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/Dashboard-minimal.tsx

@@ -0,0 +1,11 @@
+"use client"
+import React from 'react'
+
+export default function DashboardMinimal() {
+  return (
+    <div className="p-8 text-center text-gray-400">
+      <h1 className="text-2xl font-bold mb-4">Trading Bot Dashboard</h1>
+      <p>Welcome! Please select a feature from the menu.</p>
+    </div>
+  )
+}