Step 27.7: balance and regression

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

DECISIONS.md

@@ -2034,3 +2034,10 @@ Implementation decisions not spelled out in `memory-bank/implementation-plan.md`
 - **Only automatic bookings are logged as "booked"**: the player's own bookings are their decisions, already on screen. Start, finish and waiting for funds are logged for both.
 - **"Service finished" sits beside the repair and upgrade lines** it covers, so the costs stay where they were (the repair line with the repair's cost, the start line with the whole charge).
 - **The problems are found from the state** like the others (decision 0.5.140): a booking waiting for funds, or an unstarted one whose HQ is out of reach, wherever the ship is.
+
+## Step 27.7
+
+- **Asleep, a service trip flies empty.** The CR lets service trips go on during fleet sleep, but taking a paid job to the HQ would earn while the fleet is quiet, breaking CR-024's week-away bound (it failed for one seed). Awake, the pilot still takes the best job that ends at the HQ.
+- **"Neglected" means a second trip in a row below 25% while the repair is affordable** above the spending floor: the first such trip is usually the one to the HQ.
+- **The away median drops from 60% to 49% of active play**: until now the simulator never repaired away hulls, so the old figure left out repair costs and shop time. Still inside 40–80%.
+- **Amendments go on each amended CR** as "Amended by CR-027" lines (CR-023 and CR-026 get an Amendments section).

memory-bank/change-requests/CR-009-ship-upgrades.md

@@ -68,6 +68,7 @@ Record these in `DECISIONS.md` and `implementation-plan.md` §0.5.
 - **Test:** All upgrades validate. Every upgrade affects a stat that exists on ShipModel. Tests for decision 0.5.49 (all three inequalities). Tests for decision 0.5.50: sampling Earth–Mars distance monthly over two game years, a maxed Courier is in range on at least one sample and out of range on at least one sample; a Courier with fuel tanks at level 2 is never in range.
 - **Amended by CR-012:** Caps follow the amended 0.5.49/0.5.50 (this plan's 0.5.67/0.5.68): three more distinctness inequalities, Courier-to-Mars measured from Earth over 16 game years; the Courier's tanks are 450 % per level (Step 10L.5).
 - **Amended by CR-026:** Hull Plating is added (+1 hull rating a level, three levels, the usual costs and shop times); upgrades may add a flat amount (`flatPerLevel`) instead of a percent.
+- **Amended by CR-027:** Upgrades (one level a visit) and repairs can be booked from anywhere for an HQ; the work starts, and is charged, when the ship is next idle there.
 
 ### Step 10F.2 — Sim: effective stats
 - Add a pure function that returns a ship's effective stats from its model and installed upgrade levels.

memory-bank/change-requests/CR-021-independent-pilots.md

@@ -155,6 +155,7 @@ Removes "automation / standing routes and auto-accept rules" from the deferred l
 - **Test:** Component tests: the chip counts down and disappears when the window ends; the indicator appears for slow catch-ups only; the logbook lists each pilot's jobs, deadheads, rests, XP, and current location, and totals match the sum of entries.
 - **Amended by CR-024:** The "while you were away" screen opens with a banner when the fleet went quiet ("Your fleet went quiet on [date, time] after [24 h] without orders.") and a Back to work button; sleeping Independent pilots read "Waiting for orders".
 - **Amended by CR-025:** The per-pilot logbook moves from the pop-up to the Logbook screen, built from logbook entries and covering every pilot (Step 25.4).
+- **Amended by CR-027:** A booking steers an Independent pilot's decisions: only jobs ending at the booked HQ, else a deadhead there, then waiting there for the work; out of reach, the usual choice.
 
 ### Step 19.8 — Balance
 - Extend the Phase 12 balance script with an "away" scenario: the player sets all hired pilots to Independent and closes the app for 8 real hours.

memory-bank/change-requests/CR-023-shop-time-rest.md

@@ -52,6 +52,10 @@ Record in `DECISIONS.md` and `implementation-plan.md` §0.5 with the next free n
 - Run the full suite.
 - **Test:** CI is green. Manual check: fly a pilot close to the duty limit, start an upgrade at the HQ, and confirm they're ready to fly the moment the upgrade finishes.
 
