feat(relayer): migrate to SPL-token (фантики)

- ops: readGlobal читает vaultBalance (getTokenAccountBalance), createBet/closeBet передают bettorToken/vaultToken/tokenProgram, ensureVaultFunded наливает токен (mintTo, allowOwnerOffCurve)
- pda: vaultPda([global,vault]), config:.env.new SMART_TOKEN_MINT, суммы в токен-единицах
- check.ts: 14 проверок сигнатур создания create/close под новым токеновым IDL
- @solana/spl-token dependency; .gitignore + node_modules/dist

relayer/src/check.ts

@@ -0,0 +1,129 @@
+/**
+ * Оффлайн-проверка релейера (без сети): компиляция и сигнатуры под новый
+ * токеновый IDL.
+ *
+ *  1. PDA-деривации (global/bet/vault) совпадают с седами IDL.
+ *  2. Инструкции create_bet/close_bet содержат bettor_token / vault_token /
+ *     token_program с нужными адресами и writable-флагами.
+ *
+ * Запуск: `npm test`.
+ */
+import { Keypair, PublicKey } from "@solana/web3.js";
+import BN from "bn.js";
+import { getAssociatedTokenAddress, TOKEN_PROGRAM_ID } from "@solana/spl-token";
+import idl from "../idl/smart_updown.json";
+import { globalPda, betPda, vaultPda } from "./pda";
+import { makeConnection, makeProgram } from "./program";
+
+const ok = (msg: string) => console.log(`ok: ${msg}`);
+let failed = 0;
+function check(cond: boolean, msg: string): void {
+  if (cond) {
+    ok(msg);
+  } else {
+    failed++;
+    console.error(`FAIL: ${msg}`);
+  }
+}
+
+/** PDA из собственных (JSON) севов IDL — независимо от pda.ts. */
+function pdaFromIdlSeeds(programId: PublicKey, seeds: ReadonlyArray<{ kind: string; value?: unknown; path?: string }>): PublicKey {
+  const buffers = seeds.map((s) => {
+    if (s.kind === "const") return Buffer.from(s.value as number[]);
+    if (s.kind === "arg" && s.path === "id") return Buffer.alloc(8); // id = 0
+    throw new Error(`unsupported seed: ${JSON.stringify(s)}`);
+  });
+  return PublicKey.findProgramAddressSync(buffers as Buffer[], programId)[0];
+}
+
+function idlIx(name: string) {
+  const ix = (idl as any).instructions.find((i: any) => i.name === name);
+  if (!ix) throw new Error(`instruction ${name} not in IDL`);
+  return ix;
+}
+
+async function main(): Promise<void> {
+  const programId = new PublicKey((idl as any).address as string);
+  const createIx = idlIx("create_bet");
+  const closeIx = idlIx("close_bet");
+
+  // 1. PDA-деривации против севов IDL
+  const acct = (ix: any, name: string) => ix.accounts.find((a: any) => a.name === name);
+  check(
+    globalPda(programId).equals(pdaFromIdlSeeds(programId, (acct(createIx, "global") as any).pda.seeds)),
+    "globalPda совпадает с седами global из IDL"
+  );
+  check(
+    betPda(programId, new BN(0)).equals(pdaFromIdlSeeds(programId, (acct(createIx, "bet") as any).pda.seeds)),
+    "betPda(0) совпадает с седами bet из IDL"
+  );
+  check(
+    vaultPda(programId).equals(pdaFromIdlSeeds(programId, (acct(createIx, "vault_token") as any).pda.seeds)),
+    "vaultPda совпадает с седами vault_token из IDL"
+  );
+  check(
+    vaultPda(programId).equals(pdaFromIdlSeeds(programId, (acct(closeIx, "vault_token") as any).pda.seeds)),
+    "vaultPda совпадает с седами vault_token в close_bet"
+  );
+
+  // 2. Сборка инструкций оффлайн и проверка ключей
+  const connection = makeConnection("http://127.0.0.1:8899"); // не используется сетью
+  const admin = Keypair.generate();
+  const bettor = Keypair.generate();
+  const mint = new PublicKey("11111111111111111111111111111111"); // плейсхолдер
+  const program = makeProgram(connection, admin);
+
+  const vaultToken = vaultPda(program.programId);
+  const bettorToken = await getAssociatedTokenAddress(mint, bettor.publicKey);
+
+  const create = await program.methods
+    .createBet(new BN(0), new BN(0), new BN(100), new BN(100_000_000))
+    .accountsPartial({
+      bettor: bettor.publicKey,
+      bettorToken: bettorToken,
+      vaultToken: vaultToken,
+      tokenProgram: TOKEN_PROGRAM_ID,
+    })
+    .signers([bettor])
+    .instruction();
+
+  check(create.programId.equals(programId), "create_bet: programId");
+  const cByName = (p: PublicKey) => create.keys.find((k) => k.pubkey.equals(p));
+  check(!!(cByName(bettor.publicKey)!.isSigner && cByName(bettor.publicKey)!.isWritable), "create_bet: bettor — writable signer");
+  check(!!(cByName(bettorToken)!.isWritable && !cByName(bettorToken)!.isSigner), "create_bet: bettor_token — writable");
+  check(!!(cByName(vaultToken)!.isWritable && !cByName(vaultToken)!.isSigner), "create_bet: vault_token — writable");
+  check(cByName(TOKEN_PROGRAM_ID) !== undefined && !cByName(TOKEN_PROGRAM_ID)!.isWritable, "create_bet: token_program присутствует");
+  check(create.keys.length === 8, "create_bet: 8 аккаунтов (IDL-состав)");
+
+  const close = await program.methods
+    .closeBet(new BN(0), new BN(100_100_000))
+    .accountsPartial({
+      relayer: admin.publicKey,
+      bettor: bettor.publicKey,
+      bettorToken: bettorToken,
+      vaultToken: vaultToken,
+      tokenProgram: TOKEN_PROGRAM_ID,
+    })
+    .signers([admin])
+    .instruction();
+
+  check(close.programId.equals(programId), "close_bet: programId");
+  const kByName = (p: PublicKey) => close.keys.find((k) => k.pubkey.equals(p));
+  check(kByName(admin.publicKey)!.isSigner, "close_bet: relayer — signer");
+  check(kByName(bettor.publicKey) !== undefined && !kByName(bettor.publicKey)!.isSigner, "close_bet: bettor — не signer");
+  check(!!(kByName(bettorToken)!.isWritable), "close_bet: bettor_token — writable");
+  check(!!(kByName(vaultToken)!.isWritable), "close_bet: vault_token — writable");
+  check(kByName(TOKEN_PROGRAM_ID) !== undefined && !kByName(TOKEN_PROGRAM_ID)!.isWritable, "close_bet: token_program присутствует");
+  check(close.keys.length === 8, "close_bet: 8 аккаунтов (IDL-состав)");
+
+  if (failed > 0) {
+    console.error(`\ncheck: ${failed} проверок ПРОВАЛЕНО`);
+    process.exit(1);
+  }
+  console.log("\ncheck: все проверки пройдены — сигнатуры релейера соответствуют новому токеновому IDL.");
+}
+
+main().catch((e) => {
+  console.error(e);
+  process.exit(1);
+});

