Vest platform: a client for Vest Markets, traded on a session the extension relays

Vest (next.vestmarkets.com) is a perps prop firm: index, metal and energy
perps on CME hours, plus stocks, FX and crypto. It joins as a fourth
platform, 'vest', on the DXtrade engine paths. Those are now keyed by
isNotionalPlatform() instead of === 'dxtrade': the firm's own symbols,
percent fees, notional sizing from volatility, and a scheduler lane of its
own.

- Login is relayed, not stored. Vest signs people in with Google through
  Privy and renews the session with a device key the browser won't export.
  Extension 0.17.0's vest-relay.js reads the token the Vest app renews for
  itself (~15 min). It renews nothing, so the tab is never logged out. The
  background script posts that token to POST /api/vest/session, which holds
  it in memory only. With no Vest tab open on a machine that trades Vest,
  the extension opens one.
- The firm's credential is the Vest login's wallet address. The dashboard's
  form offers the relayed wallet with one click.
- VestClient (lib/vest-class.ts), mapped from the web app's traffic and code
  since Vest publishes no API:
  - Reads the capital accounts, balances (free amount plus position
    collateral), positions and open orders with the user token.
  - Mints per-account tokens for orders and transactions.
  - Names accounts for their rules (V50K-E-D3-T10-34, V50K-F-D3-34,
    V25K-I-7) so account-type prefixes can match.
  - Takes Vest's own max-drawdown and daily-loss floors. dayStartBalance =
    floor + the type's limit, so the engine's room is never more than
    Vest's.
  - Uses each symbol's taker fee and margin rate from exchangeInfo, and
    hourly volatility over in-session hours only.
  - Places take-profit and stop as position legs, which Vest cancels as an
    OCO pair.
- Daily P&L and fund rows come from /v3/transactions by Vest's 20:00 ET
  day. A books check holds an account, naming the transaction types, when
  the balance and the transactions disagree.
- scripts/check-vest.mjs (in npm run check): Vest's day across DST, account
  names, parsing, volatility gaps, market hours, the session store.

Not yet run against Vest with a live session: the order and exit bodies
come from the app's code, and the transaction classification from its enum.

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

lib/auto-trade.ts

@@ -23,6 +23,7 @@ import {
 } from './trading-logic';
 import { getSetting, setSetting, loadAccountMeta, saveAccountMeta } from './db';
 import type { LaneTick, TickReason } from './master-protocol';
+import { isNotionalPlatform } from './master-protocol';
 import { POINT_VALUES, housekeepingRoot, HOUSEKEEPING_ROOT, MAX_HOLD_HOURS, futuresContracts } from './instrument-specs';
 import { firmInstruments, drawFuturesInstrument, spreadBlock, type LegShape } from './instruments';
 import { recordEntry } from './trade-mix';
@@ -310,10 +311,11 @@ interface FirmClient { firm: TradableFirm; client: PlatformClient }
  * multi-hour crypto position never holds up the futures open and a stuck
  * futures position never freezes a 24/7 firm's weekend. Every CME-futures
  * firm (Tradovate, TopstepX) shares the one 'futures' lane — exactly how all
- * firms traded before lanes existed; each DXTrade firm is a lane of its own.
+ * firms traded before lanes existed; each DXTrade or Vest firm is a lane of
+ * its own.
  */
 export function laneOf(firm: { id: string; platform: string }): string {
-    return firm.platform === 'dxtrade' ? firm.id : FUTURES_LANE;
+    return isNotionalPlatform(firm.platform) ? firm.id : FUTURES_LANE;
 }
 const FUTURES_LANE = 'futures';
 
@@ -455,9 +457,9 @@ function releaseTradeMutex(lease: number, lane: string): void {
 
 /** What a firm's tiny legs (drain, extra-day) trade: a futures firm the
  *  micro of what it lists (MNQ when NQ is listed, as always — see
- *  housekeepingRoot); a DXtrade firm its current pick. */
+ *  housekeepingRoot); a DXtrade or Vest firm its current pick. */
 function housekeepingFor(firm: { platform: string; instruments?: string[]; bannedSymbols?: string[]; symbolMap?: Record<string, { symbol: string }[]> }): string {
-    if (firm.platform === 'dxtrade') return '*';
+    if (isNotionalPlatform(firm.platform)) return '*';
     return housekeepingRoot(firmInstruments(firm)) ?? HOUSEKEEPING_ROOT;
 }
 
@@ -1830,11 +1832,11 @@ export async function fireManualLeg(accountId: number, action: 'Buy' | 'Sell' |
             cash: ev.cash, dailyPnL: ev.dailyPnL, plan: ev.plan, drain: ev.drain,
             prefix: cfg.prefix, dllRoom: room,
         };
-        // The instrument: a DXtrade firm ranks its list; a futures firm joins the
-        // held root, else trades an explicit scheduler symbol it lists, else
-        // draws from its list.
+        // The instrument: a DXtrade or Vest firm ranks its list; a futures
+        // firm joins the held root, else trades an explicit scheduler symbol
+        // it lists, else draws from its list.
         let symbol = '*';
-        if (firm.platform !== 'dxtrade') {
+        if (!isNotionalPlatform(firm.platform)) {
             const listed = firmInstruments(firm);
             const state = getState();
             const found = held.length > 0 ? await heldRoot(client, held[0].contractId, [...listed, housekeepingFor(firm)]) : null;