Step 10K.8: backup codes and restore on the server

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

DECISIONS.md

@@ -1088,3 +1088,12 @@ Implementation decisions not spelled out in `memory-bank/implementation-plan.md`
 - **Client and server share one name rule** (`companyNameSchema` from `@deadhead/schema`), so the inline message is the same check the server will apply.
 - **The confirmation is case-sensitive**: the typed text must equal the company name exactly.
 - **A new company clears dismissed tips** so the tutorial intro card greets the restart, as the CR's "Contracts with the intro card" asks.
+
+## Step 10K.8
+
+- **Restoring creates a new guest sign-in for the device** and links it to the player in `player_logins`; session lookup checks the player's own user, then those links. Better Auth's public API can't start a session for an existing user, and this way several devices share a player safely (decision 0.5.73). The device's previous guest company is left behind, as the CR warns.
+- **Code format:** 20 characters from a 31-character alphabet without 0/O/1/I/L (`23456789ABCDEFGHJKMNPQRSTUVWXYZ`), shown `XXXXX-XXXXX-XXXXX-XXXXX`: about 99 bits, above the 80 the CR asks. Input ignores case, spaces and dashes.
+- **Hashing:** SHA-256 of the normalized code, with a unique index; the code is random enough that a slow password hash adds nothing, and lookup stays one indexed query.
+- **Endpoints:** `GET` says whether a code exists; `POST` makes a new one, shown once, and the old one stops working. The server never returns an existing code.
+- **Errors:** a wrong code is a generic `409 restore-failed` (no hint whether it was close); too many failures are `429 rate-limited`. 409 rather than 401, because the client treats 401 as "signed out".
+- **Rate limit:** 5 failed attempts per 15 minutes, counted per IP and per device id (the client sends `x-device-id`), in memory per server process, which is enough for the single-instance base game (Phase 13 can move it to Postgres).

apps/server/drizzle/0008_cr011_backup_codes.sql

@@ -0,0 +1,11 @@
+CREATE TABLE "player_logins" (
+	"user_id" text PRIMARY KEY NOT NULL,
+	"player_id" text NOT NULL,
+	"created_at" bigint NOT NULL
+);
+--> statement-breakpoint
+ALTER TABLE "players" ADD COLUMN "backup_code_hash" text;--> statement-breakpoint
+ALTER TABLE "players" ADD COLUMN "backup_code_created_at" bigint;--> statement-breakpoint
+ALTER TABLE "player_logins" ADD CONSTRAINT "player_logins_user_id_user_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."user"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "player_logins" ADD CONSTRAINT "player_logins_player_id_players_id_fk" FOREIGN KEY ("player_id") REFERENCES "public"."players"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "players" ADD CONSTRAINT "players_backup_code_hash_unique" UNIQUE("backup_code_hash");

apps/server/drizzle/meta/_journal.json

@@ -57,6 +57,13 @@
       "when": 1791164145228,
       "tag": "0007_cr010_veteran_pilot",
       "breakpoints": true
+    },
+    {
+      "idx": 8,
+      "version": "7",
+      "when": 1791171500580,
+      "tag": "0008_cr011_backup_codes",
+      "breakpoints": true
     }
   ]
 }

apps/server/src/db/schema.ts

@@ -38,6 +38,9 @@ export const players = pgTable("players", {
   /** The one-time deal has been accepted (decision 0.5.30). */
   dealAccepted: boolean("deal_accepted").notNull().default(false),
   createdAt: time("created_at").notNull(),
+  /** SHA-256 of the player's backup code (decision 0.5.72); null until one is made. */
+  backupCodeHash: text("backup_code_hash").unique(),
+  backupCodeCreatedAt: time("backup_code_created_at"),
 });
 