relayer/src/config.ts

@@ -13,15 +13,23 @@ export const SIDE_DOWN = 1;
 export interface Config {
   /** RPC endpoint of the cluster (localnet by default). */
   rpcUrl: string;
-  /** Localnet allows naive airdrops (to bettors and the house vault). */
+  /**
+   * Localnet allows naive funding: SOL airdrop to bettors (rent/fees) and
+   * minting tokens into the vault via the mint authority. Disable on mainnet.
+   */
   allowAirdrop: boolean;
   /** Program id. Defaults to the value embedded in the IDL. */
   programId: PublicKey;
-  /** House admin/relayer keypair file path. */
+  /**
+   * Mint of our SPL "фантики" (decimals = 6, per the contract).
+   * All amounts in this relayer are token base units of this mint.
+   */
+  tokenMint: PublicKey;
+  /** House admin/relayer keypair path (also the localnet mint authority). */
   adminKeypairPath: string;
-  /** Initial parameters used by `init` (must match on-chain constants). */
-  minAmountLamports: number;
-  maxAmountLamports: number;
+  /** Bet amount bounds in token base units (NOT lamports); must match the on-chain `initialize` values. */
+  minAmount: number;
+  maxAmount: number;
   multiplierBps: number;
   expirySeconds: number;
 }
@@ -43,14 +51,17 @@ export function loadConfig(): Config {
   const allowAirdrop = env("SMART_ALLOW_AIRDROP", "1") === "1";
   const adminKeypairPath =
     env("SMART_ADMIN_KEYPAIR", path.join(os.homedir(), ".config/solana/id.json"));
+  const tokenMintRaw = env("SMART_TOKEN_MINT", "");
 
