diff --git a/DECISIONS.md b/DECISIONS.md
index a680ccf..76bbd56 100644
--- a/DECISIONS.md
+++ b/DECISIONS.md
@@ -1995,3 +1995,8 @@ Implementation decisions not spelled out in `memory-bank/implementation-plan.md`
 - **Numbering:** received as "CR-025 — Service Bookings and Auto-Repair" for "Phase 25"; stored as **CR-027**, built as **Phase 27** (its 25.n = 27.n), since CR-025 (Short Away Summary) and CR-026 (Random Events) exist. Its decisions CR-025.D1–D7 are **0.5.153–0.5.159**. Its references: CR-006 → CR-009, CR-011 → CR-014, CR-014 → CR-015, CR-019 → CR-021, CR-021 → CR-023, CR-022 → CR-024, CR-023 → CR-025, CR-024 → CR-026.
 - **All seven decisions are recorded**: §8 says "Add CR-025.D1–D6", but §6 lists D7 (no double waiting) too.
 - **No double waiting, with short repairs:** CR-023 counts the shop as rest only when it lasts a full rest; a repair can take 5 minutes, shorter than a 10-minute rest. Then the rest simply runs on to its end, which is still "the later of the two", so the CR's rule holds without changing CR-023's.
+
+## Step 27.1
+
+- **The booking lives on the ship** (one per ship, as the CR has one booking per ship), with its timings: `startedAt` once the work is in the shop (the booking clears at the shop end), `waitingSince` while it waits for funds at the HQ.
+- **One upgrade level per booking** (`upgradeId`: the next level of that upgrade when the work starts), as the CR allows one level per visit.
diff --git a/apps/web/test/about.test.tsx b/apps/web/test/about.test.tsx
index 94a5115..5006f4f 100644
--- a/apps/web/test/about.test.tsx
+++ b/apps/web/test/about.test.tsx
@@ -23,7 +23,7 @@ describe("about and debug info (Step 10K.10)", () => {
     expect(text).toContain("Build: test");
     // CR-014: the save, its format version and where it is stored; no player id.
     expect(text).toContain("Save: player-1");
-    expect(text).toContain("Save version: 11");
+    expect(text).toContain("Save version: 12");
     expect(text).toContain("Storage: unknown");
     expect(text).not.toContain("Player:");
     expect(text).toMatch(/Game time: \d{4}-\d{2}-\d{2}T/);
diff --git a/memory-bank/architecture.md b/memory-bank/architecture.md
index 934eb5a..631af11 100644
--- a/memory-bank/architecture.md
+++ b/memory-bank/architecture.md
@@ -86,7 +86,7 @@ The `routes` catalog is the list of engine commands (CR-014). Each entry has `re
 
 ## Save document (`packages/schema/src/save.ts`, CR-014)
 
-One document per company on the device, validated on every load and save: `saveVersion` (currently 11; 1 → 2 added fuel tanks, CR-015; 2 → 3 put every ship on Manual refueling, CR-018; 3 → 4 dropped stored boards, CR-019; 4 → 5 added pilot `mode` and `orders` and the company's `dispatchOffice` and `npcSpendingFloor`, CR-021; 5 → 6 added pilot `nextDecisionAt` and `emptyPeriods` and dispatch `independent`, CR-021; 6 → 7 added `player.welcomeSeen`, true for existing companies, CR-022; 7 → 8 added ship `shopPilotId`, null for existing ships, CR-023; 8 → 9 added company `lastManualDecisionAt` (null until the engine's first catch-up sets it) and `sleepAfterHours`, CR-024; 9 → 10 added the `logbook`, player `awaySince`, `lastAbsence` and `readyGoalsLogged`, and ship `shopOpen`, turning resolved dispatches into entries, CR-025; 10 → 11 added ship `hullConditionPct` (100), `quietTrips` and `shopRepair`, dispatch `event` and `eventApplied` (null), company `firstEventDone` and `tripsSinceDeal`, CR-026), `saveId`, `lastTimeSeen` (the clock never goes below it), `player` (world seed, tutorial state, deal accepted), `company` (name, credits, loan, the Dispatch Office and spending floor, and since CR-024 the last manual decision and the sleep threshold), `ships` (with `upgrades` as a level map, shop fields