 export const companies = pgTable("companies", {
@@ -233,3 +236,17 @@ export const claimedGoals = pgTable(
   },
   (t) => [primaryKey({ columns: [t.playerId, t.goalId] })],
 );
+
+/**
+ * Extra sign-ins for a player (decisions 0.5.72, 0.5.73): each device that
+ * restores with a backup code gets its own guest user, linked here.
+ */
+export const playerLogins = pgTable("player_logins", {
+  userId: text("user_id")
+    .primaryKey()
+    .references(() => user.id, { onDelete: "cascade" }),
+  playerId: text("player_id")
+    .notNull()
+    .references(() => players.id, { onDelete: "cascade" }),
+  createdAt: time("created_at").notNull(),
+});

apps/server/src/game/backup.ts

@@ -0,0 +1,96 @@
+import { createHash, randomInt } from "node:crypto";
+import type { RealTime } from "@deadhead/sim";
+import { eq } from "drizzle-orm";
+import type { Queryable } from "../db/client";
+import { players } from "../db/schema";
+
+/**
+ * Backup codes (decision 0.5.72): 20 characters from 31 that can't be mistaken
+ * for each other (no 0/O, 1/I/L), shown as four groups of five: about 99 bits.
+ * Only a SHA-256 of the normalized code is stored; the code itself is random
+ * enough that a slow hash would add nothing.
+ */
+export const BACKUP_ALPHABET = "23456789ABCDEFGHJKMNPQRSTUVWXYZ";
+const GROUPS = 4;
+const GROUP_LENGTH = 5;
+
+export function generateBackupCode(): string {
+  const groups = Array.from({ length: GROUPS }, () =>
+    Array.from(
+      { length: GROUP_LENGTH },
+      () => BACKUP_ALPHABET[randomInt(BACKUP_ALPHABET.length)],
+    ).join(""),
+  );
+  return groups.join("-");
+}
+
+/** The code without spaces or dashes, in capitals: how players type it doesn't matter. */
+export function normalizeBackupCode(code: string): string {
+  return code.toUpperCase().replace(/[\s-]/g, "");
+}
+
+export function hashBackupCode(code: string): string {
+  return createHash("sha256").update(normalizeBackupCode(code)).digest("hex");
+}
+
+/** Makes a new code for the player, replacing any old one; returns it once. */
+export async function createBackupCode(
+  tx: Queryable,
+  playerId: string,
+  now: RealTime,
+): Promise<{ code: string; createdAt: RealTime }> {
+  const code = generateBackupCode();
+  await tx
+    .update(players)
+    .set({ backupCodeHash: hashBackupCode(code), backupCodeCreatedAt: now })
+    .where(eq(players.id, playerId));
+  return { code, createdAt: now };
+}
+
+export async function backupCodeStatus(tx: Queryable, playerId: string) {
+  const [row] = await tx
+    .select({ hash: players.backupCodeHash, createdAt: players.backupCodeCreatedAt })
+    .from(players)
+    .where(eq(players.id, playerId));
+  return { hasCode: Boolean(row?.hash), createdAt: row?.hash ? (row.createdAt ?? null) : null };
+}
+
+/** The player a backup code belongs to, or null. */
+export async function playerForBackupCode(tx: Queryable, code: string): Promise<string | null> {
+  if (normalizeBackupCode(code).length === 0) return null;
+  const [row] = await tx
+    .select({ id: players.id })
+    .from(players)
+    .where(eq(players.backupCodeHash, hashBackupCode(code)));
+  return row?.id ?? null;
+}
+
+/**
+ * Failed restore attempts per key (an IP, a device), in memory: at most
+ * `limit` failures per `windowMs` for any key (decision 0.5.72).
+ */
+export class RestoreLimiter {
+  private readonly failures = new Map<string, { count: number; resetAt: RealTime }>();
+
+  constructor(
+    readonly limit = 5,
+    readonly windowMs = 15 * 60_000,
+  ) {}
+
+  /** Whether any of the keys has used up its attempts. */
+  blocked(keys: readonly string[], now: RealTime): boolean {
+    return keys.some((key) => {
+      const entry = this.failures.get(key);
+      return entry !== undefined && entry.resetAt > now && entry.count >= this.limit;
+    });
+  }
+
+  fail(keys: readonly string[], now: RealTime): void {
+    for (const key of keys) {
+      const entry = this.failures.get(key);
+      if (!entry || entry.resetAt <= now)
+        this.failures.set(key, { count: 1, resetAt: now + this.windowMs });
+      else entry.count++;
+    }
+  }
+}

