SECURITY: Remove credential exposure from logs

- Replace full config logging with sanitized version
- Credentials now show as [REDACTED] in console logs
- Fixed in: enhanced-screenshot service, API routes, test files
- Prevents TradingView email/password from appearing in container logs

test-enhanced-screenshot.ts

@@ -15,7 +15,12 @@ async function testDualSessionScreenshots() {
       }
     }
     
-    console.log('📋 Test Configuration:', config)
+    console.log('📋 Test Configuration:', {
+      symbol: config.symbol,
+      timeframe: config.timeframe,
+      layouts: config.layouts,
+      credentials: '[REDACTED]'
+    })
     
     // Perform the dual-session screenshot capture
     console.log('\n🔄 Starting dual-session capture...')