   return {
     rpcUrl,
     allowAirdrop,
     programId: PublicKey.default, // placeholder; real value read from the IDL below
+    // Плейсхолдер: настоящий адрес фантичного mint задаётся через SMART_TOKEN_MINT.
+    tokenMint: tokenMintRaw ? new PublicKey(tokenMintRaw) : PublicKey.default,
     adminKeypairPath,
-    minAmountLamports: envNum("SMART_MIN_AMOUNT", 100_000_000), // 0.1 SOL
-    maxAmountLamports: envNum("SMART_MAX_AMOUNT", 10_000_000_000), // 10 SOL
+    minAmount: envNum("SMART_MIN_AMOUNT", 100_000_000), // 100 фантиков (decimals = 6)
+    maxAmount: envNum("SMART_MAX_AMOUNT", 10_000_000_000), // 10 000 фантиков
     multiplierBps: envNum("SMART_MULTIPLIER_BPS", 13_000), // 1.3x
     expirySeconds: envNum("SMART_EXPIRY_SECONDS", 15),
   };

relayer/src/frontStub.ts

@@ -11,7 +11,8 @@ import { SIDE_DOWN, SIDE_UP } from "./config";
 export interface BetRequest {
   bettor: Keypair;
   side: number; // SIDE_UP | SIDE_DOWN
-  amountLamports: number;
+  /** Сумма ставки в базовых юнитах SPL-токена (не лампорты). */
+  amount: number;
 }
 
 /** Очередь входящих ставок. В заглушке наполняем случайными значениями. */
@@ -20,5 +21,5 @@ export function nextBetRequest(minAmount: number, maxAmount: number): BetRequest
   const side = Math.random() < 0.5 ? SIDE_UP : SIDE_DOWN;
   const amount =
     minAmount + Math.floor(Math.random() * (maxAmount - minAmount + 1));
-  return { bettor, side, amountLamports: amount };
+  return { bettor, side, amount };
 }

relayer/src/index.ts

@@ -1,4 +1,5 @@
 import { LAMPORTS_PER_SOL, PublicKey } from "@solana/web3.js";
+import { getMint } from "@solana/spl-token";
 import { Program } from "@anchor-lang/core";
 import { loadConfig, loadKeypair, SIDE_UP } from "./config";
 import { getPrice } from "./priceSource";
@@ -9,6 +10,7 @@ import {
   closeBet,
   readGlobal,
   ensureVaultFunded,
+  ensureBettorTokenAccount,
 } from "./ops";
 import { betPda } from "./pda";
 import { makeConnection, makeProgram } from "./program";
@@ -21,6 +23,8 @@ const sleep = (ms: number) => new Promise((r) => setTimeout(r, ms));
 
 const STATUS_OPEN = 0;
 async function fundBettor(connection: any, bettorPubkey: PublicKey): Promise<void> {
+  // SOL всё ещё нужен беттору: рент PDA-аккаунта ставки + комиссия за tx.
+  // Саму ставку (фантики) он закрывает из своего токен-аккаунта (ATA).
   const bal = await connection.getBalance(bettorPubkey);
   if (bal < 2 * LAMPORTS_PER_SOL_NUM) {
     await connection.requestAirdrop(bettorPubkey, 5 * LAMPORTS_PER_SOL_NUM);
@@ -29,13 +33,23 @@ async function fundBettor(connection: any, bettorPubkey: PublicKey): Promise<voi
   }
 }
 
+/** Человекочитаемо-формат: токен-юниты -> "N.NNNNNN" по decimals. */
+function humanize(units: string | number | bigint, decimals: number): string {
+  const n = BigInt(units);
+  const sign = n < 0n ? "-" : "";
+  const abs = n < 0n ? -n : n;
+  const pow = 10n ** BigInt(decimals);
+  return `${sign}${abs / pow}.${(abs % pow).toString().padStart(decimals, "0")}`;
+}
+
 /** Закрывает ставку, повторяя при «equal price» (exit==entry) пока не зафиналится. */
 async function settleBet(
   program: Program<SmartUpdown>,
   id: any,
   entryPrice: number,
   relayer: any,
-  bettor: PublicKey
+  bettor: PublicKey,
+  mint: PublicKey
 ): Promise<void> {
   for (let attempt = 1; ; attempt++) {
     const exitPrice = await getPrice();
@@ -44,7 +58,7 @@ async function settleBet(
       await sleep(2000);
       continue;
     }
-    const sig = await closeBet(program, id, exitPrice, relayer, bettor);
+    const sig = await closeBet(program, id, exitPrice, relayer, bettor, mint);
     console.log(`close_bet #${id} exit=${exitPrice} (attempt ${attempt}) tx=${sig}`);
 