+## Amendments
+
+- **Amended by CR-027:** Booked service overlaps rest the same way: a rest due on arrival or already running ends with the service, so the pilot is free at the later end.
+
 ## 5. Out of scope
 
 Rest facilities at HQs, shortening shop times, and anything else in `implementation-plan.md` §0.3.

memory-bank/change-requests/CR-024-fleet-sleep.md

@@ -74,6 +74,7 @@ Record these in `DECISIONS.md` and `implementation-plan.md` §0.5, using the nex
 
 ### Step 22.5 — Client: return banner, status, and setting
 - **Amended by CR-025:** The sleep banner stays at the top of the highlights pop-up, under its title.
+- **Amended by CR-027:** Service trips go on while the fleet is asleep (flying empty, so the fleet earns nothing), and `bookService`, `cancelBooking` and `setAutoRepair` are manual decisions.
 
 - The "while you were away" screen shows the sleep banner and "Back to work" button when the fleet went quiet. HQ shows "Fleet asleep — waiting for your orders" with the same button while asleep.
 - Pilot status lines show "Waiting for orders" for sleeping Independent pilots.

memory-bank/change-requests/CR-025-short-away-summary.md

@@ -82,6 +82,7 @@ Record these in `DECISIONS.md` and `implementation-plan.md` §0.5, using the nex
 
 ### Step 23.2 — Sim: summary builder
 - **Amended by CR-026:** Events are logbook entries; good ones and any that hurt a hull are highlights just below level-ups, and a short absence lists its trips' events (not counted towards the 3).
+- **Amended by CR-027:** Service is logged (automatic bookings, starts, finishes, waiting for funds), and booked service waiting for funds or out of reach is a highlight.
 
 - A pure function that turns the entries for an absence into: duration, totals, up to 3 highlights in priority order with an overflow count, up to 5 pilot lines sorted by net profit with an overflow line, the idle-pilots line, and the "short absence" direct list when there are 3 events or fewer.
 - **Test:** With 50 pilots' worth of entries, the result has exactly 5 pilot lines and an overflow line whose totals equal the rest. Highlights follow the priority order and cap at 3 with the right overflow count. Totals equal the sum of entries. With 2 events, the result is the direct list. Net matches the delivery-summary calculation.

memory-bank/change-requests/CR-026-random-events-hull.md

@@ -205,6 +205,10 @@ Removes "random events" from the deferred list (`implementation-plan.md` §0.3).
 | CR-023                        | Event results become highlights.                                                           |
 | `game-design-document.md` §13 | Updated by the designer.                                                                   |
 
+## Amendments
+
+- **Amended by CR-027:** Hull damage and wear that take an Independent crew's hull below the auto-repair threshold (40% by default) book a repair at the nearest reachable HQ; Manual crews see "Repair recommended".
+
 ## 10. Out of scope
 
 Losing ships or pilots, insurance, piracy, reputation effects, multi-step event chains, events at docked locations (depot shortages, price spikes), pilot traits that change defaults, and anything else in `implementation-plan.md` §0.3.

memory-bank/implementation-plan.md

@@ -213,7 +213,7 @@ These answer the pre-build review. Log each one in `DECISIONS.md` as it is imple
 155. **Manual crews** (CR-027). A booking on a Manual pilot's ship is a reminder (tags on the ship and in the dispatch sheet); the work starts when the ship is next idle at that HQ.
 156. **Payment** (CR-027). Player bookings are charged whenever credits cover them; automatic ones only if credits stay at or above the NPC spending floor; a ship that can't pay waits at the HQ ("Waiting for funds"), logged and highlighted, and starts as soon as it can.
 157. **Auto-repair** (CR-027). Per ship, on at 40% by default (10–90% in steps of 5): with an Independent crew, a hull dropping below it adds a repair booking at the nearest reachable HQ (or to the ship's booking); with a Manual crew it shows "Repair recommended" instead.
-158. **Sleep exception** (CR-027). Service trips continue while the fleet is asleep; afterwards the pilot waits for orders.
+158. **Sleep exception** (CR-027). Service trips continue while the fleet is asleep; afterwards the pilot waits for orders. Asleep, the trip flies empty (Step 27.7): a paid job to the HQ would earn while the fleet is quiet (decision 0.5.137).
 159. **No double waiting** (CR-027). Rest and service run at the same time when they coincide; the pilot is free when the later ends, and a service long enough to count as rest (decision 0.5.135) resets duty and ends any remaining rest.
 