apps/server/src/http/session.ts

@@ -3,7 +3,7 @@ import { fromNodeHeaders } from "better-auth/node";
 import type { FastifyRequest } from "fastify";
 import type { Auth } from "../auth";
 import type { Db } from "../db/client";
-import { players } from "../db/schema";
+import { playerLogins, players } from "../db/schema";
 import { ApiError } from "./errors";
 
 /** The signed-in player's id, or a 401 `unauthorized` error. */
@@ -19,6 +19,12 @@ export async function requirePlayerId(
     .select({ id: players.id })
     .from(players)
     .where(eq(players.userId, session.user.id));
-  if (!player) throw new ApiError(401, "unauthorized", "No player for this account.");
-  return player.id;
+  if (player) return player.id;
+  // A device signed in with a backup code (decision 0.5.72).
+  const [login] = await db
+    .select({ playerId: playerLogins.playerId })
+    .from(playerLogins)
+    .where(eq(playerLogins.userId, session.user.id));
+  if (!login) throw new ApiError(401, "unauthorized", "No player for this account.");
+  return login.playerId;
 }

apps/server/src/routes/player.ts

@@ -6,12 +6,19 @@ import { fromNodeHeaders } from "better-auth/node";
 import type { FastifyInstance } from "fastify";
 import { acceptDeal } from "../game/deal";
 import { claimGoal } from "../game/goals";
+import {
+  backupCodeStatus,
+  createBackupCode,
+  playerForBackupCode,
+  RestoreLimiter,
+} from "../game/backup";
 import { renameCompany } from "../game/company";
 import { repayLoan } from "../game/loan";
 import { newCompany } from "../game/new-company";
 import { createPlayer } from "../game/new-player";
 import { loadPlayerState } from "../game/player-state";
 import { acknowledgeFinishedUpgrades, acknowledgeSummaries } from "../game/summaries";
+import { playerLogins } from "../db/schema";
 import { ApiError } from "../http/errors";
 import { registerRoute } from "../http/route";
 import type { AppContext } from "./context";
@@ -64,6 +71,50 @@ export function registerPlayerRoutes(app: FastifyInstance, ctx: AppContext): voi
     }),
   );
 
+  registerRoute(app, routes.getBackupCode, options, async (_input, { playerId }) =>
+    withPlayer(ctx, playerId, (tx) => backupCodeStatus(tx, playerId)),
+  );
+
+  registerRoute(app, routes.createBackupCode, options, async (_input, { playerId }) =>
+    withPlayer(ctx, playerId, (tx, now) => createBackupCode(tx, playerId, now)),
+  );
+
+  // Restoring signs this device in as the code's player (decisions 0.5.72, 0.5.73).
+  const limiter = new RestoreLimiter();
+  registerRoute(app, routes.restoreCompany, options, async (input, { request, reply }) => {
+    const now = clock();
+    const device = request.headers["x-device-id"];
+    const keys = [`ip:${request.ip}`, ...(typeof device === "string" ? [`device:${device}`] : [])];
+    if (limiter.blocked(keys, now)) {
+      throw new ApiError(
+        429,
+        "rate-limited",
+        "Too many attempts. Wait a few minutes and try again.",
+      );
+    }
+    const playerId = await playerForBackupCode(db, input.code);
+    if (!playerId) {
+      limiter.fail(keys, now);
+      throw new ApiError(
+        409,
+        "restore-failed",
+        "That code didn't open a company. Check it and try again.",
+      );
+    }
+    // A fresh guest sign-in for this device (any old session is left behind),
+    // linked to the code's player.
+    const headers = fromNodeHeaders(request.headers);
+    headers.delete("cookie");
+    const signIn = await auth.api.signInAnonymous({ headers, returnHeaders: true });
+    if (!signIn.response)
+      throw new ApiError(500, "internal-error", "Could not sign this device in.");
+    await db
+      .insert(playerLogins)
+      .values({ userId: signIn.response.user.id, playerId, createdAt: now });
+    reply.header("set-cookie", signIn.headers.getSetCookie());
+    return { playerId, state: await loadPlayerState(db, playerId, now) };
+  });
+
   registerRoute(app, routes.newCompany, options, async (_input, { playerId }) =>
     withPlayer(ctx, playerId, async (tx, now) => {
       await newCompany(tx, playerId, now);