     const status = await getStatus(program, id);
@@ -70,6 +84,15 @@ async function main(): Promise<void> {
 
   console.log(`RPC: ${cfg.rpcUrl}`);
   console.log(`Admin/relayer: ${admin.publicKey.toBase58()}`);
+  console.log(`Token mint: ${cfg.tokenMint.toBase58()}`);
+
+  // Decimals фантиков (см. state.rs = 6). Только для человекочитаемых логов.
+  let decimals = 6;
+  try {
+    decimals = (await getMint(connection, cfg.tokenMint)).decimals;
+  } catch {
+    // mint ещё не создан (плейсхолдер) — дефолт из ТЗ контракта
+  }
 
   const global = await readGlobal(program, program.programId);
   if (!global) {
@@ -79,21 +102,21 @@ async function main(): Promise<void> {
       );
     }
     await initialize(program, {
-      minAmount: cfg.minAmountLamports,
-      maxAmount: cfg.maxAmountLamports,
+      minAmount: cfg.minAmount,
+      maxAmount: cfg.maxAmount,
       multiplierBps: cfg.multiplierBps,
       expirySeconds: cfg.expirySeconds,
     }, admin);
     console.log("Контракт инициализирован.");
   } else {
     console.log(
-      `Global: counter=${global.counter} vault=${(global.lamports / LAMPORTS_PER_SOL_NUM).toFixed(2)} SOL ` +
+      `Global: counter=${global.counter} vault=${humanize(global.vaultBalance, decimals)} fant ` +
         `expiry=${global.expirySeconds}s paused=${global.paused}`
     );
   }
 
   if (cfg.allowAirdrop) {
-    await ensureVaultFunded(connection, program, 10 * LAMPORTS_PER_SOL_NUM);
+    await ensureVaultFunded(connection, program, admin, cfg);
   }
 
   const loops = process.argv.includes("--once") ? 1 : Infinity;
@@ -101,24 +124,26 @@ async function main(): Promise<void> {
 
   while (n < loops) {
     n++;
-    const req = nextBetRequest(cfg.minAmountLamports, cfg.maxAmountLamports);
+    const req = nextBetRequest(cfg.minAmount, cfg.maxAmount);
     await fundBettor(connection, req.bettor.publicKey);
+    // Беттору нужен токен-аккаунт (ATA) — без него create_bet не пройдёт.
+    await ensureBettorTokenAccount(connection, admin, cfg.tokenMint, req.bettor.publicKey);
 
     const entryPrice = await getPrice();
-    await createBet(program, req.bettor, {
+    await createBet(program, cfg.tokenMint, req.bettor, {
       side: req.side,
-      amount: req.amountLamports,
+      amount: req.amount,
       entryPrice,
     });
 
     console.log(
-      `ставка ${req.side === SIDE_UP ? "UP" : "DOWN"} на ${(req.amountLamports / LAMPORTS_PER_SOL_NUM).toFixed(3)} SOL, жду ${cfg.expirySeconds}s...`
+      `ставка ${req.side === SIDE_UP ? "UP" : "DOWN"} на ${humanize(req.amount, decimals)} fant, жду ${cfg.expirySeconds}s...`
     );
     await sleep((cfg.expirySeconds + 1) * 1000);
 
     const g0 = await readGlobal(program, program.programId);
     const id = g0!.counter.subn(1);
-    await settleBet(program, id, entryPrice, admin, req.bettor.publicKey);
+    await settleBet(program, id, entryPrice, admin, req.bettor.publicKey, cfg.tokenMint);
 
     const outcome = await program.account.bet.fetchNullable(betPda(program.programId, id));
     console.log(

relayer/src/ops.ts

@@ -1,14 +1,26 @@
-import { Connection, Keypair, LAMPORTS_PER_SOL, PublicKey } from "@solana/web3.js";
+import { Connection, Keypair, PublicKey } from "@solana/web3.js";
+import {
+  TOKEN_PROGRAM_ID,
+  createAssociatedTokenAccount,
+  getAccount,
+  getAssociatedTokenAddress,
+  getOrCreateAssociatedTokenAccount,
+  mintTo,
+} from "@solana/spl-token";
 import BN from "bn.js";
 import { Program } from "@anchor-lang/core";
-import { SIDE_UP } from "./config";
-import { globalPda } from "./pda";
+import { Config, SIDE_UP } from "./config";
+import { globalPda, vaultPda } from "./pda";
 
 import type { SmartUpdown } from "../idl/smart_updown";
 