 ### 0.6 Translating change requests written for the server (CR-014 §7)

memory-bank/progress.md

@@ -575,4 +575,4 @@ Spec: `memory-bank/change-requests/CR-027-service-bookings.md` (received as "CR-
 - [x] **Step 27.4 — Engine: Independent pilots and catch-up.** An Independent pilot's decision passes the ship's unstarted booking to `chooseAction`, so they take only jobs ending at the booked HQ, else deadhead there, and wait there for the work; out of reach, they work as usual. A pilot on a service trip (booked, reachable, not there yet) keeps deciding while the fleet is asleep, up to the 7-day cap; once the work starts they're back under the sleep rule. Tests (`packages/engine/test/service-routing.test.ts`): the job to the HQ over a richer one, with the work on landing; the deadhead; the service trip while asleep, and nothing after; an HQ out of reach; the same save caught up at once or an hour at a time.
 - [x] **Step 27.5 — Client: Service section and tags.** `apps/web/src/components/Service.tsx`: the Service section in the ship's Upgrades sheet (the booking's items, HQ, estimate and status; Book service with a repair box, an upgrade picker (the next level of each) and an HQ picker defaulting to the nearest reachable (`defaultHq`, the sim's `nearestReachableHq`), with the estimate; Change and Cancel booking until the work starts; the auto-repair box and a 10–90% slider in steps of 5). `serviceTag` on the Fleet card and in the dispatch sheet ("Service booked: Engine Tuning 2 at Earth", "Repair recommended"); `serviceStatus` ("Heading to Earth for service", "In the shop at Earth (resting)", "Waiting for funds: Repair at Earth", "Can't reach Earth for service") leads an Independent pilot's status line. Tests (`apps/web/test/service.test.tsx`): booking with the estimate and the nearest HQ; a booking's items and status, Change and Cancel calling the engine; no change once started; the slider and the box; the Fleet tag; each status wording; the pilot line; the dispatch sheet tag. Screenshots: `docs/screenshots/27-5-*` (Repair recommended, the booking form, a booked ship's card and sheet; phone and desktop).
 - [x] **Step 27.6 — Client: Logbook and summaries.** Logbook lines for `service` entries: "Iron Mule: Repair booked automatically at Earth", "service started at Earth (Repair + Engine Tuning), 3,600 cr", "service finished at Earth (…)", "waiting for funds for Repair at Earth". New away problems from the state (`awayProblems`, schema and sim `AwayProblem`): `service-waiting-funds` and `service-cant-reach`, with wording in `awayWording.highlights` ("Iron Mule is waiting for funds: Repair at Earth", "Iron Mule can't reach Jupiter Cloud Platform for its booked service"). Tests: the engine reports each problem (`packages/engine/test/service.test.ts`); the four logbook lines and both highlights render (`apps/web/test/service.test.tsx`). Screenshots: `docs/screenshots/27-6-logbook-*`.
-- [ ] Step 27.7 — Balance and regression
+- [x] **Step 27.7 — Balance and regression.** The balance simulator's away scenario now runs auto-repair at 40% with events on: hull loss that crosses the threshold books a repair at the nearest reachable HQ (`bookAutoRepair`), the pilot's decisions pass the booking to `chooseAction`, a ship idle at its HQ starts the repair when credits stay above the spending floor (`startServices`), and service trips go on while asleep. Results gain `service` (bookings, services, the most trips in a row an Independent ship flew below 25% with its repair affordable); a second such trip is a `hull-neglected` violation. Measured over the 7 balance seeds, 8 hours away (`balance/measure-service.ts`): 3–4 bookings and as many repairs a run, at most 1 trip below 25%, no violations; away earns a median 49% of active play (target 40–80%; 60% before, when away hulls were never repaired). Asleep, a service trip flies empty, so the week-away bound (CR-024) still holds. Amendments (CR-027 §8) added to CR-009, CR-021, CR-023, CR-024, CR-025 and CR-026. Test: `packages/sim/test/balance.test.ts` (no ship more than one trip below 25%, bookings made and done, the away ratio and the week bound), the engine sleep test (an empty flight to the HQ with a paid job home on the board); full suite green.