including `shopPilotId` (the pilot waiting out the shop as rest, CR-023), and `fuelFu`, `fuelAvgPrice`, `refuelPolicy` since CR-015), `pilots`, `bays`, `discoveredLocations`, `contractBoards` (stored boards), `dispatches` (sim record, status, resolution, acknowledged), `acceptedContracts`, `claimedGoals`, `logbook` (CR-025: entries of kind `flight` (deliveries and deadheads, with payout, pilot pay, fuel used, loan repayment and XP), `refuel` (top-up, bought, pilot or emergency), `rest`, `upgrade`, `discovery`, `level-up` and `goal-ready`, each with time, pilot and ship; ids made from what they record; kept `logbookRetentionRealDays` (7) and pruned on save). Written by `packages/engine/src/game/logbook.ts` helpers from arrivals, refuelling, rest, shop ends (a catch-up event for every `shopOpen` ship), and goals becoming ready (after every catch-up event and command). It mirrors the old server's database tables without player ids; the stored contract, dispatch record and resolution are type-checked against the sim types. `migrateSave(raw)` steps an older save through `SAVE_MIGRATIONS` (`applyMigrations`) and validates it, returning a readable error instead of throwing.
+One document per company on the device, validated on every load and save: `saveVersion` (currently 12; 1 → 2 added fuel tanks, CR-015; 2 → 3 put every ship on Manual refueling, CR-018; 3 → 4 dropped stored boards, CR-019; 4 → 5 added pilot `mode` and `orders` and the company's `dispatchOffice` and `npcSpendingFloor`, CR-021; 5 → 6 added pilot `nextDecisionAt` and `emptyPeriods` and dispatch `independent`, CR-021; 6 → 7 added `player.welcomeSeen`, true for existing companies, CR-022; 7 → 8 added ship `shopPilotId`, null for existing ships, CR-023; 8 → 9 added company `lastManualDecisionAt` (null until the engine's first catch-up sets it) and `sleepAfterHours`, CR-024; 9 → 10 added the `logbook`, player `awaySince`, `lastAbsence` and `readyGoalsLogged`, and ship `shopOpen`, turning resolved dispatches into entries, CR-025; 10 → 11 added ship `hullConditionPct` (100), `quietTrips` and `shopRepair`, dispatch `event` and `eventApplied` (null), company `firstEventDone` and `tripsSinceDeal`, CR-026; 11 → 12 added ship `booking` (null) and `autoRepair` (on, 40%), CR-027), `saveId`, `lastTimeSeen` (the clock never goes below it), `player` (world seed, tutorial state, deal accepted), `company` (name, credits, loan, the Dispatch Office and spending floor, and since CR-024 the last manual decision and the sleep threshold), `ships` (with `upgrades` as a level map, shop fields including `shopPilotId` (the pilot waiting out the shop as rest, CR-023), and `fuelFu`, `fuelAvgPrice`, `refuelPolicy` since CR-015), `pilots`, `bays`, `discoveredLocations`, `contractBoards` (stored boards), `dispatches` (sim record, status, resolution, acknowledged), `acceptedContracts`, `claimedGoals`, `logbook` (CR-025: entries of kind `flight` (deliveries and deadheads, with payout, pilot pay, fuel used, loan repayment and XP), `refuel` (top-up, bought, pilot or emergency), `rest`, `upgrade`, `discovery`, `level-up` and `goal-ready`, each with time, pilot and ship; ids made from what they record; kept `logbookRetentionRealDays` (7) and pruned on save). Written by `packages/engine/src/game/logbook.ts` helpers from arrivals, refuelling, rest, shop ends (a catch-up event for every `shopOpen` ship), and goals becoming ready (after every catch-up event and command). It mirrors the old server's database tables without player ids; the stored contract, dispatch record and resolution are type-checked against the sim types. `migrateSave(raw)` steps an older save through `SAVE_MIGRATIONS` (`applyMigrations`) and validates it, returning a readable error instead of throwing.
