feat: Add persistent settings and multiple layouts support

- Add settings manager to persist symbol, timeframe, and layouts
- Support multiple layouts for comprehensive chart analysis
- Remove debug screenshots for cleaner logs
- Update AI analysis with professional trading prompt
- Add multi-screenshot analysis for better trading insights
- Update analyze API to use saved settings and multiple layouts

components/AutoTradingPanel.tsx

@@ -0,0 +1,35 @@
+"use client"
+import React, { useState } from 'react'
+
+export default function AutoTradingPanel() {
+  const [status, setStatus] = useState<'idle'|'running'|'stopped'>('idle')
+  const [message, setMessage] = useState<string>('')
+
+  async function handleAction(action: 'start'|'stop') {
+    setMessage('')
+    setStatus('idle')
+    const res = await fetch('/api/auto-trading', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ action })
+    })
+    if (res.ok) {
+      setStatus(action === 'start' ? 'running' : 'stopped')
+      setMessage(`Auto-trading ${action}ed`)
+    } else {
+      setMessage('Error: ' + (await res.text()))
+    }
+  }
+
+  return (
+    <div className="p-4 border rounded bg-gray-900">
+      <h2 className="text-lg font-bold mb-2">Auto-Trading Control</h2>
+      <div className="flex gap-2 mb-2">
+        <button className="btn btn-primary" onClick={() => handleAction('start')}>Start</button>
+        <button className="btn btn-secondary" onClick={() => handleAction('stop')}>Stop</button>
+      </div>
+      <div className="text-sm text-gray-400">Status: {status}</div>
+      {message && <div className="mt-2 text-yellow-400">{message}</div>}
+    </div>
+  )
+}