packages/engine/src/game/catchup.ts

@@ -146,7 +146,9 @@ function decide(save: SaveDocument, pilot: SavedPilot, t: RealTime, viewed: stri
   }
 
   const random = replayRandom(pilot.id, t);
-  const board = locationBoard(save, ship.locationId, random, t).contracts;
+  // Asleep, only a service trip goes on, and it flies empty: no pay while the fleet is quiet (CR-024).
+  const asleep = t >= sleepsAt(save, t);
+  const board = asleep ? [] : locationBoard(save, ship.locationId, random, t).contracts;
   const action = chooseAction(
     {
       ship: { ...shipState(ship), tank: { fuelFu: ship.fuelFu, avgPrice: ship.fuelAvgPrice } },

packages/engine/test/service-routing.test.ts

@@ -92,9 +92,11 @@ describe("Independent pilots and booked service (Step 27.4, decision 0.5.154)",
     expect(first.record.destinationId).toBe("earth");
   });
 
-  it("still flies to booked service while the fleet is asleep, then waits", async () => {
+  it("still flies to booked service while the fleet is asleep, empty, then waits", async () => {
     const test = await bookedPilot();
-    await putBoard(test.app, [], test.clock.now, "moon");
+    // A paid job home is on the board, but asleep the fleet earns nothing (CR-024).
+    const home = testContract({ id: "moon:home", originId: "moon", destinationId: "earth" });
+    await putBoard(test.app, [home], test.clock.now, "moon");
     await edit(test.app, (save) => {
       // An automatic booking (not a manual decision), and the fleet has gone quiet.
       shipPa(save).booking = {
@@ -113,6 +115,7 @@ describe("Independent pilots and booked service (Step 27.4, decision 0.5.154)",
     await test.app.call("getPlayerState", {});
     const save = await readSave(test.app);
     expect(tripsOf(save).map((d) => d.record.destinationId)).toEqual(["earth"]);
+    expect(tripsOf(save)[0]!.record.contract).toBeNull();
     expect(serviceLog(save)).toEqual(["started", "finished"]);
     expect(shipPa(save).locationId).toBe("earth");
   });

packages/sim/balance/measure-service.ts

@@ -0,0 +1,24 @@
+import { simulate } from "./simulate";
+
+// Away service balance by hand (Step 27.7): `tsx balance/measure-service.ts <hours away>`.
+// Independent fleets with events on and auto-repair at the default threshold.
+const SEEDS = [12345, 777, 4242, 99, 2026, 31337, 8];
+const HOURS = Number(process.argv[2] ?? 8);
+const window = (worldSeed: number, mode: "active" | "away") =>
+  simulate({
+    worldSeed,
+    policy: "lighter-first",
+    durationMs: (3 + HOURS) * 3_600_000 + 3_600_000,
+    scenario: { atMinute: 180, minutes: HOURS * 60, mode },
+  });
+for (const seed of SEEDS) {
+  const away = window(seed, "away");
+  const active = window(seed, "active");
+  const ratio = away.scenarioEarnings! / active.scenarioEarnings!;
+  console.log(
+    `seed ${seed}: away ${away.scenarioEarnings} / active ${active.scenarioEarnings} = ${(ratio * 100).toFixed(0)}%, ` +
+      `bookings ${away.service.bookings}, services ${away.service.started}, ` +
+      `most low-hull trips ${away.service.maxLowHullTrips}, repairs ${away.events.windowRepairSpend} cr, ` +
+      `violations ${away.violations.map((v) => `${v.rule} ${v.detail}`).join("; ") || "none"}`,
+  );
+}