 
 Commands (`packages/engine/src/game/`): `GameEngine.call(name, input)` runs the route catalog's endpoints on the save, with the same schemas and error codes (`CommandError`); `getPlayerState` with no save answers `unauthorized`. Every command resolves due arrivals first and prunes on save; saves are skipped when nothing changed. `stats` keeps lifetime delivery counts for goals, so seen trips older than `savedDispatchRetentionRealHours` can be pruned.
 
diff --git a/memory-bank/progress.md b/memory-bank/progress.md
index f69e0d4..09c86f4 100644
--- a/memory-bank/progress.md
+++ b/memory-bank/progress.md
@@ -569,7 +569,7 @@ Spec: `memory-bank/change-requests/CR-026-random-events-hull.md` (received as "C
 
 Spec: `memory-bank/change-requests/CR-027-service-bookings.md` (received as "CR-025 … Phase 25"). New decisions recorded as plan §0.5.153–0.5.159.
 
-- [ ] Step 27.1 — Content and save
+- [x] **Step 27.1 — Content and save.** Config `autoRepair` (default 40%, 10–90% in steps of 5; the default must be a step). Save version 12: each ship has `booking` (repair, upgrade, HQ, by player or auto, created, started, waiting for funds since; null when none) and `autoRepair` (on, threshold); new ships start on at 40% with no booking; the 11 → 12 migration does the same for existing ships. Tests: `packages/content/test/config.test.ts`; `packages/schema/test/save.test.ts` (11 → 12); `packages/engine/test/trip-events.test.ts` (a bought ship).
 - [ ] Step 27.2 — Sim: routing and triggers
 - [ ] Step 27.3 — Engine: booking commands and service start
 - [ ] Step 27.4 — Engine: Independent pilots and catch-up
diff --git a/packages/content/src/data/config.ts b/packages/content/src/data/config.ts
index 135186b..9d97227 100644
--- a/packages/content/src/data/config.ts
+++ b/packages/content/src/data/config.ts
@@ -116,6 +116,7 @@ export const gameConfig: GameConfig = {
     responseWindowRealMinutes: 30,
     minTripFraction: 0.5,
   },
+  autoRepair: { defaultThresholdPct: 40, minPct: 10, maxPct: 90, stepPct: 5 },
   hull: {
     floorPct: 5,
     ratingReductionPerPoint: 0.1,
diff --git a/packages/content/src/schemas.ts b/packages/content/src/schemas.ts
index b115038..e768fb1 100644
--- a/packages/content/src/schemas.ts
+++ b/packages/content/src/schemas.ts
@@ -486,6 +486,13 @@ export const gameConfigSchema = z
       /** A speed-up never makes a trip shorter than this share of it. */
       minTripFraction: z.number().min(0).max(1),
     }),
+    /** Auto-repair (decision 0.5.157): the default threshold and the choices, in percent. */
+    autoRepair: z.object({
+      defaultThresholdPct: z.number().min(0).max(100),
+      minPct: z.number().min(0).max(100),
+      maxPct: z.number().min(0).max(100),
+      stepPct: z.number().positive(),
+    }),
     /** Hull condition and repairs (decision 0.5.148). */
     hull: z.object({
       floorPct: z.number().min(0).max(100),
@@ -526,6 +533,17 @@ export const gameConfigSchema = z
       path: ["fleetSleep", "optionsHours"],
     },
   )
+  .refine(
+    ({ autoRepair: a }) =>
+      a.minPct <= a.defaultThresholdPct &&
+      a.defaultThresholdPct <= a.maxPct &&
+      (a.defaultThresholdPct - a.minPct) % a.stepPct === 0 &&
+      (a.maxPct - a.minPct) % a.stepPct === 0,
+    {
+      message: "The auto-repair default must be one of the steps from min to max",
+      path: ["autoRepair", "defaultThresholdPct"],
+    },
+  )
