- 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.