packages/sim/balance/run.ts

@@ -49,6 +49,11 @@ console.log(
     `ratio ${((away.scenarioEarnings! / active.scenarioEarnings!) * 100).toFixed(0)}% (target 40–80%), ` +
     `violations ${away.violations.length}`,
 );
+console.log(
+  `away service (CR-027): ${away.service.bookings} auto-repair bookings, ${away.service.started} done, ` +
+    `most trips in a row below 25% hull ${away.service.maxLowHullTrips} (≤ 1), ` +
+    `repairs ${away.events.windowRepairSpend} cr`,
+);
 
 // A week away (CR-024 Step 24.7): the fleet goes quiet 24 hours into the absence.
 const absence = (hours: number) =>

packages/sim/balance/simulate.ts

@@ -12,7 +12,10 @@ import { content as defaultContent, type ShipModel } from "@deadhead/content";
 import {
   affordableRefuel,
   applyEventOption,
+  autoRepairBooks,
+  canReachHq,
   hullAfterDamage,
+  nearestReachableHq,
   repairCost,
   repairShopMs,
   rollTripEvent,
@@ -176,6 +179,12 @@ export interface SimulationResult {
     windowDefaultValue: number;
     windowBestValue: number;
   };
+  /**
+   * Away service (CR-027 Step 27.7): automatic repair bookings and services
+   * started, and the most trips in a row an Independent ship flew below
+   * `needsRepairBelowPct` while the credits covered its repair.
+   */
+  service: { bookings: number; started: number; maxLowHullTrips: number };
 }
 
 interface SimShip extends ShipState {
@@ -187,6 +196,10 @@ interface SimShip extends ShipState {
   trips: number;
   /** Trips since its last event (CR-026 cooldown); absent: past the cooldown. */
   quietTrips?: number;
+  /** A repair booked by auto-repair (CR-027), at this HQ. */
+  booking?: { hqId: string } | null;
+  /** Trips in a row flown below `needsRepairBelowPct` with the repair affordable. */
+  lowHullTrips?: number;
 }
 
 interface SimPilot {
@@ -446,6 +459,9 @@ export function simulate(options: SimulationOptions): SimulationResult {
     windowBestValue: 0,
   };
   const inScenario = () => windowOpen;
+  const serviceStats = { bookings: 0, started: 0, maxLowHullTrips: 0 };
+  // Every ship on auto-repair at the default threshold (decision 0.5.157).
+  const autoRepair = { on: true, thresholdPct: config.autoRepair.defaultThresholdPct };
 
   /** What an option is worth to the player: pay, less losses, hull repairs and time. */
   function optionValue(record: DispatchRecord, applied: AppliedEvent, ship: SimShip): number {
@@ -462,6 +478,7 @@ export function simulate(options: SimulationOptions): SimulationResult {
   function launch(ship: SimShip, pilot: SimPilot, record: DispatchRecord) {
     let flown = record;
     let applied: AppliedEvent | null = null;
+    if (away && !pilot.isAvatar) countLowHullTrip(ship);
     eventStats.trips++;
     if (inScenario()) eventStats.windowTrips++;
     if (eventMode !== "off" && now >= eventsFrom) {
@@ -514,7 +531,7 @@ export function simulate(options: SimulationOptions): SimulationResult {
           eventStats.windowBestValue += optionValue(record, bestChoice, ship);
         }
         applied = eventMode === "best" ? bestChoice : defaultChoice;
-        loseHull(ship, applied.hullLoss);
+        loseHull(ship, applied.hullLoss, record.destinationId);
         const extra = Math.min(applied.extraFuelFu, ship.tank.fuelFu);
         ship.tank = { ...ship.tank, fuelFu: ship.tank.fuelFu - extra };
         flown = {
@@ -530,10 +547,14 @@ export function simulate(options: SimulationOptions): SimulationResult {
     flights.push({ record: flown, shipId: ship.id, pilotId: pilot.id, event: applied });
   }
 