   .refine(({ events }) => events.fireFrom < events.fireTo, {
     message: "Events fire inside the trip, early before late",
     path: ["events", "fireFrom"],
diff --git a/packages/content/test/config.test.ts b/packages/content/test/config.test.ts
index e0d9d96..c43a38a 100644
--- a/packages/content/test/config.test.ts
+++ b/packages/content/test/config.test.ts
@@ -147,3 +147,23 @@ describe("fleet sleep config (Step 24.1, decision 0.5.137)", () => {
     expect(withSleep({ defaultHours: 12, optionsHours: [12] })).toBe(true);
   });
 });
+
+describe("auto-repair config (Step 27.1, decision 0.5.157)", () => {
+  const withAuto = (autoRepair: typeof gameConfig.autoRepair) =>
+    gameConfigSchema.safeParse({ ...gameConfig, autoRepair }).success;
+
+  it("defaults to 40%, from 10% to 90% in steps of 5", () => {
+    expect(gameConfig.autoRepair).toEqual({
+      defaultThresholdPct: 40,
+      minPct: 10,
+      maxPct: 90,
+      stepPct: 5,
+    });
+  });
+
+  it("rejects a default off the steps or outside the range", () => {
+    expect(withAuto({ defaultThresholdPct: 42, minPct: 10, maxPct: 90, stepPct: 5 })).toBe(false);
+    expect(withAuto({ defaultThresholdPct: 95, minPct: 10, maxPct: 90, stepPct: 5 })).toBe(false);
+    expect(withAuto({ defaultThresholdPct: 40, minPct: 10, maxPct: 90, stepPct: 5 })).toBe(true);
+  });
+});
diff --git a/packages/content/test/schemas.test.ts b/packages/content/test/schemas.test.ts
index f4fd2dc..348d739 100644
--- a/packages/content/test/schemas.test.ts
+++ b/packages/content/test/schemas.test.ts
@@ -131,6 +131,7 @@ const validGameConfig = {
     responseWindowRealMinutes: 30,
     minTripFraction: 0.5,
   },
+  autoRepair: { defaultThresholdPct: 40, minPct: 10, maxPct: 90, stepPct: 5 },
   hull: {
     floorPct: 5,
     ratingReductionPerPoint: 0.1,
diff --git a/packages/engine/src/game/company.ts b/packages/engine/src/game/company.ts
index 44de26b..6343a12 100644
--- a/packages/engine/src/game/company.ts
+++ b/packages/engine/src/game/company.ts
@@ -140,6 +140,8 @@ export function acceptDeal(save: SaveDocument, random: RandomSource, now: RealTi
       shopRepair: false,
       hullConditionPct: 100,
       quietTrips: content.config.events.shipCooldownTrips,
+      booking: null,
+      autoRepair: { on: true, thresholdPct: content.config.autoRepair.defaultThresholdPct },
       fromDeal: true,
       createdAt: now,
       lastArrivalAt: now,
diff --git a/packages/engine/src/game/fleet.ts b/packages/engine/src/game/fleet.ts
index f86f009..aa84d4e 100644
--- a/packages/engine/src/game/fleet.ts
+++ b/packages/engine/src/game/fleet.ts
@@ -82,6 +82,8 @@ export function buyShip(
     shopRepair: false,
     hullConditionPct: 100,
     quietTrips: content.config.events.shipCooldownTrips,
+    booking: null,
+    autoRepair: { on: true, thresholdPct: content.config.autoRepair.defaultThresholdPct },
     fromDeal: false,
     createdAt: now,
     lastArrivalAt: now,
diff --git a/packages/engine/test/support.ts b/packages/engine/test/support.ts
index 5f85c5d..4062c03 100644
--- a/packages/engine/test/support.ts
+++ b/packages/engine/test/support.ts
@@ -316,6 +316,8 @@ export function makeOwner(
       shopRepair: false,
       hullConditionPct: 100,
       quietTrips: 2,
+      booking: null,
+      autoRepair: { on: true, thresholdPct: 40 },
       // Stands in for the deal's Courier (not a Market purchase, CR-013), with a full tank.