apps/server/test/backup.test.ts

@@ -0,0 +1,106 @@
+import {
+  backupCodeResponseSchema,
+  createGuestResponseSchema,
+  errorResponseSchema,
+} from "@deadhead/schema";
+import { sql } from "drizzle-orm";
+import { describe, expect, it } from "vitest";
+import { BACKUP_ALPHABET, normalizeBackupCode } from "../src/game/backup";
+import { setCredits, useTestDatabase } from "./db";
+import { call, cookieFrom, getState, signUp, signUpOwner, useTestApp, type Guest } from "./game";
+
+const database = useTestDatabase();
+const testApp = useTestApp(database);
+
+const makeCode = async (guest: Guest) =>
+  backupCodeResponseSchema.parse(
+    (await call(testApp().app, guest, "POST", "/api/backup-code", {})).json(),
+  ).code;
+
+/** Restores on a new device (no cookie); `device` sets the device-id header. */
+const restore = (code: string, device = "device-a", ip = "10.0.0.1") =>
+  testApp().app.inject({
+    method: "POST",
+    url: "/api/restore",
+    headers: { "x-device-id": device },
+    remoteAddress: ip,
+    payload: { code },
+  });
+
+describe("backup codes (Step 10K.8)", () => {
+  it("makes a 20-character code in four groups, without look-alike characters", async () => {
+    const guest = await signUp(testApp().app);
+    const code = await makeCode(guest);
+    expect(code).toMatch(/^[A-Z2-9]{5}-[A-Z2-9]{5}-[A-Z2-9]{5}-[A-Z2-9]{5}$/);
+    for (const ch of normalizeBackupCode(code)) expect(BACKUP_ALPHABET).toContain(ch);
+    expect(code).not.toMatch(/[01OIL]/);
+    expect((await call(testApp().app, guest, "GET", "/api/backup-code")).json()).toMatchObject({
+      hasCode: true,
+    });
+  });
+
+  it("restores the same player on a second device, and both see the same state", async () => {
+    const { app } = testApp();
+    const owner = await signUpOwner(app, database().db);
+    await setCredits(database().db, owner.playerId, 4321);
+    const code = await makeCode(owner);
+
+    const response = await restore(code.toLowerCase().replaceAll("-", " "));
+    expect(response.statusCode).toBe(200);
+    const body = createGuestResponseSchema.parse(response.json());
+    expect(body.playerId).toBe(owner.playerId);
+    const second: Guest = { ...owner, cookie: cookieFrom(response.headers["set-cookie"]) };
+    expect(second.cookie).not.toBe(owner.cookie);
+
+    await call(app, second, "POST", "/api/company/name", { name: "Second Device Co" });
+    expect((await getState(app, owner)).company).toMatchObject({
+      name: "Second Device Co",
+      credits: 4321,
+    });
+  });
+
+  it("stops the old code working when a new one is made", async () => {
+    const guest = await signUp(testApp().app);
+    const first = await makeCode(guest);
+    const second = await makeCode(guest);
+    expect(second).not.toBe(first);
+    expect((await restore(first)).statusCode).toBe(409);
+    expect((await restore(second)).statusCode).toBe(200);
+  });
+
+  it("fails a wrong code with a generic error, and limits attempts", async () => {
+    const wrong = await restore("ABCDE-FGHJK-MNPQR-STUVW", "device-b", "10.0.0.2");
+    expect(wrong.statusCode).toBe(409);
+    expect(errorResponseSchema.parse(wrong.json()).error.code).toBe("restore-failed");
+    for (let i = 0; i < 4; i++) await restore("NOPE", "device-b", "10.0.0.2");
+    const limited = await restore("NOPE", "device-b", "10.0.0.2");
+    expect(limited.statusCode).toBe(429);
+    expect(errorResponseSchema.parse(limited.json()).error.code).toBe("rate-limited");
+    // The same device from another network is still limited.
+    expect((await restore("NOPE", "device-b", "10.0.0.3")).statusCode).toBe(429);
+  });
+
+  it("never stores the plain code", async () => {
+    const guest = await signUp(testApp().app);
+    const code = await makeCode(guest);
+    const plain = normalizeBackupCode(code);
+    const rows = await database().db.execute(
+      sql`select row_to_json(p)::text as row from players p`,
+    );
+    for (const { row } of rows.rows as { row: string }[]) {
+      expect(row).not.toContain(code);
+      expect(row).not.toContain(plain);
+    }
+  });
+
+  it("still restores the player after they start a new company", async () => {
+    const owner = await signUpOwner(testApp().app, database().db);
+    const code = await makeCode(owner);
+    await call(testApp().app, owner, "POST", "/api/company/new", {});
+    const response = await restore(code, "device-c", "10.0.0.4");
+    expect(createGuestResponseSchema.parse(response.json())).toMatchObject({
+      playerId: owner.playerId,
+      state: { tutorial: { runsCompleted: 0 } },
+    });
+  });
+});

