Fix 400 error when starting scheduler with Random symbol

Skip POINT_VALUES validation for 'Random' — the symbol is resolved
to a real instrument inside runTrade before any point value lookup.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/api/trade/route.ts

@@ -11,14 +11,14 @@ export async function POST(req: NextRequest) {
             return NextResponse.json({ error: 'Missing required fields: action, symbol' }, { status: 400 });
         }
 
-        if (!POINT_VALUES[symbol]) {
+        if (symbol !== 'Random' && !POINT_VALUES[symbol]) {
             return NextResponse.json({ error: `Unknown symbol: ${symbol}` }, { status: 400 });
         }
 
         // Execute trade immediately for all eligible accounts
         const results = await runTrade(action, symbol);
 
-        // (Re)start the 60-second scheduler with this action + symbol
+        // (Re)start the scheduler with this action + symbol
         startScheduler(action, symbol);
 
         return NextResponse.json(results);