       fromDeal: true,
       createdAt: TEST_NOW,
@@ -384,6 +386,8 @@ export function addShip(
       shopRepair: false,
       hullConditionPct: 100,
       quietTrips: 2,
+      booking: null,
+      autoRepair: { on: true, thresholdPct: 40 },
       fromDeal: false,
       createdAt: TEST_NOW,
       lastArrivalAt: TEST_NOW,
diff --git a/packages/engine/test/trip-events.test.ts b/packages/engine/test/trip-events.test.ts
index bea7ea9..c182834 100644
--- a/packages/engine/test/trip-events.test.ts
+++ b/packages/engine/test/trip-events.test.ts
@@ -325,3 +325,18 @@ describe("hull wear (Step 26.9, decision 0.5.152)", () => {
     expect(ship.hullConditionPct).toBeLessThan(100);
   });
 });
+
+describe("service settings on new ships (Step 27.1, decision 0.5.157)", () => {
+  it("gives a bought ship auto-repair on at 40% and no booking", async () => {
+    const test = newTestApp();
+    const owner = await signUpOwner(test.app);
+    await setCredits(test.app, 100_000);
+    const { ship } = await test.app.call("buyShip", {
+      modelId: "courier",
+      bayId: owner.earthBayId,
+    });
+    const saved = (await readSave(test.app)).ships.find((s) => s.id === ship.id)!;
+    expect(saved.autoRepair).toEqual({ on: true, thresholdPct: 40 });
+    expect(saved.booking).toBeNull();
+  });
+});
diff --git a/packages/schema/src/save.ts b/packages/schema/src/save.ts
index 2e14730..142ac39 100644
--- a/packages/schema/src/save.ts
+++ b/packages/schema/src/save.ts
@@ -105,6 +105,26 @@ export const savedShipSchema = z.object({
   hullConditionPct: z.number().min(0).max(100),
   /** Trips since its last event: none until the cooldown has passed (decision 0.5.145). */
   quietTrips: z.number().int().nonnegative(),
+  /**
+   * Service booked at an HQ (decision 0.5.153): a repair and/or one upgrade
+   * level, booked by the player or by auto-repair; null when none.
+   */
+  booking: z
+    .object({
+      repair: z.boolean(),
+      upgradeId: idSchema.nullable(),
+      /** The HQ (a location with one of the player's bays). */
+      hqId: idSchema,
+      by: z.enum(["player", "auto"]),
+      createdAt: timeSchema,
+      /** The work started in the shop; the booking clears when it ends. */
+      startedAt: timeSchema.nullable(),
+      /** At the HQ but unable to pay, since then (decision 0.5.156). */
+      waitingSince: timeSchema.nullable(),
+    })
+    .nullable(),
+  /** Auto-repair (decision 0.5.157): on or off, and the hull percent that triggers it. */
+  autoRepair: z.object({ on: z.boolean(), thresholdPct: z.number().min(0).max(100) }),
   /** Handed over in the deal rather than bought (CR-013). */
   fromDeal: z.boolean(),
   createdAt: timeSchema,
@@ -187,7 +207,7 @@ export const savedDispatchSchema = z.object({
 });
 
 /** The save version this build writes. Bump it with a new migration. */
-export const CURRENT_SAVE_VERSION = 11;
+export const CURRENT_SAVE_VERSION = 12;
 
 export const saveDocumentSchema = z.object({
   saveVersion: z.literal(CURRENT_SAVE_VERSION),
@@ -520,6 +540,19 @@ function tripEvents(save: Doc): Doc {
   };
 }
 
+/** Version 11 → 12 (CR-027 §5): every ship on auto-repair at the default threshold, no booking. */
+function serviceBookings(save: Doc): Doc {
+  const thresholdPct = content.config.autoRepair.defaultThresholdPct;
+  return {
+    ...save,
+    ships: records(save.ships).map((ship) => ({
+      ...ship,
+      booking: null,
+      autoRepair: { on: true, thresholdPct },
+    })),
+  };
+}
+
 export const SAVE_MIGRATIONS: readonly SaveMigration[] = [
   { from: 1, migrate: addFuelTanks },
   { from: 2, migrate: manualRefueling },
@@ -531,6 +564,7 @@ export const SAVE_MIGRATIONS: readonly SaveMigration[] = [
   { from: 8, migrate: fleetSleep },
   { from: 9, migrate: logbook },
   { from: 10, migrate: tripEvents },
+  { from: 11, migrate: serviceBookings },
 ];
 
 export type SaveParse = { ok: true; save: SaveDocument } | { ok: false; error: string };
diff --git a/packages/schema/test/save-fixture.ts b/packages/schema/test/save-fixture.ts
index 8590d9e..920976d 100644
--- a/packages/schema/test/save-fixture.ts
+++ b/packages/schema/test/save-fixture.ts
@@ -45,7 +45,7 @@ export function fullSave(): SaveDocument {