apps/server/test/game.ts

@@ -50,7 +50,7 @@ export function useTestApp(database: () => Database): () => TestApp {
   return () => current!;
 }
 
-function cookieFrom(setCookie: string | string[] | undefined): string {
+export function cookieFrom(setCookie: string | string[] | undefined): string {
   const values = Array.isArray(setCookie) ? setCookie : setCookie ? [setCookie] : [];
   return values.map((c) => c.split(";")[0]).join("; ");
 }

apps/server/test/migrations.test.ts

@@ -41,6 +41,7 @@ describe("database migrations", () => {
       "discovered_locations",
       "dispatches",
       "pilots",
+      "player_logins",
       "players",
       "session",
       "ship_upgrades",

memory-bank/architecture.md

@@ -62,6 +62,9 @@ The `routes` catalog is the single source for both server and client. Each entry
 | `spendSkillPoint` | `POST /api/pilots/:pilotId/skills` | `pilotId`, `skillId` | `{ pilot }` | yes |
 | `acknowledgeSummaries` | `POST /api/summaries/acknowledge` | `dispatchIds`, optional `shipIds` (finished upgrades seen; at least one id overall) | `{ acknowledged }` | yes |
 | `acceptDeal` | `POST /api/deal/accept` | — | `PlayerState` | yes |
+| `getBackupCode` | `GET /api/backup-code` | — | `{ hasCode, createdAt }` | yes |
+| `createBackupCode` | `POST /api/backup-code` | — | `{ code, createdAt }` (shown once; replaces any old code) | yes |
+| `restoreCompany` | `POST /api/restore` | `code` (case, spaces and dashes ignored); header `x-device-id` for rate limiting | `{ playerId, state }` + session cookie | no |
 | `newCompany` | `POST /api/company/new` | — | `PlayerState` (the fresh start) | yes |
 | `renameCompany` | `POST /api/company/name` | `name` (trimmed, 3–32 letters, digits, spaces, `. , ' & ! ? -`) | `{ company }` | yes |
 | `repayLoan` | `POST /api/loan/repay` | `amount` | `{ company }` | yes |
@@ -76,6 +79,7 @@ Postgres via Drizzle (`pg` driver). Migrations are SQL files in `apps/server/dri
 | `players` | Link to the Better Auth user, world seed, tutorial flag, loaner location, tutorial runs completed, deal accepted | pk `id`, unique `user_id` → `user.id` |
 | `companies` | Name, credits and loan balance (the row locked for money changes) | unique `player_id` |
 | `ships` | Owned ships: model, name, status, location (null in flight), in-shop-until and the latest shop job (upgrade id, level) until acknowledged (CR-009) | — |
+| `player_logins` | Extra sign-ins per player: a guest user created by restoring with a backup code (CR-011) | PK `user_id` |
 | `ship_upgrades` | Installed upgrade level per ship and upgrade (CR-009) | primary key (ship, upgrade) |
 | `pilots` | XP, skills (jsonb), points spent, assignment, location (unassigned only), status, duty hours, rest-ends-at (CR-004), `is_veteran` (CR-010) | unique `assigned_ship_id` (one pilot per ship) |
 | `bays` | Leased bays | unique (`player_id`, `location_id`) |

memory-bank/progress.md