-  /** A hull hit or wear; in the scenario window, counted at what repairing it costs. */
+  /**
-  function loseHull(ship: SimShip, points: number) {
+   * A hull hit or wear; in the scenario window, counted at what repairing it
+   * costs. Away, an Independent crew's ship books its repair (CR-027).
+   */
+  function loseHull(ship: SimShip, points: number, place: string) {
     const before = ship.hullConditionPct ?? 100;
     ship.hullConditionPct = hullAfterDamage(before, points, config);
+    if (away) bookAutoRepair(ship, before, place);
     if (inScenario()) {
       const lost = before - ship.hullConditionPct;
       eventStats.windowHullCost +=
@@ -541,6 +562,64 @@ export function simulate(options: SimulationOptions): SimulationResult {
     }
   }
 
+  /** Auto-repair (decision 0.5.157): at the nearest HQ reachable from where the ship lands. */
+  function bookAutoRepair(ship: SimShip, hullBefore: number, place: string) {
+    const pilot = pilots.find((p) => p.assignedShipId === ship.id);
+    if (!pilot || pilot.isAvatar) return;
+    const books = autoRepairBooks({
+      hullBefore,
+      hullAfter: ship.hullConditionPct ?? 100,
+      autoRepair,
+      pilotMode: "independent",
+      booking: ship.booking ? { repair: true } : null,
+    });
+    if (!books) return;
+    const at = { ...ship, locationId: place, inFlight: false };
+    ship.booking = { hqId: nearestReachableHq(at, [...bays], discovered, content) ?? home };
+    serviceStats.bookings++;
+    log(
+      `book repair ${ship.id} ${ship.modelId} at ${ship.booking.hqId} (${ship.hullConditionPct}%)`,
+    );
+  }
+
+  /** A booked repair starts when the ship is idle at its HQ, above the spending floor (decision 0.5.156). */
+  function startServices(): boolean {
+    let acted = false;
+    for (const ship of ships) {
+      const booking = ship.booking;
+      if (!booking || ship.inFlight || ship.locationId !== booking.hqId) continue;
+      if (ship.inShopUntil != null && ship.inShopUntil > now) continue;
+      const hull = ship.hullConditionPct ?? 100;
+      const cost = repairCost(model(ship.modelId), hull, config);
+      if (credits - cost < floor) continue;
+      credits -= cost;
+      eventStats.repairSpend += cost;
+      if (inScenario()) eventStats.windowRepairSpend += cost;
+      ship.inShopUntil = now + repairShopMs(hull, config);
+      ship.hullConditionPct = 100;
+      ship.booking = null;
+      serviceStats.started++;
+      log(`service ${ship.id} ${ship.modelId} from ${hull}% for ${cost}  credits ${credits}`);
+      acted = true;
+    }
+    return acted;
+  }
+
+  /** A trip flown below "Needs repair" while the credits would cover the repair (Step 27.7). */
+  function countLowHullTrip(ship: SimShip) {
+    const hull = ship.hullConditionPct ?? 100;
+    const affordable = credits - repairCost(model(ship.modelId), hull, config) >= floor;
+    ship.lowHullTrips =
+      hull < config.hull.needsRepairBelowPct && affordable ? (ship.lowHullTrips ?? 0) + 1 : 0;
+    serviceStats.maxLowHullTrips = Math.max(serviceStats.maxLowHullTrips, ship.lowHullTrips);
+    if (ship.lowHullTrips > 1) {
+      violate(
+        "hull-neglected",
+        `${ship.id} ${ship.modelId} at ${hull}%, trip ${ship.lowHullTrips}`,
+      );
+    }
+  }
+
   /** Hull repairs at an HQ (decision 0.5.148): below 60%, when the cash is there. */
   function repairShips(): boolean {
     let acted = false;
@@ -611,9 +690,9 @@ export function simulate(options: SimulationOptions): SimulationResult {
         const ship = ships.find((s) => s.id === flight.shipId)!;
         // Flying wears every hull, events or not (decision 0.5.152).
         const hours = tripGameHours(flight.record.departureAt, flight.record.arrivalAt, config);
-        loseHull(ship, hullWear(hours, config));
         ship.inFlight = false;
         ship.locationId = r.shipLocationId;
+        loseHull(ship, hullWear(hours, config), ship.locationId);
       }
       if (flight.record.tutorial) {
         runsCompleted++;
@@ -1057,12 +1136,14 @@ export function simulate(options: SimulationOptions): SimulationResult {
         ship,
         pilot: pilotState(pilot),
         orders: defaultOrders(home, content),
-        board: board(ship.locationId),
+        // Asleep, a service trip flies empty (as the engine does).
+        board: now >= sleepAt ? [] : board(ship.locationId),
         now,
         credits,
         spendingFloor: floor,
         discoveredIds: discovered,
         emptyPeriods: pilot.emptyPeriods ?? 0,
+        booking: ship.booking ?? null,
       },
       content,
     );
@@ -1111,6 +1192,13 @@ export function simulate(options: SimulationOptions): SimulationResult {
     pilot.nextDecisionAt = null;
   }
 
