Broker sessions rest while nothing needs them

A firm's client used to stay logged in around the clock, renewing on a fixed
timer overnight and at weekends. Now, once a firm has nothing open, nothing
pending and nothing left to trade before its next session for a random
15–45 minutes, its client disconnects and the dashboard shows it Resting.
It logs back in a random 20–50 minutes before the next session opens, at a
check-in every 3–7 Central daytime hours, or at once when trading starts, a
manual leg, copy trade, manual order or AutoBuyer run needs it. Token
renewals fall at random points (Tradovate 15–45 min before expiry, TopstepX
every 45–150 min). Settings → Trading → Rest idle broker sessions
(session_rest) turns it off.

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

app/api/firms/[id]/orders/route.ts

@@ -1,7 +1,7 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { getCachedFirm } from '@/lib/firm-catalog';
 import { firmInstruments, isFuturesFirm } from '@/lib/instruments';
-import { getClients } from '@/lib/clients';
+import { getClients, isWaking, wakeFirm } from '@/lib/clients';
 
 export async function POST(
     req: NextRequest,
@@ -27,6 +27,11 @@ export async function POST(
         const clients = getClients();
         const client = clients.get(firmId);
         if (!client) return NextResponse.json({ error: 'Client not found for firm' }, { status: 404 });
+        // A resting session (lib/clients.ts) holds no login: start one, and
+        // let the caller come back once it's up.
+        if (wakeFirm(firmId, 'manual order') || isWaking(firmId)) {
+            return NextResponse.json({ error: "the firm's session is logging back in — try again in a minute" }, { status: 503 });
+        }
 
         // A futures firm trades only what its instrument list (master Firms
         // page) names.