Maintenance: distance wear, broken-state burn ×1.5, repair action (ISS-069, v0.39.0)

lib/game/catalog.ts

@@ -122,6 +122,25 @@ export const FUEL_DISCOUNT_PER_REP = 0.005;
 // ponytail: balance-tunable — max refuel price discount (reached at rep ≥ 50).
 export const MAX_FUEL_DISCOUNT = 0.2;
 
+// --- Maintenance (v0.39.0, ISS-069) ---
+
+// ponytail: balance-tunable — health lost per km of landed legs (~13 mid-range EDDF↔LEMD hops to break from full).
+export const WEAR_PER_KM = 0.005;
+
+// ponytail: balance-tunable — burn multiplier for a broken plane (health ≤ 0): it still flies, just thirsty.
+export const BROKEN_BURN_MULTIPLIER = 1.5;
+
+// Broken-state burn factor for one plane's health — the third multiplicative term alongside wind at every
+// per-plane burn site (flyPlane feasibility, refuel forFlight, engine landed fuel + auto-chain, live display).
+export function conditionBurnMultiplier(health: number): number {
+  return health <= 0 ? BROKEN_BURN_MULTIPLIER : 1;
+}
+
+// ponytail: balance-tunable — flat repair cost in € (per-type if balance demands it).
+export const REPAIR_COST = 1_500;
+// ponytail: balance-tunable — how long a repair grounds the plane, sim ms (3 game days).
+export const REPAIR_DURATION_MS = 3 * 86_400_000;
+
 // Snapshot shape of one catalog entry in GET /api/state (v0.10.0): `model` is the
 // id used by buy/dispatch, `label` the display name — clients compute all market
 // previews (buy price, sell payout, refuel cost) from these + the economy constants.