@@ -259,7 +259,7 @@ Spec: `memory-bank/change-requests/CR-011-settings-backup.md` (received as "CR-0
 - [x] **Step 10K.5 — Server: rename company.** `companyNameSchema` (trimmed; 3–32 of letters, digits, spaces and `. , ' & ! ? -`) and route `renameCompany` (`POST /api/company/name`, `{ name }` → `{ company }`), run in `withPlayer`. New companies get a default name from their world seed (`companyName(seed)`, e.g. "Lodestar Haulage") instead of the fixed "Deadhead Freight". Player state already carried the name. Test: `company-name.test.ts`.
 - [x] **Step 10K.6 — Server: start a new company.** Route `newCompany` (`POST /api/company/new`, `{}` → player state) runs `newCompany` in `withPlayer` (company row lock): deletes claimed goals, accepted contracts, dispatches, boards, discovered locations, bays, pilots, ships (upgrades cascade) and the company, resets the player's tutorial fields with a new world seed, then calls `createStartingState`, now shared with guest creation. Arrival jobs for deleted flights find nothing. Test: `new-company.test.ts` (a mid-game owner ends up identical to a fresh guest, new seed, same player id; the old flight's job is a no-op). The backup-code part of the test is in 10K.8.
 - [x] **Step 10K.7 — Client: rename and new company flows.** `screens/CompanySettings.tsx`: the company name has "Rename", an in-place field checked as you type with the server's `companyNameSchema` (message under the field, Save disabled until valid; saves the trimmed name). "Start a new company" opens a confirmation explaining what is lost; "Start over" stays disabled until the exact company name is typed (case-sensitive), then calls `newCompany`, clears dismissed tips and goes to Contracts, where the intro card shows. Test: `company-settings.test.tsx`.
-- [ ] Step 10K.8 — Server: backup code and restore
+- [x] **Step 10K.8 — Server: backup code and restore.** Migration `0008_cr011_backup_codes`: `players.backup_code_hash` (unique) and `backup_code_created_at`; table `player_logins` (extra sign-ins per player). `game/backup.ts`: 20-character codes from `23456789ABCDEFGHJKMNPQRSTUVWXYZ` in four groups of five (≈ 99 bits), SHA-256 of the normalized code stored, `RestoreLimiter` (5 failures per 15 min per IP and per device id). Routes: `getBackupCode` (GET, whether one exists), `createBackupCode` (POST, new code shown once, old one invalidated), `restoreCompany` (POST `/api/restore`, no session: a fresh guest sign-in for the device linked to the code's player; `409 restore-failed` for a bad code, `429 rate-limited`). Session lookup falls back to `player_logins`. Test: `backup.test.ts` (format, restore on a second device with shared state, regenerate invalidates, wrong code and rate limit, no plain code in the database, still works after a new company).
 - [ ] Step 10K.9 — Client: backup and restore flows
 - [ ] Step 10K.10 — Client: About and debug info
 - [ ] Step 10K.11 — Client and server: developer tools (non-production only)