+  /** Heading for booked service (CR-027 §2): flies on while the fleet is asleep. */
+  function onServiceTrip(pilot: SimPilot): boolean {
+    const ship = ships.find((x) => x.id === pilot.assignedShipId);
+    if (!ship?.booking || ship.inFlight || ship.locationId === ship.booking.hqId) return false;
+    return canReachHq(ship, ship.booking.hqId, discovered, content);
+  }
+
   function flyIndependent(): boolean {
     let acted = false;
     for (;;) {
@@ -1120,7 +1208,7 @@ export function simulate(options: SimulationOptions): SimulationResult {
             !p.isAvatar &&
             p.nextDecisionAt != null &&
             p.nextDecisionAt <= now &&
-            p.nextDecisionAt < sleepAt,
+            (p.nextDecisionAt < sleepAt || onServiceTrip(p)),
         )
         .sort((a, b) => a.nextDecisionAt! - b.nextDecisionAt! || (a.id < b.id ? -1 : 1))[0];
       if (!due) return acted;
@@ -1158,6 +1246,7 @@ export function simulate(options: SimulationOptions): SimulationResult {
       let acted = false;
       if (tutorialActive) acted = playTutorial() || acted;
       else if (away) {
+        acted = startServices() || acted;
         acted = flyIndependent() || acted;
       } else {
         if (!inWindow) {
@@ -1201,5 +1290,6 @@ export function simulate(options: SimulationOptions): SimulationResult {
     scenarioEarnings: scenario ? credits - windowCredits + (windowLoan - loanBalance) : null,
     payoutInFlightAtSleep,
     events: eventStats,
+    service: serviceStats,
   };
 }

packages/sim/test/balance.test.ts

@@ -143,6 +143,19 @@ describe("the away scenario (CR-021 Step 21.8)", () => {
   it("never lets a pilot buy fuel below the spending floor or get stranded", () => {
     for (const run of awayRuns) expect(run.violations).toEqual([]);
   });
+
+  it("keeps Independent hulls serviced with events on and auto-repair at 40% (CR-027 Step 27.7)", () => {
+    for (const run of awayRuns) {
+      // No ship flies more than one trip below 25% while its repair is affordable.
+      expect(run.service.maxLowHullTrips).toBeLessThanOrEqual(1);
+      expect(run.violations.filter((v) => v.rule === "hull-neglected")).toEqual([]);
+    }
+    // Auto-repair books repairs, and they get done.
+    const bookings = awayRuns.reduce((n, r) => n + r.service.bookings, 0);
+    const started = awayRuns.reduce((n, r) => n + r.service.started, 0);
+    expect(bookings).toBeGreaterThan(0);
+    expect(started).toBeGreaterThanOrEqual(bookings - awayRuns.length);
+  });
 });
 
 describe("a week away (CR-024 Step 24.7, plan 12.1)", () => {