     seed: 42,
   });
   return {
-    saveVersion: 11,
+    saveVersion: 12,
     saveId: "save-1",
     lastTimeSeen: T + 3_600_000,
     player: {
@@ -91,6 +91,8 @@ export function fullSave(): SaveDocument {
         shopRepair: false,
         hullConditionPct: 100,
         quietTrips: 2,
+        booking: null,
+        autoRepair: { on: true, thresholdPct: 40 },
         fromDeal: true,
         createdAt: T,
         lastArrivalAt: T + 200_000,
@@ -114,6 +116,8 @@ export function fullSave(): SaveDocument {
         shopRepair: false,
         hullConditionPct: 100,
         quietTrips: 2,
+        booking: null,
+        autoRepair: { on: true, thresholdPct: 40 },
         fromDeal: true,
         createdAt: T,
         lastArrivalAt: T,
diff --git a/packages/schema/test/save.test.ts b/packages/schema/test/save.test.ts
index 2d5589c..c14b5ae 100644
--- a/packages/schema/test/save.test.ts
+++ b/packages/schema/test/save.test.ts
@@ -11,7 +11,7 @@ import { fullSave } from "./save-fixture";
 describe("save document (Step 14.2)", () => {
   it("validates a fully populated save", () => {
     expect(saveDocumentSchema.safeParse(fullSave()).success).toBe(true);
-    expect(CURRENT_SAVE_VERSION).toBe(11);
+    expect(CURRENT_SAVE_VERSION).toBe(12);
   });
 
   it("rejects an invalid save with a readable error naming the field", () => {
@@ -84,7 +84,7 @@ describe("save migration 1 → 2: fuel tanks (CR-015 §5)", () => {
     if (!result.ok) throw new Error(result.error);
     const { save } = result;
     const before = fullSave();
-    expect(save.saveVersion).toBe(11);
+    expect(save.saveVersion).toBe(12);
     // The Courier has Extended Fuel Tanks 1 (40 fu × 4.8) and is in flight: the base
     // price, 5 cr/fu since CR-018 (decision 0.5.110).
     expect(save.ships[0]).toMatchObject({ fuelFu: 192, fuelAvgPrice: 5, refuelPolicy: "manual" });
@@ -116,7 +116,7 @@ describe("save migration 2 → 3: Manual refueling (CR-018 §3)", () => {
     const result = migrateSave(old);
     if (!result.ok) throw new Error(result.error);
     const { save } = result;
-    expect(save.saveVersion).toBe(11);
+    expect(save.saveVersion).toBe(12);
     expect(save.ships.map((s) => s.refuelPolicy)).toEqual(save.ships.map(() => "manual"));
     expect(save.ships.map((s) => [s.fuelFu, s.fuelAvgPrice])).toEqual(
       before.ships.map((s) => [s.fuelFu, s.fuelAvgPrice]),
@@ -142,7 +142,7 @@ describe("save migration 3 → 4: completable boards (CR-019 §3)", () => {
     for (const board of old.contractBoards) delete board.fleet;
     const result = migrateSave(old);
     if (!result.ok) throw new Error(result.error);
-    expect(result.save.saveVersion).toBe(11);
+    expect(result.save.saveVersion).toBe(12);
     expect(result.save.contractBoards).toEqual([]);
     expect({ ...result.save, contractBoards: [] }).toEqual({ ...before, contractBoards: [] });
   });
@@ -164,7 +164,7 @@ describe("save migration 4 → 5: independent pilots (CR-021 §3)", () => {
     }
     const result = migrateSave(old);
     if (!result.ok) throw new Error(result.error);
-    expect(result.save.saveVersion).toBe(11);
+    expect(result.save.saveVersion).toBe(12);
     expect(result.save.company).toMatchObject({ dispatchOffice: false, npcSpendingFloor: 500 });
     for (const pilot of result.save.pilots) {
       expect(pilot.mode).toBe("manual");
@@ -191,7 +191,7 @@ describe("save migration 6 → 7: welcome cards (CR-022 §3)", () => {
     delete old.player.welcomeSeen;
     const result = migrateSave(old);
     if (!result.ok) throw new Error(result.error);
-    expect(result.save.saveVersion).toBe(11);
+    expect(result.save.saveVersion).toBe(12);
     expect(result.save.player.welcomeSeen).toBe(true);
     expect(result.save).toEqual(before);
   });
@@ -207,7 +207,7 @@ describe("save migration 7 → 8: shop time counts as rest (CR-023)", () => {
     for (const ship of old.ships) delete ship.shopPilotId;
     const result = migrateSave(old);
     if (!result.ok) throw new Error(result.error);
-    expect(result.save.saveVersion).toBe(11);
+    expect(result.save.saveVersion).toBe(12);
     // Including the ship still in the shop: its upgrade finishes without the rest.
