Vest: an entry never closes a hand trade, and a flatten never opens one

sendOrder takes an optional intent. On Vest an 'open' is refused when the
account already holds the symbol, where it used to close that position as
the "entry"; the leg's exits then found nothing and its flatten opened a
fresh position with no TP or stop. A 'close' only closes or reduces, and on
a flat account is refused with NothingToCloseError, which flattenAndFail
reports as nothing to flatten instead of FLATTEN FAILED. Entries, the
extra-day round trip and flattens pass their intent; the manual order route
and the other platforms keep today's behaviour.

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

lib/auto-trade.ts

@@ -28,7 +28,7 @@ import { POINT_VALUES, housekeepingRoot, HOUSEKEEPING_ROOT, MAX_HOLD_HOURS, futu
 import { firmInstruments, drawFuturesInstrument, spreadBlock, type LegShape } from './instruments';
 import { recordEntry } from './trade-mix';
 import { sizingHoldHours } from './person-size';
-import { errorMessage, isClientReady, isOrderNotPlaced, type PlatformClient, type PlatformContract, type PickContext } from './platform-client';
+import { errorMessage, isClientReady, isNothingToClose, isOrderNotPlaced, type PlatformClient, type PlatformContract, type PickContext } from './platform-client';
 
 // ── process-wide state ───────────────────────────────────────────────────────
 
@@ -260,7 +260,9 @@ function unrecordLeg(accountId: number, tradeDate: string, legAmount: number): v
  * (OrderNotPlacedError). Anything ambiguous, like an ack or fill timeout,
  * keeps the leg: the order may well have filled, and a leg counted that never
  * happened only costs a leg, while one forgotten that did can trade the
- * account twice.
+ * account twice. Open-only: where the platform checks (Vest), an account that
+ * already holds the symbol — a hand trade the synced positions don't show
+ * yet — is refused rather than having that position closed as the "entry".
  */
 async function sendEntry(
     tag: string,
@@ -277,7 +279,7 @@ async function sendEntry(
     const at = Date.now();
     const realizedBefore = client.accountCashBalances[acc.id]?.realizedPnL ?? 0;
     try {
-        const fill = await client.sendOrder(acc.id, contractName, contracts, action, 'Market');
+        const fill = await client.sendOrder(acc.id, contractName, contracts, action, 'Market', undefined, 'open');
         outcomes.set(acc.id, { tradeDate, state: 'filled', at, realizedBefore, legAmount });
         return fill;
     } catch (err) {
@@ -1237,10 +1239,10 @@ async function runTradeLocked(
             const mnqContract = await client.findFrontMonthContract(microRoot);
             if (!mnqContract) throw new Error(`${microRoot} contract not found for extra-day trade`);
 
-            const fill = await client.sendOrder(acc.id, mnqContract.name, 1, resolvedAction, 'Market');
+            const fill = await client.sendOrder(acc.id, mnqContract.name, 1, resolvedAction, 'Market', undefined, 'open');
             recordEntry(item.firmName, microRoot, resolvedAction, 1, mnqContract.id);
             const exitAction: 'Buy' | 'Sell' = resolvedAction === 'Buy' ? 'Sell' : 'Buy';
-            const exitFill = await client.sendOrder(acc.id, mnqContract.name, 1, exitAction, 'Market');
+            const exitFill = await client.sendOrder(acc.id, mnqContract.name, 1, exitAction, 'Market', undefined, 'close');
 
             console.log(`[auto-trade] ${acc.name} (${item.firmName}) extra-day: ${resolvedAction} 1x${mnqContract.name} @ ${fill.price} | exited @ ${exitFill.price} (market)`);
 
@@ -1300,7 +1302,10 @@ const round2 = (n: number) => Math.round(n * 100) / 100;
  * Close a just-filled position at market because it must not stay open — its
  * daily-loss stop has no room, or the broker refused its exit bracket — and
  * report the leg as failed. A flatten that fails too is the worst case: a
- * position with no stop, so it is shouted about.
+ * position with no stop, so it is shouted about. Close-only: on an account
+ * that turned out flat it must not open a fresh position with no exits, and
+ * where the platform checks (Vest) that flat account has nothing riding — the
+ * leg still fails, but without the alarm.
  */
 async function flattenAndFail(
     tag: string,
@@ -1314,9 +1319,13 @@ async function flattenAndFail(
     why: string,
 ): Promise<never> {
     try {
-        const exit = await client.sendOrder(acc.id, contractName, contracts, exitAction, 'Market');
+        const exit = await client.sendOrder(acc.id, contractName, contracts, exitAction, 'Market', undefined, 'close');
         console.warn(`${tag} ${acc.name}: flattened @ ${exit.price} — ${why}`);
     } catch (err) {
+        if (isNothingToClose(err)) {
+            console.warn(`${tag} ${acc.name}: nothing to flatten — ${errorMessage(err)} (${why})`);
+            throw new Error(`entry filled @ ${entryPrice}; ${why}; already flat — nothing to flatten`);
+        }
         console.error(`${tag} ${acc.name}: FLATTEN FAILED (${errorMessage(err)}) — the position may be open WITHOUT A STOP; close it at the broker (${why})`);
         throw new Error(`entry filled @ ${entryPrice}; ${why}; flatten failed — ${errorMessage(err)}`);
     }