fix: correct database column name in version comparison query

- Changed 'pricePosition' to 'pricePositionAtEntry' in extreme positions query
- Fixed database error: column "pricePosition" does not exist

Context:
- API was failing with Error 42703 (column not found)
- Database schema uses 'pricePositionAtEntry', not 'pricePosition'
- Version comparison section now loads correctly in analytics dashboard

app/api/analytics/version-comparison/route.ts

@@ -78,7 +78,7 @@ export async function GET() {
       WHERE "exitReason" IS NOT NULL 
         AND "exitReason" NOT LIKE '%CLEANUP%'
         AND "isTestTrade" = false
-        AND "pricePosition" < 15
+        AND "pricePositionAtEntry" < 15
       GROUP BY "indicatorVersion"
       ORDER BY version DESC
     `