feat: Fix position calculator visibility and add auto-detection

- Fixed position calculator not showing when analysis entry price is 0
- Added auto-detection of Long/Short position type from AI analysis recommendation
- Implemented independent price fetching from CoinGecko API
- Added current market price display with AI recommendation
- Enhanced position calculator with fallback prices for testing
- Added API endpoint /api/price for real-time price data
- Position calculator now works even when analysis lacks specific entry prices
- Shows 'Auto-detected from analysis' label when position type is determined from AI

The position calculator is now always visible and uses:
1. Current market price from CoinGecko API
2. Auto-detected position type from analysis (Long/Short)
3. Fallback prices for testing when API is unavailable
4. Default stop loss/take profit levels when not specified in analysis

app/api/price/route.js

@@ -0,0 +1,75 @@
+import { NextResponse } from 'next/server'
+
+export async function GET(request) {
+  const { searchParams } = new URL(request.url)
+  const symbol = searchParams.get('symbol') || 'BTCUSD'
+  
+  try {
+    // Map symbols to CoinGecko IDs
+    const symbolMap = {
+      'BTCUSD': 'bitcoin',
+      'ETHUSD': 'ethereum',
+      'SOLUSD': 'solana',
+      'SUIUSD': 'sui',
+      'ADAUSD': 'cardano',
+      'DOGEUSD': 'dogecoin',
+      'XRPUSD': 'ripple',
+      'AVAXUSD': 'avalanche-2',
+      'LINKUSD': 'chainlink',
+      'MATICUSD': 'matic-network'
+    }
+
+    const coinId = symbolMap[symbol.toUpperCase()] || 'bitcoin'
+    
+    // Fetch from CoinGecko API
+    const response = await fetch(
+      `https://api.coingecko.com/api/v3/simple/price?ids=${coinId}&vs_currencies=usd`,
+      {
+        headers: {
+          'Accept': 'application/json',
+        }
+      }
+    )
+
+    if (!response.ok) {
+      throw new Error(`CoinGecko API error: ${response.status}`)
+    }
+
+    const data = await response.json()
+    const price = data[coinId]?.usd
+
+    if (!price) {
+      throw new Error('Price not found')
+    }
+
+    return NextResponse.json({
+      symbol: symbol.toUpperCase(),
+      price: price,
+      source: 'coingecko'
+    })
+
+  } catch (error) {
+    console.error('Price fetch error:', error)
+    
+    // Return fallback prices for testing
+    const fallbackPrices = {
+      'BTCUSD': 100000,
+      'ETHUSD': 4000,
+      'SOLUSD': 200,
+      'SUIUSD': 4.5,
+      'ADAUSD': 1.2,
+      'DOGEUSD': 0.4,
+      'XRPUSD': 2.5,
+      'AVAXUSD': 45,
+      'LINKUSD': 20,
+      'MATICUSD': 1.1
+    }
+
+    return NextResponse.json({
+      symbol: symbol.toUpperCase(),
+      price: fallbackPrices[symbol.toUpperCase()] || 100,
+      source: 'fallback',
+      error: error.message
+    })
+  }
+}