🔒 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/analysis/page.js

@@ -5,16 +5,6 @@ import AIAnalysisPanel from '../../components/AIAnalysisPanel'
 export default function AnalysisPage() {
   return (
     <div className="space-y-8">
-      <div className="text-center mb-8">
-        <h1 className="text-3xl font-bold text-white mb-4">
-          🤖 AI-Powered Market Analysis
-        </h1>
-        <p className="text-gray-400 max-w-2xl mx-auto">
-          Get professional trading insights with multi-timeframe analysis, precise entry/exit levels, 
-          and institutional-quality recommendations powered by OpenAI.
-        </p>
-      </div>
-      
       <AIAnalysisPanel />
     </div>
   )