-const LAMPORTS_PER_SOL_NUM = Number(LAMPORTS_PER_SOL);
+const BPS_DIVISOR = 10_000n;
 
-/** Считывает account Global (ваулт). Возвращает null, если ещё не инициализирован. */
+/**
+ * Считывает account Global + баланс токеного ваулта.
+ * Возвращает null, если глобальное состояние ещё не инициализировано.
+ * Суммы — в базовых юнитах SPL-токена (decimals = 6), не в лампортах.
+ */
 export async function readGlobal(
   program: Program<SmartUpdown>,
   programId: PublicKey
@@ -21,12 +33,21 @@ export async function readGlobal(
   paused: BN;
   admin: PublicKey;
   relayer: PublicKey;
-  lamports: number;
+  /** Баланс vaultToken (PDA-ваула) в токен-юнитах; "0", если аккаунт ещё не создан. */
+  vaultBalance: string;
 } | null> {
   const global = globalPda(programId);
   const raw = await program.account.global.fetchNullable(global);
   if (!raw) return null;
-  const lamports = await program.provider.connection.getBalance(global);
+  let vaultBalance = "0";
+  try {
+    const bal = await program.provider.connection.getTokenAccountBalance(
+      vaultPda(programId)
+    );
+    vaultBalance = bal.value.amount || "0";
+  } catch {
+    vaultBalance = "0";
+  }
   return {
     counter: raw.counter,
     minAmount: raw.minAmount,
@@ -36,7 +57,7 @@ export async function readGlobal(
     paused: raw.paused,
     admin: raw.admin,
     relayer: raw.relayer,
-    lamports,
+    vaultBalance,
   };
 }
 
@@ -58,7 +79,7 @@ export async function initialize(
       new BN(args.multiplierBps),
       new BN(args.expirySeconds)
     )
-    .accounts({
+    .accountsPartial({
       admin: admin.publicKey,
     })
     .signers([admin])
@@ -69,6 +90,7 @@ export async function initialize(
 /** Создаёт ставку от имени пользователя. Возвращает фактический id (== counter). */
 export async function createBet(
   program: Program<SmartUpdown>,
+  mint: PublicKey,
   bettor: Keypair,
   args: { side: number; amount: number; entryPrice: number }
 ): Promise<BN> {
@@ -77,15 +99,25 @@ export async function createBet(
   const id = global.counter;
 
   const sig = await program.methods
-    .createBet(new BN(id), new BN(args.side), new BN(args.amount), new BN(args.entryPrice))
-    .accounts({
+    .createBet(
+      new BN(id),
+      new BN(args.side),
+      new BN(args.amount),
+      new BN(args.entryPrice)
+    )
+    .accountsPartial({
       bettor: bettor.publicKey,
+      bettorToken: await getAssociatedTokenAddress(mint, bettor.publicKey),
+      vaultToken: vaultPda(program.programId),
+      tokenProgram: TOKEN_PROGRAM_ID,
     })
     .signers([bettor])
     .rpc();
 
-  console.log(`create_bet #${id} side=${args.side === SIDE_UP ? "UP" : "DOWN"} ` +
-    `amount=${(args.amount / LAMPORTS_PER_SOL_NUM).toFixed(3)} SOL entry=${args.entryPrice} tx=${sig}`);
+  console.log(
+    `createBet #${id} side=${args.side === SIDE_UP ? "UP" : "DOWN"} ` +
+      `amount=${args.amount} (token base units) entry=${args.entryPrice} tx=${sig}`
+  );
   return id;
 }
 
@@ -99,33 +131,67 @@ export async function closeBet(
   id: BN,
   exitPrice: number,
   relayer: Keypair,
-  bettor: PublicKey
+  bettor: PublicKey,
+  mint: PublicKey
 ): Promise<string> {
   return program.methods
     .closeBet(new BN(id), new BN(exitPrice))
-    .accounts({
+    .accountsPartial({
       relayer: relayer.publicKey,
       bettor,
+      bettorToken: await getAssociatedTokenAddress(mint, bettor),
+      vaultToken: vaultPda(program.programId),
+      tokenProgram: TOKEN_PROGRAM_ID,
     })
     .signers([relayer])
     .rpc();
 }
 
