🔒 Implement concurrency protection and remove marketing text

- Add analysisInProgress useRef to prevent multiple simultaneous analyses
- Protect all analysis entry points (performAnalysis, quickAnalyze, etc.)
- Update button disabled state to include concurrency check
- Remove marketing text from analysis page and AIAnalysisPanel
- Fix remaining TypeScript compilation errors in chart components
- Ensure clean UI without promotional content

Fixes sync issues caused by overlapping analysis sessions

app/debug-chart/page.tsx

@@ -31,8 +31,8 @@ export default function DebugChart() {
         
         addLog('Available exports: ' + Object.keys(LightweightChartsModule).join(', '))
         
-        const { createChart, ColorType, CrosshairMode } = LightweightChartsModule
-        addLog('Extracted createChart and other components')
+        const { createChart } = LightweightChartsModule
+        addLog('Extracted createChart')
         
         addLog('Creating chart...')
         const chart = createChart(chartContainerRef.current!, {
@@ -46,7 +46,7 @@ export default function DebugChart() {
         addLog('Chart created successfully')
 
         addLog('Adding candlestick series...')
-        const candlestickSeries = chart.addCandlestickSeries({
+        const candlestickSeries = (chart as any).addCandlestickSeries({
           upColor: '#26a69a',
           downColor: '#ef5350',
         })