Fix consistency bug, rename Random to Auto, add stop-after-all, direction pills, copy-trade

Bug fixes:
- Fix computeDailyTarget when consistency is 0% or 100%: treat as no constraint,
  letting min-day reservation or full remaining profit drive the target
- Rename 'Random' to 'Auto' across entire codebase (types, API, UI, scheduler)

Features:
- Add "Stop after all eligible" checkbox: auto-stops scheduler when all
  configured accounts are dead, inactive, already traded, or challenge complete
- Show position direction in status pill: "Long" (green) / "Short" (red)
  instead of generic "In Trade" (blue)
- Add "Copy to Max" button: copies current trade direction to remaining
  eligible accounts up to max_concurrent_accounts limit

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/api/trade/route.ts

@@ -4,14 +4,14 @@ import { POINT_VALUES } from '@/lib/trading-logic';
 
 export async function POST(req: NextRequest) {
     try {
-        const body = await req.json() as { action: 'Buy' | 'Sell' | 'Random'; symbol: string };
-        const { action, symbol } = body;
+        const body = await req.json() as { action: 'Buy' | 'Sell' | 'Auto'; symbol: string; stopAfterAll?: boolean };
+        const { action, symbol, stopAfterAll } = body;
 
         if (!action || !symbol) {
             return NextResponse.json({ error: 'Missing required fields: action, symbol' }, { status: 400 });
         }
 
-        if (symbol !== 'Random' && !POINT_VALUES[symbol]) {
+        if (symbol !== 'Auto' && !POINT_VALUES[symbol]) {
             return NextResponse.json({ error: `Unknown symbol: ${symbol}` }, { status: 400 });
         }
 
@@ -19,7 +19,7 @@ export async function POST(req: NextRequest) {
         const results = await runTrade(action, symbol);
 
         // (Re)start the scheduler with this action + symbol
-        startScheduler(action, symbol);
+        startScheduler(action, symbol, stopAfterAll ?? false);
 
         return NextResponse.json(results);
     } catch (err: any) {