packages/schema/src/errors.ts

@@ -35,6 +35,8 @@ export const SERVER_ERROR_CODES = [
   "unknown-goal",
   "goal-not-ready",
   "goal-already-claimed",
+  "restore-failed",
+  "rate-limited",
 ] as const;
 
 export type ErrorCode =

packages/schema/src/requests.ts

@@ -93,3 +93,16 @@ export const companyNameSchema = z
   .max(32, "At most 32 characters")
   .regex(/^[A-Za-z0-9 .,'&!?-]+$/, "Letters, digits, spaces and . , ' & ! ? - only");
 export const renameCompanyRequestSchema = z.object({ name: companyNameSchema });
+
+/** Whether the player has a backup code, and since when (CR-011). */
+export const backupCodeStatusSchema = z.object({
+  hasCode: z.boolean(),
+  createdAt: timeSchema.nullable(),
+});
+/** A newly made backup code: shown once (decision 0.5.72). */
+export const backupCodeResponseSchema = z.object({
+  code: z.string().min(1),
+  createdAt: timeSchema,
+});
+/** A backup code typed by the player; spaces, dashes and case don't matter. */
+export const restoreRequestSchema = z.object({ code: z.string().trim().min(1).max(64) });

packages/schema/src/routes.ts

@@ -17,7 +17,10 @@ import {
   hirePilotRequestSchema,
   leaseBayRequestSchema,
   pilotResponseSchema,
+  backupCodeResponseSchema,
+  backupCodeStatusSchema,
   renameCompanyRequestSchema,
+  restoreRequestSchema,
   repayLoanRequestSchema,
   shipResponseSchema,
   spendSkillPointRequestSchema,
@@ -152,6 +155,27 @@ export const routes = {
     response: playerStateSchema,
     auth: true,
   },
+  getBackupCode: {
+    method: "GET",
+    path: "/api/backup-code",
+    request: emptyRequestSchema,
+    response: backupCodeStatusSchema,
+    auth: true,
+  },
+  createBackupCode: {
+    method: "POST",
+    path: "/api/backup-code",
+    request: emptyRequestSchema,
+    response: backupCodeResponseSchema,
+    auth: true,
+  },
+  restoreCompany: {
+    method: "POST",
+    path: "/api/restore",
+    request: restoreRequestSchema,
+    response: createGuestResponseSchema,
+    auth: false,
+  },
   newCompany: {
     method: "POST",
     path: "/api/company/new",

packages/schema/test/routes.test.ts

@@ -24,6 +24,9 @@ describe("route catalog", () => {
         "spendSkillPoint",
         "acknowledgeSummaries",
         "acceptDeal",
+        "getBackupCode",
+        "createBackupCode",
+        "restoreCompany",
         "newCompany",
         "renameCompany",
         "repayLoan",
@@ -58,8 +61,9 @@ describe("route catalog", () => {
     }
   });
 
-  it("requires a session everywhere except server time and guest creation", () => {
+  it("requires a session everywhere except server time, guest creation and restore", () => {
     const open = entries.filter(([, r]) => !r.auth).map(([name]) => name);
-    expect(open.sort()).toEqual(["createGuest", "getServerTime"]);
+    // Restoring signs a device in, so it runs without a session (CR-011).
+    expect(open.sort()).toEqual(["createGuest", "getServerTime", "restoreCompany"]);
   });
 });