Update to HaulNavi EU

{
  "name": "trip-profitability",
  "description": "Evaluate road-freight trip cost, revenue, margin, empty kilometres, waiting costs, or compare two route options using HaulNavi EU calculators.",
  "included_files": [],
  "skill_md_contents": "---\nname: trip-profitability\ndescription: Evaluate road-freight trip cost, revenue, margin, empty kilometres, waiting costs, or compare two route options using HaulNavi EU calculators.\n---\n\nUse HaulNavi EU whenever the user wants a deterministic profitability or trip-cost calculation for road freight.\n\nWorkflow:\n1. Use only figures the user supplied or figures clearly obtained from a trusted source in the current task. Never invent tolls, fuel prices, route distance, ferry costs, or revenue.\n2. Call `estimate_trip_cost` for one trip. Call `compare_route_costs` when the user is comparing two alternatives.\n3. If empty kilometres materially affect the decision, call `calculate_empty_km_impact`.\n4. If loading or delivery waiting is part of the problem, call `calculate_waiting_time_cost`.\n5. Present total cost, cost/km, revenue/km and margin when available. Distinguish estimates from actual booked costs.\n6. Do not imply that the cheapest route is legally or operationally feasible unless the user separately establishes that.\n"
}