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/DeveloperSettings.tsx

@@ -0,0 +1,27 @@
+"use client"
+import React, { useState } from 'react'
+
+export default function DeveloperSettings() {
+  const [env, setEnv] = useState('')
+  const [message, setMessage] = useState('')
+
+  async function handleSave() {
+    // Example: Save env to localStorage or send to API
+    localStorage.setItem('devEnv', env)
+    setMessage('Settings saved!')
+  }
+
+  return (
+    <div className="p-4 border rounded bg-gray-900">
+      <h2 className="text-lg font-bold mb-2">Developer Settings</h2>
+      <input
+        className="input input-bordered w-full mb-2"
+        placeholder="Custom ENV value"
+        value={env}
+        onChange={e => setEnv(e.target.value)}
+      />
+      <button className="btn btn-primary w-full" onClick={handleSave}>Save</button>
+      {message && <div className="mt-2 text-green-400">{message}</div>}
+    </div>
+  )
+}