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

app/api/analyze/route.ts

@@ -0,0 +1,53 @@
+import { NextRequest, NextResponse } from 'next/server'
+import { aiAnalysisService } from '../../../lib/ai-analysis'
+import { tradingViewCapture } from '../../../lib/tradingview'
+import { settingsManager } from '../../../lib/settings'
+import path from 'path'
+
+export async function POST(req: NextRequest) {
+  try {
+    const { symbol, layouts, timeframe } = await req.json()
+    
+    // Load current settings
+    const settings = await settingsManager.loadSettings()
+    
+    // Use provided values or fall back to saved settings
+    const finalSymbol = symbol || settings.symbol
+    const finalTimeframe = timeframe || settings.timeframe
+    const finalLayouts = layouts || settings.layouts
+    
+    if (!finalSymbol) {
+      return NextResponse.json({ error: 'Missing symbol' }, { status: 400 })
+    }
+    
+    const baseFilename = `${finalSymbol}_${finalTimeframe}_${Date.now()}`
+    const screenshots = await tradingViewCapture.capture(finalSymbol, `${baseFilename}.png`, finalLayouts, finalTimeframe)
+    
+    let result
+    if (screenshots.length === 1) {
+      // Single screenshot analysis
+      const filename = path.basename(screenshots[0])
+      result = await aiAnalysisService.analyzeScreenshot(filename)
+    } else {
+      // Multiple screenshots analysis
+      const filenames = screenshots.map(screenshot => path.basename(screenshot))
+      result = await aiAnalysisService.analyzeMultipleScreenshots(filenames)
+    }
+    
+    if (!result) {
+      return NextResponse.json({ error: 'Analysis failed' }, { status: 500 })
+    }
+    
+    return NextResponse.json({
+      ...result,
+      settings: {
+        symbol: finalSymbol,
+        timeframe: finalTimeframe,
+        layouts: finalLayouts
+      },
+      screenshots: screenshots.map(s => path.basename(s))
+    })
+  } catch (e: any) {
+    return NextResponse.json({ error: e.message }, { status: 500 })
+  }
+}