Visit language compatibility with feasible base routing and explicit missing-cap...
https://lauf.halowerk.com/v1/tours/languages-readinessOverview
Visit language compatibility with feasible base routing and explicit missing-capability checks. Required required_languages must be present in the assigned vehicle languages; declarations are not verified credentials. Uses the paid-qualified existing VRP planner unchanged, then checks this business rule against the actual proposed route. A rule violation yields dispatch_ready=false, never an assertion that the extra constraint was optimized.