    $route = new SelfservePropertyGatePermissionBypassRouteHarness();
+    $route->activeWashResult = true;
+    $lane = selfserve_property_gate_permission_lane_for_department(6);
+
+    expect($route->canUsePropertyGate($lane, 0))->toBeFalse();
+    expect($route->activeWashChecks)->toBe([]);
+});
+
+it('does not bypass property gate permissions when the customer has no active wash in the target department', function (): void {
+    $route = new SelfservePropertyGatePermissionBypassRouteHarness();
+    $route->activeWashResult = false;
+    $lane = selfserve_property_gate_permission_lane_for_department(6);
+
+    expect($route->canUsePropertyGate($lane, 12345679))->toBeFalse();
+    expect($route->activeWashChecks)->toBe([
+        [
+            'department_id' => 6,
+            'customer_number' => 12345679,
+        ],
+    ]);
+});