Feat: API route to expose worker state to frontend

app/api/state/route.js

@@ -0,0 +1,23 @@
+import { NextResponse } from 'next/server';
+import fs from 'fs';
+
+export const dynamic = 'force-dynamic';
+
+const STATE_FILE = '/tmp/kalbot-state.json';
+
+export async function GET() {
+  try {
+    const raw = fs.readFileSync(STATE_FILE, 'utf-8');
+    const data = JSON.parse(raw);
+    return NextResponse.json(data);
+  } catch (e) {
+    return NextResponse.json({
+      market: null,
+      paper: { balance: 1000, totalPnL: 0, wins: 0, losses: 0, winRate: 0, openPositions: [], totalTrades: 0 },
+      strategies: [],
+      workerUptime: 0,
+      lastUpdate: null,
+      error: 'Worker not running or no data yet'
+    });
+  }
+}