Fix chart loading issues and remove sample position data

- Fixed TradingChart data generation to use unique daily timestamps
- Removed sample position data from trading page
- Added better error handling and logging to chart initialization
- Fixed time format issues that were preventing chart rendering
- Added test pages for debugging chart functionality

app/chart-test/page.tsx

@@ -1,6 +1,6 @@
 'use client'
 import React from 'react'
-import TradingChart from '../../components/TradingChart.tsx'
+import TradingChart from '../../components/TradingChart'
 
 export default function SimpleChartTest() {
   return (