+/**
+ * Создаёт ATA беттора, если ещё нет (рент платит админ; сам ATA не требует
+ * подписи владельца). Без аккаунта createBet не пройдёт: контракт сам
+ * его не инициализирует.
+ */
+export async function ensureBettorTokenAccount(
+  connection: Connection,
+  admin: Keypair,
+  mint: PublicKey,
+  bettor: PublicKey
+): Promise<void> {
+  const ata = await getAssociatedTokenAddress(mint, bettor);
+  try {
+    await getAccount(connection, ata);
+  } catch {
+    await createAssociatedTokenAccount(connection, admin, mint, bettor);
+    console.log(`bettor ATA created ${bettor.toBase58()} -> ${ata.toBase58()}`);
+  }
+}
+
 /**
  * Догружает ваулт (house bankroll), чтобы хватило на выплаты 1.3x.
- * На localnet используем airDrop на PDA ваулта; на mainnet воздух не накапает —
- * там нужно переводить SOL с админа (off-chain, вне этого CLI).
+ * Теперь это ТОКЕН, не SOL: на localnet mint-авторитетом выступает admin
+ * (см. state.rs: decimals = 6), так что наливается через mintTo в PDA-ваулт.
+ * На mainnet наливается off-chain переводом фантиков (вне этого CLI).
  */
 export async function ensureVaultFunded(
   connection: Connection,
   program: Program<SmartUpdown>,
-  amountLamports: number
+  admin: Keypair,
+  cfg: Config
 ): Promise<void> {
-  const global = globalPda(program.programId);
-  const current = await connection.getBalance(global);
-  const needed = amountLamports; // будущая выплата (до 1.3x), запасаем с запасом
-  if (current >= needed) return;
-  const topUp = needed - current + 5 * LAMPORTS_PER_SOL_NUM; // +5 SOL запаса
-  await connection.requestAirdrop(global, topUp);
-  console.log(`vault funded +${(topUp / LAMPORTS_PER_SOL_NUM).toFixed(2)} SOL`);
+  const mint = cfg.tokenMint;
+  const vaultToken = vaultPda(program.programId);
+
+  // PDA-ваулт (ATA с owner = PDA([global, vault])) может не существовать —
+  // контракт его не создаёт. ATA не требует подписи owner (allowOwnerOffCurve),
+  // поэтому создаём её от имени admin.
+  await getOrCreateAssociatedTokenAccount(connection, admin, mint, vaultToken, true);
+
+  const bal = await connection.getTokenAccountBalance(vaultToken);
+  const current = BigInt(bal.value.amount || "0");
+  const target = (BigInt(cfg.maxAmount) * BigInt(cfg.multiplierBps) / BPS_DIVISOR) * 2n;
+  if (current >= target) return;
+  const topUp = target - current;
+  await mintTo(connection, admin, mint, vaultToken, admin, topUp);
+  console.log(`vault funded +${topUp} token base units (target ${target})`);
 }

relayer/src/pda.ts

@@ -4,6 +4,7 @@ import BN from "bn.js";
 /** Seeds, согласованные с контрактом (см. constants.rs). */
 export const GLOBAL_SEED = Buffer.from("global");
 export const BET_SEED = Buffer.from("bet");
+export const VAULT_SEED = Buffer.from("vault");
 
 export function globalPda(programId: PublicKey): PublicKey {
   return PublicKey.findProgramAddressSync([GLOBAL_SEED], programId)[0];
@@ -14,3 +15,12 @@ export function betPda(programId: PublicKey, id: BN): PublicKey {
   idLE.writeBigUInt64LE(BigInt(id.toString(10)));
   return PublicKey.findProgramAddressSync([BET_SEED, idLE], programId)[0];
 }
+
+/**
+ * PDA токеного ваулта: PDA([GLOBAL_SEED, VAULT_SEED]) — совпадает с контрактом
+ * (vault_token в create_bet/close_bet). Сам по себе global PDA ([GLOBAL_SEED])
+ * ваултом быть не может: это адрес state-аккаунта.
+ */
+export function vaultPda(programId: PublicKey): PublicKey {
+  return PublicKey.findProgramAddressSync([GLOBAL_SEED, VAULT_SEED], programId)[0];
+}