     expect(result.save.ships.map((s) => s.shopPilotId)).toEqual(before.ships.map(() => null));
     expect(result.save).toEqual(before);
@@ -225,7 +225,7 @@ describe("save migration 8 → 9: fleet sleep (CR-024 §3)", () => {
     delete old.company.sleepAfterHours;
     const result = migrateSave(old);
     if (!result.ok) throw new Error(result.error);
-    expect(result.save.saveVersion).toBe(11);
+    expect(result.save.saveVersion).toBe(12);
     expect(result.save.company.lastManualDecisionAt).toBeNull();
     expect(result.save.company.sleepAfterHours).toBe(24);
     expect(result.save).toEqual(before);
@@ -245,7 +245,7 @@ describe("save migration 9 → 10: the logbook (CR-025 §4)", () => {
     for (const ship of old.ships) delete ship.shopOpen;
     const result = migrateSave(old);
     if (!result.ok) throw new Error(result.error);
-    expect(result.save.saveVersion).toBe(11);
+    expect(result.save.saveVersion).toBe(12);
     // The resolved d0: its flight (payout = credits + pilot pay + loan) and its top-up.
     expect(result.save.logbook.map((e) => e.id)).toEqual(["d0:flight", "d0:top-up"]);
     expect(result.save.ships.map((s) => s.shopOpen)).toEqual([false, true]);
@@ -285,7 +285,7 @@ describe("save migration 10 → 11: events and hulls (CR-026 §6)", () => {
     }
     const result = migrateSave(old);
     if (!result.ok) throw new Error(result.error);
-    expect(result.save.saveVersion).toBe(11);
+    expect(result.save.saveVersion).toBe(12);
     expect(result.save.ships.map((s) => s.hullConditionPct)).toEqual([100, 100]);
     expect(result.save.dispatches.map((d) => d.event)).toEqual([null, null]);
     // The deal is made, so the grace trips are behind it.
@@ -293,3 +293,25 @@ describe("save migration 10 → 11: events and hulls (CR-026 §6)", () => {
     expect(result.save).toEqual(before);
   });
 });
+
+describe("save migration 11 → 12: service bookings (CR-027 §5)", () => {
+  it("puts every ship on auto-repair at 40% with no booking, and changes nothing else", () => {
+    const before = fullSave();
+    const old = JSON.parse(JSON.stringify(before)) as Record<string, unknown> & {
+      ships: Record<string, unknown>[];
+    };
+    old.saveVersion = 11;
+    for (const ship of old.ships) {
+      delete ship.booking;
+      delete ship.autoRepair;
+    }
+    const result = migrateSave(old);
+    if (!result.ok) throw new Error(result.error);
+    expect(result.save.saveVersion).toBe(12);
+    expect(result.save.ships.map((s) => [s.booking, s.autoRepair])).toEqual([
+      [null, { on: true, thresholdPct: 40 }],
+      [null, { on: true, thresholdPct: 40 }],
+    ]);
+    expect(result.save).toEqual(before);
+  });
+});